阅读说明：本技术 吸尿垫 (Urine absorption pad ) 是由 森和隆 河村浩治 于 2020-10-23 设计创作，主要内容包括：本发明提供能够紧凑地折叠、与外装体内表面的贴合性也优异并且容易安装于外装体内表面的适当位置的吸尿垫,或者是容易匹配于外装体的内表面形状并且在进行安装时的上提时不易打卷的吸尿垫。本发明的吸尿垫在长度方向上具有第1区域～第4区域,位于第2区域与第3区域的分界的第2折线是用于将吸尿垫弯折为使第2区域的肌肤相对面和第3区域的肌肤相对面彼此相对的折线,并且位于吸尿垫的长度方向中央部。此外,本发明的吸尿垫具有包含沿宽度方向延伸的第1折线和第2折线在内的至少两条折线,背面片的非肌肤相对面侧的粘合部以在长度方向上跨上述的第1折线和第2折线的各折线的方式配置。(The invention provides a urine absorption pad which can be compactly folded, has excellent adhesion with the inner surface of an outer casing, and is easily installed at a proper position of the inner surface of the outer casing, or a urine absorption pad which is easily matched with the shape of the inner surface of the outer casing and is not easy to curl when being lifted up during installation. The urine absorption pad of the present invention has 1 st to 4 th regions in the longitudinal direction, and the 2 nd folding line located at the boundary between the 2 nd and 3 rd regions is a folding line for folding the urine absorption pad so that the skin-facing surface of the 2 nd region and the skin-facing surface of the 3 rd region face each other, and is located at the longitudinal center portion of the urine absorption pad. The urine absorption pad of the present invention has at least two folding lines including the 1 st folding line and the 2 nd folding line extending in the width direction, and the adhesive portion on the non-skin-facing surface side of the back sheet is disposed so as to straddle each of the 1 st folding line and the 2 nd folding line in the longitudinal direction.)

1. A urine absorption pad comprising a front sheet forming a skin-facing surface, a back sheet forming a non-skin-facing surface, an absorbent body disposed between the front sheet and the back sheet, and an adhesive part disposed on the surface of the back sheet on the non-skin-facing surface side, and having a longitudinal direction, a width direction, and a thickness direction,

when the urine absorption pad is viewed from above in a spread state,

having a 1 st fold line, a 2 nd fold line and a 3 rd fold line extending in the width direction,

and has:

a 1 st region divided by the 1 st fold line and one side edge in the longitudinal direction;

a 2 nd region divided by the 1 st fold line and the 2 nd fold line;

a 3 rd region divided by the 2 nd fold line and the 3 rd fold line; and

a 4 th region defined by the 3 rd folding line and the other end edge in the longitudinal direction,

the 2 nd folding line is a folding line for folding the urine absorption pad in the longitudinal direction so that the skin-facing surface of the 2 nd area and the skin-facing surface of the 3 rd area oppose each other with the 2 nd folding line as a boundary, and the 2 nd folding line is located at a longitudinal direction center portion of the urine absorption pad.

2. The urine absorption pad as set forth in claim 1,

the sum of the longitudinal length of the 2 nd region and the longitudinal length of the 3 rd region is larger than the sum of the longitudinal length of the 1 st region and the longitudinal length of the 4 th region.

3. The urine absorption pad as claimed in claim 1 or 2,

the sum of the longitudinal length of the 3 rd region and the longitudinal length of the 4 th region is greater than the longitudinal length of the 2 nd region.

4. The urine absorption pad as claimed in claim 1 or 2,

the adhesive section is not disposed at a position further toward the longitudinal direction outer side than the longitudinal direction end edge of the absorbent body when viewed in a plan view in an unfolded state.

5. The urine absorption pad as claimed in claim 1 or 2,

the adhesive portion extends continuously or intermittently in the longitudinal direction when viewed in a plane in an unfolded state, and extends so as to straddle at least one of the 1 st fold line, the 2 nd fold line, and the 3 rd fold line in the longitudinal direction.

6. The urine absorption pad as claimed in claim 5,

the adhesive portion extends in a range from the 1 st region to the 4 th region.

7. The urine absorption pad as claimed in claim 1 or 2,

the adhesive section is disposed in a region overlapping the absorbent body in the thickness direction in a planar view in a developed state, and is disposed on both sides of a width direction central axis extending in the longitudinal direction with the width direction central axis interposed therebetween.

8. The urine absorption pad as claimed in claim 1 or 2,

the absorbent body has a deformation guide portion that is located at a widthwise central portion in a planar view in a developed state and extends in the longitudinal direction.

9. The urine absorption pad as set forth in claim 8,

the deformation guide portion is located between the 1 st fold line and the 3 rd fold line in a developed state in a plan view, and extends in the longitudinal direction so as to straddle the 2 nd fold line.

10. The urine absorption pad as claimed in claim 1 or 2,

the absorbent body has a narrow width portion having a relatively short length in the width direction at the longitudinal direction central portion in a planar view in an expanded state.

11. The urine absorption pad as claimed in claim 1 or 2,

the urine absorption pad has a circumferential seal portion at both ends in the width direction in at least the 1 st region and the 4 th region.

12. A urine absorption pad comprising a front sheet forming a skin-facing surface, a back sheet forming a non-skin-facing surface, an absorbent body disposed between the front sheet and the back sheet, and an adhesive part disposed on the surface of the back sheet on the non-skin-facing surface side, and having a longitudinal direction, a width direction, and a thickness direction,

the urine absorption pad has at least two folding lines extending in the width direction when viewed in a plan view in an unfolded state,

the at least two fold lines include:

a 1 st fold line located closest to a longitudinal one-side end edge of the urine absorption pad; and

a 2 nd fold line located closest to the other end edge in the longitudinal direction of the urine absorption pad,

the adhesive portion is disposed so as to straddle at least each of the 1 st fold line and the 2 nd fold line in the longitudinal direction.

13. The urine absorbent pad as set forth in claim 12,

the urine absorption pad further has at least one folding line extending in the width direction between the 1 st folding line and the 2 nd folding line when viewed in a plane in an unfolded state,

the adhesive portion is disposed across the at least one fold line in the longitudinal direction.

14. The urine absorption pad as claimed in claim 12 or 13,

the urine absorption pad further includes a pair of leakage preventing wall portions including a pair of side sheets positioned at both ends in the width direction and disposed on a surface of the surface sheet on the skin-facing surface side so as to extend in the longitudinal direction, and an elastic member fixed to each of the pair of side sheets and extending in the longitudinal direction,

the adhesive portion extends in the longitudinal direction to a position outside a longitudinal direction fixed end of the elastic member.

15. The urine absorption pad as claimed in claim 12 or 13,

when the urine absorption pad is viewed from above in a spread state,

the length in the longitudinal direction from the 1 st fold line to the one end edge in the longitudinal direction of the absorbent body is longer than half the length in the longitudinal direction from the 1 st fold line to the one end edge in the longitudinal direction of the urine absorption pad,

the length in the longitudinal direction from the 2 nd fold line to the other end edge in the longitudinal direction of the absorbent body is longer than half the length in the longitudinal direction from the 2 nd fold line to the other end edge in the longitudinal direction of the urine absorption pad.

16. The urine absorption pad as claimed in claim 12 or 13,

the absorbent body has a deformation guide portion that is located at a widthwise central portion in a planar view in a developed state and extends in the longitudinal direction.

17. The urine absorbent pad as set forth in claim 16,

the deformation guide portion and the bonding portion do not overlap in the thickness direction.

18. The urine absorption pad as claimed in claim 12 or 13,

the absorbent body has a narrow width portion having a relatively short length in the width direction at the longitudinal direction central portion of the urine absorption pad when viewed in a developed state.

Technical Field

The present invention relates to a diaper pad attached to an inner surface of an outer body such as a diaper and a disposable diaper.

Background

A diaper pad is known as an absorbent article to be attached to an inner surface of an outer body such as a diaper or a diaper. In addition, various types of urine absorption pads have been proposed in recent years, and for example, patent document 1 discloses an absorbent pad to be attached to the inside of a diaper, in which a folding line for folding the absorbent pad in two is formed, the folding line being inclined obliquely from the width direction, and in a state where the absorbent pad is folded in two by the folding line, a 1 st edge line defining one edge in the longitudinal direction of the absorbent pad intersects a 2 nd edge line defining the other edge in the longitudinal direction of the absorbent pad.

Patent document 2 discloses an absorbent article to be attached to underwear for use, wherein a main body portion of the absorbent article has an absorbent core made of a liquid-absorbent material, the absorbent core has a protruding portion protruding toward the skin side in a thickness direction, the protruding portion is formed in a ring shape surrounding a central portion in a longitudinal direction of the absorbent core and has two protruding portions extending in a width direction as respective end portions in the longitudinal direction of the protruding portion, and a bending line for bending the absorbent article so that a surface of the absorbent article facing the skin side is on an inner peripheral side is set in at least one position in the longitudinal direction of the main body portion, in the case where one of the two projecting portions is a front projecting portion and the other projecting portion is a rear projecting portion, at least one of the bending lines is provided on the body portion at a position on the rear side in the longitudinal direction of the front side edge portion in the longitudinal direction of the rear projecting portion.

In general, a urine-absorbing pad is used by attaching the urine-absorbing pad to the inner surface of an outer body such as a diaper or a diaper, and then lifting the outer body so that the surface of the urine-absorbing pad is brought into close contact with the crotch of a wearer. Therefore, various techniques for improving the fit to the crotch portion of the wearer and for preventing urine discharged from the wearer from leaking to the outside have been studied in order to prevent the wearer from feeling unnatural and uncomfortable.

In addition to the above-mentioned techniques, various types of urine absorption pads have been proposed in recent years in consideration of the convenience of the wearer, for example, patent document 3 discloses an absorbent article folded so as to be able to unfold, wherein the absorbent article has a longitudinal central region, a longitudinal 1 st region and a longitudinal 2 nd region, the longitudinal central region extends between a 1 st virtual straight line in the width direction and a 2 nd virtual straight line in the width direction when viewed in plan in an unfolded state, the width direction 1 st imaginary straight line is located between a longitudinal direction central axis extending in the width direction and one end edge portion in the longitudinal direction and extends in the width direction, the width direction 2 nd imaginary straight line is located between the longitudinal direction central axis and the other longitudinal side end edge portion and extends in the width direction; a longitudinal direction 1 st region extending between the one side end edge portion and the width direction 1 st imaginary straight line; the longitudinal direction 2 nd region extends between the other side end edge part and the width direction 2 nd imaginary straight line, further, after the absorbent article is folded toward the surface sheet side by the 1 st imaginary straight line in the width direction, the longitudinal direction 1 st region and the longitudinal direction 2 nd region are at least partially overlapped and opposed to each other in the thickness direction by folding with the width direction 2 nd imaginary straight line, thereby forming a state of being folded so as to be expandable, and further including an engaging member on the non-skin-facing surface at a position overlapping with the longitudinal direction 2 nd region in the thickness direction in the longitudinal direction 1 st region, further, as an embodiment of the absorbent article, a urine absorption pad folded in three in the longitudinal direction by the width direction 1 st virtual line and the width direction 2 nd virtual line (two folding lines extending in the width direction) is disclosed.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 6383751

Patent document 2: japanese patent laid-open No. 2014-226459

Patent document 3: japanese patent No. 6541633

Disclosure of Invention

Problems to be solved by the invention

In the two-fold urine absorbing pad such as the absorbent pad of patent document 1, the fold line extending in the width direction is positioned at the center in the longitudinal direction, and therefore, the fold line can be used as a positioning mark when the pad is attached to the inner surface of an outer body such as a diaper or a diaper. In addition, such a double-folded urine absorption pad has a large folded appearance due to the double folding, and thus has a high psychological impact on wearing, and may be hesitant to wear depending on the situation.

On the other hand, the four-fold urine absorption pad such as the absorbent article of patent document 2 is compactly foldable, so that the appearance after folding is small, psychological impact on wearing can be suppressed to be low, and by making the number of folding lines extending in the width direction large, the urine absorption pad is easily deformed into a shape curved in the longitudinal direction (that is, substantially U-shaped), and the fit with the inner surface of the outer cover is also good.

However, since it is difficult to use the fold line as the positioning mark when the four-fold urine absorption pad is attached to the inner surface of the outer body, it is difficult to attach the four-fold urine absorption pad to an appropriate position on the inner surface of the outer body, and there is a possibility that urine leaks out during wearing.

Further, the three-folded urine absorption pad of patent document 3 has two folding lines extending in the width direction, and thus the urine absorption pad is easily deformed into a shape curved in the longitudinal direction (i.e., a substantially U-shape), and easily conforms to the inner surface shape of the outer cover.

However, in the urine absorbent pad of patent document 3, a gap is easily formed between the urine absorbent pad and the inner surface of the outer package due to the folding tendency of the folding line, and when the outer package is lifted up after being attached to the inner surface of the outer package such as a diaper or a diaper to bring the surface of the urine absorbent pad into close contact with the crotch of the wearer (hereinafter, simply referred to as "lifting at the time of attachment"), the above-mentioned folding line may serve as a base point to bend the urine absorbent pad and curl it from the end in the longitudinal direction. When the urine absorption pad is rolled up in this manner, a feeling of foreign matter may be given to the wearer, or urine discharged from the wearer may leak to the outside.

Accordingly, a 1 st object of the present invention is to provide a urine absorption pad which can be folded compactly, is excellent in adhesion to the inner surface of an outer casing, and is easily attached to an appropriate position on the inner surface of the outer casing.

It is a further object of the present invention to provide a urine absorption pad which is easily adapted to the shape of the inner surface of the outer body and is less likely to be curled when lifted up during mounting.

Means for solving the problems

One mode (mode 1) of the present invention is a urine absorption pad comprising a front sheet forming a skin-facing surface, a back sheet forming a non-skin-facing surface, an absorbent body disposed between the front sheet and the back sheet, and an adhesive portion disposed on a surface of the back sheet on the non-skin-facing surface side, the urine absorption pad having a longitudinal direction, a width direction, and a thickness direction,

when the urine absorption pad is viewed from above in a spread state,

having a 1 st fold line, a 2 nd fold line and a 3 rd fold line extending in the width direction,

and has:

a 1 st region divided by the 1 st fold line and one side edge in the longitudinal direction;

a 2 nd region divided by the 1 st fold line and the 2 nd fold line;

a 3 rd region divided by the 2 nd fold line and the 3 rd fold line; and

a 4 th region defined by the 3 rd folding line and the other end edge in the longitudinal direction,

the 2 nd folding line is a folding line for folding the urine absorption pad in the longitudinal direction so that the skin-facing surface of the 2 nd area and the skin-facing surface of the 3 rd area oppose each other with the 2 nd folding line as a boundary, and the 2 nd folding line is located at a longitudinal direction center portion of the urine absorption pad.

In the urine absorption pad according to claim 1, the 1 st fold line, the 2 nd fold line, and the 3 rd fold line extending in the width direction are provided, so that the urine absorption pad can be folded compactly, and can be easily deformed into a shape curved in the longitudinal direction (that is, substantially U-shaped), and has excellent adhesion to the inner surface of the outer package.

Further, when the urine absorbent pad according to claim 1 is attached to the inner surface of the outer cover, the urine absorbent pad can be folded in the longitudinal direction so that the surface sheet is positioned inside by the 2 nd fold line positioned at the center in the longitudinal direction, and the 2 nd fold line can be adhesively fixed to the inner surface of the outer cover as a positioning mark, so that the urine absorbent pad can be easily attached to an appropriate position on the inner surface of the outer cover.

In addition, according to the urine absorption pad of claim 1, in another aspect (claim 2) of the present invention, a sum of a longitudinal length of the 2 nd region and a longitudinal length of the 3 rd region is larger than a sum of a longitudinal length of the 1 st region and a longitudinal length of the 4 th region.

In the urine absorbent pad according to claim 2, since the 2 nd region and the 3 rd region located on both sides of the 2 nd fold line are relatively large, the 2 nd fold line located in the longitudinal central portion is easily visually recognized when the urine absorbent pad is attached to the inner surface of the outer cover, and particularly, even when the 1 st region and the 4 th region at the longitudinal end portions are inclined toward the skin-facing surface side, the 2 nd fold line located in the longitudinal central portion is easily visually recognized, and the 2 nd fold line can be used as the positioning mark more reliably.

In a further aspect (aspect 3) of the present invention, the urine absorbent pad according to aspect 1 or 2 is characterized in that the sum of the longitudinal length of the 3 rd region and the longitudinal length of the 4 th region is larger than the longitudinal length of the 2 nd region.

In the urine absorbent pad according to claim 3, since the sum of the longitudinal length of the 3 rd region and the longitudinal length of the 4 th region is greater than the longitudinal length of the 2 nd region, when the urine absorbent pad is unfolded from the state folded in four before being attached to the inner surface of the outer casing and folded in two by the 2 nd fold line and then held inside the outer casing, there is no fold line in the exposed portion of the surface sheet from the state folded in two, and therefore, the fold line of the fold line is not visually recognized on the surface on the skin-facing surface side of the exposed portion of the surface sheet from the urine absorbent pad in the state folded in two, and it is possible to prevent uneasy feeling such as leakage of urine or reduction in wearing feeling from the fold line of the surface sheet to the wearer.

According to any one of the above-described aspects 1 to 3, in a further aspect (aspect 4) of the present invention, the adhesive portion is not disposed at a position further toward the outside in the longitudinal direction than the longitudinal direction end edge of the absorbent body in a plan view in a developed state.

In the urine absorbent pad according to claim 4, since the adhesive portion is not disposed in the portion having low rigidity located on the outer side in the longitudinal direction from the longitudinal direction end edge of the absorbent body, when the urine absorbent pad is attached to the inner surface of the outer cover, even if the 1 st region and the 4 th region are inclined toward the skin-facing surface side, the longitudinal direction end portion of the urine absorbent pad is not easily adhered and fixed to other portions by accident, and the urine absorbent pad is easily attached to an appropriate position on the inner surface of the outer cover.

In a further aspect (aspect 5) of the present invention, according to any one of the above aspects 1 to 4, the adhesive portion extends continuously or intermittently in the longitudinal direction when viewed in a plan view in an unfolded state, and extends so as to straddle at least one of the 1 st fold line, the 2 nd fold line, and the 3 rd fold line in the longitudinal direction.

In the urine absorption pad according to claim 5, since the portion having the folding line can be firmly bonded and fixed to the inner surface of the outer cover by the bonding portion extending across at least one folding line in the longitudinal direction, the portion is less likely to be peeled off from the inner surface of the outer cover or to be accidentally bent due to the tendency of the portion having the folding line to fold or the like.

Thus, in the urine absorbent pad according to claim 5, the urine absorbent pad is less likely to be curled or peeled off when the outer cover is lifted up after being attached to the inner surface of the outer cover and brought into close contact with the crotch of the wearer.

In a further aspect (aspect 6) of the present invention, the urine absorbent pad according to aspect 5 is characterized in that the adhesive portion extends from the 1 st region to the 4 th region.

In the urine absorption pad of claim 6, since the adhesive portion extends in a range from the 1 st region to the 4 th region, that is, in a relatively large region in the longitudinal direction from a position outside the 1 st fold line in the longitudinal direction to a position outside the 3 rd fold line in the longitudinal direction, a portion having all of the fold lines from the 1 st fold line to the 3 rd fold line can be firmly adhered and fixed to the inner surface of the outer cover, and therefore, the operational effect of the urine absorption pad of claim 5 described above can be more reliably exhibited.

According to any one of the urine absorbent pad set forth in claims 1 to 6, in a further aspect (claim 7) of the present invention, the adhesive portion is disposed in a region overlapping the absorbent body in the thickness direction in a planar view in a developed state, and is disposed on both sides of a width direction central axis extending in the longitudinal direction with the width direction central axis interposed therebetween.

In the urine absorption pad according to claim 7, the portion overlapping the absorbent body in the thickness direction can be firmly bonded and fixed along the shape of the inner surface of the outer cover by the bonding portions disposed in the region overlapping the absorbent body in the thickness direction and disposed on both sides of the width direction center axis extending in the longitudinal direction with the width direction center axis interposed therebetween, and even if the legs and the buttocks of the wearer alternately move in the left-right direction during wearing of the outer cover, the portion is easily deformed along with the movement of the outer cover, so that the urine absorption pad is less likely to be curled or peeled off during wearing.

In a further aspect (aspect 8) of the present invention, according to any one of the above aspects 1 to 7, the absorbent body has a deformation guide portion which is located at a widthwise central portion in a developed state and extends in the longitudinal direction in a plan view.

In the urine absorbent pad according to claim 8, when a force (leg-receiving force) is applied in the width direction of the urine absorbent pad from both legs of the wearer during wearing, the urine absorbent pad is bent in the width direction so that the portion where the deformation guide portion is formed (i.e., the width-direction central portion) protrudes toward the skin-facing surface side with the deformation guide portion extending in the longitudinal direction as a starting point, and the portion is likely to come into close contact with the crotch portion of the wearer, and therefore, more excellent fit can be exhibited. Further, by extending the deformation guide portion in the longitudinal direction, urine discharged from the wearer can be diffused in the longitudinal direction along the deformation guide portion, and there is an advantage that more excellent absorption performance can be exhibited.

In the urine absorbing pad according to claim 8, in a further aspect (claim 9) of the present invention, the deformation guide portion is located between the 1 st fold line and the 3 rd fold line in a plan view in a developed state, and extends in the longitudinal direction so as to straddle the 2 nd fold line.

In the urine absorbent pad according to claim 9, the deformation guide portion located between the 1 st fold line and the 3 rd fold line and extending in the longitudinal direction so as to straddle the 2 nd fold line can be brought into close contact with the crotch portion of the wearer more accurately, that is, the central portion in the longitudinal direction and the width direction, which is the portion where the deformation guide portion is formed. Further, in the urine absorption pad according to claim 9, the deformation guide portion extends in the longitudinal direction so as not to straddle each of the 1 st fold line and the 3 rd fold line, and therefore, there is an advantage in that: even if urine discharged from the wearer spreads in the longitudinal direction along the deformation guide portion, the urine is less likely to leak from the widthwise outer side of the urine absorption pad along each fold of the 1 st fold line and the 3 rd fold line.

In a further aspect (aspect 10) of the present invention, according to any one of the above aspects 1 to 9, the absorbent body has a narrow portion having a relatively short length in a width direction at the longitudinal direction center portion in a developed state when viewed in plan.

In the urine absorbent pad according to claim 10, since the absorbent member has such a narrow width portion, the longitudinal center portion of the urine absorbent pad can be brought into close contact with the crotch of the wearer more accurately when worn, and more excellent fit can be exhibited. Further, the absorbent body having relatively high rigidity in the urine absorption pad is less likely to come into contact with the inner portions of the legs of the wearer, and therefore, there is an advantage that the wearer is less likely to feel a foreign body sensation.

In a further aspect (aspect 11) of the present invention, the urine absorbent pad according to any one of aspects 1 to 10 is characterized in that the urine absorbent pad has a peripheral seal portion at both widthwise ends at least in the 1 st region and the 4 th region.

In the urine absorbent pad according to claim 11, since the rigidity of the widthwise opposite end portions where no absorbent body is present (i.e., the rigidity is relatively low) can be increased by the circumferential seal portion, the urine absorbent pad can be made less likely to be curled or peeled off when the outer cover is lifted up to be brought into close contact with the crotch portion of the wearer after the urine absorbent pad is attached to the inner surface of the outer cover.

Still another aspect of the present invention (claim 12) is a urine absorption pad which comprises a front sheet forming a skin-facing surface, a back sheet forming a non-skin-facing surface, an absorbent body disposed between the front sheet and the back sheet, and an adhesive portion disposed on a surface of the back sheet on the non-skin-facing surface side, and which has a longitudinal direction, a width direction, and a thickness direction,

the urine absorption pad has at least two folding lines extending in the width direction when viewed in a plan view in an unfolded state,

the at least two fold lines include:

a 1 st fold line located closest to a longitudinal one-side end edge of the urine absorption pad; and

a 2 nd fold line located closest to the other end edge in the longitudinal direction of the urine absorption pad,

the adhesive portion is disposed so as to straddle at least each of the 1 st fold line and the 2 nd fold line in the longitudinal direction.

The urine absorption pad according to claim 12 has at least two folding lines extending in the width direction, so that the urine absorption pad is easily deformed into a shape curved in the longitudinal direction (i.e., a substantially U-shape) and easily conforms to the shape of the inner surface of the outer cover.

Further, since the adhesive portion is disposed so as to straddle each of the two folding lines near the longitudinal end portions in the longitudinal direction, that is, the 1 st folding line located at the position closest to the one longitudinal end edge and the 2 nd folding line located at the position closest to the other longitudinal end edge, the portion having the folding lines can be firmly adhered and fixed to the inner surface of the outer cover, and therefore, when the diaper is lifted up at the time of mounting, the diaper can be bent with the folding lines as the base points, and the longitudinal end portions are less likely to be curled.

Therefore, the urine absorption pad according to claim 12 is easily adapted to the inner surface shape of the outer cover, and is less likely to be curled when lifted up during attachment.

Further, according to the urine absorbing pad of claim 12, in another aspect (claim 13) of the present invention, the urine absorbing pad further has at least one folding line extending in the width direction between the 1 st folding line and the 2 nd folding line when viewed in a plane in an unfolded state,

the adhesive portion is disposed across the at least one fold line in the longitudinal direction.

In the urine absorption pad according to claim 13, since at least one fold line is provided between the 1 st fold line and the 2 nd fold line, the urine absorption pad is more easily deformed into a shape curved in the longitudinal direction, and thus can be more accurately matched to the shape of the inner surface of the exterior body.

Further, since the adhesive portion extends so as to straddle the fold line between the 1 st fold line and the 2 nd fold line in the longitudinal direction, and the portion having the fold line can be firmly adhered and fixed to the inner surface of the exterior body, the portion having the fold line is less likely to be peeled off from the inner surface of the exterior body or to be accidentally bent due to the tendency of the fold line to fold or the like.

Thus, the urine absorption pad according to claim 13 can be more accurately attached to the crotch of the wearer, and is excellent in comfort and leakage prevention during wearing.

A urine absorption pad according to claim 12 or 13, in still another aspect (claim 14) of the present invention, wherein the urine absorption pad further includes a pair of leakage preventing wall portions including a pair of side sheets located at both ends in the width direction and disposed on a surface of the top sheet on the skin-facing surface side so as to extend in the longitudinal direction, and an elastic member fixed to each of the pair of side sheets and extending in the longitudinal direction,

the adhesive portion extends in the longitudinal direction to a position outside a longitudinal direction fixed end of the elastic member.

In general, when the urine absorption pad has the pair of leakage preventing wall portions that rise up by the contraction force of the elastic member, although good leakage prevention performance can be exhibited, the urine absorption pad may contract inward in the longitudinal direction by the contraction force of the elastic member after being attached to the inner surface of the outer casing, and the end portion in the longitudinal direction thereof is likely to be curled up, but in the urine absorption pad according to claim 14, since the adhesive portion extends to the outer side in the longitudinal direction than the longitudinally fixed end of the elastic member, the portion to which the contraction force of the elastic member acts can be firmly adhered and fixed to the inner surface of the outer casing, and the end portion in the longitudinal direction of the urine absorption pad can be made less likely to be curled up.

In a further aspect (aspect 15) of the present invention, according to any one of the above aspects 12 to 14, the urine absorption pad is characterized in that, when viewed in a plane view in an unfolded state,

the length in the longitudinal direction from the 1 st fold line to the one end edge in the longitudinal direction of the absorbent body is longer than half the length in the longitudinal direction from the 1 st fold line to the one end edge in the longitudinal direction of the urine absorption pad,

the length in the longitudinal direction from the 2 nd fold line to the other end edge in the longitudinal direction of the absorbent body is longer than half the length in the longitudinal direction from the 2 nd fold line to the other end edge in the longitudinal direction of the urine absorption pad.

In the urine absorbent pad according to claim 15, the length in the longitudinal direction from each of the 1 st fold line and the 2 nd fold line to each end edge in the longitudinal direction of the absorbent body is longer than half the length in the longitudinal direction from each of the 1 st fold line and the 2 nd fold line to each end edge in the longitudinal direction of the urine absorbent pad, so that a region in which the absorbent body is disposed (that is, a region having relatively high rigidity) can be secured to be large in the longitudinal direction in a region from each of the 1 st fold line and the 2 nd fold line to each end edge in the longitudinal direction of the urine absorbent pad, and therefore, the ends in the longitudinal direction of the urine absorbent pad can be made less likely to be curled, and the urine absorbent pad can be easily recovered even if temporarily curled.

In a further aspect (claim 16) of the present invention, according to any one of the above-described aspects 12 to 15, the absorbent body has a deformation guide portion which is located at a widthwise central portion in a developed state and extends in the longitudinal direction in a plan view.

In the urine absorbent pad according to claim 16, when the pad is lifted up during attachment, the urine absorbent pad is bent in the width direction so that the portion where the deformation guide portion is formed (i.e., the width direction central portion) protrudes toward the skin-facing surface side with the deformation guide portion extending in the longitudinal direction as a starting point, and is easily deformed so that the cross-sectional shape in the width direction becomes substantially W-shaped, and therefore the width direction central portion of the urine absorbent pad is easily brought into close contact with the crotch portion of the wearer, and more excellent fit can be exhibited.

Further, by extending the deformation guide portion in the longitudinal direction, urine discharged from the wearer can be diffused in the longitudinal direction along the deformation guide portion, and there is an advantage that more excellent absorption performance can be exhibited.

In the urine absorbing pad according to claim 16 of the present invention (claim 17), the deformation guide portion and the adhesive portion do not overlap with each other in the thickness direction.

In the urine absorption pad according to claim 17, since the deformation guide portion and the adhesive portion do not overlap each other in the thickness direction, the deformation by the deformation guide portion is more easily obtained when lifting up at the time of mounting. Thus, the urine absorption pad according to claim 17 can more reliably exhibit the operational effect of the urine absorption pad according to claim 16.

In a further aspect (aspect 18) of the present invention, according to any one of the above aspects 12 to 17, the absorbent body has a narrow width portion having a relatively short length in a width direction at a longitudinal direction central portion of the urine absorbent pad in a developed state when viewed in plan.

In the urine absorbent pad according to claim 18, the absorbent member has the narrow portion, so that the longitudinal center portion of the urine absorbent pad can be more accurately brought into close contact with the crotch of the wearer when worn, and more excellent fit can be exhibited. Further, the absorbent body having relatively high rigidity in the urine absorption pad is less likely to come into contact with the inner portions of the legs of the wearer, and therefore, there is an advantage that the wearer is less likely to feel a foreign body sensation.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a urine absorption pad which can be folded compactly, has excellent adhesion to the inner surface of an outer casing, and can be easily attached to an appropriate position on the inner surface of the outer casing.

Further, according to the present invention, it is possible to provide a urine absorption pad which is easily adapted to the shape of the inner surface of the outer body and is less likely to be curled when lifted up at the time of mounting.

Drawings

Fig. 1 is a plan view of a urine absorbent pad 1 according to an embodiment of the present invention, as viewed in a thickness direction from a topsheet 2 side in a state where the urine absorbent pad 1 is unfolded.

Fig. 2 is a plan view of the urine absorbent pad 1 as viewed from the back sheet 3 side in the thickness direction in a state where the urine absorbent pad 1 is unfolded.

FIG. 3(a), FIG. 3(b), FIG. 3(c), and FIG. 3(d) are schematic views showing the use of the 1 st folding line L₁3 rd broken line L₃An explanatory view of the case of folding the urine absorption pad 1.

Fig. 4(a) and 4(b) are schematic views showing how the urine absorption pad 1 is attached to the inner surface of the outer package 10. Fig. 4(a) is a view seen from the side surface side, and fig. 4(b) is a view seen from the direction of arrow V (i.e., the upper side) of fig. 4 (a).

FIG. 5 shows the state where the urine absorption pad 1 is folded into four by itself and unfolded by the 2 nd folding line L₂A perspective view of a state of being folded into two.

Fig. 6 is a perspective view schematically showing a state in which the urine absorbent pad 1 is deformed so that the widthwise central portion protrudes toward the skin-facing surface side with the deformation guide portion 43 extending in the longitudinal direction L as a base point.

Fig. 7 is a plan view of the urine absorbent pad 1 ' according to another embodiment of the present invention, as viewed from the surface sheet 2 ' side in the thickness direction, in a state where the urine absorbent pad 1 ' is unfolded.

Fig. 8 is a plan view of the urine absorbent pad 1 ' as viewed from the back sheet 3 ' side in the thickness direction in a state where the urine absorbent pad 1 ' is unfolded.

FIG. 9(a), FIG. 9(b), FIG. 9(c), FIG. 9(d) are schematic viewsIs represented by a 1 st fold line L'₁-3 rd broken line L'₃An explanatory view of the case of folding the urine absorption pad 1'.

Fig. 10(a) and 10(b) are schematic views showing how the urine absorption pad 1 'is attached to the inner surface of the outer package 10'. Fig. 10(a) is a view seen from the side surface side, and fig. 10(b) is a view seen from the direction of arrow V' of fig. 10(a) (i.e., from the upper side).

Fig. 11 is a plan view of the urine absorbent pad 1 ' as viewed from the back sheet 3 ' side in the thickness direction in a state where the urine absorbent pad 1 ' is unfolded, and shows a positional relationship between the elastic member 6 ' and the adhesive portion 7 '.

Fig. 12 is a perspective view schematically showing a state in which the urine absorbent pad 1 'is deformed so that the widthwise central portion thereof protrudes toward the skin-facing surface side with the deformation guide portion 43' extending in the longitudinal direction L as a base point.

Description of the reference numerals

1. A urine absorption pad; 2. a surface sheet; 3. a back sheet; 4. an absorbent body; 5. a side panel; 6. an elastic member; 7. an adhesive portion; a. the₁1 st region; a. the₂Region 2; a. the₃Region 3; a. the₄A 4 th region; e₁One side end edge in the length direction; e₂The other side edge in the length direction; l is₁A 1 st fold line; l is₂A 2 nd fold line; l is₃A 3 rd fold line; 1', a urine absorption pad; 2', surface sheet; 3', a back sheet; 4', an absorbent body; 5', side panels; 6', an elastic member; 7', an adhesive part; a'₁1 st region; a'₂Region 2; a'₃Region 3; a'₄A 4 th region; e'₁One side end edge in the length direction; e'₂The other side edge in the length direction; l'₁A 1 st fold line; l'₂A 2 nd fold line; l'₃And a 3 rd fold line.

Detailed Description

(definitions of each)

Hereinafter, preferred embodiments of the urine absorption pad of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, unless otherwise specified, a case where "an object (for example, a urine absorption pad, an absorbent body, or the like) placed on a horizontal plane in a spread state as viewed from above in a vertical direction (a front sheet side or a back sheet side in the case where the object is a urine absorption pad) in a thickness direction of the object" is simply referred to as "a plan view".

Unless otherwise specified, various directions and the like used in the present specification are as follows.

In the present specification, "longitudinal direction" means a direction in which the length of a long object (for example, a diaper, an absorbent body, or the like in an unfolded state) in a plan view is long, "width direction" means a direction in which the length of a long object in a plan view is short, "thickness direction" means a direction perpendicular to an object placed on a horizontal plane in an unfolded state, "and the longitudinal direction, the width direction, and the thickness direction are in a relationship orthogonal to each other.

In the present specification, the "axis line extending in the longitudinal direction and located at the center in the width direction of the vertically long object" is referred to as a "width direction center axis line C_L"an axis line extending in the width direction and located at the center in the longitudinal direction of a vertically long object" is referred to as a "longitudinal central axis line C_W". In association with this, "the longitudinal center axis C is located at a distance from the longitudinal center axis C in the longitudinal direction of the vertically long object_WThe relatively close side is called "longitudinal inner side", and "is distant from the longitudinal central axis C in the longitudinal direction of the longitudinal object_WThe relatively distant side is referred to as "the longitudinal direction outer side". Similarly, "the center axis C is located at a distance from the width direction center axis C in the width direction of the vertically long object_LThe relatively close side is called "inner side in width direction", and will be "away from the center axis C in width direction of the longitudinal object_LThe relatively distant side is referred to as "widthwise outer side".

In the present specification, unless otherwise specified, the side "relatively closer to the skin surface of the wearer when the diaper is worn" in the thickness direction of the diaper is referred to as the "skin-facing side", and the side "relatively farther from the skin surface of the wearer when the diaper is worn" is referred to as the "non-skin-facing side". In connection with this, in the urine absorption pad, both surfaces of the skin-facing surface side and the non-skin-facing surface side which face each other in the thickness direction are referred to as a skin-facing surface and a non-skin-facing surface, respectively, and in the constituent members such as the topsheet, the backsheet, and the absorbent body, both surfaces of the skin-facing surface side and the non-skin-facing surface side which face each other in the thickness direction are referred to as a skin-facing surface side surface and a non-skin-facing surface side surface, respectively.

[ urine absorption pad ]

As shown in fig. 1 and 2, the urine absorption pad 1 according to the embodiment of the present invention has an outer shape of a vertically long substantially rectangular shape having a longitudinal direction L and a width direction W in a plan view. The outer shape of the urine absorption pad 1 is not limited to this form, and any shape (for example, an oval shape, an hourglass shape, a gourd-shaped shape, etc.) can be adopted depending on various uses, use forms, etc., as long as it is a vertically long shape.

The above-described urine absorption pad 1 includes, as basic components, a liquid-permeable front sheet 2 forming a skin-facing surface of the urine absorption pad 1, a back sheet 3 forming a non-skin-facing surface of the urine absorption pad 1, an absorbent member 4 disposed between the front sheet 2 and the back sheet 3, and a pressure-sensitive adhesive portion 7 disposed on a surface of the back sheet 3 on the non-skin-facing surface side in the thickness direction.

As shown in fig. 1, the urine absorption pad 1 further includes: a pair of side sheets 5, 5 disposed at both ends in the width direction W of the urine absorbent pad 1 at positions closer to the skin-facing surface side than the topsheet 2, and having end edges on the inner side in the width direction of the pair of side sheets 5, 5 rising up and functioning as leakage preventing portions when the urine absorbent pad 1 is attached to the inner surface of the outer body (i.e., when the urine absorbent pad 1 is bent in the longitudinal direction L); and a plurality of elastic members 6 disposed along the longitudinal direction L in each of the pair of side sheets 5, and configured to contract the pair of side sheets 5, 5 in the longitudinal direction L to promote the raising of the end edge portions on the inner side in the width direction.

Further, as shown in fig. 1 and 2, the urine absorption pad 1 is viewed from above in a developed stateAt one side edge E in the longitudinal direction L of the urine absorption pad 1₁And the other end edge E in the longitudinal direction L₂Three folding lines extending in the width direction W for folding the urine absorption pad 1 in the length direction L, i.e. a 1 st folding line L₁2 nd fold line L₂And a 3 rd fold line L₃And a side edge E extending in the longitudinal direction L₁And a 1 st fold line L₁Divided into 1 st region A₁From the 1 st broken line L₁And a 2 nd fold line L₂Divided 2 nd area A₂From the 2 nd fold line L₂And a 3 rd folding line L₃Divided into 3 rd region A₃And the 3 rd folding line L₃And the other end edge E in the longitudinal direction L₂Divided 4 th area A₄。

Such a urine absorption pad 1 having three folding lines is formed with a 3 rd folding line L as shown in FIG. 3(a) from a state of being unfolded₃Is bent in the longitudinal direction L to form a 3 rd region A₃Skin-facing surface and the 4 th area A₄Is opposed to each other, and then is taken as a 2 nd folding line L as shown in FIG. 3(b) from this state₂Is bent in the longitudinal direction L to form a 4 th region A₄Non-skin-facing surface and the 2 nd area A of₂Are opposed to each other (in other words, the 2 nd area A is formed₂Skin-facing surface and the 3 rd region A₃Are opposed to each other), and further, as shown in fig. 3(c), a 1 st folding line L is formed from this state₁Bending the first region A in the longitudinal direction L₁Skin-facing surface and the 3 rd region A₃The non-skin-facing surfaces of (a) are opposed to each other, so that they can be folded into a compact form as shown in fig. 3 (d).

Further, the urine absorbent pad 1 has a 1 st fold line L extending in the width direction W₁2 nd fold line L₂And a 3 rd fold line L₃Therefore, when attached to the inner surface of the outer package 10 such as a disposable diaper as shown in fig. 4 a, the outer package is easily deformed into a shape curved in the longitudinal direction L (i.e., a substantially U-shape), and has excellent adhesion to the inner surface of the outer package 10.

In addition, in the urine absorption pad 1, the 2 nd folding line L₂Is used to fold line 2L as described above₂The urine absorption pad 1 is bent in the longitudinal direction L to define the 2 nd region A₂Skin-facing surface and the 3 rd region A₃The 2 nd folding line L₂As shown in fig. 1 and 2, is located at the longitudinal center portion L of the urine absorption pad 1_C。

Thus, as shown in fig. 4(a) and 4(b), when the urine absorption pad 1 is attached to the inner surface of the outer package 10, the portion located at the longitudinal center L can be utilized_C2 nd fold line L₂The diaper 1 is folded in the longitudinal direction L so that the front sheet 2 is positioned inside (see fig. 4(a)), and the 2 nd fold line L can be formed₂Since the urine absorption pad 1 is adhesively fixed to the inner surface of the outer package 10 as a positioning mark (see fig. 4(b)), the urine absorption pad 1 can be attached to an appropriate position on the inner surface of the outer package 10.

Here, in the present specification, the "longitudinal direction central portion L_C"means a longitudinal central axis C extending in the width direction W_WAs a center and is apart from the longitudinal central axis C in the longitudinal direction L_WIs a portion within 15% of the entire length of the urine absorption pad 1. The same applies to the widthwise central portion.

Further, in the above-mentioned urine absorption pad 1, as shown in FIGS. 1 and 2, the 2 nd region A₂Length d in the longitudinal direction of₂And 3 rd region A₃Length d in the longitudinal direction of₃Of (d)₂+d₃) Than the 1 st region A₁Length d in the longitudinal direction of₁And the 4 th region A₄Length d in the longitudinal direction of₄Of (d)₁+d₄) Is large.

Thus, in the urine absorption pad 1, the 2 nd folding line L₂The 2 nd area A is located at both sides of the first area A₂And 3 rd region A₃Since it is relatively wide, when the urine absorption pad 1 is attached to the inner surface of the outer package 10 as shown in fig. 4(a) and 4(b), it is easy to visually recognize that the central portion L is positioned in the longitudinal direction_C2 nd fold line L₂In particular, even in the 1 st region A at the end in the longitudinal direction₁Region 4, A₄Incline to the skin-facing surfaceEven in the case of falling, the central portion L in the longitudinal direction is easily visually recognized_C2 nd fold line L₂The 2 nd folding line L can be more reliably formed₂Used as a positioning mark.

Further, in the above-mentioned urine absorption pad 1, as shown in FIGS. 1 and 2, the 3 rd region A₃Length d in the longitudinal direction of₃And the 4 th region A₄Length d in the longitudinal direction of₄Of (d)₃+d₄) Than 2 region A₂Length d in the longitudinal direction of₂Is large.

Thus, before the urine absorbent pad 1 is attached to the inner surface of the outer package 10, the urine absorbent pad 1 is unfolded in a state of being folded in four by itself and is folded by the 2 nd folding line L as shown in fig. 5₂When the sheet is folded in two and then held inside the outer package 10, there is no folding line at the exposed portion of the surface sheet 2 from the urine absorption pad 1 folded in two (see fig. 5), and therefore, the fold of the folding line is not visually recognized on the surface of the skin-facing surface side of the exposed portion of the surface sheet 2 from the urine absorption pad 1 folded in two, and uneasy feeling such as leakage of urine or reduction of wearing feeling due to the fold of the surface sheet 2 can be hardly given to the wearer.

In the present invention, the folding form of the urine absorption pad, the position of each fold line other than the 2 nd fold line, the number of fold lines, and the like are not limited to the above-described embodiments as long as the effects of the present invention are not hindered.

For example, the urine absorption pad of the present invention may be folded compactly by folding the urine absorption pad in the longitudinal direction L so that the skin-facing surface of the 3 rd region and the skin-facing surface of the 4 th region face each other at the 3 rd fold line as a boundary from the unfolded state, folding the urine absorption pad in the longitudinal direction L so that the skin-facing surface of the 1 st region and the skin-facing surface of the 2 nd region face each other at the 1 st fold line as a boundary, and folding the urine absorption pad in the longitudinal direction L so that the non-skin-facing surface of the 1 st region and the non-skin-facing surface of the 4 th region face each other at the 2 nd fold line as a boundary (in other words, so that the skin-facing surface of the 2 nd region and the skin-facing surface of the 3 rd region face each other.

The fold line may have a fold line other than the three fold lines (i.e., the 1 st fold line, the 2 nd fold line, and the 3 rd fold line) (i.e., four or more fold lines in total) as long as the effect of the present invention is not hindered.

Hereinafter, the various components of the urine absorption pad of the present invention will be described in more detail with reference to the urine absorption pad 1 of the above-described embodiment.

[ adhesive part ]

In the urine absorbing pad 1, as shown in fig. 2, a bonding portion 7 for bonding and fixing the urine absorbing pad 1 to the inner surface of an exterior body 10 such as a disposable diaper is arranged in a form of six strips extending continuously in the longitudinal direction L and arranged at predetermined intervals in the width direction W on the surface of the back sheet 3 on the non-skin-facing surface side.

Since a release sheet (not shown) for protecting the adhesive portion 7 is usually bonded to the surface of the adhesive portion 7, when the urine absorbent pad 1 is attached to the inner surface of the outer package 10, the release sheet is peeled off, and then the adhesive portion 7 is pressed against the inner surface of the outer package 10, whereby the urine absorbent pad 1 can be adhesively fixed to the inner surface of the outer package 10.

In the above-described urine absorption pad 1, the adhesive portion 7 is not disposed at a position further outward in the longitudinal direction than the longitudinal direction end edges (specifically, the one side end edge 41 and the other side end edge 42 in the longitudinal direction L) of the absorbent body 4 in a plan view in an unfolded state as shown in fig. 2.

Thus, the urine absorbent pad 1 does not have the adhesive portion 7 at the portion having low rigidity located outside the longitudinal direction end edge of the absorbent body 4 in the longitudinal direction, and therefore, when the urine absorbent pad 1 is attached to the inner surface of the outer cover 10, the region 1A is not included even when the region 1A is included₁Region 4, A₄The longitudinal end of the urine absorbent pad 1 is not easily accidentally stuck to the other portion by being inclined toward the skin-facing surface side, and the urine absorbent pad 1 is easily attached to an appropriate position on the inner surface of the exterior body 10.

Further, in the above-described urine absorption pad 1, as shown in fig. 2, the adhesive portion 7 extends continuously in the longitudinal direction L when viewed in a plane in an unfolded state, and extends across the 1 st folding line L in the longitudinal direction L₁2 nd fold line L₂And a 3 rd fold line L₃These three fold linesIs extended.

In the urine absorption pad of the present invention, the arrangement of the adhesive portion is not limited to this form, but it is preferable that the adhesive portion extends continuously or intermittently in the longitudinal direction when viewed in a plan view in an unfolded state, and extends so as to straddle at least one of the 1 st fold line, the 2 nd fold line, and the 3 rd fold line in the longitudinal direction.

In this way, when the adhesive portion extends across at least one fold line in the longitudinal direction, the portion having the fold line can be firmly adhered and fixed to the inner surface of the exterior body, and therefore, the portion having the fold line is less likely to be peeled off from the inner surface of the exterior body or to be accidentally bent due to the tendency of the portion to fold or the like. Thus, when the outer package is lifted up after the urine absorbent pad is attached to the inner surface of the outer package and is brought into close contact with the crotch of the wearer, the urine absorbent pad is less likely to be curled or peeled.

Further, in the above-mentioned urine absorbent pad 1, as shown in FIG. 2, the adhesive part 7 is in the 1 st region A₁Up to the 4 th region A₄Extend within the range of (a). Thus, in the urine absorbent pad 1, the adhesive part 7 is in the 1 st region A₁To the 4 th area A₄I.e. from the 1 st fold line L₁To a position further to the outer side in the longitudinal direction than the 3 rd folding line L₃Since the region extending in the longitudinal direction L at the position on the outer side in the longitudinal direction is wide, the region can have the 1 st folding line L₁To the 3 rd broken line L₃The portions of all the folding lines are firmly bonded and fixed to the inner surface of the exterior body 10, and the above-described operational effect, i.e., the operational effect that the portions having the folding lines are not easily peeled off from the inner surface of the exterior body 10 or are not easily bent unexpectedly due to the tendency of the portions to fold, etc., can be more reliably exhibited.

In the above-described urine absorption pad 1, as shown in fig. 2, the adhesive portion 7 is disposed in a region overlapping the absorbent body 4 in the thickness direction in a planar view in a developed state, and is disposed with a widthwise central axis C extending in the longitudinal direction L interposed therebetween_LIs arranged on the central axis C in the width direction_LOn both sides of the base.

Arranged in the thickness direction at the bonding portion 7 in this wayA widthwise central axis C extending in the longitudinal direction L in a region overlapping the absorbent body 4 with the center of the axis being interposed therebetween_LIs arranged on the central axis C in the width direction_LIn the case of (2), the portion overlapping the absorbent body 4 in the thickness direction can be firmly bonded and fixed along the shape of the inner surface of the outer cover 10, and even if the legs and the buttocks of the wearer alternately move left and right while wearing the outer cover 10, the portion is easily deformed to follow the movement together with the outer cover 10, so that the diaper 1 is less likely to be rolled or peeled off during wearing.

As the adhesive usable for such an adhesive portion 7, any adhesive known in the art can be used, and for example, a pressure-sensitive adhesive mainly composed of a styrene-based copolymer such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), or styrene-isoprene-styrene (SIS) can be used.

In the urine absorption pad of the present invention, the amount and shape of the adhesive portion to be arranged are not particularly limited as long as the effects of the present invention are not impaired, and the adhesive portion may be arranged on the surface of the back sheet on the non-skin-facing surface side in any linear form such as one or two or more lines (stripe form), a dotted line form, a curved line form, a zigzag form, or the like in the longitudinal direction L. As described above, the adhesive portion may extend continuously in the longitudinal direction L or may extend intermittently.

In the present invention, as long as the effects of the present invention are not impaired, the various dimensions (for example, the length in the longitudinal direction, the length in the width direction, etc.) and the weight per unit area of the adhesive portion are not particularly limited, and any dimensions, weight per unit area, etc. can be adopted in consideration of the easiness of fixing the urine absorbent pad to the exterior body, the adhesiveness, etc.

[ surface sheet ]

In the above-described urine absorption pad 1, as shown in fig. 1 and 2, the topsheet 2 has a longitudinal outer shape in a developed state as follows in a plan view: at one end edge E in the longitudinal direction L of the urine absorption pad 1₁To the other end edge E₂Extend within a range of, andextending in a range from the vicinity of one end edge to the vicinity of the other end edge in the width direction W of the urine absorption pad 1. The topsheet 2 is disposed on the skin-facing surface side in the thickness direction of the urine absorbent pad 1, forms a contact surface that can be brought into contact with the skin of the wearer, i.e., the skin-facing surface of the urine absorbent pad 1, and is composed of a liquid-permeable sheet-like member.

As shown in fig. 1 and 2, the top sheet 2 has dimensions slightly larger than the absorbent body 4 disposed on the non-skin-facing surface side of the top sheet 2 in the longitudinal direction L and the width direction W, and a pair of side sheets 5, 5 are joined to the skin-facing surface at both ends of the top sheet 2 in the width direction W.

The liquid-permeable sheet-like member usable as the top sheet 2 is not particularly limited as long as it has various characteristics (for example, liquid permeability, skin touch, flexibility, strength, and the like) usable as a top sheet of a urine absorbent pad, and any liquid-permeable sheet-like member such as a nonwoven fabric such as a hot air nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a point-bond nonwoven fabric, and a porous resin film can be used.

When a nonwoven fabric is used as the surface sheet, the nonwoven fabric may have a single-layer structure or a multilayer structure of two or more layers. The type of the constituent fibers of the nonwoven fabric is not particularly limited, and examples thereof include hydrophilic fibers such as cellulose fibers and hydrophilized thermoplastic resin fibers. These fibers may be used alone or in combination of two or more.

Examples of the cellulose fibers that can be used as the constituent fibers of the nonwoven fabric include natural cellulose fibers (e.g., plant fibers such as cotton), regenerated cellulose fibers, purified cellulose fibers, and semi-synthetic cellulose fibers.

Examples of the thermoplastic resin fibers that can be used as the constituent fibers of the nonwoven fabric include fibers made of known thermoplastic resins such as olefin resins such as Polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), and polyamide resins such as 6-nylon. These resins may be used alone, or two or more kinds of resins may be used simultaneously.

The structure of the liquid-permeable sheet-like member used as the top sheet 2 is not particularly limited as long as the effect of the present invention is not impaired, and may have a sheet-like structure that is flat as a whole, or may have a concave-convex structure including a plurality of convex portions and concave portions (for example, a concave-convex structure having a waveform in cross section, a ridge-furrow structure, or the like). When the liquid-permeable sheet-like member has such a concavo-convex structure, each of the plurality of convex portions in the concavo-convex structure may have a solid internal structure or a hollow internal structure.

An arbitrary drug such as a plant-derived extract or a skin care agent may be applied to the skin-facing surface of the top sheet 2, or an intermediate sheet having predetermined liquid diffusibility and liquid permeability may be disposed on the non-skin-facing surface of the top sheet 2.

In the present invention, the shape, various dimensions, basis weight, and the like of the topsheet are not particularly limited as long as the topsheet can be used as a urine absorption pad, and any shape, various dimensions, basis weight, and the like can be adopted according to the desired liquid permeability, skin touch, flexibility, strength, and the like.

[ Back sheet ]

In the urine absorption pad 1 described above, as shown in fig. 2, the back sheet 3 has a vertically long outer shape in a planar view in a developed state as follows: at one end edge E in the longitudinal direction L of the urine absorption pad 1₁To the other end edge E₂And extends in a range from one end edge to the other end edge in the width direction W of the urine absorption pad 1. As shown in fig. 2, the back sheet 3 is disposed at a position on the non-skin-facing surface side in the thickness direction of the urine absorption pad 1 to form the non-skin-facing surface of the urine absorption pad 1, and is composed of a liquid-impermeable sheet member that prevents urine having passed through the absorbent member 4 from leaking to the outside of the urine absorption pad 1.

Further, a bonding portion 7 for bonding and fixing the urine absorbent pad 1 to the inner surface of the outer cover 10 is disposed on the surface of the back sheet 3 on the side not facing the skin.

The liquid-impermeable sheet-like member usable as the back sheet 3 is not particularly limited as long as it can prevent the permeation of urine discharged from the wearer, and for example, a hydrophobic nonwoven fabric formed of hydrophobic thermoplastic resin fibers (for example, various conjugate fibers such as polyolefin resin fibers, polyester resin fibers, and core-sheath conjugate fibers); a porous or nonporous resin film formed of a hydrophobic thermoplastic resin such as PE or PP; a laminate obtained by bonding a nonwoven fabric to the resin film; a known liquid impermeable sheet member such as an SMS nonwoven fabric is laminated.

Further, a leakage-preventing sheet formed of a thermoplastic resin film such as polyethylene may be disposed on the skin-facing surface side of the back sheet 3.

In the present invention, the shape, various sizes, weight per unit area, and the like of the back sheet are not particularly limited as long as the back sheet can be used as a urine absorption pad, and any shape, various sizes, weight per unit area, and the like can be adopted according to the desired leakage prevention performance, air permeability, strength, and the like.

[ absorbent body ]

In the above-described urine absorption pad 1, as shown in fig. 1 and 2, the absorbent body 4 has a longitudinal outer shape in a planar view in a developed state as follows: in the longitudinal central part L of the urine absorption pad 1_CAt one end edge E from the length direction L₁Nearby 1 st region A₁To the other end edge E₂Nearby 4 th area A₄And also in a region having a large range from the vicinity of one end edge to the vicinity of the other end edge of the width direction W in the width direction W.

The absorbent member 4 is disposed between the front sheet 2 and the back sheet 3 in the thickness direction of the urine absorbent pad 1, can absorb and retain urine of a wearer who has passed through the front sheet 2, and is formed of a predetermined water-absorbent member.

The absorbent body 4 is joined to the front sheet 2 on the skin-facing surface side and the back sheet 3 on the non-skin-facing surface side with an arbitrary adhesive such as a hot-melt adhesive.

The water-absorbent member usable as the absorbent body 4 is not particularly limited as long as it can absorb and retain urine discharged from a wearer, and a water-absorbent member known in the art can be used. Examples of such a water-absorbent member include a member in which at least one absorbent core made of a predetermined water-absorbent material is covered with a core wrap made of hydrophilic tissue paper or the like.

Examples of the water-absorbent material constituting the absorbent core include hydrophilic fibers, high-absorbent polymers, and the like, and more specifically, cellulose fibers such as ground pulp, cotton, rayon, and acetate fibers; particles formed from highly absorbent polymers such as sodium acrylate copolymers; mixtures of the above materials in any combination, and the like.

In the above-described urine absorbent pad 1, the absorbent member 4 is composed of an absorbent core made of a water-absorbent material and a core wrap covering the absorbent core.

In the above-described urine absorption pad 1, as shown in fig. 1 and 2, the absorbent body 4 has a unique structure including the deformation guide portion 43 and the narrow width portion 44, the deformation guide portion 43 is located at the widthwise central portion in a developed state in a plan view, extends in the longitudinal direction L, and is constituted by a slit portion which penetrates or does not penetrate, and the narrow width portion 44 is located at the lengthwise central portion L of the urine absorption pad 1_CThe length in the width direction of the (d) is relatively short.

By providing the absorbent body 4 having such deformation guide portions 43, when a force (leg-receiving force) is applied in the width direction W of the urine absorbent pad 1 from both legs of the wearer during wearing, as shown in fig. 6, the urine absorbent pad 1 is bent in the width direction W so that the portion where the deformation guide portions 43 are formed (i.e., the widthwise central portion) protrudes toward the skin-facing surface side with the deformation guide portions 43 extending in the longitudinal direction L as a base point, and the portion is likely to come into close contact with the crotch portion of the wearer, and therefore, more excellent fit can be exhibited.

Further, by extending the deformation guide portion 43 in the longitudinal direction L, there is also an advantage that urine discharged from the wearer can be diffused in the longitudinal direction L along the deformation guide portion 43, and more excellent absorption performance can be exhibited.

Further, in the urine absorption pad 1, as shown in fig. 1, the deformation guide portion 43 is positioned at the 1 st folding line L₁And a 3 rd folding line L₃And so as to cross the 2 nd fold line L₂In a manner extending in the longitudinal direction L.

When the deformation guide portion 43 extends in the longitudinal direction L in this manner, the central portion in the longitudinal direction L and the width direction W, which is the portion where the deformation guide portion 43 is formed, can be brought into close contact with the crotch portion of the wearer more accurately, and therefore, more excellent fit can be exhibited. Further, the guide portion 43 does not cross the 1 st folding line L due to deformation₁And a 3 rd folding line L₃These respective fold lines extend in the longitudinal direction L, and therefore have the advantage that: even if urine discharged from the wearer spreads in the longitudinal direction L along the deformation guide portion 43, the urine hardly flows along the 1 st folding line L₁And a 3 rd folding line L₃The respective folds of the pad 1 leak from the outer side in the width direction.

The form of the deformation guide portion 43 is not particularly limited as long as it can promote the deformation of the absorbent body 4 and thus the urine pad 1 as described above, and in addition to the slit portion that penetrates or does not penetrate as described above, for example, a low basis weight portion that is realized by a low basis weight of the water absorbent material, a compressed portion that is formed by compressing the absorbent body in the thickness direction by embossing or the like, or the like can be used.

In the urine absorption pad of the present invention, since it is not an essential constituent condition that the absorbent body has the deformation guide portion, the absorbent body may have, for example, a structure having a substantially uniform weight per unit area as a whole and having substantially flat surfaces on both the skin-facing surface side and the non-skin-facing surface side.

Further, in the urine absorption pad 1, as described above, the absorbent body 4 has the longitudinal direction central portion L of the urine absorption pad 1_CA narrow width portion 44 having a relatively short length in the width direction.

When the absorbent body 4 has such a narrow portion 44, the longitudinal center portion L of the urine absorption pad 1 can be made to be long when worn_CMore accurately clings to the crotch of the wearer, thereby exerting more excellent effectAnd (4) fitting. Further, in the urine absorption pad 1, the absorbent body 4 having relatively high rigidity is less likely to come into contact with the inner portions of the legs of the wearer, and therefore, there is an advantage that the wearer is less likely to feel a foreign body sensation.

In the urine absorption pad of the present invention, since it is not an essential constituent condition that the absorbent body has the narrow width portion, the absorbent body may have a structure in which the length in the width direction is constant in the longitudinal direction, for example.

In the present invention, as long as the absorbent material can be used as an absorbent material for a urine absorption pad, the shape, various sizes, weight per unit area, and the like of the absorbent material in a plan view are not particularly limited, and any shape (for example, a rectangular shape, an oval shape, an hourglass shape, and the like), various sizes, weight per unit area, and the like can be adopted in accordance with desired absorption performance, flexibility, strength, and the like.

The position at which the absorbent body is disposed is not particularly limited as long as it is a position including the longitudinal center portion of the urine absorption pad, and the absorbent body may be disposed, for example, so as to be offset to one side in the longitudinal direction of the urine absorption pad.

[ side sheet ]

In the above-described urine absorption pad 1, as shown in fig. 1, the pair of side sheets 5, 5 are disposed at both ends in the width direction W of the urine absorption pad 1 at the position of the skin-facing surface side of the top sheet 2, the pair of side sheets 5, 5 are formed of a pair of belt-like liquid-impermeable sheets extending in the longitudinal direction L, and when the urine absorption pad 1 is attached to the inner surface of the outer cover 10 (that is, when the urine absorption pad 1 is bent in the longitudinal direction L), the end edge portions on the inner side in the width direction of the pair of side sheets 5, 5 stand up to serve as leakage-preventing wall portions, thereby forming leakage-preventing wall portions.

The pair of side sheets 5, 5 are each positioned at one end edge E in the longitudinal direction L of the urine absorption pad 1 when viewed from above₁To the other end edge E₂Extend within the range of (a).

The outer ends in the width direction W of the pair of side sheets 5, 5 are joined to the outer ends in the width direction W of the back sheet 3 by any joining means (not shown) such as a hot melt adhesive to form fixed ends, while the inner ends in the width direction W of the pair of side sheets 5, 5 are not joined to any sheet member and form free ends.

As shown in fig. 1, an elastic member 6 such as an elastic yarn is disposed along the longitudinal direction L in each of the pair of side sheets 5, 5.

The tape-shaped liquid-impermeable sheet usable as the side sheet 5 is not particularly limited as long as it has various characteristics (for example, liquid impermeability, skin touch, flexibility, strength, and the like) usable as a side sheet of a urine absorbent pad, and for example, a hydrophobic nonwoven fabric (for example, a hydrophobic or hydrophobic spunbonded nonwoven fabric, a point-bonded nonwoven fabric, an SMS nonwoven fabric, and the like), a liquid-impermeable synthetic resin film, a laminate of the above materials, and the like can be used.

The shape, weight per unit area, thickness, and the like of the belt-shaped liquid-impermeable sheet that can be used as the side sheet are not particularly limited as long as the effects of the present invention are not impaired, and any shape, weight per unit area, thickness, and the like can be adopted according to the desired liquid-impermeable property, skin touch, flexibility, and the like.

In the urine absorption pad of the present invention, the provision of such side sheets is not an essential constituent requirement, and therefore the urine absorption pad may not be provided with the side sheets.

(elastic Member)

In the urine absorption pad 1, as shown in fig. 1, three (six in total) elastic members 6 are disposed in each of the pair of side sheets 5, 5 along the longitudinal direction L, and these elastic members 6 are used to contract the pair of side sheets 5, 5 in the longitudinal direction L and promote the rising of the inner end edges in the width direction W.

The elastic member 6 disposed on each of the pair of side sheets 5, 5 is not particularly limited as long as it can apply a contraction force in the longitudinal direction L to the urine absorption pad 1 via the pair of side sheets 5, 5 in an unfolded state, and for example, an elastic thread or a rubber strip made of natural rubber; an optional elastic member such as a member obtained by molding a thermoplastic elastomer such as polyurethane or ethylene-vinyl acetate copolymer (EVA) into a linear or strip shape.

The size, shape, and number of the elastic members 6 are not particularly limited as long as the pair of side sheets 5, 5 in the unfolded state and the contraction force in the longitudinal direction L can be applied to the urine absorbent pad 1 via the pair of side sheets 5, and for example, a longitudinal length of 1/2 or more, preferably 2/3 or more, of the longitudinal length (total length) of the entire urine absorbent pad 1 can be used as the longitudinal length of the elastic members 6, a fineness of 200dtex to 800dtex, preferably 300dtex to 700dtex can be used as the fineness of the elastic members 6, and further, two or three or more pieces of the elastic members 6 may be disposed in each of the side sheets of the pair of side sheets 5, 5.

[ circumferential seal part ]

As shown in fig. 1 and 2, the urine absorbent pad 1 described above has a peripheral seal portion which is intermittently arranged along the outer peripheral edge portion of the urine absorbent pad 1 in a plan view and which is formed by compressing the urine absorbent pad 1 in the thickness direction by embossing or the like.

As shown in FIGS. 1 and 2, the circumferential seal is included in the 1 st region A₁Is formed as a pair of 1 st seal portions 81, 81 extending in the longitudinal direction L at both ends in the width direction, in the 3 rd region A₃And 4 th region A₄Are formed at both end portions in the width direction from the 3 rd area A₃Up to the 4 th region A₄A pair of 2 nd seal portions 82, 82 extending in the longitudinal direction L, a 3 rd seal portion 83 formed at one end portion in the longitudinal direction L of the urine absorption pad 1, and a 4 th seal portion 84 formed at the other end portion in the longitudinal direction L.

In the urine absorption pad of the present invention, the configuration of the peripheral seal portion, that is, the arrangement of the seal portions is not limited to this form, but it is preferable that the urine absorption pad has the peripheral seal portions at both widthwise ends at least in the 1 st region and the 4 th region.

When the urine absorbent pad has such a circumferential seal portion, the rigidity of both end portions in the width direction where no absorbent body is present (i.e., the rigidity is relatively low) can be increased, and therefore, when the urine absorbent pad is attached to the inner surface of the outer cover and the outer cover is lifted up to be in close contact with the crotch portion of the wearer, the urine absorbent pad can be made less likely to be curled or peeled.

Further, in the case where the circumferential seal portions are not disposed at both widthwise end portions of at least the lengthwise central portion of the urine absorption pad, the seal portions having high rigidity are less likely to come into contact with the inner portions of the legs of the wearer, and therefore, there is an advantage that the wearer is less likely to feel a foreign body sensation.

The size, shape, arrangement position, and the like of each seal portion constituting the peripheral seal portion are not particularly limited as long as the effects of the present invention are not impaired, and any size, shape, arrangement position, and the like in consideration of desired rigidity, flexibility, conformability, and the like can be adopted.

In the urine absorption pad of the present invention, the provision of such a circumferential seal portion is not an essential constituent requirement, and therefore the urine absorption pad may not have the circumferential seal portion.

Next, another preferred embodiment of the urine absorption pad of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 7 and 8, a urine absorption pad 1' according to another embodiment of the present invention has an outer shape of a vertically long substantially rectangular shape having a longitudinal direction L and a width direction W in a plan view.

The urine absorbent pad 1 'also includes, as basic structures, a liquid-permeable front sheet 2' forming the skin-facing surface of the urine absorbent pad 1 ', a back sheet 3' forming the non-skin-facing surface of the urine absorbent pad 1 ', an absorbent member 4' disposed between the front sheet 2 'and the back sheet 3', and a pressure-sensitive adhesive portion 7 'disposed on the front surface of the back sheet 3' on the non-skin-facing surface side.

As shown in fig. 7, the urine absorption pad 1 ' also includes a pair of leakage preventing wall portions including a pair of side sheets 5 ', 5 ' and a plurality of elastic members 6 ', the pair of side sheets 5 ', 5 ' being positioned at both ends in the width direction W of the urine absorption pad 1 ' and being disposed on the skin-facing surface side of the top sheet 2 ' so as to extend in the longitudinal direction L, and the plurality of elastic members 6 ' being fixed to the respective side sheets of the pair of side sheets 5 ', 5 ' and extending in the longitudinal direction L. The pair of leakage preventing walls can be formed by the elastic member 6 ' contracting the pair of side sheets 5 ', 5 ' in the longitudinal direction L and raising the widthwise inner end edges of the pair of side sheets 5 ', 5 ' when the urine absorbent pad 1 ' is attached to the inner surface of the outer body (i.e., when the urine absorbent pad 1 ' is bent in the longitudinal direction L).

Further, in the urine absorbent pad 1 ', as shown in FIGS. 7 and 8, when viewed in plan view in an unfolded state, the edge E' is located at one side end edge E 'in the longitudinal direction L of the urine absorbent pad 1'₁And a second side edge E 'in the longitudinal direction L'₂Three folding lines extending in the width direction W for folding the urine absorbent pad 1 'in the longitudinal direction L, i.e., one side end edge E' located closest to the urine absorbent pad 1 'in the longitudinal direction L'₁Of position of (1) a fold line L'₁And a second side edge E ' located closest to the urine-absorbing pad 1 ' in the longitudinal direction L '₂Of position of (2)'₂And the 1 st fold line L'₁And a 2 nd fold line L'₂Of 3 < rd > fold line L'₃And further has a side edge E 'extending in the longitudinal direction L'₁And a 1 st fold line L'₁1 st region A 'formed by division'₁And the 1 st fold line L'₁And a 3 rd fold line L'₃Divided 2 nd region A'₂And the third fold line L 'is formed by the third fold line L'₃And a 2 nd fold line L'₂A 3 rd region A'₃And the 2 nd fold line L'₂And a second side edge E 'in the longitudinal direction L'₂4 th region A'₄。

The self-developed state of the urine absorbent pad 1 ' having the three folding lines is shown by the 2 nd folding line L ' in FIG. 9(a) '₂Is bent in the longitudinal direction L to form a boundary layer as a 3 rd region A'₃Skin-facing surface and 4 th region A'₄Is opposed to each other, and is then formed into a 3 rd fold line L 'as shown in FIG. 9(b) from this state'₃Is bent in the longitudinal direction L to form a boundary layer of 4 th region A'₄The non-skin-facing surface and the 2 nd region A'₂Are opposed to each other (in other words, the 2 nd region A'₂Skin-facing surface and the 3 rd region A'₃The skin-facing surfaces of (b) face each other), and further fromIn this state, as shown in FIG. 9(c), the first fold line L'₁Is bent in the longitudinal direction L to form a boundary layer as a 1 st region A'₁Skin-facing surface and the 3 rd region A'₃Can be folded into a compact form as shown in fig. 9(d) by facing the non-skin-facing surfaces of (a).

Further, by providing the urine absorption pad 1 ' with at least two folding lines extending in the width direction W, when attached to the inner surface of the exterior body 10 ' such as a disposable diaper as shown in fig. 10 a, the urine absorption pad is easily deformed into a shape curved in the longitudinal direction L (i.e., a substantially U-shape), and is easily matched to the shape of the inner surface of the exterior body 10 '.

In particular, in the above-mentioned urine absorbent pad 1 ', the 1 st fold line L'₁And a 2 nd fold line L'₂Also has a 3 rd broken line L'₃Accordingly, the urine absorption pad 1 'is more easily deformed into a shape curved in the longitudinal direction L, and thus can be more accurately fitted to the inner surface shape of the exterior body 10'.

In the above-mentioned urine absorbent pad 1 ', as shown in FIG. 7, the 3 rd fold line L'₃Is located at the longitudinal center of the urine absorption pad 1'. Thus, when the urine absorbent pad 1 'is attached to the inner surface of the outer body 10' as shown in FIGS. 10(a) and 10(b), the 3 rd fold line L 'located at the center in the longitudinal direction can be used'₃The urine absorbent pad 1 'can be folded in the longitudinal direction L so that the surface sheet 2' is positioned inside (see FIG. 10(a)), and the 3 rd fold line L 'can be formed'₃Since the urine absorption pad 1 ' is adhesively fixed to the inner surface of the outer package 10 ' as a positioning mark (see fig. 10(b)), the urine absorption pad can be easily attached to an appropriate position on the inner surface of the outer package 10 '.

Here, the "longitudinal central portion" refers to a longitudinal central axis C extending in the width direction W_WCentered and spaced apart from the longitudinal central axis C in the longitudinal direction L_WIs a portion within 15% of the entire length of the urine absorption pad 1. The same applies to the widthwise central portion.

In the above-mentioned urine absorbent pad 1 ', as shown in FIG. 8, the adhesive portion 7' extends along the 1 st fold line L 'in the longitudinal direction L'₁And a 2 nd fold line L'₂And a 3 rd fold line L'₃Are arranged in the form of respective fold lines.

In the urine absorbent pad 1 ', the adhesive portion 7' is disposed so as to straddle two folding lines near the longitudinal end in the longitudinal direction L, i.e., the one-side end edge E 'located closest to the longitudinal direction L'₁Of position of (1) a fold line L'₁And a second side edge E 'located closest to the longitudinal direction L'₂Of position of (2)'₂Each of the two folding lines can have the 1 st folding line L'₁And a 2 nd fold line L'₂Since the portion (1) is firmly adhered and fixed to the inner surface of the outer package body 10 ', the urine absorption pad 1 ' can be lifted up at the time of mounting along the 1 st fold line L '₁And a 2 nd fold line L'₂The end portion in the longitudinal direction L is less likely to be curled up to bend the base point.

Therefore, the urine absorption pad 1 'is easily adapted to the inner surface shape of the exterior body 10', and is less likely to be curled when lifted up at the time of attachment.

In the above-mentioned urine absorbent pad 1 ', the adhesive portion 7' is also positioned astride the 1 st fold line L 'in the longitudinal direction L'₁And a 2 nd fold line L'₂Of 3 < rd > fold line L'₃Can be extended to have the 3 rd fold line L'₃Is firmly adhered and fixed to the inner surface of the exterior body 10 ', and therefore, the 3 rd fold line L ' is less likely to occur '₃Is provided with the 3 rd folding line L'₃May peel off from the inner surface of the exterior body 10' or may be accidentally bent. Thus, the urine absorbent pad 1' can be more accurately brought into close contact with the crotch of the wearer, and is excellent in comfort and leakage prevention during wearing.

Further, as shown in FIGS. 7 and 8, the above-mentioned urine absorption pad 1 ' is viewed from the 1 st fold line L ' in plan view in an unfolded state '₁The 1 st fold line L ' as the longitudinal length to the one end edge 41 ' in the longitudinal direction L of the absorbent body 4 '₁And an imaginary line EA ' passing through the one end edge 41 ' in the longitudinal direction L of the absorbent body 4 '₁Distance d 'between'₁₁L 'is from the 1 st fold line'₁To the urine-absorbing pad 1One end edge E 'in the longitudinal direction L'₁Length d 'in the longitudinal direction of'₁₂Is long and is L 'from the 2 nd fold line'₂The 2 nd fold line L ' as the longitudinal length from the other end edge 42 ' in the longitudinal direction L of the absorbent body 4 '₂And an imaginary line EA 'passing through the other end edge 42' of the absorbent body 4 'in the longitudinal direction L'₂Distance d 'between'₂₁L 'from fold line 2'₂To the other end edge E 'in the longitudinal direction L of the urine absorption pad 1'₂Length d 'in the longitudinal direction of'₂₂Is half as long.

Thus, in the urine absorbent pad 1 ', the folding line L ' is formed from the 1 st folding line '₁And a 2 nd fold line L'₂The length ratio in the longitudinal direction from each end edge in the longitudinal direction L of the absorbent body 4 'is from the 1 st fold line L'₁And a 2 nd fold line L'₂The length of the pad 1 'is half of the length in the longitudinal direction from each end edge in the longitudinal direction L, and is set from the 1 st fold line L'₁And a 2 nd fold line L'₂In the region between the respective edges in the longitudinal direction L of the urine absorption pad 1 ', the region where the absorbent body 4 ' is disposed (i.e., the region having relatively high rigidity) can be secured to be large in the longitudinal direction L, and therefore, the end portions in the longitudinal direction L of the urine absorption pad 1 ' can be made less likely to be curled, and can be easily recovered even if temporarily curled.

In the present invention, the folding form of the urine absorption pad, the position of each folding line, the number of folding lines, and the like are not limited to the above-described embodiments, as long as the effects of the present invention are not hindered.

For example, the urine absorbent pad of the present invention may be folded compactly by folding in the longitudinal direction L so that the skin-facing surface of the 3 rd region and the skin-facing surface of the 4 th region face each other at the 2 nd folding line as a boundary from the unfolded state, folding in the longitudinal direction L so that the skin-facing surface of the 1 st region and the skin-facing surface of the 2 nd region face each other at the 1 st folding line as a boundary, and thereafter folding in the longitudinal direction L so that the non-skin-facing surface of the 1 st region and the non-skin-facing surface of the 4 th region face each other at the 3 rd folding line as a boundary (in other words, by facing the skin-facing surface of the 2 nd region and the skin-facing surface of the 3 rd region face each other).

Note that, as for the fold line, if at least two fold lines (i.e., the 1 st fold line and the 2 nd fold line) extending in the width direction are provided, the above-described 3 rd fold line and other fold lines (i.e., four or more fold lines in total) may be provided within a range not to impair the effect of the present invention.

Hereinafter, various constituent members of the urine absorption pad 1' of the above-described embodiment will be described.

In the urine absorbing pad 1 ', as shown in fig. 8, a bonding portion 7 ' for bonding and fixing the urine absorbing pad 1 ' to the inner surface of an exterior body 10 ' such as a disposable diaper is arranged in a form of six strips extending continuously in the longitudinal direction L and arranged at predetermined intervals in the width direction W on the surface of the back sheet 3 ' on the non-skin-facing surface side.

Since a release sheet (not shown) for protecting the adhesive portion 7 'is usually bonded to the surface of the adhesive portion 7', when the urine absorbent pad 1 'is attached to the inner surface of the outer package 10', the adhesive portion 7 'is pressed against the inner surface of the outer package 10' after the release sheet is peeled off, whereby the urine absorbent pad 1 'can be adhesively fixed to the inner surface of the outer package 10'.

Further, as described above, the adhesive portion 7 'extends continuously in the longitudinal direction L and extends so as to straddle each of the 1 st fold line, the 2 nd fold line, and the 3 rd fold line in the longitudinal direction L, but the adhesive portion 7' may be disposed so as to straddle at least each of the 1 st fold line and the 2 nd fold line in the longitudinal direction L, and other disposition is not particularly limited, and for example, the adhesive portion may not straddle other fold lines (for example, the 3 rd fold line, etc.) than the 1 st fold line and the 2 nd fold line in the longitudinal direction L.

As shown in fig. 7, the urine absorption pad 1 'further includes a pair of leakage preventing wall portions including a pair of side sheets 5', 5 'and an elastic member 6', the pair of side sheets 5 ', 5' being positioned at both ends in the width direction W and being disposed on the surface of the skin-facing surface side of the top sheet 2 'so as to extend in the longitudinal direction L, the elastic member 6' being fixed to each of the pair of side sheets 5 ', 5' and extending in the longitudinal direction L, and the adhesive portion 7 'extending in the longitudinal direction to a position further outward in the longitudinal direction than the longitudinally fixed end of the elastic member 6', as shown in fig. 11.

In fig. 11, one end portion of the adhesive portion 7 'in the longitudinal direction L is located on the outer side in the longitudinal direction than an imaginary line 61' including one fixed end of the elastic member 6 'and extending in the width direction W, and the other end portion of the adhesive portion 7' in the longitudinal direction L is also located on the outer side in the longitudinal direction than an imaginary line 62 'including the other fixed end of the elastic member 6' and extending in the width direction W.

In general, when the urine absorption pad has a pair of leakage preventing wall portions that rise up due to the contractile force of the elastic member, although good leakage preventing performance can be exhibited, there is a possibility that the urine absorption pad, after being mounted on the inner surface of the outer casing, contracts inward in the longitudinal direction due to the contractile force of the elastic member, and the end portions in the longitudinal direction thereof are easily curled up, but in the above-described urine absorption pad 1 ', the adhesive portion 7 ' extends to the outer side in the longitudinal direction than the longitudinally fixed end of the elastic member 6 ', and therefore, the portion to which the contractile force of the elastic member 6 ' acts can be firmly adhered and fixed to the inner surface of the outer casing, and the end portions in the longitudinal direction L of the urine absorption pad 1 ' can be made less likely to be curled up.

In the above-described urine absorbent pad 1 ', as shown in fig. 8, the adhesive portion 7 ' is disposed in a region overlapping the absorbent body 4 ' in the thickness direction in a planar view in a developed state, and is separated by a widthwise central axis C extending in the longitudinal direction L_LIs arranged on the central axis C in the width direction_LOn both sides of the base.

The adhesive portion 7 'is arranged in a region overlapping the absorbent body 4' in the thickness direction in this manner, and is separated by a widthwise central axis C extending in the longitudinal direction L_LIs arranged on the central axis C in the width direction_LIn the case of (2), the portion overlapping the absorbent body 4 ' in the thickness direction can be firmly bonded and fixed along the shape of the inner surface of the outer package 10 ', and the legs and the buttocks of the wearer can be further laterally fixed even when the outer package 10 ' is wornThe absorbent pad 1 'is not likely to be rolled or peeled off during wearing because the absorbent pad is likely to deform along with the outer package 10' by alternating movement.

As an adhesive usable for such a bonding portion 7', the same adhesive as that for the bonding portion 7 of the urine absorbent pad 1 described above can be used.

The amount of arrangement, the shape of arrangement, various dimensions (for example, length in the longitudinal direction, length in the width direction, etc.), the weight per unit area, and the like of the adhesive portion 7' are also the same as those of the adhesive portion 7 of the urine absorbent pad 1 described above.

In the above-described urine absorption pad 1 ', as shown in fig. 7 and 8, the top sheet 2' has a longitudinal outer shape in a developed state as follows in a plan view: at one end edge E 'in the longitudinal direction L from the urine absorption pad 1'₁To the other side edge E'₂And extends in a range from the vicinity of one end edge to the vicinity of the other end edge in the width direction W of the urine absorption pad 1'. The topsheet 2 ' is disposed on the skin-facing surface side in the thickness direction of the urine absorbent pad 1 ', forms a contact surface that can be brought into contact with the skin of the wearer, that is, the skin-facing surface of the urine absorbent pad 1 ', and is composed of a liquid-permeable sheet-like member.

As shown in fig. 7 and 8, the top sheet 2 'has dimensions slightly larger than the absorbent body 4' disposed on the non-skin-facing surface side of the top sheet 2 'in the longitudinal direction L and the width direction W, and a pair of side sheets 5' and 5 'are joined to the skin-facing surface side of both end portions of the top sheet 2' in the width direction W.

The liquid-permeable sheet-like member that can be used as the top sheet 2' can be the same as the top sheet 2 of the urine absorption pad 1 described above.

An arbitrary drug such as a plant-derived extract or a skin care agent may be applied to the skin-facing surface of the top sheet 2 ', or an intermediate sheet having predetermined liquid diffusibility and liquid permeability may be disposed on the non-skin-facing surface of the top sheet 2'.

The outer shape, various dimensions, basis weight, and the like of the topsheet 2' are the same as those of the topsheet 2 of the urine absorption pad 1 described above.

In the above-described urine absorption pad 1 ', as shown in fig. 8, the back sheet 3' has a longitudinal outer shape in a developed state as follows in a plan view: at one end edge E 'in the longitudinal direction L from the urine absorption pad 1'₁To the other side edge E'₂And extends in a range from one end edge to the other end edge in the width direction W of the urine absorption pad 1'. As shown in fig. 8, the back sheet 3 ' is disposed at a position on the non-skin-facing surface side in the thickness direction of the urine absorption pad 1 ' to form the non-skin-facing surface of the urine absorption pad 1 ', prevents urine having passed through the absorbent member 4 ' from leaking to the outside of the urine absorption pad 1 ', and is made of a liquid-impermeable sheet member.

Further, an adhesive portion 7 'for adhesively fixing the urine absorption pad 1' to the inner surface of the exterior body 10 'is disposed on the surface of the back sheet 3' on the side not facing the skin.

The liquid impermeable sheet member usable as the back sheet 3' may be the same as the back sheet 3 of the urine absorbent pad 1 described above.

Further, a leakage-preventing sheet formed of a thermoplastic resin film such as polyethylene may be disposed on the skin-facing surface side of the back sheet 3'.

The shape, various dimensions, weight per unit area, and the like of the back sheet 3' are the same as those of the back sheet 3 of the urine absorbent pad 1 described above.

In the above-described urine absorption pad 1 ', as shown in fig. 7 and 8, the absorbent body 4' has a longitudinal outer shape in a planar view in a developed state as follows: at one end edge E 'from the longitudinal direction L centering on the longitudinal direction center portion of the urine absorbent pad 1'₁Nearby region 1A'₁To the other side edge E'₂Nearby 4 th region A'₄And also in a region having a large range from the vicinity of one end edge to the vicinity of the other end edge of the width direction W in the width direction W.

The absorbent member 4 ' is disposed between the front sheet 2 ' and the back sheet 3 ' in the thickness direction of the urine absorbent pad 1 ', can absorb and retain urine of a wearer that has passed through the front sheet 2 ', and is formed of a predetermined water-absorbent member.

The absorbent body 4 ' is joined to the front sheet 2 ' on the skin-facing surface side and the back sheet 3 ' on the non-skin-facing surface side with an arbitrary adhesive such as a hot-melt adhesive.

As the water-absorbent member usable as the absorbent member 4', the same one as the absorbent member 4 of the urine absorbent pad 1 described above can be used.

In the urine absorption pad 1 ', as shown in fig. 7 and 8, the absorbent body 4 ' has a unique structure including the deformation guide portion 43 ' and the narrow width portion 44 ', the deformation guide portion 43 ' is located at the widthwise central portion in a developed state in a plan view, extends in the longitudinal direction L, and is constituted by a slit portion that penetrates or does not penetrate, and the widthwise length at the lengthwise central portion of the urine absorption pad 1 ' is relatively short at the narrow width portion 44 '.

By providing the absorbent body 4 'with such a deformation guide portion 43', the urine pad 1 'is easily bent in the width direction W so that the portion where the deformation guide portion 43' is formed (i.e., the widthwise central portion) protrudes toward the skin-facing surface side with the deformation guide portion 43 'extending in the longitudinal direction L as a base point, and is easily deformed so that the cross-sectional shape in the width direction W becomes substantially W-shaped, when lifting up at the time of attachment, as shown in fig. 12, and therefore, the widthwise central portion of the urine pad 1' is easily brought into close contact with the crotch portion of the wearer, and more excellent fit can be exhibited.

Further, by extending the deformation guide portion 43 'in the longitudinal direction L, urine discharged from the wearer can be diffused in the longitudinal direction L along the deformation guide portion 43', and further, there is an advantage that more excellent absorption performance can be exhibited.

Further, in the urine absorption pad 1 ', as shown in fig. 8, the deformation guide portion 43 ' and the adhesive portion 7 ' do not overlap in the thickness direction.

When the deformation guide portion 43 'and the adhesive portion 7' do not overlap in the thickness direction as described above, the deformation by the deformation guide portion 43 'is more easily obtained when lifting up at the time of mounting, and therefore, the above-described operational effect, that is, the operational effect that the widthwise central portion of the urine absorption pad 1' is easily brought into close contact with the crotch portion of the wearer and more excellent fit is exhibited, can be more reliably exhibited.

Furthermore, in the urine absorbent pad 1 ', as shown in FIG. 7, the deformation guide portion 43 ' is located at the 1 st fold line L '₁And a 2 nd fold line L'₂And so as to cross fold line 3L'₃In a manner extending in the longitudinal direction L.

When the deformation guide portion 43 'extends in the longitudinal direction L in this manner, the central portion in the longitudinal direction L and the width direction W, which is the portion where the deformation guide portion 43' is formed, can be brought into close contact with the crotch portion of the wearer more accurately, and therefore, more excellent fit can be exhibited. Moreover, the deformation guide part 43 'does not cross the 1 st fold line L'₁And a 2 nd fold line L'₂In the longitudinal direction L, thereby also having the advantage of: even if the urine discharged from the wearer spreads in the longitudinal direction L along the deformation guide portion 43 ', the urine hardly flows along the 1 st folding line L'₁And a 2 nd fold line L'₂The respective folds of the pad 1' are leaked from the outer side in the width direction.

The deformation guide portion 43' can be in the same form as the deformation guide portion 43 of the urine absorption pad 1 described above.

Further, in the urine absorption pad 1 ', as described above, the absorbent body 4' has the narrow width portion 44 'having a relatively short length in the width direction at the longitudinal direction central portion of the urine absorption pad 1'.

When the absorbent body 4 ' has such a narrow portion 44 ', the longitudinal center portion of the urine absorbent pad 1 ' can be brought into close contact with the crotch portion of the wearer more accurately when worn, and therefore, more excellent fit can be exhibited. Further, the absorbent body 4 'having relatively high rigidity in the urine absorption pad 1' is less likely to come into contact with the inner portions of the legs of the wearer, and therefore, there is an advantage that the wearer is less likely to feel a foreign body sensation.

The shape, various sizes, basis weights, and positions of arrangement of the absorbent member 4' in a plan view are the same as those of the absorbent member 4 of the urine absorbent pad 1.

In the above-described urine absorption pad 1 ', as shown in fig. 7, the pair of side sheets 5 ', 5 ' are disposed at both end portions in the width direction W of the urine absorption pad 1 ' at positions on the skin-facing surface side of the top sheet 2 ', the pair of side sheets 5 ', 5 ' are formed of a pair of belt-like liquid-impermeable sheets extending in the longitudinal direction L, and when the urine absorption pad 1 ' is attached to the inner surface of the outer cover 10 ' (that is, when the urine absorption pad 1 ' is bent in the longitudinal direction L), the pair of side sheets 5 ', 5 ' are contracted in the longitudinal direction L by the plurality of elastic members 6 ' fixed to the respective side sheets of the pair of side sheets 5 ', 5 ' and extending in the longitudinal direction L, and the end edge portions on the inner sides in the width direction of the pair of side sheets 5 ', 5 ' are raised, whereby a pair of leakage preventing walls can be formed.

Further, each of the pair of side sheets 5 ', 5 ' is located at one end edge E ' in the longitudinal direction L of the urine absorbent pad 1 ' in a plan view '₁To the other side edge E'₂Extend within the range of (a).

The outer ends in the width direction W of the pair of side sheets 5 ' and 5 ' are joined to the outer ends in the width direction W of the back sheet 3 ' by any joining means (not shown) such as a hot melt adhesive to form fixed ends, while the inner ends in the width direction W of the pair of side sheets 5 ' and 5 ' are not joined to any sheet member and form free ends.

As shown in fig. 7, elastic members 6 ' such as elastic threads are disposed along the longitudinal direction L in each of the pair of side sheets 5 ' and 5 '.

The belt-like liquid-impermeable sheet usable as the side sheet 5' can use the same members as those of the side sheet 5 of the urine absorbent pad 1 described above.

The shape, weight per unit area, thickness, and the like of the belt-like liquid-impermeable sheet usable as the side sheet 5' are the same as those of the side sheet 5 of the urine-absorbent pad 1 described above.

In the above-described urine absorption pad 1 ', as shown in fig. 7, three (six in total) elastic members 6 ' are disposed in each of the pair of side sheets 5 ' and 5 ' along the longitudinal direction L, and these elastic members 6 ' are used to contract the pair of side sheets 5 ' and 5 ' in the longitudinal direction L and promote the rising of the inner end edges in the width direction W.

The elastic member 6 ' disposed on each of the pair of side sheets 5 ', 5 ' may be the same as the elastic member 6 of the urine absorption pad 1 described above.

The elastic members 6' are also the same in size, shape, and number as the elastic members 6 of the urine absorption pad 1.

As shown in fig. 7 and 8, the urine absorbent pad 1 ' described above has a peripheral seal portion which is intermittently arranged along the outer peripheral edge portion of the urine absorbent pad 1 ' in a plan view and which is formed by compressing the urine absorbent pad 1 ' in the thickness direction by embossing or the like.

As shown in FIGS. 7 and 8, the circumferential seal part is included in the 1 st region A'₁Are formed as a pair of 1 st seal portions 81 ', 81 ' extending in the longitudinal direction L in the 3 rd region A '₃And 4 th region A'₄Are formed in the 3 rd region A 'at both ends in the width direction'₃Up to region 4A'₄A pair of 2 nd seal portions 82 ', 82 ' extending in the longitudinal direction L, a 3 rd seal portion 83 ' formed at one end portion in the longitudinal direction L of the urine absorption pad 1 ', and a 4 th seal portion 84 ' formed at the other end portion in the longitudinal direction L.

In the urine absorption pad 1 ', the configuration of the circumferential seal portion, that is, the arrangement of the seal portions is not limited to this form, but it is preferable that the urine absorption pad 1' has the circumferential seal portions at both ends in the width direction at least in the 1 st region and the 4 th region.

When the urine absorbent pad 1' has such a circumferential seal portion, the rigidity of both ends in the width direction where the absorbent body is not present (i.e., the rigidity is relatively low) can be increased, and therefore, the urine absorbent pad can be made less likely to be curled or peeled off when lifted up at the time of attachment.

Further, in the case where the circumferential seal portions are not disposed at least at both widthwise end portions of the lengthwise central portion of the urine absorption pad 1', the seal portions having high rigidity are less likely to come into contact with the inner portions of both legs of the wearer, and therefore, there is an advantage that the wearer is less likely to feel a foreign body sensation.

The dimensions, shapes, arrangement positions, and the like of the respective seal portions constituting the peripheral seal portion of the urine absorption pad 1' are the same as those of the peripheral seal portion of the urine absorption pad 1 described above.

The urine absorption pad of the present invention is not limited to the above-described embodiments, and can be appropriately combined, substituted, modified, and the like without departing from the object and spirit of the present invention. In the present specification, ordinal numbers such as "1 st", "2 nd", and the like are used to distinguish items to which the ordinal numbers refer, and do not indicate the order, priority, importance, and the like of the items.