阅读说明：本技术 成人一次性尿片 (Disposable diaper for adult ) 是由 白井敦子 于 2019-08-08 设计创作，主要内容包括：成人一次性尿片1具有：吸收体2、将该吸收体2内包的层叠片3以及左右的立起性褶裥部4、5,且被划分出前部F、中部M以及后部B,该吸收体2在该前部F与该中部M的边界区域具有左右的第1切入部8、9,并且在该中部M与该后部B的边界区域具有左右的第2切入部10、11,该层叠片3在该前部F与该中部M的边界区域具有朝向该第1切入部8、9延伸的左右的第3切入部18、19,位于该中部M处的该吸收体2的左右侧部形成沿着穿着者的裆部的大腿内侧对置地弯曲而使用的左右的大腿部吸收体6、7,在该层叠片3,在该左右的大腿部吸收体6、7的根部且为与穿着者对置面相反侧的区域,设置有弹性体22a-22d。(The adult disposable diaper 1 has: an absorbent body 2, a laminate sheet 3 enclosing the absorbent body 2, and left and right standing gather portions 4, 5, and divided into a front portion F, a middle portion M, and a rear portion B, the absorbent body 2 having left and right 1-cut portions 8, 9 in a boundary region between the front portion F and the middle portion M, and left and right 2-cut portions 10, 11 in a boundary region between the middle portion M and the rear portion B, the laminate sheet 3 having left and right 3-cut portions 18, 19 extending toward the 1-cut portions 8, 9 in a boundary region between the front portion F and the middle portion M, left and right thigh absorbent bodies 6, 7 formed at left and right side portions of the absorbent body 2 at the middle portion M and used by bending to face each other along the inner thighs of a wearer's crotch portion, left and right thigh absorbent bodies 6, 7 at the root portions of the left and right thigh absorbent bodies 6, 7 in the laminate sheet 3 and at a region opposite to the wearer's facing surface, resilient bodies 22a-22d are provided.)

1. A disposable adult diaper having: an absorbent body; a laminated sheet obtained by laminating a plurality of sheets so as to enclose the absorbent body; and left and right standing gather portions extending in the longitudinal direction on the wearer-facing surface of the laminate sheet,

and the disposable adult diaper is divided into a front part, a middle part and a rear part corresponding to the lower abdomen part, the crotch part and the buttocks of a wearer respectively,

the disposable adult diaper is characterized in that,

the absorber has left and right 1-th cut parts extending inward in the width direction of the absorber at a boundary region between the front part and the middle part, and has left and right 2-th cut parts extending inward in the width direction of the absorber at a boundary region between the middle part and the rear part,

the laminated sheet has left and right 3 rd cut parts extending inward in the width direction of the laminated sheet toward the 1 st cut part in a boundary region between the front part and the middle part,

the left and right side portions of the absorbent body positioned at the center portion form left and right thigh absorbent bodies that are used by bending oppositely along the inner thighs of the wearer's crotch,

in the laminate sheet, an elastic body is provided in a region at the root of the left and right thigh absorbers on the side opposite to the wearer-facing surface.

2. Disposable diaper for adults according to claim 1,

the laminated sheet has left and right 4 th cut portions extending inward in the width direction of the laminated sheet toward the 2 nd cut portion in a boundary region between the middle portion and the rear portion.

3. Disposable diaper for adults according to claim 1,

the disposable adult diaper has a leakage preventing structure for covering both the wearer-facing surface and the opposite surface thereof from the front end to the base of the left and right thigh absorbers.

Technical Field

The present invention relates to disposable adult diapers.

Background

As a disposable diaper for adults, as shown in fig. 6, a diaper 101 is known which has: a gourd-shaped absorbent core 102 having a narrowed central portion in the longitudinal direction, a liquid-permeable topsheet 103 and a liquid-impermeable backsheet 104 sandwiching the absorbent core 102, and left and right standing gather portions 105 and 106 extending in the longitudinal direction on the topsheet 103.

In the diaper 101, the central portion corresponding to the crotch of the wearer is narrowed, and the absorbent core 102 located at the central portion is smaller. Therefore, when the wearer lies on his or her side, the excreted urine may not be sufficiently absorbed by the absorbent core 102 in the middle portion and may leak to the outside.

Patent document 1 discloses a disposable diaper having: the absorbent core is rectangular, a rectangular front sheet and a rectangular back sheet are sandwiched between the absorbent core, and left and right sheets having a three-dimensional leakproof structure extending in the longitudinal direction of the front sheet are formed. The absorbent core is configured such that: the front and rear regions have notches extending inward in the width direction and inward in the longitudinal direction from the left and right side edges thereof. When the diaper is worn, the portions between the front and rear slits of the absorbent core are bent toward the surface sheet, and the absorbent core is deformed into a boat shape. The left and right leakage preventing structures form free end portions of the sheet material to stand up.

The diaper has a low fit to the wearer because the absorbent core is deformed into the shape of the boat. Therefore, when the wearer lies on his or her side, the excreted urine may leak to the outside through the gap formed between the three-dimensional leakage prevention structure-forming sheet and the wearer.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5982272

Disclosure of Invention

An object of the present invention is to provide a disposable adult diaper having excellent liquid leakage prevention when a wearer lies on his side. Another object of the present invention is to provide a disposable adult diaper having excellent fit to a wearer.

One aspect of the present invention is a disposable adult diaper having: an absorbent body; a laminated sheet obtained by laminating a plurality of sheets so as to enclose the absorbent body; and left and right standing gathers extending in the longitudinal direction on the wearer-facing surface of the laminate sheet and divided into front, middle, and back portions corresponding to the lower abdomen, crotch, and buttocks of the wearer, respectively, characterized in that the absorbent body has left and right 1-cuts extending inward in the width direction of the absorbent body in a boundary region between the front portion and the middle portion, and has left and right 2-cuts extending inward in the width direction of the absorbent body in a boundary region between the middle portion and the back portion, the laminate sheet has left and right 3-cuts extending inward in the width direction of the laminate sheet toward the 1-cut in a boundary region between the front portion and the middle portion, and left and right thigh absorbent bodies bent to face each other along the inside of the thighs of the wearer are formed at the left and right side portions of the absorbent body located at the middle portion, in the laminate sheet, an elastic body is provided in a region at the root of the left and right thigh absorbers on the side opposite to the wearer-facing surface.

The disposable adult diaper according to another aspect of the present invention may be: the laminated sheet has left and right 4 th cut portions extending inward in the width direction of the laminated sheet toward the 2 nd cut portion in a boundary region between the middle portion and the rear portion. The disposable adult diaper according to still another aspect of the present invention may be: the leakage preventing structure covers both the wearer-facing surface and the opposite surface thereof from the front ends to the base portions of the left and right thigh absorbers.

The invention is not limited to the solution described above. Further details, features, functions and/or effects of the present invention will become more apparent from the following description of preferred exemplary embodiments of the present invention.

Drawings

Fig. 1 is a perspective view of a disposable adult diaper as one embodiment of the present invention.

Fig. 2 is a plan view of a disposable adult diaper according to an embodiment of the present invention, in which an elastic body does not exert a contractive force.

Fig. 3 is a sectional view taken along line III-III of the disposable adult diaper of fig. 2 in a state of being worn.

Fig. 4 is a plan view showing a disposable adult diaper according to another embodiment of the present invention in a state where an elastic body does not exert a contractive force.

Fig. 5 is a V-V line sectional view of the disposable adult diaper of fig. 4 in a state of being worn.

Fig. 6 is a plan view showing a conventional disposable adult diaper in a state where an elastic body does not exert a contractive force.

Detailed Description

Fig. 1 to 3 show a disposable adult diaper 1 as one embodiment of the present invention. The diaper 1 is attached to an inner surface of a pants-type disposable diaper or a wearing article, not shown, and used as a urine receiving pad, an incontinence pad, or the like. As shown in fig. 1, the diaper 1 has: an absorbent body 2; a laminate sheet 3 obtained by laminating a plurality of sheets so as to enclose the absorbent body 2; left and right standing gather portions 4, 5 extending in the longitudinal direction on the wearer-facing surface 3a of the laminate sheet 3; and left and right thigh absorbers 6, 7 that are used while being bent so as to face each other along the inner thigh of the wearer's crotch.

As shown in fig. 1 and 2, the diaper 1 is divided into a front portion F, a middle portion M, and a rear portion B corresponding to the lower abdomen, crotch, and buttocks of the wearer, respectively. The diaper 1 has a longitudinal direction as a front-rear direction and a width direction as a left-right direction.

The absorbent body 2 has liquid-retaining properties, and rapidly absorbs liquid such as urine discharged from the wearer and retains the liquid therein. The raw materials of the absorbent body 2 include, for example: a water-absorbent fiber obtained by defibering a rolled pulp, and a powdery or granular super-absorbent polymer. These raw materials are pneumatically conveyed to a molding die provided on the peripheral surface of a suction drum, sucked into the molding die, and stacked for molding. The absorbent body is produced by sandwiching or wrapping the molded article with a water-absorbent paper or a nonwoven fabric, not shown.

In the boundary region between the front portion F and the middle portion M, a left 1 st cut portion 8 and a right 1 st cut portion 9 are formed, which extend inward in the width direction from the left and right side edges of the absorbent body 2. In the boundary region between the middle portion M and the rear portion B, a left 2 nd cut portion 10 and a right 2 nd cut portion 11 extending inward in the width direction from the left and right side edges of the absorbent body 2 are formed. The distance between the left and right 1 st cuts 8 and 9 is greater than the distance between the left and right 2 nd cuts 10 and 11, but the distances are not limited to this, and may be equal to or smaller than each other.

The maximum width in the left-right direction of the absorbent body 2 at the central portion M is larger than the maximum width in the left-right direction of the absorbent body 2 at the front portion F, but is not limited thereto, and may be equal to or smaller than. The maximum width in the left-right direction of the absorbent body 2 at the central portion M is equal to the maximum width in the left-right direction of the absorbent body 2 at the rear portion B, but is not limited thereto, and may be smaller or larger. The absorbent body 2 at the central portion M may be formed in various suitable sizes and shapes so as to be able to form the left and right thigh absorbent bodies 6, 7 that are used by bending oppositely along the inner thighs of the wearer's crotch, and to sufficiently absorb and hold urine discharged in a state where the wearer of the adult diaper 1 lies on his side.

As shown in fig. 2 or 3, the laminate 3 includes: the topsheet 12, the backsheet 13, the left gusset 14, the right gusset 15, and the liquid-impermeable sheets 16a, 16b, 16 c. In fig. 2, the liquid-impermeable sheets 16a, 16b, 16c are omitted. The sheets constituting the laminate sheet 3 have the same length in the front-rear direction and are longer than the absorbent body 2 in the front-rear direction.

The topsheet 12 is rectangular. The topsheet 12 is configured to: the central portion of the absorbent body 2 excluding the left and right side portions is covered on the upper surface of the absorbent body 2, i.e., the wearer-facing surface. The width of the top sheet 12 in the left-right direction is smaller than the respective maximum widths of the absorbent body 2 at the front portion F, the middle portion M, and the rear portion B. The top sheet 2 covers the inner depth portions of the left and right 1 st cut portions 8, 9 and the inner depth portions of the left and right 2 nd cut portions 10, 11. The top sheet 12 has liquid permeability and can allow liquid such as urine to pass through the top sheet 12 and move into the absorbent body 2.

The back sheet 13 is an outer sheet of the diaper 1. The backsheet 13 is configured to: the entire absorbent body 2 is covered under the lower surface of the absorbent body 2, i.e., the surface opposite to the wearer's opposite surface. In any of the front portion F, the middle portion M, and the back portion B, the width of the backsheet 13 in the left-right direction is larger than the width of the absorbent body 2 in the left-right direction. A liquid-impermeable sheet 16a having substantially the same shape as the back sheet 13 is disposed between the back sheet 13 and the absorbent body 2, and is joined by an adhesive or the like. The backsheet 13 and the liquid-impermeable sheet 16a prevent liquid that has passed through the topsheet 3 and liquid that has not been absorbed or held by the absorbent body 2 from leaking to the outside. When the liquid impermeable sheet 16a is present, the back sheet 13 may not be used for preventing leakage. When the back sheet 13 made of nonwoven fabric covers the outside of the liquid-impermeable sheet 16a made of polyethylene, polyester film or the like, the diaper 1 is less likely to be displaced when used as a diaper or underwear for external use, and the skin feel is improved.

The left gather sheet 14 is configured to: the left side portion of the absorbent body 2 is covered on the upper surface of the absorbent body 2, i.e., the wearer-facing surface. The left side edge of the left gusset 14 has substantially the same contour as the left side edge of the backsheet 13. The right side portion of the left gather sheet 14 has a folded portion 14a toward the top sheet 12 with its right side edge as a fold line.

A liquid impermeable sheet 16b is disposed between the left side portion of the left gather sheet 14 and the left side portion of the absorbent body 2, and is joined by an adhesive or the like. The left side edge of the liquid-impermeable sheet 16b has substantially the same contour as the left side edge of the back sheet 13.

Elastic bodies 17a, 17b, and 17c extending in the front-rear direction are provided in parallel in order from the folding line between the left gather sheet 14 and the folded portion 14a thereof, except for the front-rear direction end portions. The left gather sheet 14 including the folded portion 14a is fixed to another sheet of the laminated sheet 3 at the left side portion and both end portions in the front-rear direction by an adhesive or the like. The contraction of the elastic members 17a, 17b, and 17c forms wrinkles in the left gather sheet 14, and the right side portion of the left gather sheet 14 rises from the upper surface of the top sheet 12. In this way, the left standing gather portion 4 extending in the longitudinal direction is formed on the wearer-facing surface 3a of the laminate sheet 3, i.e., the upper surface of the top sheet 12.

The right gather sheet 15 is configured such that: the right side portion of the absorbent body 2 is covered on the upper surface of the absorbent body 2, i.e., the wearer-facing surface. The right side edge of the right gather sheet 15 has substantially the same contour as the right side edge of the backsheet 13. The left side portion of the right gather sheet 15 has a folded portion 15a toward the top sheet 12 with the left side edge thereof as a fold line.

A liquid-impermeable sheet 16c is disposed between the right side portion of the right gather sheet 15 and the right side portion of the absorbent body 2, and is joined by an adhesive or the like. The right side edge of the liquid-impermeable sheet 16c has substantially the same contour as the right side edge of the chassis 13.

Elastic bodies 17d, 17e, and 17f extending in the front-rear direction are provided in parallel in order from the folding line between the right gather sheet 15 and the folded portion 15a thereof, except for both ends in the front-rear direction. The right gather sheet 15 including the folded portion 15a is fixed to another sheet of the laminated sheet 3 at the right side portion and both end portions in the front-rear direction by an adhesive or the like. The right gather sheet 15 is wrinkled by contraction of the elastic bodies 17d, 17e, and 17f, and the left side portion of the right gather sheet 15 rises from the upper surface of the top sheet 12. In this way, right erected gather portion 5 extending in the longitudinal direction is formed on the wearer-facing surface 3a of the laminate sheet 3, i.e., the upper surface of the top sheet 12.

The raw materials of the top sheet 12 may be, for example: chemical fibers such as polyethylene, polypropylene, polyester, nylon, rayon, and the like; natural fibers such as cotton and cellulose; or a combination thereof. The top sheet 12 is not limited to nonwoven fabrics, and may be formed into a liquid-permeable apertured film, tissue paper, or a laminate thereof, or may be formed into a sheet by appropriately joining them.

The back sheet 13, the left gather sheet 14 and the right gather sheet 15 are liquid-impermeable or water-repellent, and are made of, for example, chemical fibers such as polyethylene, polypropylene, polyester, nylon, rayon, and the like; natural fibers such as cotton and cellulose; or a combination thereof. The back sheet 13, the left gather sheet 14 and the right gather sheet 15 are not limited to nonwoven fabrics, and may be, for example, resin films, tissue paper, stretchable materials, or laminates thereof, or may be formed into a sheet by appropriately joining them.

The liquid-impermeable sheets 16a, 16b, and 16c are formed of a liquid-impermeable material such as a film of polyethylene, polypropylene, polyester, nylon, or the like, or a coated nonwoven fabric.

The laminate sheet 3 and the sheets constituting the laminate sheet 3 are not limited to the sheets described above, and various sizes, shapes and stacking order can be appropriately adopted so as to enclose the absorbent body 2 and allow the liquid such as urine excreted by the wearer to be absorbed and retained by the absorbent body 2 without leaking to the outside.

The elastic bodies 17a, 17b, 17c, 17d, 17e, and 17f are made of, for example, a stretchable thread-like material such as natural rubber, urethane resin, or stretchable hot melt adhesive. These elastic bodies are not limited to a string shape, and may be a band shape or a sheet shape.

In the boundary region between the front portion F and the middle portion M, a left 3 rd cut 18 extending inward in the width direction of the laminated sheet 3 is formed from the left 1 st cut 8 toward the left side edge of the laminated sheet 3, and a right 3 rd cut 19 extending inward in the width direction of the laminated sheet 3 is formed from the right 1 st cut 9 toward the right side edge of the laminated sheet 3.

In the boundary region between the middle portion M and the rear portion B, a left 4 th cut portion 20 extending inward in the width direction of the laminate sheet 3 is formed from the left side edge of the laminate sheet 3 toward the left 2 nd cut portion 10, and a right 4 th cut portion 21 extending inward in the width direction of the laminate sheet 3 is formed from the right side edge of the laminate sheet 3 toward the right 2 nd cut portion 11. The distance between the left and right 3 rd notches 18 and 19 is smaller than the distance between the left and right 4 th notches 20 and 21, but the distances are not limited to this, and may be equal to or larger than each other.

The maximum width in the left-right direction of the laminate sheet 3 at the middle portion M is larger than the maximum width in the left-right direction of the laminate sheet 3 at the front portion F, and is equal to the maximum width in the left-right direction of the laminate sheet 3 at the rear portion B. The maximum width in the left-right direction of the laminate sheet 3 at the front portion F is larger than the maximum width in the left-right direction of the absorbent body 2 at the central portion M.

The left side portion of the absorbent body 2 located in the middle portion M is located between the left 1 st cut portion 8 and the left 2 nd cut portion 10, and forms a left thigh absorbent body 6 which is used by bending oppositely along the inner thigh of the wearer's crotch. The right side portion of the absorbent body 2 positioned in the middle portion M is positioned between the right 1 st cut portion 9 and the right 2 nd cut portion 11, and forms a right thigh absorbent body 7 which is used by bending oppositely along the inner thigh of the wearer's crotch. The left and right thigh absorbent bodies 6, 7 protrude greatly to the left and right sides of the absorbent body 2 at the middle portion M.

The left and right thigh absorbent bodies 6, 7 of the absorbent body 2 positioned in the middle portion M are positioned between the 1 st cut portions 8, 9 and the 2 nd cut portions 10, 11, and therefore can be bent at the root portions of the thigh absorbent bodies 6, 7. Further, since the laminate sheet 3 positioned around the thigh absorbent bodies 6 and 7 has the 3 rd incisions 18 and 19 and the 4 th incisions 20 and 21, the thigh absorbent bodies 6 and 7 of the absorbent body 2 can be used while being bent to face each other along the inner thighs of the wearer's crotch. The shape and size of the 3 rd incisions 18 and 19 and the 4 th incisions 20 and 21 formed in the laminate sheet 3 are not limited to those shown in fig. 2, and various shapes and sizes may be appropriately adopted so that the thigh absorbent bodies 6 and 7 are used while being bent so as to face each other along the inner thigh of the crotch of the wearer.

In the case where the thigh absorbent body of the absorbent body can be used by bending it so as to face the inner thigh of the crotch of the wearer without the 4 th cut, the 4 th cut may not be present.

As shown in fig. 1, the diaper 1 may be configured such that: the thigh absorbent bodies 6, 7 largely protruding to the left and right sides of the absorbent body 2 positioned in the middle portion M are curved to face each other along the inner thigh of the wearer's crotch. Therefore, the front portion F, the middle portion M, and the rear portion B of the diaper 1 can be disposed close to or in close contact with the lower abdomen, the crotch, and the buttocks of the wearer, respectively, and therefore the fit of the diaper 1 to the wearer is high and the leakage prevention capability is also high. Further, even when the wearer of the diaper 1 lies on his or her side, the leakage prevention ability is high because the thigh absorbent bodies 6 and 7 for absorbing and holding excreted urine and the like are large. Even if the fit of the diaper 1 to the wearer is high, the left and right standing gather portions 4 and 5 may stand up on the top sheet 12 to a position where they can function as a three-dimensional leakage preventing structure.

As shown in fig. 2 or 3, elastic bodies 22a and 22b are provided at the root of the left thigh absorbent body 6, that is, in a region of the absorbent body 2 connecting the inward deep portion of the left 1 st cut portion 8 and the inward deep portion of the left 2 nd cut portion 10. Elastic bodies 22c and 22d are provided at the root of the right thigh absorbent body 7, that is, in a region of the absorbent body 2 that connects the inward deep portion of the right 1 st cut 9 and the inward deep portion of the right 2 nd cut 11. The elastic bodies 22a, 22b, 22c, 22d are located under the absorbent body 2 and fixed to the back sheet 13 with an adhesive or the like.

The elastic bodies 22a, 22b, 22c, and 22d are made of, for example, a stretchable thread-like material such as natural rubber, urethane resin, or stretchable hot melt adhesive. These elastic bodies are not limited to the string-like ones, and may be band-like or sheet-like ones.

The elastic bodies 22a, 22b, 22c, 22d are one type of guide portions for bending the left and right side portions of the absorbent body 2 positioned at the central portion M so that the thigh absorbent bodies 6, 7 face each other along the inner thigh of the wearer's crotch. The elastic members 22a, 22b, 22c, and 22d provided at the base portions of the thigh absorbent members 6 and 7 contract, whereby the thigh absorbent members 6 and 7 are easily bent at the base portions and the peripheral portions thereof, and easily face each other along the inner thighs of the crotch of the wearer.

The guide portion prevents the left and right side portions of the absorbent body 2 positioned in the middle portion M from being bent in an undesired direction or position, such as being bent obliquely or being bent at a position asymmetrical to the left and right. This also improves the leak resistance. The positions where the guide portions are provided are: when the diaper is worn, the diaper may be positioned so as to extend in the front-rear direction between the crotch portion and the thighs of the wearer. Preferably, 1 or more guide portions are provided on the left and right sides, respectively. By providing a plurality of guide portions, the diaper can be more reliably maintained in the correct position for the wearer. This is because: the angle and position at which the absorbent body 2 and the thigh absorbent bodies 6 and 7 positioned in the middle portion M are folded vary from the crotch portion to the thighs depending on the movement, body shape, or posture of the wearer.

Since the diaper 1 has the relatively large thigh absorbers 6, 7 on the left and right sides of the central portion M, the width of the absorber 2 positioned between the left and right thigh absorbers 6, 7 of the central portion M can be reduced, and the fit to the crotch of the wearer can be improved. For example, in the conventional diaper 101 shown in fig. 6, the width of the central portion of the absorber 102 disposed opposite the crotch portion of the wearer is generally 100mm in the small size of an adult, 130mm in the middle size, and 160mm in the large size. In contrast, in the diaper 1, the width of the central portion of the absorbent body 2 disposed to face the crotch portion of the wearer is 80mm in the small size of an adult, 100mm in the middle size, and 120mm in the large size. In this way, the diaper 1 having the large leg absorbers 6, 7 on the left and right sides can improve the fit to the crotch of the wearer by narrowing the width of the central portion of the absorber 2 disposed opposite the crotch of the wearer by about 20mm to 40mm as compared with the conventional diaper 101.

As shown in fig. 2 and 3, the diaper 1 has left and right concave grooves 23, 24 extending in the front-rear direction formed in the vicinity of the inner edges of the left and right gather sheets 14, 15 projected at the widthwise central portion of the absorbent body 2. The left and right grooves 23, 24 are one of the guides for bending the thigh absorbent body 6. Since the absorbent member 2 is easily bent at the positions of the grooves 23 and 24 located more on the center side than the base portions of the thigh absorbent members 6 and 7, the fit to the crotch of the wearer can be further improved in the diaper 1, and the thigh absorbent members 6 and 7 can be opposed to each other along the inner thighs of the crotch of the wearer to further improve the fit.

Liquid impermeable sheets 16b and 16c are disposed between the wearer facing surfaces of the left and right thigh absorbent bodies 6 and 7 and the left and right gather sheets 14 and 15, respectively. A liquid-impermeable sheet 16a is disposed between the back sheet 13 and the surface opposite to the wearer-facing surface of the left and right thigh absorbent bodies 6, 7. As shown in fig. 3, since the leakage preventing structure is provided to cover both the wearer facing surface and the opposite surface thereof from the tip to the base of the thigh absorbent bodies 6, 7, the liquid such as urine absorbed by the thigh absorbent bodies 6, 7 can be prevented from leaking to the outside in any of standing, sitting, lying on the back, lying on the stomach, or lying on the side of the wearer of the diaper 1.

A comparative experiment of the absorption capacity was performed on the diaper 101 of the conventional example having the shape and structure shown in fig. 6 and the diaper 1 of the embodiment 1 of the present invention having the shape and structure of the diaper 1 shown in fig. 2. The common points of example 1 and the conventional example are that the longitudinal length of the laminate sheet is 560mm, the maximum width is 260mm, the longitudinal length of the absorbent body is 515mm, and the maximum width is 210 mm. The absorbent body 2 of example 1 contained 34.4g of total pulp, 12.1g of total SAP, and 0.099m of area of the wearer-facing surface of the absorbent body 2². The absorbent body 102 of the conventional example contained 32.0g of total pulp, 11.0g of total SAP, and 0.092m of the area of the wearer-facing surface of the absorbent body 102². As described above, the total pulp amount, the total SAP amount, and the area of the wearer-facing surface of the absorbent body 2 of example 1 are equal to or less than 1.1 times of those of the absorbent body 102 of the conventional example. The thicknesses of the absorbers of example 1 and the conventional example were also equal.

A comparative experiment of the absorption capacity was performed for example 1 and the conventional example, in the case where the wearer lies on his back and the case where the wearer lies on his side. Specifically, each diaper was attached to a doll having an adult standard body shape, and artificial urine was injected at 15 ml/sec until the artificial urine exceeded the standing gather portion and leaked. The weight of the diaper before absorption was subtracted from the weight of the diaper after absorption to determine the absorption amount. The experiments were conducted 5 times each, and the average absorption amounts of example 1 and the conventional example were obtained and compared.

From the results of the above experiments, the average absorption amount in the case where the wearer lies on his back was 797g in example 1, which is 1.4 times or more larger than 561g of the conventional product. In addition, the average absorption amount in the case where the wearer lies on his side in example 1 was 542g, which is 1.3 times larger than 424g of the conventional product. In this way, in the diaper 1 of the present invention, the large thigh absorbers 6, 7 positioned on the left and right sides of the central portion M are curved and arranged to face each other along the inner thighs of the crotch of the wearer, and therefore, it is confirmed that leakage of urine or the like can be effectively prevented both when the wearer lies on the back and when the wearer lies on the side.

Next, fig. 4 and 5 show a disposable adult diaper 30 as another embodiment of the present invention. Among the elements of the diaper 30, the same elements as those of the diaper 1 are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

As shown in fig. 4 and 5, the diaper 30 does not have the grooves 23 and 24 in the widthwise central portion of the absorbent body 2. The laminate 31 of the diaper 30 comprises: a top sheet 32, a back sheet 33, and a liquid-impermeable sheet 34. In fig. 4, the liquid-impermeable sheet 14 is omitted. The topsheet 32 is the same as the topsheet 12 of the diaper 1. The back sheet 33 has a structure in which the back sheet 13, the left gather sheet 14, and the right gather sheet 15 of the diaper 1 are continuous and integrated, and functions thereof. The liquid-impermeable sheet 34 has a structure in which the liquid-impermeable sheets 16a, 16b, and 16c of the diaper 1 are connected and integrated, and functions thereof. Since the back sheet 33 and the liquid-impermeable sheet 34 of the diaper 30 have the integral structure as described above, the number of steps for bonding the sheets is small.

As shown in fig. 4, the respective maximum widths in the left-right direction at the front portion F, the middle portion M, and the rear portion B of the laminate 31 of the diaper 30 are equal to each other and are slightly larger than the maximum width in the left-right direction of the absorbent body 2. The left and right side edges of the laminate sheet 31 extend in parallel in the front-rear direction at a position slightly outside the maximum width of the absorbent body 2 in the left-right direction. In the boundary region between the front portion F and the middle portion M, left and right 1 st incisions 8 and 9 are formed in the absorbent body 2, and left and right 3 rd incisions 18 and 19 are formed in the laminate sheet 31. In the boundary region between the middle portion M and the back portion B, left and right 2 nd cuts 10, 11 are formed in the absorbent body 2, and left and right 4 th cuts 20, 21 are formed in the laminate sheet 31. Since the maximum width of the laminate sheet 31 in the left-right direction is slightly wider than the maximum width of the absorbent body 2 in the left-right direction, the diaper 30 can be made narrower in the left-right direction, and the number of materials for the laminate sheet 3 can be reduced.

The present invention is not limited to the above embodiments. The scope of the present invention includes at least modifications derived from the above-described embodiments and modifications that do not alter the essence of the present invention.

Industrial applicability

The disposable adult diaper of the present invention can be used alone as a diaper, and can be used as a urine receiving pad, an incontinence pad, or the like by being attached to the inner surface of a disposable diaper or a wearing article. The disposable adult diaper of the present invention is particularly suitable for a wearer who is frequently bedridden.

Description of the reference numerals

1. 30: a disposable diaper for adults which,

2: an absorbent body having a plurality of absorbent layers,

3. 31: the laminate sheet is laminated to a substrate,

3 a: the wearer-facing side of the laminate sheet,

4. 5: an erected gather portion which is formed by folding a plurality of folded portions,

6. 7: an absorbent body for the thigh section,

8. 9: the first cut-in part 1 is formed,

10. 11: the number 2 of the incised part,

12. 32: a top sheet having a first surface and a second surface,

13. 33: a negative film is arranged on the bottom plate,

14. 15: the side of the pleated sheet is provided with a pleat sheet,

16a, 16b, 16c, 34: a liquid-impermeable sheet having a high permeability and a low water resistance,

17a, 17b, 17c, 17d, 17e, 17 f: an elastic body is arranged on the upper surface of the shell,

18. 19: the 3 rd cut-in part is formed,

20. 21: the 4 th cut-in part was cut,

22a, 22b, 22c, 22 d: an elastic body is arranged on the upper surface of the shell,

23. 24: the grooves are arranged in the groove, and the grooves,

f: the front part of the frame is provided with a front part,

m: the middle part of the utility model is provided with a plurality of grooves,

b: a rear portion.