阅读说明：本技术 吸收性物品 (Absorbent article ) 是由 丸山贵史 曽我部瑶介 石川青 黑田贤一郎 野田祐树 于 2018-12-12 设计创作，主要内容包括：提供一种能够维持将吸收性物品紧凑地卷成卷的状态并利用后处理用的带构件清洁地废弃的吸收性物品。吸收性物品(10)具有主体部(20)和后处理用的带构件(60)。主体部具有：第1区域(R1),其相对于主体部的前后方向上的中心位于前后方向上的一侧；以及第2区域(R2),其相对于主体部的前后方向上的中心位于前后方向上的另一侧。在第1区域和第2区域分别设有多个成为将主体部沿前后方向弯折的基点的弯折基点部(80)。带构件固定于第1区域。第2区域的弯折基点部的平均间隔比第1区域的弯折基点部的平均间隔短。(Provided is an absorbent article which can be cleanly discarded by a belt member for post-treatment while maintaining a state in which the absorbent article is compactly wound into a roll. The absorbent article (10) has a main body (20) and a belt member (60) for post-treatment. The main body part has: a 1 st region (R1) located on one side in the front-rear direction with respect to the center in the front-rear direction of the main body portion; and a 2 nd region (R2) located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion. A plurality of bending base point portions (80) serving as base points for bending the main body portion in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively. The strap member is fixed to zone 1. The average interval of the base bending points in the 2 nd region is shorter than the average interval of the base bending points in the 1 st region.)

1. An absorbent article having:

a front-back direction;

a width direction orthogonal to the front-rear direction;

a main body part having a front sheet, a back sheet and an absorbent core; and

a belt member for post-treatment of a belt material,

the main body portion has: a 1 st region located on one side in the front-rear direction with respect to a center in the front-rear direction of the main body portion; and a 2 nd region located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion, wherein,

a plurality of bending base point portions serving as base points for bending the main body portion in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively,

the strap member is secured to the 1 st zone,

the average interval of the bending base point portions in the 2 nd region is shorter than the average interval of the bending base point portions in the 1 st region.

2. The absorbent article of claim 1,

the number of the bending base point portions in the 2 nd region is larger than the number of the bending base point portions in the 1 st region.

3. An absorbent article having:

a front-back direction;

a width direction orthogonal to the front-rear direction;

a main body part having a front sheet, a back sheet and an absorbent core; and

a belt member for post-treatment of a belt material,

the main body portion has: a 1 st region located on one side in the front-rear direction with respect to a center in the front-rear direction of the main body portion; and a 2 nd region located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion, wherein,

a plurality of bending base point portions serving as base points for bending the absorbent article in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively,

the strap member is secured to the 1 st zone,

the average interval of the bending base point portions in the 1 st region is shorter than the average interval of the bending base point portions in the 2 nd region.

4. The absorbent article according to claim 3,

the number of the bending base point portions in the 1 st region is larger than the number of the bending base point portions in the 2 nd region.

5. The absorbent article according to any one of claims 1 to 4, wherein,

the 1 st region is located on the rear side with respect to the center in the front-rear direction.

6. The absorbent article according to any one of claims 1 to 5, wherein,

the maximum length in the width direction of the 1 st region is longer than the maximum length in the width direction of the 2 nd region.

7. The absorbent article according to any one of claims 1 to 6, wherein,

the bending base point portion includes a compressed portion that is formed by compressing at least the absorbent core in the thickness direction.

8. The absorbent article of claim 7,

the compressed portion is recessed from the skin-facing surface side toward the non-skin-facing surface side.

9. The absorbent article according to any one of claims 1 to 8, wherein,

the base bending point portion includes a weight-per-unit-area change portion whose weight-per-unit-area of the absorbent material of the absorbent core is different from that of an adjacent region in the front-rear direction.

10. The absorbent article of claim 9,

the unit area weight change portion is a low unit area weight portion having a lower unit area weight than regions adjacent in the front-rear direction,

the low unit area weight portion is provided along the width direction,

in a cross-sectional view taken along the front-rear direction, a length in the front-rear direction of the skin-facing surface of the low basis weight portion is longer than a length in the front-rear direction of the non-skin-facing surface of the low basis weight portion.

11. The absorbent article according to any one of claims 1 to 10, wherein,

the bending base point portion includes a fold line folded so that the skin-facing surface of the absorbent article faces each other.

12. The absorbent article according to any one of claims 1 to 11, wherein,

the bending base point portion extends in the width direction.

13. The absorbent article according to any one of claims 1 to 12, wherein,

the bending base point portion includes: a 1 st bending base point portion having a length in the width direction longer than a length in the front-rear direction; and a 2 nd base bending portion, the 2 nd base bending portion having a length in the front-rear direction longer than a length in the width direction,

the number of the 1 st bending base point portions is larger than the number of the 2 nd bending base point portions.

14. The absorbent article according to any one of claims 1 to 13, wherein,

the bending base point portions are provided in a range from an outer end edge in the front-rear direction in the 1 st region of the main body portion to 1/3 of the length in the front-rear direction of the main body portion.

Technical Field

The present invention relates to an absorbent article provided with a belt member for post-treatment.

Background

Patent document 1 discloses an absorbent article provided with a belt member for post-treatment. When disposing of such an absorbent article having a belt member for post-treatment, a user winds the absorbent article around one end in the front-rear direction of the absorbent article in the front-rear direction as a center, and fixes the other end in the front-rear direction of the absorbent article in the wound state by the belt member.

Disclosure of Invention

Problems to be solved by the invention

However, the absorbent article at the time of disposal absorbs body fluid and is thicker than it is before use. Therefore, when the absorbent article is rolled in the front-rear direction, it is sometimes difficult to compactly roll the absorbent article. Therefore, the absorbent article may not be fixed in a rolled state using the belt member.

Therefore, an absorbent article that can be cleanly discarded by a belt member for post-treatment while maintaining a state in which the absorbent article is compactly wound into a roll is desired.

Means for solving the problems

An absorbent article according to one aspect includes: a front-back direction; a width direction orthogonal to the front-rear direction; a main body part having a front sheet, a back sheet and an absorbent core; and a belt member for post-treatment, the main body portion having: a 1 st region located on one side in the front-rear direction with respect to a center in the front-rear direction of the main body portion; and a 2 nd region located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion, wherein a plurality of bending base point portions serving as base points for bending the main body portion in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively, the belt member is fixed to the 1 st region, and an average interval of the bending base point portions in the 2 nd region is shorter than an average interval of the bending base point portions in the 1 st region.

An absorbent article according to another aspect includes: a front-back direction; a width direction orthogonal to the front-rear direction; a main body part having a front sheet, a back sheet and an absorbent core; and a belt member for post-treatment, the main body portion having: a 1 st region located on one side in the front-rear direction with respect to a center in the front-rear direction of the main body portion; and a 2 nd region located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion, wherein a plurality of bending base point portions serving as base points for bending the main body portion in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively, the belt member is fixed to the 1 st region, and an average interval of the bending base point portions in the 1 st region is shorter than an average interval of the bending base point portions in the 2 nd region.

Drawings

Fig. 1 is a plan view of the absorbent article according to embodiment 1, as viewed from the skin-facing surface side.

Fig. 2 is a plan view of the absorbent article of the embodiment, as seen from the non-skin-facing surface side of the absorbent article of embodiment 1.

Fig. 3 is a sectional view of the absorbent article of embodiment 1 taken along the line a-a shown in fig. 1.

Fig. 4 is a perspective view of the absorbent article according to embodiment 1 in a state of being rolled up in the front-rear direction.

Fig. 5 is a plan view of the absorbent article of modification 1, as viewed from the skin-facing surface side.

Fig. 6 is a plan view of the absorbent article according to embodiment 2, as viewed from the skin-facing surface side.

Fig. 7 is a sectional view of the absorbent article of embodiment 2 taken along the line B-B shown in fig. 6.

Fig. 8 is a plan view of the absorbent article of modification 2, as viewed from the skin-facing surface side.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be apparent from the description of the present specification and the accompanying drawings.

An absorbent article according to one aspect includes: a front-back direction; a width direction orthogonal to the front-rear direction; a main body part having a front sheet, a back sheet and an absorbent core; and a belt member for post-treatment, the main body portion having: a 1 st region located on one side in the front-rear direction with respect to a center in the front-rear direction of the main body portion; and a 2 nd region located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion, wherein a plurality of bending base point portions serving as base points for bending the main body portion in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively, the belt member is fixed to the 1 st region, and an average interval of the bending base point portions in the 2 nd region is shorter than an average interval of the bending base point portions in the 1 st region.

When the user discards the absorbent article, the absorbent article is wound into a roll from the 2 nd region side, and the absorbent article in the wound state is fixed by the belt member. In this case, the average interval of the bending base point portions of the 2 nd region located inside in the rolled state is short, and therefore the roll can be compactly rolled. Further, since the plurality of bending base point portions are provided also in the 1 st region located on the outer side in the rolled state, both the 1 st region and the 2 nd region can be easily rolled, and the rolled state can be easily maintained. This makes it possible to cleanly discard the absorbent article with the belt member for post-treatment while maintaining a state in which the absorbent article is compactly wound into a roll.

According to a preferable mode, the number of the bending base point portions in the 2 nd region is larger than the number of the bending base point portions in the 1 st region.

In the absorbent article according to one aspect, since the number of bending base point portions is large in the 2 nd region located on the inner side in the rolled state, a large number of deformation base points are formed on the inner side in the rolled state, and the roll can be more easily rolled compactly.

An absorbent article according to another aspect includes: a front-back direction; a width direction orthogonal to the front-rear direction; a main body part having a front sheet, a back sheet and an absorbent core; and a belt member for post-treatment, the main body portion having: a 1 st region located on one side in the front-rear direction with respect to a center in the front-rear direction of the main body portion; and a 2 nd region located on the other side in the front-rear direction with respect to the center in the front-rear direction of the main body portion, wherein a plurality of bending base point portions serving as base points for bending the main body portion in the front-rear direction are provided in the 1 st region and the 2 nd region, respectively, the belt member is fixed to the 1 st region, and an average interval of the bending base point portions in the 1 st region is shorter than an average interval of the bending base point portions in the 2 nd region.

When the user discards the absorbent article, the absorbent article is wound into a roll from the 2 nd region side, and the absorbent article in the wound state is fixed by the belt member. At this time, the 1 st region located on the outer side when wound into a roll is wound along the portion located on the inner side in the wound state. Since the average interval of the bending base point portions of the 1 st region is short, the 1 st region located outside in a wound state can be bent at a short interval. Thus, even if the 2 nd region is rolled up to form the irregularities on the outer surface, the 1 st region can be easily rolled up to a circular shape. Further, since the plurality of bending base points are provided also in the 2 nd region located inside in the wound state, both the 1 st region and the 2 nd region can be compactly wound into a roll by the bending base points, and the wound state can be easily maintained. This allows the absorbent article to be discarded cleanly with the belt member for post-treatment while maintaining the state of being wound into a roll.

According to a preferable mode, the number of the bending base point portions in the 1 st region is larger than the number of the bending base point portions in the 2 nd region.

In the absorbent article according to the other aspect, since the number of bending base point portions is large in the 1 st region located on the outer side in the rolled state, a large number of deformation base points are formed on the outer side in the rolled state, and the rolled state is more easily maintained.

According to a preferable mode, the 1 st region is located on the rear side with respect to the center in the front-rear direction.

When a user rolls an absorbent article into a roll, the user usually starts rolling the absorbent article in the front-rear direction from the front end edge or the rear end edge of the absorbent article. Wherein about eight users start the roll from the front end edge of the absorbent article. Thus, the belt member is preferably provided in a region located on the rear side with respect to the center in the front-rear direction.

According to a preferable mode, the maximum length of the 1 st region in the width direction is longer than the maximum length of the 2 nd region in the width direction.

Since the maximum length in the width direction of the 1 st region located on the outer side in the rolled state is long, the 2 nd region located on the inner side can be covered with the 1 st region located on the outer side in the rolled state, and the rolled state can be maintained more easily.

According to a preferred embodiment, the bending base point portions include compressed portions that are formed by compressing at least the absorbent core in the thickness direction.

The compressed portion has higher rigidity and a thinner thickness than a region where the compressed portion is not formed. The compression portion constitutes the bending base point portion, and the absorbent article can be easily rolled up compactly into a roll by utilizing the difference in thickness and the difference in rigidity.

According to a preferred embodiment, the compressed portion is recessed from the skin-facing surface side toward the non-skin-facing surface side.

The user usually rolls the absorbent article into a roll with the skin-facing surface side to which excreta adheres as the inside at the time of disposal. Since the compressed portion is recessed from the skin-facing surface side toward the non-skin-facing surface side, the compressed portion is easily deformed so as to approach the skin-facing surface side, and the absorbent article is easily rolled with the skin-facing surface side as the inner side.

According to a preferred aspect, the base bending point portion includes a weight-per-unit-area changing portion whose weight-per-unit-area of the absorbent material of the absorbent core is different from that of the adjacent region in the front-rear direction.

The weight per unit area changing portion has a different weight per unit area of the absorbent material and a different thickness and rigidity of the absorbent core than those of the regions adjacent in the front-rear direction. By forming the bending base point portion by the weight change portion per unit area, the absorbent article can be easily rolled up compactly by the difference in thickness and the difference in rigidity.

According to a preferred aspect, the unit area weight change portion is a low unit area weight portion having a lower unit area weight than regions adjacent in the front-rear direction,

the low unit area weight portion is provided along the width direction,

in a cross-sectional view taken along the front-rear direction, a length in the front-rear direction of the skin-facing surface of the low basis weight portion is longer than a length in the front-rear direction of the non-skin-facing surface of the low basis weight portion.

The user usually rolls the absorbent article into a roll with the skin-facing surface side to which excreta adheres as the inside at the time of disposal. Since the length of the skin-facing surface of the low basis weight portion in the front-rear direction is longer than the length of the non-skin-facing surface of the low basis weight portion in the front-rear direction, the absorbent article is easily deformed so as to approach the skin-facing surface side, and is easily rolled with the skin-facing surface side as the inside.

According to a preferred embodiment, the bending base point portion includes a fold line folded so that the skin-facing surface of the absorbent article faces each other.

The tendency of the fold lines to bend is likely to deform so as to bring the skin-facing surface side closer together, and the absorbent article is likely to be rolled with the skin-facing surface side as the inside.

According to a preferred embodiment, the bending base point portion extends in the width direction.

The deformation base point when the absorbent article is rolled up extends in the width direction, so that it is easy to roll up the entire width-direction area of the absorbent article in the front-rear direction.

According to a preferred embodiment, the bending base point portion includes: a 1 st bending base point portion having a length in the width direction longer than a length in the front-rear direction; and 2 nd base bending point portions, the length of the 2 nd base bending point portions in the front-back direction being longer than the length of the base bending point portions in the width direction, the number of the 1 st base bending point portions being larger than the number of the 2 nd base bending point portions.

Since the number of the 1 st base point of bending portions is larger than the number of the 2 nd base point of bending portions, when the absorbent article is rolled, it is easier to roll the absorbent article in the front-rear direction than in the width direction. This makes it easier to compactly wind the absorbent article in the front-rear direction into a roll, and also makes it easier to maintain the rolled state.

According to a preferable mode, the bending base point portions are provided in three or more ranges from an outer end edge in the front-rear direction in the 1 st region of the main body portion to 1/3 of the length in the front-rear direction of the main body portion.

The circumference of the main body portion in a state of being rolled in the front-rear direction is generally about 1/3 with respect to the length of the main body portion in the front-rear direction. 1/3 corresponding to the length of the main body in the front-rear direction is a portion of the surface located on the outer side in the rolled state. By providing three or more bending base point portions in this portion, the rolled state can be maintained more easily.

(2) Structure of absorbent article

Hereinafter, an absorbent article according to embodiment 1 will be described with reference to the drawings. The absorbent article may be an absorbent article such as a sanitary napkin, panty liner, breast pad, adult incontinence pad, fecal pad or sweat pad. The absorbent article may be used by being attached to the inside of a wearing article such as underwear.

In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and it should be noted that the scale of each dimension and the like may be different from the actual scale and the like. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other.

Fig. 1 is a plan view of an absorbent article 10 according to embodiment 1, as viewed from the skin-facing surface side. Fig. 2 is a plan view of the absorbent article 10 according to embodiment 1, viewed from the non-skin-facing surface side. Here, the "skin-facing surface side" corresponds to a side facing the skin of the wearer during use. The "non-skin-facing side" corresponds to the side opposite to the skin of the wearer during use. Fig. 3 is a cross-sectional view taken along line a-a shown in fig. 1, and fig. 4 is a perspective view of the absorbent article in a rolled state in the front-rear direction.

The absorbent article 10 has a front-rear direction L and a width direction W. The front-back direction L is a direction extending from the front side (ventral side) to the back side (dorsal side) of the wearer or a direction extending from the back side to the front side of the wearer. The width direction W is a direction orthogonal to the front-rear direction L.

The absorbent article 10 has a main body 20 and a belt member 60 for post-treatment. The main body portion 20 includes a front surface sheet 21 facing the skin of the wearer, a back surface sheet 22 facing the opposite side of the skin of the wearer, and an absorbent core 23 disposed between the front surface sheet 21 and the back surface sheet 22. The top sheet 21 faces the skin of the wearer during use. The back sheet 22 faces the side opposite to the wearer's skin during use. The absorbent core 23 extends in the front-rear direction L of the absorbent article.

The main body portion 20 may have: a 1 st region R1 located on one side in the front-rear direction L with respect to the center 20CL in the front-rear direction L of the main body portion 20; and a 2 nd region R2 located on the other side in the front-rear direction L with respect to the center 20CL in the front-rear direction L of the main body portion 20. The 1 st region R1 is a region to which the belt member 60 is fixed, and the 2 nd region R2 is a region to which the belt member 60 is not fixed. The 1 st region R1 of the present embodiment is located rearward with respect to the center 20CL in the front-rear direction L of the main body portion 20, and the 2 nd region R2 is located forward with respect to the center 20CL in the front-rear direction L of the main body portion 20. The 1 st region R1 is a region between the rear end edge of the body portion 20 and the center 20CL, and the 2 nd region R2 is a region between the front end edge of the body portion 20 and the center 20 CL.

The body portion 20 may have a compression portion 26. The compressed portion 26 may be formed by compressing at least the absorbent core 23 in the thickness direction, or may be formed by compressing the topsheet 21 and the absorbent core 23. The compression portion 26 has a higher density and a higher rigidity than the surroundings. The compressed portion 26 may be recessed from the skin-facing surface side T1 toward the non-skin-facing surface side T2. By compression from the front sheet side to the back sheet side, the compressed portion 26 is formed into a shape recessed from the skin-facing surface side T1 toward the non-skin-facing surface side T2.

The absorbent core 23 may have a low basis weight portion 25 and a high basis weight portion 27 (refer to fig. 5). The low basis weight portion 25 is a region in which the basis weight of the absorbent material is lower than that of the surroundings. Here, the "low basis weight portion" refers to a region having no absorbent core (i.e., a region having a weight per unit area of zero) or a region composed of a portion of the absorbent core having a weight per unit area lower than that of a portion of the absorbent core around the region. The high basis weight portion 27 is a region in which the basis weight of the absorbent material is higher than that of the surroundings. The low basis weight portion 25 and the high basis weight portion 27 constitute a basis weight changing portion described later.

The main body portion 20 may also have hip flaps 50. The hip flaps 50 are portions bulging in the width direction W at positions further to the rear side than the center 20CL in the front-rear direction of the main body portion 20. The hip flaps 50 are portions bulging outward with respect to the outer edge of the absorbent core 23 in the width direction W. The main body 20 may have a wing portion. The main body portion 20 has an excretory opening opposing region S1 that opposes an excretory opening (e.g., vaginal opening) of a wearer during use. The excretory opening opposing region S1 is a region disposed in the crotch of the wearer, i.e., between the legs of the wearer, and corresponds to a region where the absorbent core 23 is present.

As shown in fig. 2, the main body portion 20 may have adhesive portions 52, 70 provided on the non-skin-facing side of the back sheet 22. The adhesive sections 52 and 70 are regions provided with an adhesive for fixing the absorbent article 10 to a wearing article. The adhesive may include a body adhesive 70 and a flap adhesive 52.

The absorbent article 10 can be fixed to a wearing article such as underwear by the adhesive sections 52 and 70 provided on the non-skin-facing surface side of the back sheet 22. After the absorbent article 10 is used, the tape member 60 can be fixed by the adhesive portions 52 and 70 in a state where the absorbent article 10 is rolled up, and the rolled-up state can be maintained. Therefore, the adhesive portions 52 and 70 can be used for both the purpose of fixing to the clothes and the purpose of fixing the belt member for the post-treatment.

The main body bonding portion 70 is provided in a region overlapping the absorbent core 23 in the thickness direction T of the absorbent article 10. Preferably, the main body bonded portion 70 extends continuously or intermittently from at least the excretory opening opposing region S1 toward the rear of the absorbent article 10. The body bonding portion 70 may extend in the front-rear direction L, and a plurality thereof may be provided at intervals in the width direction W. In another mode, the body bonding portion 70 may extend in the width direction W, and a plurality thereof may be provided at intervals in the front-rear direction. The flap adhesive 52 is provided to the hip flap 50.

The absorbent article 10 may also have a fold extending in the width direction W. The fold line may be a fold line that is folded so that the skin-facing surface of the absorbent article faces each other. In the example shown in fig. 1 and 2, the folds of the absorbent article 10 have the 1 st fold F1, the 2 nd fold F2, and the 3 rd fold F3. The 1 st fold F1 is the fold closest to the front end edge E1 of the absorbent article 10. The 2 nd fold F2 is the fold closest to the rear end edge E2 of the absorbent article 10. The 3 rd fold F3 is disposed between the 1 st fold F1 and the 2 nd fold F2. In addition, more than four folds may be provided. The fold line is a line for folding the absorbent article 10 with the skin-facing surface side T1 of the absorbent article as the inside when packaging the absorbent article.

The belt member 60 is fixed to the 1 st region R1 of the main body portion 20. As shown in fig. 3, the band member 60 may have a fixing portion 62 fixed to the main body portion 20. The fixing portion 62 may be provided at one end of the band member 60. The fixing portion 62 may be fixed to the main body portion 20 by an adhesive means such as an adhesive. The fixing portion 62 may be fixed to the back sheet 22 constituting the non-skin-facing surface of the main body portion 20.

In addition, the belt member 60 may have a non-fixing portion 64 that is not fixed to the main body portion 20. The non-securing portion 64 is a portion that is not secured to the back sheet 22 and that allows a user to operate the belt member 60. More specifically, when the user uses the belt member 60, the user pulls the non-fixing portion 64 or folds back the non-fixing portion 64 with the fixing portion 62 as a reference point, and then fixes the non-fixing portion 64 to the main body portion 20. The non-fixed portion 64 may be configured to be extensible in the extending direction. The extending direction of the non-fixed portion 64 may be a direction from the fixed portion 62 toward the non-fixed portion 64. In a structure in which the fixed portion 62 and the non-fixed portion 64 are adjacent in the front-rear direction L, the extending direction may be the front-rear direction L. Herein, "elongation" includes elongation caused by "elastic deformation" or "plastic deformation". For example, the belt member 60 may be formed of a stretchable sheet or a film.

A temporary fixing portion (not shown) may be provided in the non-fixing portion 64 of the belt member 60. The temporarily securing portion may be detachably joined to the back sheet 22, which is the non-skin-facing surface of the main body portion 20. By providing the temporary fixing portion, the non-fixing portion 64 can be prevented from being lifted up or the non-fixing portion 64 can be prevented from being bent before the belt member 60 is used (during manufacturing or wearing). The engaging force of the temporarily fixing portions may be lower than that of the fixing portions 62. Since the engagement force of the temporarily securing part is lower than the engagement force of the securing part 62, the user can easily peel off the temporarily securing part when using the tape member 60, and can grasp the non-securing part 64 to operate the tape member 60. As the fixing means of the temporarily fixing portion, an adhesive, embossing, thermal welding, or ultrasonic welding can be exemplified, and the amount of application (area, unit area weight) of the adhesive can be reduced as compared with the fixing portion 62, or the compression of the embossing can be reduced as compared with the fixing portion 62. The temporary fixing portion may be formed by embossing the outer edge of the main body portion.

The belt member 60 may be configured to be fixed to the main body portion 20 in a state of being rolled up with the skin-facing surface side of the absorbent article as the inside when the absorbent article 10 is discarded, and to maintain the rolled-up state of the absorbent article 10. The non-fixing portion 64 of the belt member 60 is configured to be fixable to the main body portion 20. The non-fixing portion 64 may be fixed to the main body 20 by an adhesive portion of the main body 20, or may be fixed by a fixing means such as an adhesive agent or a hook member provided on the tape member 60. The fixing portion 62 of the tape member 60 may be configured to be fixable to the main body portion 20. The fixing portion 62 may be a bonding portion of the main body 20, or may be a fixing means such as an adhesive or a hook member provided on the tape member 60.

The non-fixing portion 64 of the tape member 60 of the present embodiment is fixed to the main body 20 via the main body adhesive portion 70 at the time of disposal. In the structure in which the tape member 60 is fixed to the main body portion 20 by the adhesive portion of the main body portion 20, a fixing means such as an adhesive may not be provided in the non-fixing portion 64.

As shown in fig. 2, the belt member 60 may be disposed inside the outer edge 20E of the main body 20 in an unstretched state (natural state). The belt member 60 may be hidden by the main body portion 20 when viewed from the skin-facing surface side. As shown in fig. 4, the belt member 60 may protrude outward with respect to the outer edge 20E of the main body portion 20 in an extended state (extended state). After the absorbent article 10 is used and the main body 20 is rolled up in the front-rear direction L, the user can stretch the belt member 60 outward with respect to the outer edge 20E of the main body 20 and fix the belt member 60 to the main body 20 (see fig. 4).

With such a configuration, the belt member 60 is disposed on the non-skin-facing surface side of the back sheet 22 on the inner side of the outer edge 20E of the main body portion 20 during use of the absorbent article 10, and therefore, body fluid such as menstrual blood does not adhere thereto. After the absorbent article 10 is used, the user can maintain the state in which the absorbent article 10 is rolled up by fixing the belt member 60 protruding outward to the main body adhesive portion 70 or the like. Here, since body fluid such as menstrual blood does not adhere to the belt member 60, a reduction in the joining force between the belt member 60 and the main body adhesive portion 70 or a reduction in the joining force of the fixing means of the belt member can be prevented. Further, since the belt member 60 is provided on the non-skin-facing surface side of the back sheet 22 and does not extend outward relative to the outer edge 20E of the main body portion 20 during use of the absorbent article 10, the belt member 60 does not directly contact the skin of the wearer. Therefore, the uncomfortable feeling and the unpleasant feeling during the use can be reduced.

In another embodiment, the belt member 60 may protrude outward with respect to the outer edge 20E of the main body 20 in an unstretched state (natural state). The state of the belt member 60 may be visually confirmed when viewed from the skin-facing surface side.

Preferably, the belt member 60 is provided at a position rearward of the center of the body portion 20 in the front-rear direction L. When the absorbent article 10 is wound into a roll, the user usually starts to wind the absorbent article 10 in the front-rear direction L from the front end edge E1 or the rear end edge E2. Among them, about eight users start rolling from the front end edge E1 of the absorbent article 10. Thus, the belt member 60 is preferably provided in a region located on the rear side with respect to the center 20CL in the front-rear direction L of the main body portion 20. At least a part of the belt member 60 may straddle the rear end edge of the absorbent core 23 or may be disposed on the rear side of the rear end edge of the absorbent core.

More preferably, the belt member 60 is provided on the rear side of the 2 nd fold F2, which is the rearmost fold among the 1 st fold F1 to the 3 rd fold F3. A user who has about eight costs starts rolling the used absorbent article 10 from the front side. By providing the belt member 60 at a position rearward of the 2 nd fold F2, many users can start winding from the front end edge E1 of the absorbent article 10 and fix the winding terminal portion by the belt member 60.

An example of a specific configuration of the absorbent article of the present embodiment is shown. The surface sheet may consist of a weight per unit area of 30g/m²The hot air non-woven fabric (PE/PET). A second sheet may be disposed between the topsheet and the absorbent core. The second sheet may be made of the same material as the surface sheet. The side sheet may be disposed outside the body in the width direction without disposing the front sheet. The side sheet may have a weight per unit area of 13g/m²The SMS nonwoven fabric (PP) of (1). The absorbent material of the absorbent core may be composed of softwood kraft pulp and a superabsorbent polymer. The proportion of the weight of the superabsorbent polymer relative to the weight of the absorbent material as a whole may be 10%. The area of the absorbent core including the region facing the excretion opening may have a higher weight per unit area than the area around the absorbent core. The weight per unit area of the region of the absorbent core including the excretory opening opposing region S1 may be 950g/m²The weight per unit area of the surrounding area of the absorbent core may be 300g/m². The back sheet may have a basis weight of 23.5g/m²Is made of a polyethylene film (non-breathable type). The absorbent article may be formed with a compressed portion in which the topsheet and the absorbent core are compressed in the thickness direction. The main body bonding part may be made of a rubber-based hot-melt adhesive. The weight per unit area of the main body bonding part may be 27g/m². The body bonding portion may be provided with six strips spaced apart in the width direction. The length of each main body bonding part in the width direction may be 5mm, and the length of each main body bonding part in the front-rear direction may be longThe degree is 320 mm. The length of the absorbent article in the front-rear direction may be 420mm, and the length of the absorbent article in the width direction may be 200 mm. The belt member for post-treatment may be composed of a belt member having a weight per unit area of 35g/m²The polyethylene film of (1). The length of the belt member in the longitudinal direction may be 45mm and the length of the belt member in the short direction may be 25 mm. The belt member may be used with a weight per unit area of 100g/m²The rubber-based hot-melt adhesive is fixed to the main body. The adhesive may be applied in a range of 21mm in width and 5mm in length. The back sheet side of the tape member may be printed. For printing, a pink polyurethane ink can be used. Further, the weight per unit area of the elongated belt member may be 10g/m²A polypropylene layer having a weight per unit area of 10g/m²Styrene-based rubber layer and having a weight per unit area of 10g/m²Is laminated with the polypropylene layer of (a).

Next, the bending origin point portion 80 of the absorbent article configured as described above will be described. The bending base point portion 80 serves as a base point when the main body portion 20 is bent in the front-rear direction L. The bending base point portion 80 facilitates bending of the main body portion 20 due to a difference in rigidity, a difference in thickness, a difference in weight per unit area, and the like.

The bending base point portion 80 may include the compression portion 26. More specifically, the front end edge and the rear end edge of the compression portion 26 constitute bending base point portions 80. In the configuration in which the plurality of compression portions are arranged offset in the front-rear direction, the front end edge and the rear end edge of each compression portion constitute the bending base point portion 80. The compressed portions constituting the bending base point portions 80 are portions obtained by compressing the absorbent core, and do not include portions obtained by compressing only the surface sheet. The compressed portion 26 has higher rigidity and a smaller thickness than the region where the compressed portion 26 is not formed. The compression portion 26 constitutes the bending base point portion 80, and thus the main body portion 20 can be easily compactly wound into a roll by utilizing the difference in thickness and the difference in rigidity. Preferably, as shown in fig. 3, the compressed portion 26 may be recessed from the skin-facing surface side T1 toward the non-skin-facing surface side T2. The user normally winds the absorbent article 10 into a roll with the skin-facing surface side T1 having excrement attached thereto as the inside at the time of disposal. Since the compressed portion 26 is recessed from the skin-facing surface side T1 toward the non-skin-facing surface side T2, the compressed portion is easily deformed so as to approach the skin-facing surface side T1, and the absorbent article is easily rolled with the skin-facing surface side T1 as the inside.

The bending base point portion 80 may include a weight change portion per unit area. The basis weight change portion is a portion where the basis weight of the absorbent material of the absorbent core 23 is different with respect to the adjacent region in the front-rear direction L. Specifically, the front end edge and the rear end edge of the absorbent core 23 constitute a weight-per-unit-area changing portion. The front end edge and the rear end edge of the high basis weight portion also constitute a basis weight varying portion. The low basis weight portion varies depending on the length in the front-rear direction. When the length of the low basis weight portion in the front-rear direction is less than 20mm, the center of the low basis weight portion in the front-rear direction constitutes a basis weight varying portion. When the length of the low basis weight portion in the front-rear direction is 20mm or more, the front end edge and the rear end edge of the low basis weight portion constitute a basis weight changing portion. In addition, in the case where a plurality of low basis weight portions are provided separately in the front-rear direction and are connected, each low basis weight portion separated in the front-rear direction constitutes a basis weight changing portion. The weight per unit area changing portion thus configured has a different weight per unit area of the absorbent material than the regions adjacent in the front-rear direction, and the thickness and rigidity of the absorbent core 23 are different. The basis weight change portion constitutes a bending base point portion, and thus the absorbent article can be easily rolled up compactly into a roll by utilizing the difference in thickness and the difference in rigidity.

The bending origin portion 80 may include a low basis weight portion 25 provided in the absorbent core 23 as a basis weight varying portion. The low basis weight portion 25 has higher rigidity and a smaller thickness than a region where the low basis weight portion 25 is not formed. The low basis weight portion 25 constitutes the bending origin portion 80, so that the absorbent article 10 can be easily rolled up into a roll by utilizing the difference in thickness and the difference in rigidity. Preferably, the low unit area weight portion 25 as the unit area weight varying portion may be provided along the width direction. In a cross-sectional view along the front-rear direction L shown in fig. 3, a length L251 in the front-rear direction of the skin-facing surface of the low basis weight portion 25 may be longer than a length L252 in the front-rear direction L of the non-skin-facing surface of the low basis weight portion 25. Since the length L251 in the front-rear direction of the skin-facing surface of the low basis weight portion 25 is longer than the length L252 in the front-rear direction of the non-skin-facing surface of the low basis weight portion 25, the absorbent article 10 is easily deformed so as to approach the skin-facing surface side, and is easily rolled with the skin-facing surface side as the inside.

The bending base points 80 may include creases F1, F2, and F3 folded in such a manner that the skin-facing side of the absorbent article 10 faces each other. In the structure in which the fold lines have a constant length in the front-rear direction L, the front end edges and the rear end edges of the fold lines F1, F2, and F3 constitute bending base point portions 80. The tendency of folding of the fold lines F1, F2, and F3 (japanese: fold り) is utilized to deform easily so as to bring the skin-facing surface side closer together, and the absorbent article 10 is easily rolled with the skin-facing surface side as the inside. That is, the bending base point portion 80 may be constituted by at least one of the compression portion 26, the low basis weight portion 25, and the fold line. By providing the bending base point portion 80 in this manner, the user can easily roll up the absorbent article 10 in the front-rear direction, and can easily discard the absorbent article in a rolled state.

A plurality of bending base point portions 80 are provided in the 1 st region R1 and the 2 nd region R2, respectively. That is, the base bending point portions 80 are provided in plural in the 1 st region R1 and in plural in the 2 nd region R2. Since the plurality of bending base point portions 80 are provided in each of the 1 st region R1 and the 2 nd region R2, the entire absorbent article can be easily rolled in the front-rear direction. The interval may be a distance in the front-rear direction between the bending base point portions adjacent in the front-rear direction. In addition, in the structure in which a plurality of bending base point portions 80 are provided at intervals in the front-rear direction, each of the bending base point portions functions as a bending base point portion 80. However, when the distance between the bending base point portions 80 in the front-rear direction is 5mm or less, the bending base point portions function as integrated deformation base points, and therefore, the plurality of bending base point portions 80 provided at intervals of 5mm or less constitute one bending base point portion as a whole.

Specifically, the bending base point portions 80 of the 2 nd region R2 according to the present embodiment are provided in the following order with a space in the front-rear direction from the front side toward the rear side. The base folding point portion 80 in the 2 nd region includes the front end edge of the absorbent core, the compressed portion 26 extending in the width direction, a pair of dot-shaped compressed portions 26 spaced apart in the width direction, the compressed portion 26 located at the center in the width direction of the main body portion, the 1 st fold F1, the low basis weight portion 25, and the 3 rd fold F3. The bending base point portions 80 of the 1 st region R1 of the present embodiment are provided in the following order with a space in the front-rear direction from the front side toward the rear side. The bending base point portions 80 of the 1 st region R1 include the 3 rd fold F3, the compressed portion 26 extending in the front-rear direction L, the compressed portion 26 extending in the width direction, the 2 nd fold F2, the compressed portion 26 extending in the width direction, and the rear end edge of the absorbent core.

The average interval of the bending origin portions 80 in the 2 nd region R2 is shorter than the average interval of the bending origin portions 80 in the 1 st region R1. The interval is an interval between the bending base point portions 80 adjacent to each other in the front-rear direction L in each region. The interval also includes the distance between the outer end edge of the absorbent article and the bending origin point portion 80 located on the outermost side in the front-rear direction. For example, in the structure in which two bending base point portions 80 are provided in the 1 st region R1, the average interval is the interval D1 between the two bending base point portions 80. In the structure in which three bending base point portions, i.e., the 1 st bending base point portion, the 2 nd bending base point portion, and the 3 rd bending base point portion, are provided in the 1 st region R1, the average interval is an average of an interval between the 1 st bending base point portion and the 2 nd bending base point portion and an interval between the 2 nd bending base point portion and the 3 rd bending base point portion. The interval is a distance in the front-rear direction between the 1 st and 2 nd base bending points, for example, a distance in the front-rear direction L between the rear end edge of the 1 st base bending point and the front end edge of the 2 nd base bending point. Fig. 1 shows the interval D1 between the bending base point portions 80 in the 1 st region R1 and the interval D2 between the bending base point portions 80 in the 2 nd region R2. In addition, when the plurality of bending base point portions 80 constitute one bending base point portion as a whole, the interval between the bending base point portions provided at an interval of 5mm or less does not include the interval between the bending base point portions 80.

In addition, in the structure in which a plurality of bending base point portions having the same shape are provided on the same line along the width direction W, only one of the bending base point portions on the same line is selected to measure the interval in the front-rear direction. Specifically, as shown in fig. 1, the 2 nd region R2 is provided with dot-shaped compressed portions 26 spaced apart in the width direction W. The dot-shaped compression portions 26 have the 1 st dot-shaped compression portion 261 and the 2 nd dot-shaped compression portion 262 provided on the same line FL1 along the width direction W. A 3 rd dot-shaped compression portion 263 is provided separately from the 1 st dot-shaped compression portion 261 and the 2 nd dot-shaped compression portion 262 in the front-rear direction L. In calculating the average interval of the base bending point portions 80 of the 2 nd region R2, the interval D2 between the 1 st point-like compressed portion 261 and the 3 rd point-like compressed portion 263 may be calculated, and the interval D2 between the 2 nd point-like compressed portion 262 and the 3 rd point-like compressed portion 263 may not be calculated. This is because the 1 st dot-shaped compressed portion 261 and the 2 nd dot-shaped compressed portion 262 function as a base point for bending the main body portion 20 in the front-rear direction L in cooperation with each other, and do not constitute a bending base point displaced in the front-rear direction L.

When the user discards, the absorbent article 10 is wound into a roll from the 2 nd region R2 side, and the absorbent article 10 in the wound state is fixed by the belt member 60. In this case, the average interval of the bending base point portions 80 of the 2 nd region R2 located inside in the wound state is short, and therefore, the wound state can be made compact. Further, since the plurality of bending base point portions 80 are also provided in the 1 st region R1 located on the outer side in the rolled state, both the 1 st region R1 and the 2 nd region R2 can be easily rolled, and the rolled state can be easily maintained. This allows the absorbent article 10 to be cleanly discarded by the belt member 60 while maintaining a compact rolled state.

The number of the bending base point portions 80 of the 2 nd region R2 may be larger than the number of the bending base point portions 80 of the 1 st region R1. Since the number of bending base points of the 2 nd region R2 located inside in the rolled state is large, many deformation base points are formed inside in the rolled state, and the roll can be rolled more compactly. The number of the bending base point portions 80 is calculated by adding the number of all the bending base point portions 80. For example, in a configuration in which a plurality of bending base point portions having the same shape are provided on the same line along the width direction W, the number of bending base point portions is calculated by adding all the bending base point portions, instead of selecting only one of the bending base point portions on the same line. When the absorbent article is rolled up, the absorbent article may be rolled up obliquely with respect to the front-rear direction even if the absorbent article is intended to be rolled up in the front-rear direction. This is because, in such a case, the 1 st dot-shaped compressed portion 261 and the 2 nd dot-shaped compressed portion 262 function as different bending base points.

The bending base point portion 80 may extend in the width direction W. The structure extending in the width direction W includes not only a structure parallel to the width direction W but also a structure inclined at an angle of less than 45 degrees with respect to the width direction W. The deformation base point when the absorbent article 10 is rolled up into a roll extends in the width direction W, and the entire width direction area of the absorbent article 10 is easily rolled up into a roll in the front-rear direction.

The shape of the base bending point is not limited, and may be a point shape, a strip shape, an arc shape, or a polygonal shape. The bending base point portion 80 may have a 1 st bending base point portion 81 and a 2 nd bending base point portion 82. The length W81 in the width direction W of the 1 st bending base point 81 is longer than the length L81 in the front-rear direction L of the 1 st bending base point 81. The length L82 in the front-rear direction L of the 2 nd base point of bending 82 is longer than the length W82 in the width direction W of the 2 nd base point of bending 82. The main body portion 20 is easily bent in the front-rear direction L with the 1 st bending base point portion 81 as a base point, and is also easily bent in the width direction W with the 2 nd bending base point portion 82 as a base point. The number of the 1 st origin of bending portions 81 in the entire absorbent article may be larger than the number of the 2 nd origin of bending portions 82. When the absorbent article is rolled, it is easier to roll in the front-rear direction than in the width direction. This makes it easier to compactly wind the absorbent article in the front-rear direction into a roll, and also makes it easier to maintain the rolled state. Preferably, the number of the 1 st bending base point portions 81 is larger than the number of the 2 nd bending base point portions 82 in the 2 nd region R2, and the number of the 1 st bending base point portions 81 is larger than the number of the 2 nd bending base point portions 82 in the 1 st region R1.

In addition, the absorbent article 10 may be configured to be easily maintained in a rolled state in the front-rear direction L. As shown in fig. 2, the maximum length WR1 in the width direction W of the 1 st region R1 may be longer than the maximum length WR2 in the width direction W of the 2 nd region R2. Since the maximum length WR1 in the width direction of the 1 st region located on the outer side in the rolled state is long, the 2 nd region R2 located on the inner side can be covered with the 1 st region R1 located on the outer side in the rolled state, and the rolled state can be maintained more easily.

The bending base point portions 80 may be provided in a range from the outer end edge in the front-rear direction in the 1 st region R1 of the main body portion 20 to 1/3 of the length in the front-rear direction of the main body portion 20. The outer end edge in the front-rear direction of the main body portion 20 in the 1 st region R1 is the rear end edge of the main body portion 20 in the present embodiment. Fig. 1 shows a range R3 from the outer edge of the main body portion 20 in the front-rear direction to 1/3 of the length of the main body portion 20 in the front-rear direction. The circumference of the state where the main body portion is rolled in the front-rear direction is generally about 1/3 with respect to the length of the main body portion in the front-rear direction. 1/3 corresponding to the length of the main body in the front-rear direction is a portion of the surface located on the outer side when wound in a roll. By providing three or more bending base point portions in this portion, the rolled state can be maintained more easily.

Next, an absorbent article according to another embodiment will be described. In the following modifications and 2 nd embodiment, the same reference numerals are used for the same portions as those of the above embodiment, and the description thereof is omitted. Fig. 5 is a plan view of the absorbent article 10A of modification 1, as viewed from the non-skin-facing surface side. The absorbent article of modification 1 has a high basis weight portion 27. The absorbent article 10A of modification 1 is provided with a belt member 60 between the center 20CL and the rear end edge of the absorbent article. Thus, the 1 st region R1 is located more rearward than the 2 nd region R2. The absorbent article 10A of modification 1 is provided with a plurality of bending base point portions 80.

Specifically, the bending base point portions 80 of the 2 nd region R2 in modification 1 are provided in the following order with a space in the front-rear direction from the front side toward the rear side. The bending base point portion 80 in the 2 nd region includes the front end edge of the absorbent core, the front end edge of the 1 st compressed portion 26A disposed in a pair from left to right, the front end edge of the 2 nd compressed portion 26B located on the inner side of the 1 st compressed portion 26A, the rear end edge of the 2 nd compressed portion 26B, the rear end edge of the 1 st compressed portion, the front end edge of the 3 rd compressed portion 26C disposed in a pair from left to right and located on the rear side of the 1 st compressed portion, the front end edge of the fold F1, the rear end edge of the fold F1, the front end edge of the high basis weight portion, the front end edge of the 4 th compressed portion located on the rear side of the 3 rd compressed portion 26C, and the rear end edge of the 3 rd compressed portion. At this time, the distance in the front-rear direction between the rear end edge of the 2 nd compressed portion 26B, the rear end edge of the 1 st compressed portion, the front end edge of the 3 rd compressed portion 26C, and the front end edge of the fold F1 is 5mm or less, and thus one bending base point portion 80 is constituted.

The bending base point portions 80 of the 1 st region R1 in modification 1 are arranged in the following order from the front side toward the rear side with a space therebetween in the front-rear direction. The bending base point portion 80 of the 1 st region includes the rear end edge of the high unit area weight portion, the front end edge of the 3 rd fold, the rear end edge of the 3 rd fold, the front end edge of the 5 th compressed portion 26E located rearward of the 4 th compressed portion 26D, the rear end edge of the 4 th compressed portion, the front end edge of the 6 th compressed portion 26F located rearward of the 5 th compressed portion 26E, the rear end edge of the 5 th compressed portion, the front end edge of the 2 nd fold, the rear end edge of the 6 th compressed portion 26F, and the rear end edge of the absorbent core. At this time, the distance in the front-rear direction between the rear end edge of the 3 rd fold, the front end edge of the 5 th compressed portion 26E, and the rear end edge of the 4 th compressed portion is 5mm or less, and thus one bending base point portion 80 is constituted. In fig. 5, the portion indicated by the heart shape is a portion obtained by compressing only the surface sheet, and does not constitute the bending base point portion.

Next, an absorbent article 10B according to embodiment 2 will be described. Fig. 6 is a plan view of the absorbent article 10B according to embodiment 1, viewed from the skin-facing surface side. Fig. 7 is a sectional view taken along the line B-B shown in fig. 6. A plan view of the absorbent article viewed from the non-skin-facing surface side and a perspective view of the absorbent article in a rolled state in the front-rear direction are common to fig. 2 and 4 shown in embodiment 1.

Next, the bending origin point portion 80 of the absorbent article configured as described above will be described. The bending base point portion 80 is a base point when the main body portion 20 is bent in the front-rear direction L. The bending base point portion 80 facilitates bending of the main body portion 20 due to a difference in rigidity, a difference in thickness, a difference in weight per unit area, and the like.

The bending base point portions 80 of the 1 st region R1 of embodiment 2 are arranged in the following order from the rear side toward the front side with a space in the front-rear direction. The bending base point portion 80 in the 1 st region includes the rear end edge of the absorbent core, the compressed portion 26 extending in the width direction, a pair of dot-shaped compressed portions 26 spaced apart in the width direction, the compressed portion 26 located at the center in the width direction of the main body portion, the 1 st fold F1, the low basis weight portion 25, and the 3 rd fold F3. The bending base point portions 80 of the 2 nd region R2 of the present embodiment are provided in the following order with a space in the front-rear direction from the rear side toward the front side. The bending base point portion 80 of the 2 nd region R2 includes the 3 rd fold F3, the compressed portion 26 extending in the front-rear direction L, the compressed portion 26 extending in the width direction, the 2 nd fold F2, the compressed portion 26 extending in the width direction, and the front end edge of the absorbent core.

The average interval of the bending base point portions 80 in the 1 st region R1 is shorter than the average interval of the bending base point portions 80 in the 2 nd region R2. The interval is an interval between the bending base point portions 80 adjacent in the front-rear direction L in each region. The interval also includes the distance between the outer end edge of the absorbent article and the bending origin point portion 80 located on the outermost side in the front-rear direction. For example, in the structure in which two bending base point portions 80 are provided in the 1 st region R1, the average interval is the interval D1 between the two bending base point portions 80. In the structure in which three bending base point portions, i.e., the 1 st bending base point portion, the 2 nd bending base point portion, and the 3 rd bending base point portion, are provided in the 1 st region R1, the average interval is an average of an interval between the 1 st bending base point portion and the 2 nd bending base point portion and an interval between the 2 nd bending base point portion and the 3 rd bending base point portion. The interval is a distance in the front-rear direction between the 1 st and 2 nd base bending points, for example, a distance in the front-rear direction L between the rear end edge of the 1 st base bending point and the front end edge of the 2 nd base bending point. Fig. 6 shows the distance D1 between the bending base point portions 80 in the 1 st region R1 and the distance D2 between the bending base point portions 80 in the 2 nd region R2. In addition, when the plurality of bending base point portions 80 constitute one bending base point portion as a whole, the interval between the bending base point portions provided at an interval of 5mm or less does not include the interval between the bending base point portions 80.

In addition, in the structure in which a plurality of bending base point portions having the same shape are provided on the same line along the width direction W, only one of the bending base point portions on the same line is selected to measure the interval. Specifically, as shown in fig. 6, the 2 nd region R2 is provided with dot-shaped compressed portions 26 spaced apart in the width direction W. The dot-shaped compression portions 26 have the 1 st dot-shaped compression portion 261 and the 2 nd dot-shaped compression portion 262 provided on the same line FL1 along the width direction W. A 3 rd dot-shaped compression portion 263 is provided separately from the 1 st dot-shaped compression portion 261 and the 2 nd dot-shaped compression portion 262 in the front-rear direction L. In calculating the average interval of the base bending point portions 80 of the 2 nd region R2, the interval D1 between the 1 st point-like compressed portion 261 and the 3 rd point-like compressed portion 263 may be calculated, and the interval D1 between the 2 nd point-like compressed portion 262 and the 3 rd point-like compressed portion 263 may not be calculated. This is because the 1 st dot-shaped compressed portion 261 and the 2 nd dot-shaped compressed portion 262 function as a base point for bending the main body portion 20 in the front-rear direction L in cooperation with each other, and do not constitute a bending base point displaced in the front-rear direction L.

When the user discards the absorbent article, the absorbent article is wound into a roll from the 2 nd region side, and the absorbent article in the wound state is fixed by the belt member. At this time, the 1 st region R1 located outside when wound into a roll is wound along the portion located inside in the wound state (the 2 nd region R2). Since the average interval of the bending base point portions 80 of the 1 st region R1 is short, the 1 st region R1 located outside in a wound state can be bent at short intervals. Thus, even if the 2 nd region R2 is rolled into a roll and the irregularities are formed on the outer surface, the 1 st region R1 can be easily rolled into a circular shape. Further, since the plurality of bending base point portions 80 are also provided in the 2 nd region R2 located inside in the rolled state, both the 1 st region R1 and the 2 nd region R2 can be easily rolled up by the bending base point portions 80, and the rolled state can be easily maintained. This allows the absorbent article to be discarded cleanly with the belt member for post-treatment while maintaining the state of being wound into a roll.

The number of the bending base point portions 80 of the 1 st region R1 may be larger than the number of the bending base point portions 80 of the 2 nd region R2. Since the number of bending base points of the 2 nd region R2 positioned outside in the wound state is large, many deformation base points are formed outside in the wound state, and the wound state is easily maintained. The number of the bending base point portions 80 is calculated by adding the number of all the bending base point portions 80. For example, in a configuration in which a plurality of bending base point portions having the same shape are provided on the same line along the width direction W, the number of bending base point portions is calculated by adding all the bending base point portions, instead of selecting only one of the bending base point portions on the same line. When the absorbent article is rolled up, the absorbent article may be rolled up obliquely with respect to the front-rear direction even if the absorbent article is intended to be rolled up in the front-rear direction. This is because, in such a case, the 1 st dot-shaped compressed portion 261 and the 2 nd dot-shaped compressed portion 262 function as different bending base points.

Next, an absorbent article according to modification 2 will be described. Fig. 8 is a plan view of the absorbent article 10C of modification 2, as viewed from the non-skin-facing surface side. The absorbent article 10C of modification 2 has a high basis weight portion 27. The absorbent article 10C of modification 2 is provided with a belt member 60 between the center 20CL and the front end edge of the absorbent article. Thus, the 1 st region R1 is located on the front side of the 2 nd region R2. The absorbent article 10C of modification 2 is provided with a plurality of bending base point portions 80.

Specifically, the bending base point portions 80 of the 1 st region R1 in modification 2 are provided in the following order with a space in the front-rear direction from the front side toward the rear side. The bending base point portion 80 in the 1 st region includes the front end edge of the absorbent core, the front end edge of the 1 st compressed portion 26A disposed in a pair from left to right, the front end edge of the 2 nd compressed portion 26B located inward of the 1 st compressed portion 26A, the rear end edge of the 2 nd compressed portion 26B, the rear end edge of the 1 st compressed portion, the front end edge of the 3 rd compressed portion 26C disposed in a pair from left to right and rearward of the 1 st compressed portion, the front end edge of the fold F1, the front end edge of the fold F1, the rear end edge of the fold F1, the front end edge of the high unit area weight portion, the front end edge of the 4 th compressed portion located rearward of the 3 rd compressed portion 26C, and the rear end edge of the 3 rd compressed portion. At this time, the distance in the front-rear direction between the rear end edge of the 2 nd compressed portion 26B, the rear end edge of the 1 st compressed portion, the front end edge of the 3 rd compressed portion 26C, and the front end edge of the fold F1 is 5mm or less, and thus one bending base point portion 80 is constituted.

The bending base point portions 80 of the 2 nd region R2 in modification 2 are arranged in the following order from the front side toward the rear side with a space therebetween in the front-rear direction. The bending base point portion 80 of the 2 nd region includes the rear end edge of the high unit area weight portion, the front end edge of the 3 rd fold, the rear end edge of the 3 rd fold, the front end edge of the 5 th compressed portion 26E located at a position rearward of the 4 th compressed portion 26D, the rear end edge of the 4 th compressed portion, the front end edge of the 6 th compressed portion 26F located at a position rearward of the 5 th compressed portion 26E, the rear end edge of the 5 th compressed portion, the front end edge of the 2 nd fold, the rear end edge of the 6 th compressed portion 26F, and the rear end edge of the absorbent core. At this time, the distance in the front-rear direction between the rear end edge of the 3 rd fold, the front end edge of the 5 th compressed portion 26E, and the rear end edge of the 4 th compressed portion is 5mm or less, and thus one bending base point portion 80 is constituted. In fig. 8, the portion indicated by the heart shape is a portion obtained by compressing only the surface sheet, and does not constitute the bending base point portion.

While the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for illustrative purposes, and the present invention is not limited thereto.

The contents of Japanese patent application No. 2017-252549 and Japanese patent application No. 2017-252547 filed on 27.12.2017 are incorporated herein by reference in their entirety.

Industrial applicability

An absorbent article that can be cleanly discarded by a belt member for post-processing while maintaining a state in which the absorbent article is compactly wound into a roll can be provided.

Description of the reference numerals

10. 10A, 10B, 10C, an absorbent article; 20. a main body portion; 21. a surface sheet; 22. a back sheet; 23. an absorbent core; 25. a low basis weight portion (bending base point portion); 26. a compression portion (bending base point portion); 60. a belt member; 80. bending the base point part; f1, F2, F3, crease (bending base); r1, region 1; r2, region 2; l, the front-back direction; w, width direction.