CN112294544B

CN112294544B - Absorbent article and method for producing absorbent article

Info

Publication number: CN112294544B
Application number: CN201910695059.XA
Authority: CN
Inventors: 穆沁一; 柏木政浩; 蒋维; 马雪琪; 张贤
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2023-05-02
Anticipated expiration: 2039-07-30
Also published as: CN112294544A

Abstract

The invention provides an absorbent article which can be cleanly discarded in a rolled state by a post-treatment member, and a method for manufacturing the same. The absorbent article has: a main body portion having a front sheet, a back sheet, and an absorbent core; and a post-treatment member disposed on the non-skin surface side of the main body portion and having a hook member protruding toward the non-skin surface side. The post-treatment member is joined to the main body portion in a state in which the main body portion is rolled up in the 1 st direction. The main body is folded at a pair of folds, which extend in a 2 nd direction perpendicular to the 1 st direction, and are arranged at intervals in the 1 st direction. The pair of folds has: a 1 st fold line located on one end side of the absorbent core in the 1 st direction; and a 2 nd fold line located on the other end side of the 1 st direction of the absorbent core. The main body portion has a bending base point portion configured to enable bending of the main body portion in a thickness direction. The bending base point portion has a 1 st bending base point portion disposed in a 1 st region between the 1 st crease and one end of the absorbent core.

Description

Absorbent article and method for producing absorbent article

Technical Field

The present invention relates to an absorbent article including a post-treatment member used for disposal and a method for manufacturing the absorbent article.

Background

Patent document 1 discloses an absorbent article such as a disposable diaper or a sanitary napkin provided with a post-treatment member used at the time of disposal. The post-treatment member of patent document 1 is a post-treatment member, and includes a tape base material and a main body adhesive portion provided on the tape base material. The tape base material is provided with: a base portion fixed to the back sheet; and an extension portion provided continuously with the base portion and extendable. The main body bonding portion is provided at the extension portion. When discarding the absorbent article, the user stretches the stretch portion of the tape base material, and the absorbent article is fixed in a rolled state by the main body adhesive portion.

Patent literature

Patent document 1: japanese patent laid-open No. 9-99010

Disclosure of Invention

Problems to be solved by the invention

The tape base material described in patent document 1 is folded before use, and a main body adhesive portion is disposed between the folded tape base materials. The main body adhesive portion is provided on a surface facing the back sheet side in an extended state, and is joined to the back sheet when the absorbent article is discarded, thereby fixing the absorbent article in a rolled state.

As in the absorbent article of patent document 1, there is a demand for an absorbent article that can be compactly rolled up and maintained in a rolled state when discarded. However, absorbent articles having a post-treatment member for disposal have not been sufficiently popular, and there are some cases where a user cannot smoothly perform an operation of extending the post-treatment member or cannot join the post-treatment member to a desired position, and there is room for improvement in terms of operability.

Accordingly, what is desired is an absorbent article and a method of manufacturing an absorbent article that can be cleanly discarded in a rolled-up state with a post-treatment member.

Solution for solving the problem

An absorbent article according to one form comprises: a front-rear direction; a width direction orthogonal to the front-rear direction; a main body portion having a front surface sheet, a back surface sheet, and an absorbent core; and a post-treatment member disposed on the non-skin surface side of the main body portion, the post-treatment member having a hook member protruding toward the non-skin surface side, the post-treatment member being joined to the main body portion in a state in which the main body portion is rolled up in the 1 st direction, whereby the main body portion can be discarded in the rolled-up state. The main body is folded with a pair of folds as a base point, the pair of folds extending along a 2 nd direction orthogonal to the 1 st direction and being arranged at intervals in the 1 st direction, the pair of folds having: a 1 st crease located at one end side of the absorbent core in the 1 st direction; and a 2 nd fold line located on the other end side of the 1 st direction of the absorbent core, the main body portion having a bending base point portion configured to enable bending of the main body portion in a thickness direction, the bending base point portion having a 1 st bending base point portion disposed in a 1 st region between the 1 st fold line and the one end of the absorbent core.

A method for manufacturing an absorbent article according to one aspect is a method for manufacturing an absorbent article comprising: a front-rear direction; a width direction orthogonal to the front-rear direction; a main body portion having a front surface sheet, a back surface sheet, and an absorbent core; a post-treatment member disposed on the non-skin surface side of the main body portion and having a hook member protruding toward the non-skin surface side; and a cover sheet that is disposed on the non-skin surface side of the post-treatment member and covers the hook member, wherein the method for manufacturing the absorbent article comprises the steps of: a post-treatment joining step of joining the post-treatment member to the back sheet; a bonding portion forming step of providing a bonding portion for joining the main body portion to the wearing article to the wrapping sheet; and a sheet disposing step of disposing the surface of the cover sheet on which the adhesive portion is provided and the surface of the back sheet on which the post-treatment member is bonded so as to face each other after the post-treatment bonding step and the adhesive portion forming step, wherein the adhesive portion is provided in a region that does not overlap the post-treatment member in a plan view.

Drawings

Fig. 1 is a plan view of the absorbent article of embodiment 1 in an expanded state, as seen from the skin surface side.

Fig. 2 is a plan view of the absorbent article of embodiment 1 in a 1 st folded state, as seen from the skin surface side.

Fig. 3 is a plan view of the absorbent article of embodiment 1, as seen from the non-skin surface side, in an unfolded state.

Fig. 4 is a cross-sectional view taken along line A-A shown in fig. 1.

Fig. 5 is an enlarged view of a portion B shown in fig. 4.

Fig. 6 is a view showing an absorbent article in a packaged state.

Fig. 7 is a view for explaining a state in which the absorbent article is rolled up in the front-rear direction at the time of disposal.

Fig. 8 is a plan view of the absorbent article of embodiment 2 in an expanded state, as seen from the skin surface side.

Fig. 9 is a view for explaining a folded form of the absorbent article.

Fig. 10 is a diagram for explaining a method of manufacturing an absorbent article.

Description of the reference numerals

1. 1X, an absorbent article; 20. a main body portion; 21. a surface sheet; 22. a back sheet; 23. an absorbent core; 30. a post-treatment member; 31. a hook member; 311. a shaft portion; 312. an umbrella part; 35. a base material sheet; 40. a clad sheet; r1, region 1; r2, region 2; l, front-back direction; w, width direction; d1, the 1 st direction; d2, direction 2.

Detailed Description

(1) Summary of the embodiments

At least the following matters are clarified from the description of the present specification and the drawings.

According to this aspect, the 1 st bending base point portion is arranged in the 1 st region, and therefore the absorbent core is easily bent in the 1 st region. When the main body is rolled up in the 1 st direction from the 1 st region side, the diameter of the main body at the rolling start end can be reduced, and the whole main body can be rolled up compactly. In addition, the main body portion is provided with a habitual fold formed by a crease, and when the main body portion is rolled up in the 1 st direction, the absorbent article can be rolled up with the crease as a bending base point. In this case, the 1 st region is rolled up compactly, and the main body is deformed further with the fold line as a base point, whereby the entire main body can be rolled up compactly. When the body is rolled up in the 1 st direction from the 2 nd region side, a bending base point composed of the 1 st bending base point portion can be formed in the 1 st region located outside in the rolled up state, and the rolling-up terminal can be flexibly deformed, so that the body can be rolled up in a circular shape and compactly as a whole.

According to a preferred embodiment, the 1 st bending base point portion may be disposed outside the outer end of the post-treatment member in the 1 st direction.

The region outside the outer end of the post-treatment member is not affected by the rigidity of the post-treatment member, and is easily deformed flexibly. According to this aspect, the region outside the outer end of the post-treatment member can be rolled up by the 1 st bending base point portion, and the main body portion can be rolled up more compactly.

According to a preferred embodiment, the bending base point portion may have a 2 nd bending base point portion disposed in a 2 nd region between the 2 nd fold and the other end of the absorbent core.

According to this aspect, even when the main body is rolled up from the 1 st region side or the 2 nd region side, the region disposed inside the main body is easily bent by the 1 st bending base point portion or the 2 nd bending base point portion, and the main body is easily rolled up more compactly.

According to a preferred embodiment, the 2 nd bending base point portion may be disposed outside the outer end of the post-treatment member in the 1 st direction.

The region outside the outer end of the post-treatment member is not affected by the rigidity of the post-treatment member, and is easily deformed flexibly. According to this aspect, the region outside the outer end of the post-treatment member can be rolled up by the 2 nd bending base point, and the main body portion can be rolled up more compactly.

According to a preferred embodiment, the pair of folds may be folds for folding the main body portion so that the skin surface sides of the main body portion face each other.

According to this aspect, the absorbent article is easily rolled up with the skin surface side of the main body portion being positioned inward by the habitual fold of the fold.

According to a preferred embodiment, the main body portion may have a pair of wings extending outward in the width direction from the absorbent core, and may be folded on the non-skin surface side of the wearing article when in use, wherein the 1 st direction is the front-rear direction, and the curved base point portion is disposed at a position further outward in the front-rear direction than the wings.

The flaps are folded back toward the non-skin side of the wearing article when in use, and body fluid is less likely to adhere. When the absorbent article is rolled up during disposal, the body is rolled up in the front-rear direction by holding the flaps, whereby the absorbent article can be rolled up while preventing the attachment of body fluid. According to this aspect, since the curved base point portion is provided at the outer side in the front-rear direction with respect to the wing, the region outside in the front-rear direction with respect to the wing can be compactly rolled up while the wing is gripped, and the entire body portion can be compactly rolled up.

According to a preferred embodiment, the bending base point portion may have an edge bending base point portion disposed at a position outside the 1 st region in the 1 st direction.

According to this aspect, the bending base point formed by the end edge bending base point portion is provided in the region on the outer side of the 1 st region in the 1 st direction, and the diameter of the main body portion of the winding start end can be reduced, so that the main body portion can be wound more compactly.

According to a preferred embodiment, the main body portion may have a pair of flaps extending outward in the width direction from the absorbent core, and the flaps may be folded on the non-skin surface side of the wearing article when in use, and the flaps may be folded with flap folds as base points, the flap folds being used to fold the flaps inward in the width direction so as to cover the surface sheet.

According to this aspect, the absorbent article can be rolled up in a state in which at least a part of the front surface sheet is covered with the flaps by folding the flaps inward in the width direction at the time of disposal by using the habitual fold formed by the pair of flap creases. By covering the surface sheet with the wings, body fluid is less likely to adhere to the fingers of the user or the like when discarded. Thus, the absorbent article can be rolled up while suppressing the attachment of body fluid.

According to a preferred embodiment, the bending base point portion may be formed of at least any one of: a core compression unit configured to compress at least the absorbent core in a thickness direction; a unit area weight changing section formed by making the unit area weight of the absorbent material constituting the absorbent core or the unit area weight of the fibers constituting the surface sheet different from the surrounding; an end edge of a cover sheet disposed between the absorbent core and the surface sheet; and a sheet compression unit configured to compress at least the surface sheet in a thickness direction.

The core compressed portion or the sheet compressed portion constitutes the bending base point portion, and the absorbent article can be easily rolled up compactly by utilizing the difference in thickness and the difference in rigidity. The weight change portion per unit area constitutes a bending base point portion, and thus the absorbent article can be easily rolled up compactly by utilizing the difference in thickness and the difference in rigidity. By forming the bending base point portion by the end edge of the cover sheet, the absorbent article can be easily rolled up compactly by utilizing the difference in thickness and the difference in rigidity.

According to a preferred embodiment, the main body may be folded by an auxiliary fold extending in the 1 st direction and configured to fold the main body so that the skin surface sides of the main body face each other.

According to this aspect, the main body portion can be folded to cover at least a part of the front surface sheet when the absorbent article is discarded by using the habitual fold formed by the auxiliary fold, and the absorbent article can be rolled up in this folded state. The body fluid is less likely to adhere to the fingers of the user during disposal, and the absorbent article can be rolled up while suppressing the adhesion of the body fluid. Further, by rolling up the sheet in the 1 st direction in a state where the auxiliary fold is folded up as a base point, the length in the 2 nd direction can be shortened and the length in the 1 st direction can be shortened at the time of discarding, so that the main body portion can be made more compact.

According to a preferred embodiment, the pair of curved base points may be provided at intervals in the 2 nd direction, and the pair of curved base points may be arranged on the same virtual line extending along the 2 nd direction.

According to this aspect, the bending base point when the absorbent article is rolled up along the same virtual line in which the one bending base point portion and the other bending base point portion are arranged can be easily formed. Therefore, the absorbent article can be easily rolled up in the 1 st direction, and the post-treatment member can easily come into contact with the front surface sheet, and the hook member can be unintentionally joined to the front surface sheet, as compared with a structure in which the main body portion is rolled up obliquely.

According to a preferred embodiment, the surface sheet may have a plurality of concave portions recessed in the thickness direction, and the plurality of concave portions may be provided at intervals in the 1 st direction.

According to this aspect, when the main body is rolled up in the 1 st direction, the plurality of concave portions serve as bending base points, and the main body including the surface sheet can be rolled up more compactly.

According to a preferred embodiment, the main body may have a pair of hip flaps extending outward in the width direction from the absorbent core, the pair of hip flaps being disposed so as to face the hips of the wearer in use, the 1 st direction being the front-rear direction, the main body being folded about a 3 rd fold as a base point, the 3 rd fold being disposed at a distance from the pair of folds in the front-rear direction.

The absorbent article having hip flaps is generally an absorbent article for night use, and the length of the absorbent article in the front-rear direction is relatively long. An absorbent article having a long length in the front-rear direction can be folded with 3 or more folds as the base points. The hip flap extends outward in the width direction than the absorbent core when worn, and is difficult for body fluid such as menstrual blood to adhere thereto. By performing the operation of rolling up the main body portion while contacting the hip flap, the absorbent article can be rolled up without soiling the hands.

The adhesive portion and the post-treatment member do not overlap in plan view, and therefore, the adhesion of the adhesive portion to the post-treatment member can be suppressed, and the post-treatment member can be used for disposal in a clean manner. In addition, in the step subsequent to the sheet disposing step, the back sheet and the cover sheet are temporarily fixed by the adhesive portion, and the post-treatment member can be covered with the back sheet and the cover sheet, so that exposure of the post-treatment member can be prevented. In particular, when the absorbent article is produced at a high speed, the exposure of the post-treatment member can be prevented, and the post-treatment member 30 can be provided in a desired form.

According to a preferred embodiment, in the step of forming the adhesive portion, the adhesive portion may be provided in regions corresponding to both sides of the post-treatment member in the width direction.

According to this aspect, the cover sheet and the back sheet are temporarily joined to each other on both sides of the aftertreatment member, so that the sheets are less likely to deviate from each other, and can be manufactured in a state of covering the aftertreatment member.

According to a preferred embodiment, in the step of forming the adhesive portion, the adhesive portion may be provided so that the thickness of the adhesive portion is smaller than the thickness of the post-treatment member.

According to this aspect, the thickness of the post-treatment member is thicker than the thickness of the adhesive portion, and therefore, the region of the cover sheet overlapping the post-treatment member bulges with respect to the region of the cover sheet overlapping the adhesive portion. By partially bulging the cover sheet, the cover sheet is easily peeled off from the back sheet, and the operability is improved.

(2) Absorbent article of embodiment 1

Hereinafter, an absorbent article according to embodiment 1 will be described with reference to the drawings. The absorbent article is preferably an absorbent article such as a sanitary napkin, a panty liner, a breast pad, an incontinence pad for adults, a disposable diaper, a faecal pad or a sweat-absorbent sheet. In particular, the absorbent article is preferably an article to be used which is attached to the inside of a wearing article such as underwear of a user.

In the description of the drawings below, 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 ratio of the respective dimensions and the like may be different from the actual ratio of the respective dimensions and the like. Thus, specific dimensions and the like should be determined with reference to the following description. In addition, there are cases where: the drawings also include portions having different dimensional relationships and ratios.

Fig. 1 and 2 are plan views of the absorbent article of embodiment 1 as seen from the skin surface side. Fig. 1 is an unfolded state of the wing, which will be described later, and fig. 2 is a 1 st folded state after folding the wing. Fig. 3 is a plan view of the absorbent article of embodiment 1, as seen from the non-skin surface side, in an unfolded state. Fig. 4 is a cross-sectional view taken along line A-A shown in fig. 1. The "skin-facing side" herein corresponds to a side facing the skin of the wearer in use. The "non-skin-surface side" corresponds to a side that faces in a direction opposite to the skin of the wearer in use.

The absorbent article 1 has a front-back direction L and a width direction W. The front-rear direction L is a direction extending from the front side (ventral side) to the rear side (dorsal side) of the wearer or a direction extending from the rear 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 1 has a central region S2, a front region S1, and a rear region S3. The central region S2 is the region opposite the wearer' S excretory orifice, such as the vaginal orifice. The central region S2 is a region that is disposed in the crotch portion of the wearing article and between the legs of the wearer when the absorbent article 1 is attached and fixed to the wearing article. The front region S1 is located on the front side of the central region S2. The front end edge of the front side region S1 defines the front end edge of the absorbent article 1. The rear region S3 is located rearward of the central region S2. The rear end edge of the rear side region S3 defines the rear end edge of the absorbent article 1.

The wings 25 are preferably provided in the central region S2. The flaps 25 extend outward in the width direction W than the absorbent core 23, and are folded on the non-skin side T2 of the wearing article when in use. The wings preferably have a front panel 21 and a back panel 22. The tip edge of the flap 25 is defined by the root of the flap 25, and corresponds to a portion located on the front side of two portions recessed inward in the width direction W. The front edge of the flap 25 may also define a boundary between the central region S2 and the front region S1. The rear end edge of the flap 25 is defined by the root of the flap 25, and corresponds to a portion located on the rear side of the two portions recessed inward in the width direction W. The rear end edges of the wings 25 may also define a boundary between the central region S2 and the rear side region S3. The inner edge of the wing 25 is a root of the wing, and is a virtual line connecting the front edge of the wing 25 and the rear edge of the wing 25. In the case of an absorbent article having no flaps 25, the central region S2 may be a region where the main body 20 is trisected in the front-rear direction L at the position where the length of the main body 20 in the front-rear direction L is longest (in the present embodiment, the main body width center 20CW which is the center of the main body 20 in the width direction W) to constitute the front region S1, the central region S2, and the rear region S3, respectively, and in the case of an absorbent article having a high weight per unit area in the absorbent core 23, the region having a high weight per unit area may constitute the central region S2.

The absorbent article 1 preferably has a main body 20 and a post-treatment member 30. The main body 20 includes: a surface sheet 21 facing the skin of the wearer; a back sheet 22 facing the opposite side of the skin of the wearer; and an absorbent core 23 between the topsheet 21 and the backsheet 22. The topsheet 21 is disposed on the side facing the skin of the wearer in use. The surface sheet 21 may be made of a nonwoven fabric or woven fabric having fibers, or may not have fibers. The surface sheet 21 may be configured to be engageable with a hook member 31 of a post-treatment member 30 described later. The surface sheet 21 may be formed of woven fabric or nonwoven fabric having fibers, and the fibers may be caught by the hook members 31, or the skin surface of the surface sheet 21 may be formed with irregularities, and the tips of the hook members 31 may be more easily caught by the irregularities. The backsheet 22 faces the opposite side of the wearer's skin in use. The top sheet 21 is preferably a liquid-permeable sheet. The back sheet 22 preferably comprises a liquid impermeable sheet.

The absorbent core 23 extends along the front-rear direction L of the absorbent article 1. The absorbent core 23 has an absorbent material that can absorb moisture. The absorbent core 23 is preferably covered with a core cladding, not shown. The core cladding can be composed of, for example, tissue paper. In the present specification, the term "along the front-rear direction L" refers to a direction having an angle smaller than 45 ° with respect to the front-rear direction L, and the term "along the width direction W" refers to a direction having an angle smaller than 45 ° with respect to the width direction W.

The pressure-sensitive adhesive portion 50 is provided on the non-skin side T2 of the main body 20 (the non-skin side of the back sheet 22). The adhesive portion 50 is a region provided with an adhesive for joining the main body portion 20 to the wearing article. The adhesive portion 50 preferably has a main body adhesive portion 51 disposed in a region overlapping the absorbent core 23 and a flap adhesive portion 52 provided on the flap 25. The main body adhesive portions 51 extend in the front-rear direction L and are arranged at intervals in the width direction W. The adhesive portion 50 is preferably covered by the cover sheet 40 before use. The main body adhesive portions 51 are preferably disposed on both sides of the post-treatment member 30 in the width direction W. The main body adhesive portion 51 may be arranged to extend in the width direction W and to be spaced apart from each other in the front-rear direction L. The adhesive portion 50 preferably has a function of joining the main body portion 20 to the wearing article when in use and a function of joining the surface sheet 21 with assistance when discarded.

The absorbent article 1 is configured to be disposable in a state in which the absorbent article 1 is rolled up, and more specifically, is configured such that the main body 20 can be disposed in a state in which the main body 20 is rolled up along the 1 st direction D1 by joining the post-treatment member 30 to the main body 20. The 1 st direction D1 in which the absorbent article 1 is rolled is a direction in which the length becomes shorter due to rolling, and in the present embodiment, the front-rear direction L constitutes the 1 st direction D1 as shown in fig. 7. The post-treatment member 30 is provided on the non-skin surface side T2 of the main body 20. The non-skin surface of the main body 20 in the present embodiment is constituted by the back sheet 22, and the post-treatment member 30 is disposed on the non-skin surface of the back sheet 22. The post-treatment member 30 is preferably disposed in a region overlapping the absorbent core 23. The post-treatment member 30 may have a rectangular shape in plan view, or may have a circular shape such as an ellipse, or may be provided in a plurality of points, or may be provided in a plurality of lines, as shown in fig. 3. When the corner of the post-treatment member 30 is curved, such as an oval shape, the sense of discomfort when the post-treatment member 30 touches the user can be reduced.

Fig. 5 is a cross-sectional view of portion B of fig. 4. The post-treatment member 30 has a hook member 31 protruding toward the non-skin surface side T2. The hook member 31 is configured to be engageable with the surface sheet 21 in a state where the main body portion 20 is folded so that the skin surface side T1 of the main body portion 20 is positioned inward, for example, when discarding the absorbent article. The hook member 31 may be constituted by a portion of the back sheet 22 protruding toward the non-skin surface side T2, or may be constituted by a member separate from the back sheet 22. As shown in fig. 5, the hook member 31 of the present embodiment is formed of a member separate from the back sheet 22, and protrudes from the base sheet 35 joined to the non-skin surface of the back sheet 22 toward the non-skin surface side T2. The base sheet 35 and the hook member 31 are preferably integrated. The hook member 31 preferably has a shaft portion 311 protruding toward the non-skin surface side T2 and an umbrella portion 312 extending outward in the planar direction from the shaft portion 311 at the tip end of the shaft portion 311. The number of the hook members 31 may be plural or only 1, and may be arranged at intervals in the front-rear direction L and the width direction W. The base sheet 35 is joined to the non-skin surface of the main body 20. The base sheet 35 of the present embodiment is joined to the back sheet 22 in the joining region. The joint region is preferably provided on the entire aftertreatment member 30.

The post-treatment member 30 is composed of a sheet-like base sheet 35 and a plurality of hook members 31 standing up from the front surface (back surface) of the base sheet, and post-treatment members having, for example, anchor-shaped or hook-shaped hook members 31 and the like can be used. As the post-processing member 30, a male member of a known mechanical planar fastener may be used, for example, a male member such as "MAGICTAPE (registered trademark)" (manufactured by Kuraray corporation) "," quiklon (registered trademark) "(manufactured by YKK corporation)", "MAGICLOTH (registered trademark)" (Kanebo bell touch (manufactured by japanese company, the company of the wiry).

In the modification, the post-treatment member 30 preferably has a post-treatment adhesive portion for joining the hook member 31 and the surface sheet 21 with assistance. The post-treatment adhesive portion is preferably provided on the non-skin-surface side surface of the post-treatment member 30. The post-treatment adhesive portion may be disposed on at least the non-skin surface of the post-treatment member 30, and preferably on a surface of the post-treatment member 30 other than the non-skin surface, such as the surface of the shaft portion. The post-treatment adhesive portion may be provided on the hook member 31, and preferably on the base sheet 35. By providing the post-treatment adhesive portion, the joining force at the time of joining the hook member 31 and the surface sheet 21 at the time of disposal can be further ensured. Even in the case of a nonwoven fabric having short fibers (fiber length is approximately 10mm or less) such as a spun-laced nonwoven fabric or a nonwoven fabric in which it is difficult to ensure the strength of fiber interlacing, the joining force to the surface sheet 21 is ensured by the post-treatment adhesive portion, and the rolled state of the absorbent article 1 is more easily maintained by the post-treatment member 30. The adhesive constituting the post-treatment adhesive portion may be the same as the adhesive portion 50 or may be different from the adhesive portion 50.

The non-skin surface of the absorbent article 1 is preferably covered with the cover sheet 40 before use. The wrapping sheet 40 is preferably at least one of an individual wrapping sheet 41 that individually wraps the absorbent article 1 and a release sheet 42 that covers the adhesive portion 50. Preferably, the cover sheet 40 is disposed on the non-skin surface side T2 of the post-treatment member 30, and preferably covers the hook member 31. The cover sheet 40 covers the absorbent article 1 before use and is separated from the absorbent article 1 at the time of use. By covering the hook member 31 with the cover sheet 40, the hook member 31 can be protected by suppressing the hook member 31 from being exposed to the outside before the absorbent article 1 is used. Thus, the hook member 31 is prevented from being accidentally damaged or the hook member 31 is prevented from accidentally touching the skin before use. The wrapping sheet 40 of the present embodiment is composed of both the individual wrapping sheet 41 and the release sheet 42. As shown in fig. 4, the release sheet 42 is preferably disposed on the non-skin side T2 of the hook member 31 of the post-treatment member 30, and the individual package sheet 41 is preferably disposed on the non-skin side T2 of the release sheet 42. Since the release sheet 42 is disposed between the hook member 31 and the individual package sheet 41, the individual package sheet 41 can be prevented from being accidentally broken by the hook member 31.

Preferably, the main body 20 has a bending base portion 80, and the bending base portion 80 is configured so that the main body 20 can be bent in the thickness direction. The bending base point portion 80 becomes a bending base point when the absorbent article 1 is rolled up at the time of disposal. The bending base point portion 80 makes the main body portion 20 easily bendable by a difference in rigidity, a difference in thickness, a difference in weight per unit area, or the like. When the main body 20 is rolled up in the front-rear direction L, the bending base point 80 can be used as a base point, and the user can easily perform the rolling up operation. The bending base point portion 80 preferably includes a 1 st bending base point portion 81, a 2 nd bending base point portion 82, and an edge bending base point portion 84. The bending base point portion 80 will be described in detail later.

The main body 20 is preferably folded at a plurality of folds as the base points before use. Fig. 6 is a view showing a packaged state in which the absorbent article 1 is folded around a crease as a base point and the main body portion 20 is individually packaged by the individual packaging sheet 41. Fig. 6 (a) is a plan view of the absorbent article in a packaged state, and fig. 6 (b) is a cross-sectional view taken along line C-C shown in fig. 6 (a). The plurality of folds may be folds that fold at least only the main body 20, or folds that fold the main body 20, the post-processing member 30, and the wrapping sheet 40 together. The plurality of folds preferably have a pair of front-rear folds FL extending in the front-rear direction L and a pair of width folds FW extending in the width direction W. Further, the plurality of folds preferably extend at least along a 2 nd direction D2 orthogonal to the 1 st direction D1. As described above, the 1 st direction D1 of the absorbent article of embodiment 1 is the front-rear direction L, and therefore, the 2 nd direction D2 becomes the width direction W. The pair of width creases FW of embodiment 1 constitute a pair of creases extending in the 2 nd direction D2 in the present invention. Therefore, the absorbent article of embodiment 1 may have at least one pair of width folds FW, may not have both of the pair of front and rear folds FL, or may have only one of the pair of front and rear folds FL.

The pair of front and rear folds FL are preferably arranged at intervals in the width direction W, which is the 2 nd direction D2, and are preferably arranged on both sides across the main body width center 20 CW. The pair of front and rear creases FL preferably has a 1 st front and rear crease FL1 and a 2 nd front and rear crease FL 2. The pair of front and rear folds FL are preferably folds for folding the flaps 25 inward in the width direction W. Fig. 2 shows a 1 st folded state in which the flap 25 is folded around the front and rear folds FL as the base point. The pair of front and rear creases FL of embodiment 1 are creases that are located on the outer side in the width direction of the absorbent core 23 and do not fold the absorbent core. However, in the modification, it is preferable that the pair of front and rear creases FL are provided in the region overlapping the absorbent core 23 and that the absorbent core 23 is folded in the 1 st folded state.

The pair of width folds FW are preferably arranged at intervals in the front-rear direction L, which is the 1 st direction D1. The width folds FW preferably have a 1 st width fold FW1 and a 2 nd width fold FW 2. The 1 st width fold FW1 is located on one end side of the absorbent core 23 in the 1 st direction D1, and the 2 nd width fold FW2 is located on the other end side of the absorbent core 23 in the 1 st direction D1. In the example shown in fig. 1 and 2, the 1 st width fold FW1 is a fold closest to the rear end edge 23R of the absorbent core 23 among the plurality of folds, and the 2 nd width fold FW2 is a fold closest to the front end edge 23F of the absorbent core 23 among the plurality of folds. In the modification, another crease extending in the width direction W may be arranged between the 1 st width crease FW1 and the 2 nd width crease FW 2. In the modification, the 1 st width fold FW1 is preferably closest to the front end edge 23F of the absorbent core 23, and the 2 nd width fold FW2 is preferably closest to the rear end edge 23R of the absorbent core 23. The 1 st width fold FW1 and the 2 nd width fold FW2 are lines that fold the absorbent article 1 so that the skin surface side T1 of the main body portion 20 is positioned inward when the absorbent article is packaged (before use). The position of the crease can be determined by the position of the habitual bending, and in the case where the habitual bending of the main body portion 20 is difficult to determine, the positions of the crease of the main body portion 20 and the post-processing member 30 are preferably determined based on the habitual bending of the wrapping sheet 40.

The main body 20 of the absorbent article preferably has the following regions: a 1 st region R1 between the 1 st width fold FW1 and one end of the absorbent core 23 (in the 1 st embodiment, the rear end edge 23R of the absorbent core 23); a 2 nd region R2 between the 2 nd width fold FW2 and the other end of the absorbent core 23 (in embodiment 1, the front end edge 23F of the absorbent core 23); and a 3 rd region R3 between the 1 st width crease FW1 and the 2 nd width crease FW 2. In the 3 rd region R3, the main body adhesive portion 51 and the post-treatment member 30 are preferably arranged. The main body adhesive portion 51 and the post-treatment member 30 are preferably arranged with a gap therebetween in the width direction W. The main body adhesive portion 51 and the post-treatment member 30 are less likely to interfere with each other, and it is possible to suppress the occurrence of a problem such as accidental engagement between the main body adhesive portion 51 and the post-treatment member 30 before disposal. In the modification, the main body adhesive portion 51 and the post-treatment member 30 may be adjacent to each other in the width direction W. In this modification, the main body adhesive portion 51 and the hook member 31 are preferably arranged with a gap therebetween in the width direction W.

The absorbent article 1 of the embodiment is folded together in a state in which the absorbent article 1 is disposed on the individual package sheet 41 and the release sheet 42 at the time of individual packaging before use. As an example of the folded form, in the unfolded state in which the absorbent article 1 is disposed on the individual package sheet 41 and the release sheet 42, the flaps 25 are folded inward in the width direction W with the front-rear creases FL as the base points, and the 1 st folded state (see fig. 2) is set. In the 1 st folded state, only the main body 20 is folded, and the wrapping sheet 40 and the post-treatment member 30 are not folded.

Next, the rear end edge of the absorbent article 1 is folded inward in the front-rear direction L with the 1 st width fold FW1 as a base point. Next, the front edge side of the absorbent article 1 is folded inward in the front-rear direction L with the 2 nd width fold FW2 as a base point. The top end of the area folded with the 2 nd width fold FW2 as a base point (specifically, the front end edge of the individual package sheet 41) is joined to the individual package sheet 41 folded with the 1 st width fold FW1 as a base point by the tape member 45. By being folded in this way, the absorbent article 1 is individually packaged by the individual packaging sheet 41. In the modification, the belt member 45 may not be provided.

Preferably, the topsheet 21 and the post-treatment member 30 are not in contact in a state in which the absorbent article 1 is folded up before use. In the absorbent article 1 of the present embodiment, the top sheet 21 is not disposed so as to cover the non-skin surface side T2 of the post-treatment member 30 in the folded-up state before use, and the post-treatment member 30 is not in contact with the top sheet 21 and the hook member 31 is not accidentally joined to the top sheet 21 in the folded-up state before use. In the case where the width fold is 3 or more and the post-treatment member 30 is disposed so as to extend across the width fold in the front-rear direction L, the surface sheet 21 may be disposed so as to cover the non-skin surface side T2 of the post-treatment member 30 in a state where it is folded up before use. In such a configuration, it is preferable that a constituent member constituting the absorbent article 1 is disposed between the hook member 31 and the topsheet 21. The constituent member is preferably, for example, a cover sheet 40. In the folded state, the constituent members are disposed between the surface sheet 21 and the hook members 31, so that the surface sheet 21 and the hook members 31 are not in contact with each other. Thus, the hook member 31 can be prevented from being accidentally engaged with the surface sheet 21 before use.

Next, a disposal mode of the absorbent article 1 using the post-treatment member 30 will be described with reference to fig. 7. Fig. 7 schematically shows an example of the disposal form of the absorbent article 1. The discarding mode may be different depending on the user, and is not limited to the discarding mode described below. In embodiment 1, the absorbent article 1 is rolled up in at least the front-rear direction L at the time of disposal.

Since the surface sheet 21 is adhered with excrement at the time of disposal, the user may roll up the absorbent article 1 so that the skin surface side T1 of the main body 20 is inside and dispose of it. At this time, as shown in fig. 7 (a) and 7 (b), the main body 20 and the post-treatment member 30 are rolled up in the front-rear direction L from the front end edge or the rear end edge of the main body 20. The non-skin surface side T2 of the portion of the rolling start end of the main body portion 20 is in contact with the surface sheet 21, and the main body portion 20 is rolled up in the front-rear direction L. The non-skin side T2 of the main body 20 is provided with a hook member 31 protruding toward the non-skin side T2. When the main body 20 and the post-treatment member 30 are further rolled up in the front-rear direction L from the state shown in fig. 7 (b), the hook member 31 comes into contact with the surface sheet 21. The umbrella portion 312 of the hook member 31 is hooked to the fiber of the surface sheet 21, and the hook member 31 is engaged with the surface sheet 21, so that the state in which the main body portion 20 is rolled up can be maintained. Thus, the absorbent article 1 can be discarded in a clean state with the surface on which the excrement is attached inside by the post-treatment member 30. The hook members 31 are caught between the fibers of the surface sheet 21 to achieve the joined state, and therefore, even when the surface sheet 21 is wet due to adhesion of body fluid such as menstrual blood, and it is difficult to obtain the joining force of the adhesive portion 50 to the surface sheet 21, the post-treatment member 30 and the surface sheet 21 can be joined. In particular, after the adhesive portion is adhered to underwear or the like, not only the bonding force is reduced, but also the surface sheet 21 is in a wet state, and therefore, the surface sheet 21 and the adhesive portion 50 are in a state where they are difficult to be bonded, and therefore, they can be bonded by the post-treatment member 30. In addition, the operation of joining the hook member 31 of the post-treatment member 30 to the surface sheet 21 can be performed during the rolling up of the absorbent article 1, and a separate operation such as joining can be performed without pulling the post-treatment member 30. Therefore, even when the user does not have to consciously discard the sheet, the body portion 20 can be maintained in a rolled state by the post-treatment member 30.

In addition, in the rolled state of the absorbent article 1, the main body adhesive portion 51 is also in contact with the surface sheet 21. The main body adhesive portion 51 has a function of joining the main body portion 20 to the wearing article at the time of use, and has adhesive force even when weak after the main body portion 20 is detached from the wearing article. The main body adhesive portion 51 is also auxiliarily joined to the surface sheet 21. Thus, the post-treatment member 30 can be joined to the surface sheet 21, and the main body adhesive portion 51 can also be joined to the surface sheet 21.

The flap 25 is preferably folded with a flap crease GL for folding the flap 25 inward in the width direction W to cover the surface sheet 21 as a base point. According to this configuration, the absorbent article 1 can be rolled up with at least a part of the front surface sheet 21 covered with the flaps 25 by folding the flaps 25 inward in the width direction W at the time of disposal by using a habitual fold formed by the pair of flap creases GL (see fig. 7 (a)). By covering the surface sheet 21 with the wings 25 at the time of disposal, body fluid is hard to adhere to the fingers of the user or the like at the time of disposal. Thus, the absorbent article 1 can be rolled up while suppressing the adhesion of body fluid. The flap folds GL may be formed of the front and rear folds FL or folds independent of the front and rear folds FL. The flap folds GL of the present embodiment are formed of front and rear folds FL. In other waste forms, the absorbent article 1 may be rolled up without folding the flaps 25 back toward the skin surface side T1 of the main body 20.

In a state where the flaps 25 are folded onto the skin surface side T1 of the main body 20, at least a part of the post-treatment member 30 preferably overlaps with a region sandwiched by the pair of flaps 25 in a plan view. The flap 25 is preferably folded at the root of the flap in a state of being folded on the skin surface side T1 of the main body 20. In the present embodiment, as shown in fig. 2, in a state where the pair of flaps 25 are folded with the flap folds GL or the front-rear folds FL as the base points, the post-treatment member 30 is preferably disposed in a region that does not overlap with the pair of flaps 25. When the absorbent article 1 is rolled up with the flaps 25 folded to the skin surface side T1 of the main body 20 during disposal, the hook members 31 are not joined to the front sheet 21 even if the post-treatment members 30 contact the portions of the front sheet 21 covered with the flaps 25. However, at least a part of the hook members 31 is disposed in a region sandwiched between the pair of wings 25 in a plan view, so that the surface sheet 21 is exposed in a region between the folded wings 25, and the post-treatment member is joined to the surface sheet 21 in the region.

In the case of having a pair of hip flaps, it is preferable that at least a part of the hook member 31 overlaps with a region sandwiched by the pair of hip flaps in a plan view in a state where the hip flaps are folded onto the skin surface side T1 of the main body 20. The hip flap is preferably folded on the skin surface side T1 of the main body 20 from the root of the front side of the hip flap along a line extending in the front-rear direction L. Alternatively, in a state where the pair of hip flaps are folded with the flap folds GL or the front-rear folds FL as the base points, the post-treatment member 30 is preferably disposed in a region not overlapping the pair of hip flaps. According to this structure, the surface sheet 21 is exposed in the area between the folded hip flaps, and the post-treatment member 30 is joined to the surface sheet 21 in this area.

The absorbent article of the present embodiment is configured such that the main body 20 is easily rolled up more smoothly when the absorbent article 1 is rolled up and discarded. Specifically, the 1 st bending base point portion 81 as the bending base point portion 80 is arranged in the 1 st region R1. The 1 st bending base point portion 81 of the present embodiment is preferably constituted by: a core compression portion 231 that compresses at least the absorbent core 23 in the thickness direction; a rear end edge 51R of the main body adhesive portion 51 (see fig. 3); a sheet compressing portion 211. The 1 st bending base point portion 81 formed by the core compressed portion 231 is a dot, and a plurality of the 1 st bending base point portions are preferably provided at intervals in the width direction W and the front-rear direction L. The rear end edge 51R of the main body adhesive portion 51 can set a bending base point of the absorbent core 23 by utilizing the difference in rigidity caused by the presence or absence of the adhesive.

The body portion 20 is thicker when it is discarded than before use, because it absorbs body fluid. In addition, the post-treatment member 30 having the hook member 31 has higher rigidity than the post-treatment member 30 having no hook member 31. Therefore, when the region of the main body 20 where the absorbent core 23 is disposed is rolled up, it may be difficult to roll up compactly. However, since the 1 st bending base point portion 81 is disposed in the 1 st region R1, the absorbent core 23 is easily bent in the 1 st region R1. When the absorbent article 1 is rolled up from the 1 st region R1 side, the diameter of the main body 20 at the rolling start end can be reduced, and the main body 20 as a whole can be rolled up compactly. In addition, the main body 20 is provided with a habitual fold formed by the 1 st width fold FW1, and when the main body 20 is rolled up in the front-rear direction L at the time of disposal, the absorbent article 1 can be rolled up with the 1 st width fold FW1 as a bending base point. At this time, the 1 st region R1 between the 1 st width fold FW1 and the rear end edge 23R of the absorbent core 23 is compactly rolled up, and further deformed with the 1 st width fold FW1 as a base point, whereby the entire main body portion 20 can be compactly rolled up.

In addition, when the body portion 20 is rolled up from the 2 nd region R2 side, a bending base point composed of the 1 st bending base point portion 81 can be formed in the 1 st region R1 located outside in the rolled up state, and the rolling-up terminal can be deformed flexibly, so that the body portion 20 can be rolled up in a circular shape and compactly as a whole.

The bending base point portion 80 preferably has a 2 nd bending base point portion 82 arranged in the 2 nd region R2. The 2 nd bending base point portion 82 of the present embodiment is preferably constituted by the core compressed portion 231, the leading edge 51F (see fig. 3) of the main body adhesive portion 51, and the sheet compressed portion 211. According to this configuration, both when the body portion 20 is rolled up from the 1 st region R1 side and when the body portion 20 is rolled up from the 2 nd region R2 side (the distal end edge 20F) side, the region disposed inside at the time of rolling up is easily bent by the 1 st bending base point portion 81 or the 2 nd bending base point portion 82, and the body portion 20 is easily rolled up more compactly.

The bending base point portion 80 preferably has a 3 rd bending base point portion 83 arranged in the 3 rd region R3. The 3 rd bending base point portion 83 of the present embodiment is preferably constituted by the core compression portion 231 and the sheet compression portion 211. The 3 rd region R3 is provided with a bending base point constituted by the 3 rd bending base point portion 83, and the entire body portion 20 is easily rolled up. Even when the post-treatment member 30 is disposed in the 3 rd region R3, the 3 rd region R3 is easily rolled up when the 3 rd region R3 is difficult to deform due to the rigidity of the post-treatment member 30.

The 1 st width fold (1 st fold) FW1 and the 2 nd width fold (2 nd fold) FW2 of the present embodiment are provided in a region overlapping the absorbent core 23. Thus, the absorbent core 23 can also be provided with a bending base point by using a habitual bend formed by the 1 st width fold FW1 and the 2 nd width fold FW 2. In embodiment 1, at least the 1 st bending base point portion 81, the 1 st width crease FW1, the 2 nd width crease FW2, and the 2 nd bending base point portion 82 constitute the bending base point of the absorbent core 23 when rolled up from the rear end edge 20R of the main body portion 20. In the modification, it is preferable that the 1 st width fold (1 st fold) FW1 and the 2 nd width fold (2 nd fold) FW2 are provided in a region not overlapping the absorbent core 23. More specifically, the 1 st width fold (1 st fold) and the 2 nd width fold (2 nd fold) are preferably disposed at positions outside the absorbent core 23 in the front-rear direction L.

The 1 st bending base point 81 is preferably disposed outside the outer end of the post-treatment member 30 in the front-rear direction L. In embodiment 1, the 1 st bending base point 81 is preferably disposed at a position further rearward than the rear end edge 30R of the post-processing member 30. The region outside the outer end of the post-treatment member 30 is not affected by the rigidity of the post-treatment member 30, and is easily deformed flexibly. The region outside the outer end of the post-treatment member 30 can be rolled up by the 1 st bending base point portion 81, and the body portion 20 can be rolled up more compactly.

The 2 nd bending base point portion 82 is preferably disposed at a position outside the outer end of the post-treatment member 30 in the front-rear direction L. In embodiment 1, the 2 nd bending base point 82 is preferably disposed on the front side of the front end edge 30F of the post-processing member 30. The region outside the outer end of the post-treatment member 30 is not affected by the rigidity of the post-treatment member 30, and is easily deformed flexibly. The region outside the outer end of the post-treatment member 30 can be rolled up by the 2 nd bending base point portion 82, and the body portion 20 can be rolled up more compactly.

The pair of width folds FW are preferably folds for folding the main body portion 20 so that the skin surface sides T1 of the main body portion 20 face each other. With this configuration, the absorbent article 1 is easily rolled up with the skin surface side T1 of the main body 20 being positioned inward by the habitual bending deformation of the width fold FW. In the modification, when the width fold FW is 3 or more, at least two or more width folds FW are preferably folds for folding the main body 20 so that the skin sides T1 of the main body 20 face each other, and more preferably all of the width folds FW are preferably folds for folding the main body 20 so that the skin sides T1 of the main body 20 face each other.

The curved base point portion 80 is preferably disposed outside the flap 25 in the front-rear direction L. The flaps 25 are folded back toward the non-skin side T2 of the wearing article when in use, and body fluid is less likely to adhere. When the absorbent article 1 is rolled up by a user during disposal, the flap 25 may be held and the main body 20 may be rolled up in the front-rear direction L. Specifically, in a state where the flaps 25 are folded back to the non-skin-surface side T2 with respect to the regions between the flaps 25 (the regions sandwiched by the flaps 25 in the width direction), the flaps 25 can be gripped on the non-skin-surface side T2 of the main body portion 20, while the regions between the flaps 25 are rolled up in the front-rear direction L, or the flaps 25 can be folded back to the skin-surface side T1 with respect to the regions between the flaps 25, and the flaps 25 in the folded back state can be gripped, while the regions between the flaps 25 are rolled up in the front-rear direction L. According to this aspect, the absorbent article 1 can be rolled up while suppressing the adhesion of body fluid. At this time, since the curved base point portion 80 is located outside the wing 25 in the front-rear direction L, the region outside the wing 25 in the front-rear direction L can be compactly rolled up while the wing 25 is gripped, and the entire main body portion 20 can be compactly rolled up.

The bending base point portion 80 preferably has an edge bending base point portion 84 disposed outside the 1 st region R1 in the front-rear direction L. In embodiment 1, the edge bending base point portion 84 is preferably disposed at a position further rearward than the rear edge 23R of the absorbent core 23. The edge bending base point portion 84 is preferably constituted by at least one of the edge compressed portion 27 formed by compressing the front sheet 21 and the back sheet 22 in the thickness direction and a weight change portion per unit area of the fibers constituting the front sheet 21, which weight change portion per unit area is different from the surrounding. The bending base point formed by the end edge bending base point portion 84 is provided in the region on the outer side in the front-rear direction L than the 1 st region R1, and the diameter of the main body portion at the winding start end can be reduced, so that the main body portion 20 can be wound more compactly. The edge bending base point portion 84 may be disposed outside the 2 nd region R2 in the front-rear direction L. The diameter of the main body 20 at the winding start end can be reduced both when the main body 20 is wound up from the 1 st region R1 side and when the main body 20 is wound up from the 2 nd region R2 side, and the main body 20 can be wound up more compactly.

The main body 20 is preferably folded by an auxiliary fold AL extending along the 1 st direction D1, and the auxiliary fold AL is used to fold the main body 20 so that the skin surface sides T1 of the main body 20 face each other. The absorbent article 1 according to embodiment 1 is folded by the front and rear folds FL so that the skin surface sides T1 of the main body 20 face each other, and the auxiliary folds AL are constituted by the front and rear folds FL. The main body 20 is folded to cover at least a part of the front surface sheet 21 by a habitual fold formed by the auxiliary crease AL at the time of disposal, and the absorbent article 1 can be rolled up in this folded state. The body fluid is less likely to adhere to the fingers of the user or the like at the time of disposal, and the absorbent article 1 can be rolled up while suppressing the adhesion of the body fluid. Further, by rolling up along the 1 st direction D1 in a state where the auxiliary fold line AL is folded as a base point, the length of the 2 nd direction D2 can be shortened and the length of the 1 st direction D1 can be shortened at the time of discarding, so that the main body 20 can be made more compact. The auxiliary fold line AL may be formed by folding only the front surface sheet 21 or the like at a position outside the absorbent core 23 in the 2 nd direction D2, or may be formed by folding the absorbent core 23 at a region overlapping the absorbent core 23.

The pair of curved base points 80 are provided at intervals in the 2 nd direction D2, and the pair of curved base points 80 are preferably arranged on the same virtual line VL extending along the 2 nd direction D2. In embodiment 1, the bending base point portion 80 is preferably disposed on the same virtual line VL extending in the width direction W so as to be axisymmetric with respect to the main body width center 20 CW. One bending base point portion 80 and the other bending base point portion 80 are disposed on both sides of the main body width center 20CW, and the one bending base point portion 80 and the other bending base point portion 80 are disposed on the same virtual line. A bending base point when the absorbent article 1 is rolled up along the virtual line VL is easily formed. Therefore, the main body 20 is easily rolled up in the 1 st direction D1, and the post-treatment member 30 is easily brought into contact with the surface sheet 21, and the hook member 31 and the surface sheet 21 can be unintentionally joined to each other, as compared with a structure in which the main body 20 is rolled up obliquely.

The surface sheet 21 has a plurality of concave portions recessed in the thickness direction, and a plurality of concave portions are preferably provided at intervals in the 1 st direction D1. The concave portion is preferably constituted by an opening portion formed in the surface sheet 21, a groove portion of a ridge groove portion formed in the surface sheet 21, a thermally bonded portion formed by thermally bonding fibers constituting the surface sheet 21, and a sheet compression portion 211 formed by compressing the surface sheet 21. The concave portion may be constituted by a sheet compression portion and a weight change portion per unit area as bending base points. When the body 20 is rolled up along the 1 st direction D1, the plurality of concave portions serve as bending base points, and the body 20 including the surface sheet 21 is easily rolled up more compactly.

The bending base point portion 80 is preferably constituted by at least any one of the following portions: a core compression portion 231 that compresses at least the absorbent core 23 in the thickness direction; a unit area weight changing section formed by making the unit area weight of the absorbent material constituting the absorbent core 23 or the unit area weight of the fibers constituting the surface sheet 21 different from the surrounding unit area weight; an end edge of a cover sheet disposed between the absorbent core 23 and the surface sheet 21; and a sheet compression portion 211 that compresses at least the surface sheet 21 in the thickness direction.

The core compressed portion 231 may be formed by compressing at least the absorbent core 23 in the thickness direction, or the surface sheet 21 and the core cladding may be compressed together with the absorbent core 23. The sheet compression portion 211 may be formed by compressing at least the front sheet 21 in the thickness direction, or the back sheet 22 may be compressed together with the front sheet 21. Further, the compressed portion where the absorbent core 23 and the surface sheet 21 are compressed together constitutes the core compressed portion 231, and constitutes the sheet compressed portion 211. The core compressed portion 231 or the sheet compressed portion 211 has higher rigidity and a thinner thickness than the region where the core compressed portion 231 or the sheet compressed portion 211 is not formed. The core compressed portion 231 or the sheet compressed portion 211 constitutes the bending base point portion 80, and thus the absorbent article 1 can be easily rolled up compactly by utilizing the difference in thickness and the difference in rigidity. Preferably, the core compressed portion 231 and the sheet compressed portion 211 are recessed from the skin surface side T1 toward the non-skin surface side T2. Generally, the user rolls up the absorbent article 1 so that the skin surface side T1 to which the excrement is attached is positioned inside when discarding the article. The compressed portion is recessed from the skin surface side T1 toward the non-skin surface side T2, and therefore, the absorbent article 1 is easily deformed so that the skin surface side T1 is close to each other, and is easily rolled up so that the skin surface side T1 is positioned inside.

The weight per unit area change portion may be a portion having a different weight per unit area (for example, a low weight per unit area portion) such as an absorbent material, or may be an opening formed in the surface sheet 21. Specifically, the end edge of the absorbent core 23, the end edge of the high basis weight portion, the end edge of the low basis weight portion, the end edge of the opening of the topsheet, and the end edge of the adhesive portion 50 constitute a basis weight change portion. The low basis weight portion varies depending on the length. When the length of the low basis weight portion is smaller than the thickness of the absorber, the center of the low basis weight portion constitutes the basis weight changing portion. When the length of the low basis weight portion is equal to or greater than the thickness of the absorber, the end edge of the low basis weight portion constitutes the basis weight changing portion. The weight change portion per unit area constitutes the bending base point portion, and thus the absorbent article 1 can be easily rolled up compactly by utilizing the difference in thickness and the difference in rigidity. The cover sheet disposed between the absorbent core 23 and the surface sheet 21 is composed of a second sheet for improving the introduction of body fluid, and a core wrap composed of tissue paper or the like. The region where the cover sheet is disposed and the region where the cover sheet is not disposed differ in thickness and rigidity due to the presence or absence of the cover sheet. Therefore, by constituting the bending base point portion by the end edge of the cover sheet, the absorbent article 1 can be easily rolled up compactly by utilizing the difference in thickness and the difference in rigidity.

The bending base point portion 80 preferably extends along the width direction W at a position outside the post-treatment member 30 in the front-rear direction L. When the main body 20 is rolled up in the front-rear direction L, the bending base point 80 can be used as a base point, and the user can easily perform the rolling up operation. At this time, since the bending base point when the absorbent article 1 is rolled up extends in the width direction W, the entire width direction W of the main body 20 is easily rolled up in the front-rear direction L. Further, when starting rolling from the region outside the post-treatment member 30 in the front-rear direction L, the body portion 20 can be rolled up compactly as a whole with the curved base point portion 80 as the base point. In addition, when a plurality of bending base points 80 are provided at intervals, the plurality of bending base points 80 function as bending base points 80, respectively. However, when the distance between the bending base points 80 in the longitudinal direction L is 5mm or less, the bending base points function as an integrated bending base point, and therefore, the plurality of bending base points provided at intervals of 5mm or less entirely constitute 1 bending base point.

The shape of the curved base point portion 80 is not limited, and may be a dot shape, a strip shape, an arc shape, or a polygonal shape. The bending base point portion 80 is preferably provided in a range of 3 or more from the outer edge of the body portion 20 in the front-rear direction L to 1/3 of the length of the body portion 20 in the front-rear direction L. Generally, the circumference of the body 20 rolled up along the longitudinal direction L is 1/3 of the length of the body 20 in the longitudinal direction L. 1/3 of the length of the body 20 in the front-rear direction L is a region of the winding start end or the winding end. By providing 3 or more curved base points 80 at this portion, the rolled state can be maintained more easily.

The post-treatment member 30 is preferably disposed in the 3 rd region R3. At least a part of the post-treatment member 30 may be placed between the 1 st width fold FW1 and the 2 nd width fold FW2, and the post-treatment member 30 may be placed across the 1 st width fold FW1 and the 2 nd width fold FW 2. The 3 rd region R3 is located between the winding start end and the winding end, and is easily covered with the winding end side surface sheet 21, both in a state of being wound from the front side region S1 and in a state of being wound from the rear side region S3. Therefore, by joining the post-treatment member 30 to the surface sheet 21 at the time of disposal, the rolled state can be maintained, and the absorbent article can be cleanly discarded by the post-treatment member 30. The post-treatment member 30 may be disposed across the center of the body 20 in the front-rear direction L.

The post-treatment member 30 is preferably disposed in the 3 rd region R3 so as not to cross at least one of the 1 st width fold FW1 and the 2 nd width fold FW 2. A habitual fold of a crease is formed in the main body 20. In a state where the skin surface side T1 is rolled up, the front region and the rear region bordered by the fold line are deformed toward the skin surface side (inner side) with the fold line as a base point. If the post-treatment member 30 and the surface sheet 21 are deformed inward at the boundary of the fold, the hook member 31 and the surface sheet 21 may be difficult to be joined or the temporarily joined hook member 31 may be separated. By not straddling the folds, the engagement state of the hook member 31 can be suppressed from being accidentally released by habitual bending. Further, when the absorbent article 1 is rolled up, the absorbent article can be rolled up from the fold side not straddled by the post-treatment member 30, and the absorbent article can be rolled up without receiving the repulsive force of the post-treatment member 30 to be restored to the planar state, and can be rolled up more compactly with a weaker force. In addition, by disposing the post-treatment member 30 so as to straddle the fold line covered by the surface sheet 21 when rolled up, the hook member 31 and the surface sheet 21 are easily joined due to the repulsive force of the post-treatment member 30.

The post-treatment member 30 may be provided in a size necessary to secure the joining force with respect to the topsheet 21 while suppressing discomfort during wearing. The length of the post-treatment member 30 in the front-rear direction L is preferably longer than the thickness of the absorbent core 23 and shorter than the length of the absorbent core 23 in the front-rear direction L, and the length of the post-treatment member 30 in the front-rear direction L of the present embodiment is preferably 80mm. Since the length of the post-treatment member 30 in the front-rear direction L is longer than the thickness of the absorbent core 23, the post-treatment member 30 can be prevented from making point contact with the topsheet 21 when the main body 20 is rolled up, and the contact area between the post-treatment member 30 and the topsheet 21 can be ensured. Further, since the length of the post-treatment member 30 in the front-rear direction L is shorter than the length of the absorbent core 23 in the front-rear direction L, the stiffness of the post-treatment member 30 can be suppressed from being transmitted to the skin surface of the main body portion 20, and the uncomfortable feeling can be reduced. The length of the post-treatment member 30 in the width direction W is preferably 1mm or more and not more than the length of the absorbent core 23 in the width direction W. Since the length in the width direction W of the post-treatment member 30 is 1mm or more, the bonding strength to the surface sheet 21 is easily ensured. Further, since the length in the width direction W of the post-treatment member 30 is smaller than the length in the width direction W of the absorbent core 23, the main body adhesive portion can be disposed in the width region, and the main body portion 20 can be stably joined to the wearing article. More preferably, the length of the post-treatment member 30 in the width direction W is 5mm to 35mm, and the length of the post-treatment member 30 in the width direction W of the present embodiment is 15mm. The post-treatment member 30 can be stably produced, and the main body adhesive portion can be easily disposed also in the core disposition region, so that the main body portion 20 can be stably joined to the wearing article. The area of the post-treatment member 30 is preferably less than 20% of the area of the entire body portion 20. Since the area of the post-treatment member 30 having the hook member 31 is smaller than the area of the entire main body portion 20, the rigidity of the absorbent article 1 can be suppressed from being increased by the post-treatment member 30, and the uncomfortable feeling when worn can be suppressed.

The post-processing member 30 is preferably disposed so as to straddle the body width center 20 CW. The post-processing member 30 can be joined to the body width center 20 CW. In general, at the body width center 20CW, the length of the body portion 20 in the front-rear direction L is longest. By engaging the portion of the body portion 20 having the longest length in the front-rear direction L with the hook member 31, the entire area of the body portion 20 in the front-rear direction L can be maintained in a rolled state. In addition, in general, when the absorbent article 1 is rolled up at the time of disposal, the absorbent article is rolled up with the main body width center 20CW as a base point. At this time, since the post-treatment member 30 is present at the portion that becomes the base point, the post-treatment member 30 and the surface sheet 21 can be unintentionally pressed in the direction facing each other during the operation of rolling up the absorbent article 1, and the hook member 31 can be joined to the surface sheet 21.

In the modification, the post-processing member 30 may be disposed in a pair across the main body width center 20 CW. The rolled state can be maintained in the entire width direction W of the body portion 20 by the pair of post-processing members 30 across the body width center 20 CW. The length in the width direction W that can be joined can be ensured by the post-treatment member 30, and therefore, is particularly suitable in an absorbent article having a long length in the width direction W.

The distance D27 (see fig. 1) in the front-rear direction L between the outer edge of the absorbent core 23 in the front-rear direction L and the edge bending base point portion 84 is preferably longer than the length T23 (see fig. 4) in the thickness direction of the absorbent core 23. The rigidity between the end edge compressed portion 27 and the outer end edge of the absorbent core 23 is lower than the rigidity between the end edge compressed portion 27 and the absorbent core 23, and the end edge compressed portion 27 and the outer end edge of the absorbent core 23 are easily deformed flexibly. If the region between the edge compressed portion 27 and the outer edge of the absorbent core 23 is shorter than the length T23 in the thickness direction of the absorbent core 23, when the absorbent article 1 starts to be rolled up from the edge compressed portion 27 side, the region between the edge compressed portion 27 and the outer edge of the absorbent core 23 is hard to be flexibly deformed due to the influence of the thickness of the absorbent core 23, and the base point of the rolling start is hard to be formed. However, since the distance between the edge compressed portion 27 and the outer edge of the absorbent core 23 is longer than the thickness of the absorbent core 23, when rolling up from the edge compressed portion 27 side, the region between the edge compressed portion 27 and the outer edge of the absorbent core 23 is flexibly deformed, and a base point of the rolling-up start is easily formed. In addition, when the end edge compressed portion 27 side is the rolling end, the region between the end edge compressed portion 27 and the outer end edge of the absorbent core 23 is easily deformed flexibly regardless of the rigidity of the absorbent core 23, and is easily deformed into a circular outer shape due to the difference in thickness from the core arrangement region, so that the main body portion 20 is easily rolled up more compactly.

The post-treatment member 30 preferably has a lower bending stiffness than the region where the front sheet 21, the back sheet 22 and the absorbent core 23 are overlapped. When the absorbent article 1 is used, the post-treatment member 30 is disposed on the non-skin surface side T2 of the main body portion 20, and the post-treatment member 30 indirectly contacts the skin. At this time, the bending rigidity of the post-treatment member 30 is low, and therefore, the uncomfortable feeling to the wearer can be suppressed.

The bending rigidity of the post-treatment member 30, the back sheet 22, the absorbent core 23, and the portion where the front sheet 21, the back sheet 22, and the absorbent core 23 are overlapped are measured by taber method defined by the standard specification JISP-8125. For example, first, a test piece having a width of 25mm and a length of 38mm is collected from a member (piece) to be measured. Next, a thickness gauge (e.g., phi 44mm 3g/m manufactured by PEACOCK ² ) The thickness of the test piece was measured. Next, the test piece was set on a taber durometer of An Tian finishing machine. Next, the test piece was placed between rollers of taber hardness tester, and the jig interval was held in accordance with the thickness of the test piece. In addition, the upper end of the test piece was aligned with the upper surface of the jig. The spacing between the roller and the test piece was adjusted to about 0.5mm so that the roller did not compress the test piece. The test piece bending device of the Talbot hardness tester is rotated, the rotation of the bending device is stopped at the point where the score line of the test piece bending device representing 15 degrees is consistent with the pointer of the load swing rod, and the load scale indicated by the pointer of the swing rod at the moment is read. The load swing rod is immediately rotated in the opposite direction, the load scales are read in the same way, and the average value of the load scales in the left direction and the right direction is obtained. The auxiliary weight (Japanese (O) も ms) is optionally selected so that the indicated load scale is within a range of 15% to 85% of the maximum scale. Then, the "stiffness (g·cm) = The bending stiffness (g.cm)) of the test piece was calculated as the average value of the load scale×10×the numerical value of the weight ". In addition, in the case where the length in the width direction W of the sample is less than 25mm, the data measured in terms of the maximum width of the sample is converted into N/25mm. In addition, in the case where the length of the sample is less than 38mm, the maximum length is measured. Further, the bending stiffness was measured 10 times, and the average value was obtained.

(3) Absorbent article of embodiment 2

Next, the absorbent article of embodiment 2 will be described. Fig. 8 is a plan view of the absorbent article of embodiment 2 in an expanded state as seen from the skin surface side. Fig. 9 is a view showing a state in which the absorbent article of embodiment 2 is rolled up at the time of disposal. In the following description of embodiment 2, the same components as those of embodiment 1 are denoted by the same reference numerals, and description thereof is omitted.

The absorbent article 1X according to embodiment 2 is configured to be rolled up in the width direction W when discarded. Therefore, the 1 st direction D1 is the width direction W, and the 2 nd direction D2 is the front-rear direction L. The front-rear folds FL constitute a pair of folds extending in the 2 nd direction D2 of the present invention. Therefore, the absorbent article 1X according to embodiment 2 may have at least one pair of front and rear folds FL, and may not have both the pair of width folds FW, or may have only one of the pair of width folds FW.

The 1 st front-back crease (1 st crease) FL1 and the 2 nd front-back crease (2 nd crease) FL2 of the absorbent article of embodiment 2 are arranged at positions outside the absorbent core 23 in the width direction W. Thus, the 1 st region R1 and the 2 nd region R2 are provided at positions outside the outer edge 23E of the absorbent core 23 in the width direction W. Specifically, the 1 st region R1 is a region between the outer edge 23E of the absorbent core 23 and one end edge 25E1 of the flap 25 (one end edge of the main body 20), and the 2 nd region R2 is a region between the outer edge 23E of the absorbent core 23 and the other end edge 25E2 of the flap 25 (one end edge of the main body 20).

The 1 st region R1 is provided with a 1 st bending base point portion 81, and the 2 nd region R2 is provided with a 2 nd bending base point portion 82. The top sheet 21X of the absorbent article 1X of embodiment 2 is different from the top sheet 21 of embodiment 1. The surface sheet 21X of embodiment 2 includes: a center sheet 21C covering the center of the absorbent core 23 in the width direction W; and side panels 21S overlapping the outer side portions of the center panel 21C. The positions of the center sheet 21C and the side sheets 21S in the thickness direction T are not limited. The outer edge 21CE of the center sheet 21C constitutes the curved base point portion 80, and the inner edge 21SE of the side sheet 21S constitutes the curved base point portion 80. The bending base point of the main body 20 is constituted by the thickness and rigidity depending on the presence or absence of the sheet. The 1 st curved base point portion 81 and the 2 nd curved base point portion 82 are preferably constituted by the outer edge 21CE of the center sheet 21C and the inner edge 21SE of the side sheet 21S.

In embodiment 2, at least the 1 st bending base point portion 81 and the 2 nd bending base point portion 82 constitute a bending base point of the main body portion 20 when the main body portion 20 is rolled up in the width direction W. In addition, the 1 st width crease FW1 and the 2 nd width crease FW2 constitute an auxiliary crease. The auxiliary folds may be provided in the region overlapping the absorbent core 23 or in the region not overlapping the absorbent core 23.

The 3 rd region R3 is provided with a 3 rd bending base point portion 83. The 3 rd bending base point portion 83 is preferably constituted by side edges extending in the front-rear direction of the sheet compression portion 211, the core compression portion 231, and the main body adhesion portion 51.

As shown in fig. 9, when the absorbent article 1X is rolled up and discarded, the front end edge 20F of the main body 20 is folded with the 2 nd width fold FW2 as a base point, so that the state shown in fig. 9 (a) is changed to the state shown in fig. 9 (b). Then, the rear end edge 20R of the main body 20 is folded with the 1 st width fold FW1 as a base point to change from the state shown in fig. 9 (b) to the state shown in fig. 9 (c). The sequence of the folding operation with the 1 st width fold FW1 as the base point and the folding operation with the 2 nd width fold FW2 as the base point may be reversed.

Next, the flap 25 is folded with one of the pair of front and rear creases FL as a base point. In the present embodiment, the flap 25 is folded with the 1 st front-rear fold line FL1 as a base point. This brings the state shown in fig. 9 (d). Next, the main body 20 is rolled up along the width direction W, which is the 1 st direction D1. At this time, one of the flaps 25 (in the case of the form shown in fig. 9, the flap 25 on the side of the 2 nd front-rear fold FL 2) is not folded inward in the width direction W. Thus, the user can hold one of the flaps 25 and simultaneously perform the operation of rolling up the absorbent article 1. The flaps 25 are disposed on the non-skin-surface side T2 of the wearing article when in use, and body fluid is not attached. Thus, the user can roll up the absorbent article 1 without soiling the hands. Further, when the main body 20 is rolled up in the width direction W, the flaps 25 located at one end in the width direction W are gripped, and the absorbent article 1 can be rolled up in a state where a constant tension is applied to the main body 20 in the width direction W. Thus, the body portion 20 can be rolled up more compactly. As shown in fig. 9 (f), in the rolled state of the absorbent article 1, the post-treatment member 30 is joined to the surface of the main body 20, and the rolled state of the main body 20 can be maintained.

Further, the main body adhesive portion 51 is disposed in a region extending from the flap 25 in the width direction W. As shown in fig. 9 (f), one of the flaps 25 may be joined to the main body adhesive portion 51 in a state where the absorbent article 1 is rolled up. By fixing the flap 25 to the main body adhesive portion 51, the rolled state along the width direction W is more easily maintained.

In embodiment 2 described above, after folding the sheet with the width fold as the base point, folding the sheet with the 1 st front-rear fold as the base point, and then rolling up the main body 20 in the width direction W, but the folded form is not limited to this form. Specifically, the absorbent article 1 may be rolled up by folding the main body 20 in the width direction W without the width fold as the base point and folding the main body with the 1 st front and rear folds as the base point, or by folding the main body without the width fold as the base point and folding the main body with the 1 st front and rear folds as the base point.

Next, an example of a method for manufacturing the absorbent article configured as described above will be described. In the following method for producing an absorbent article, a known method for producing an absorbent article can be applied to steps other than the steps described above. The method for manufacturing the absorbent article comprises at least the following steps: a post-treatment joining step S110 of joining the post-treatment member 30 to the back surface sheet 22 in the post-treatment joining step S110; a bonding portion forming step S120 of providing the bonding portion 50 for bonding the main body portion 20 and the wearing article to the wrapping sheet 40 in the bonding portion forming step S120; and a sheet disposing step S130 of disposing the surface of the cover sheet on which the adhesive portion is provided and the surface of the back sheet on which the post-treatment member is bonded so as to face each other in the sheet disposing step S130.

In the post-treatment joining step S110, the post-treatment member 30 is joined to the surface of the non-skin surface side T2 of the back sheet 22. More specifically, the back sheet continuous body 22C in which the back sheet 22 is continuously fed in the front-back direction L is joined to the post-processing member 30 at intervals in the feeding direction MD. In the modification, the post-processing member 30 may be bonded to each other with a gap therebetween along the orthogonal direction CD orthogonal to the conveyance direction MD, using the back sheet continuous body 22C in which the back sheet 22 is continuous along the width direction W.

In the adhesive portion forming step S120, an adhesive portion 50 for joining the main body portion and the wearing article is provided on the cover sheet 40. The wrapping sheet 40 may be a single wrapping sheet 41 or a release sheet 42 covering the adhesive portion 50. In the present embodiment, the main body adhesive portion 51 is provided by conveying a continuous body 42C of the release sheet 42 covering the main body adhesive portion 51 and continuous in the front-rear direction L. In this case, the main body adhesive portion 51 is preferably provided in a row extending in the conveyance direction MD, and a plurality thereof are preferably provided at intervals in the orthogonal direction CD. In the modification, the adhesive portion 50 may be provided using a continuous separator 42C in which the separator 42 is continuous in the width direction W. In the modification, the adhesive portion 50 may be provided in the individual package sheet 41 constituting the wrapping sheet 40.

The sheet disposing step S130 is to dispose the surface of the cover sheet 40 on which the adhesive portion 50 is provided and the surface of the back sheet 22 on which the post-treatment member 30 is bonded so as to face each other after the post-treatment bonding step S110 and the adhesive portion forming step S120. The surface of the cover sheet 40 on which the adhesive portion 50 is provided is the surface of the cover sheet on the skin surface side T1, and the surface of the back sheet 22 on which the post-treatment member 30 is bonded is the surface of the back sheet 22 on the non-skin surface side T2. In the sheet disposing step S130, the adhesive portion 50 is provided in a region that does not overlap with the post-treatment member 30 in a plan view. In this case, a continuous body of the cover sheet 40 continuous in the conveyance direction MD may be used, or each cover sheet 40 shown in fig. 10 may be used to join the back surface sheet continuous body 22C at intervals in the conveyance direction MD.

According to this manufacturing method, in the post-processing joining step S110, the post-processing member 30 can be set at an appropriate position by joining the post-processing member 30 to the back sheet 22. Further, since the adhesive portion 50 and the post-treatment member 30 do not overlap each other in a plan view, the adhesion of the adhesive portion 50 to the post-treatment member 30 can be suppressed, and the post-treatment member can be cleanly discarded when discarded. In the step subsequent to the sheet disposing step S130, the back sheet 22 and the cover sheet 40 are temporarily fixed by the adhesive portion 50, and the post-treatment member 30 can be covered with the back sheet 22 and the cover sheet 40, so that exposure of the post-treatment member 30 can be prevented. In particular, when the absorbent article is produced at a high speed, the exposure of the post-treatment member 30 can be prevented, and the post-treatment member 30 can be provided in a desired form.

In the adhesive portion forming step S120, the adhesive portion 50 is provided in the region corresponding to both sides of the post-treatment member 30 in the width direction W. The orthogonal direction CD of the method for manufacturing an absorbent article according to the present embodiment is along the width direction W. Thus, in the adhesive portion forming step S120, the adhesive portion 50 is provided in the region corresponding to both sides of the post-treatment member 30 in the orthogonal direction CD. Since the cover sheet 40 and the back sheet 22 are temporarily joined to each other with the aftertreatment member 30 interposed therebetween, the sheets are less likely to deviate from each other, and can be manufactured in a state of covering the aftertreatment member 30.

In the bonding portion forming step S120, the bonding portion is preferably provided such that the thickness of the bonding portion is smaller than the thickness of the post-treatment member. The post-treatment member 30 and the adhesive portion 50 are both disposed on the non-skin-surface side T2 of the back sheet 22, and protrude from the non-skin-surface side T2 of the back sheet 22. Since the thickness of the post-treatment member 30 is thicker than the thickness of the adhesive portion 50, the region of the cover sheet 40 overlapping the post-treatment member 30 bulges with respect to the region of the cover sheet 40 overlapping the adhesive portion 50. Since a part of the cover sheet 40 bulges, the cover sheet 40 is easily peeled off from the back sheet 22, and the operability is improved.

The present invention has been described in detail using the above embodiments, but 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 in a modified form and a modified form without departing from the spirit and scope of the present invention as defined in the appended claims. Accordingly, the description of the present invention is intended for illustrative purposes, and is not intended to limit the present invention in any way.

In the modification, a plurality of adhesive portions 50 are arranged at intervals in the front-rear direction, and the pitch of the adhesive portions 50 in the front-rear direction L is preferably shorter than the length of the post-treatment member 30 in the front-rear direction. The main body 20 is easily bent by the interval between the adhesive parts 50, so that the main body 20 is more easily rolled up. In another embodiment, a plurality of adhesive portions 50 are arranged at intervals in the width direction W, and the pitch in the width direction W of the adhesive portions 50 is preferably shorter than the length in the width direction of the post-treatment member 30. The main body 20 is easily bent by the interval between the adhesive parts 50, so that the main body 20 is more easily rolled up.

In the modification of embodiment 1, the main body 20 preferably has a pair of hip flaps extending outward in the width direction from the absorbent core 23 and disposed so as to face the hips of the wearer in use. The main body 20 is preferably folded at a 3 rd fold line as a base point, and the 3 rd fold line is arranged at a distance from a pair of fold lines (FW) along the front-rear direction. That is, in the structure in which the absorbent article is rolled up in the front-rear direction L, preferably, 3 or more folds extending in the width direction are formed. The absorbent article having hip flaps is generally an absorbent article for night use, and the length of the absorbent article in the front-rear direction is relatively long. An absorbent article having a long length in the front-rear direction can be folded with 3 or more folds as the base points. The hip flap extends outward in the width direction than the absorbent core when worn, and is difficult for body fluid such as menstrual blood to adhere thereto. By performing the operation of rolling up the main body portion while contacting the hip flaps, the absorbent article 1 can be rolled up without soiling the hands. The length in the width direction W of the rear region S3 provided with the hip flap is longer than the length in the width direction of the central region S2. Thus, the user can roll up from the front side region, and the entire region in the width direction of the rolled up portion can be covered with the buttock flap to which body fluid is not attached, and the user can easily discard the diaper cleanly.

Industrial applicability

According to this aspect, an absorbent article that can be cleanly discarded in a state of being rolled up by the post-treatment member can be provided.

Claims

1. An absorbent article, comprising:

a front-rear direction;

a width direction orthogonal to the front-rear direction;

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

a post-treatment member disposed on the non-skin surface side of the main body portion and having a hook member protruding toward the non-skin surface side,

in the state where the main body is rolled up in the width direction, the post-treatment member is joined to the main body, so that the main body can be discarded in the rolled up state,

the main body is configured to be foldable with a width fold extending in the width direction and a pair of front and rear folds extending in the front and rear direction and arranged at intervals in the width direction as base points,

the pair of front and rear folds has: a 1 st front-back crease located at one end side in the width direction of the absorbent core; and a 2 nd front-rear fold line located on the other end side in the width direction of the absorbent core,

The main body portion has a curved base portion configured to allow the main body portion to be curved in a thickness direction, and a pair of wings extending outward in the width direction than the absorbent core and folded on a non-skin side of a wearing article when in use,

the bending base point part has a 1 st bending base point part arranged in a 1 st region between the 1 st front and rear folds and the one end of the absorbent core,

after the main body is folded about the width fold as a base point, one of the pair of front and rear folds is folded about the base point, and then the main body is rolled up in the width direction, whereby the post-treatment member is bonded to the surface of the main body, and the rolled state of the main body is maintained.

2. The absorbent article of claim 1, wherein,

the 1 st bending base point portion is disposed at a position outside the outer end of the post-treatment member in the width direction.

3. The absorbent article according to claim 1 or 2, wherein,

the bending base point portion has a 2 nd bending base point portion disposed in a 2 nd region between the 2 nd front and rear folds and the other end of the absorbent core.

4. The absorbent article of claim 3, wherein,

the 2 nd bending base point portion is disposed at a position outside the outer end of the post-treatment member in the width direction.

5. The absorbent article according to claim 1 or 2, wherein,

the pair of front and rear creases are creases for folding the main body portion so that skin surface sides of the main body portion face each other.

6. The absorbent article according to claim 1 or 2, wherein,

a main body adhesive portion is disposed in a region extending in the width direction from the flap, and the main body adhesive portion is disposed in a region overlapping the absorbent core.

7. The absorbent article of claim 6, wherein,

the other of the pair of wings is joined to the main body adhesive portion in a state where the main body portion is rolled up.

8. The absorbent article according to claim 1 or 2, wherein,

the curved base point portion has an end edge curved base point portion disposed at a position outside the 1 st region in the width direction.

9. The absorbent article according to claim 1 or 2, wherein,

the bending base point portion is constituted by at least any one of the following portions: a core compression unit configured to compress at least the absorbent core in a thickness direction; a unit area weight changing section formed by making the unit area weight of the absorbent material constituting the absorbent core or the unit area weight of the fibers constituting the surface sheet different from the surrounding; an end edge of a cover sheet disposed between the absorbent core and the surface sheet; and a sheet compression unit configured to compress at least the surface sheet in a thickness direction.

10. The absorbent article according to claim 1 or 2, wherein,

the pair of curved base points are provided at intervals in the front-rear direction, and the pair of curved base points are arranged on the same virtual line extending along the front-rear direction.

11. The absorbent article according to claim 1 or 2, wherein,

the surface sheet has a plurality of concave portions recessed in the thickness direction,

the concave portions are provided in plurality at intervals in the width direction.