WO2019044965A1

WO2019044965A1 - Absorbent article

Info

Publication number: WO2019044965A1
Application number: PCT/JP2018/032105
Authority: WO
Inventors: 涼子栗原
Original assignee: 大王製紙株式会社
Priority date: 2017-08-30
Filing date: 2018-08-30
Publication date: 2019-03-07
Also published as: JP6396553B1; JP2019041868A

Abstract

The objective of the present invention is to prevent peeling of a side sheet (7) from both end portions, in a longitudinal direction, of edges on an absorbent article center side thereof when the absorbent article is worn. In both end portions in the longitudinal direction of a sanitary napkin (1) in which an adhered portion (8) is provided along the entire length in the longitudinal direction, in a position separated from a side edge in a sideways direction on a napkin center side of the side sheet (7), an angle α formed between a straight line (S) joining an end point (A), in the longitudinal direction, of the side edge on the napkin center side of the side sheet (7) and an end point (B), in the longitudinal direction, of the side edge on the napkin center side of the adhered portion (8) and a longitudinal direction line (L) of the sanitary napkin (1) is at least equal to 65°.

Description

Absorbent articles

The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, etc. More specifically, the present invention prevents peeling from the end of a side sheet disposed along the longitudinal direction on both sides of the skin side. Therefore, the present invention relates to an absorbent article in which the outlines at both ends in the longitudinal direction are provided with asperities.

Conventionally, cotton-like pulp or the like is used as the absorbent article between a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated non-woven fabric and a liquid-permeable surface sheet such as a non-woven fabric or a liquid-permeable plastic sheet. It is known that an absorbent body is interposed and side sheets are disposed along the front-rear direction on both sides on the skin side.

Many improvements have been made to this type of absorbent article to prevent deflection of the end of the absorbent article at the time of wearing and to improve the wearing feeling, for example, as disclosed in Patent Document 1 below. An absorbent article 50 (FIG. 7) in which the outline of the longitudinal edge is a wavy line, or a bay in which the outline of the longitudinal edge bulges outward as disclosed in, for example, Patent Document 2 below. There is an absorbent article 60 (FIG. 8) or the like consisting of curves.

JP, 2010-115558, A JP, 2013-176412, A

However, in the

absorbent articles

50 and 60 described in

Patent Documents

1 and 2 described above, as shown in FIGS. 7 and 8, the end portions in the front-rear direction at the side edge of the absorbent article on the center side of the

side sheets

51 and 61. Since the 52 and 62 are formed in a sharp pointed shape, the

side sheets

51 and 61 are peeled off from the

sharp ends

52 and 62 by rubbing with the skin surface when the

absorbent article

50 or 60 is attached. There was a risk of leakage of the body fluid and deterioration of the wearing feeling.

Then, the main subject of this invention is providing the absorbent article which prevented that a side sheet peels from the both ends of the longitudinal direction in the side edge of an absorbent article center side at the time of mounting | wearing of an absorbent article.

In order to solve the above-mentioned subject, as the present invention concerning Claim 1, in the absorptive article by which the side sheet was arranged along with the longitudinal direction in the both sides by the side of skin, respectively,
Adhesive parts are provided over the entire length in the longitudinal direction at positions spaced apart laterally from the side edge of the absorbent article on the center side of the side sheet, and the side portions are provided at both longitudinal ends of the absorbent article. An angle formed by a straight line connecting the longitudinal end point of the side edge of the absorbent article on the central side of the absorbent article and the longitudinal end point of the side edge of the absorbent article on the central side of the adhesive portion and the longitudinal direction of the absorbent article. An absorbent article is provided, characterized in that α is formed at 65 ° or more.

In the invention according to the first aspect, the end points in the longitudinal direction at the side edges of the absorbent article on the center side of the absorbent sheet at the longitudinal end portions of the absorbent article, and the absorbent article center side on the adhesive portion. An angle α between the straight line connecting the longitudinal end points of the edge of the and the longitudinal line of the absorbent article is set to 65 ° or more. That is, the longitudinal edge of the side sheet portion extending to the center side of the absorbent article from the bonded portion of the side sheet is not formed in a sharp acute-angled shape. For this reason, at the time of mounting | wearing of an absorbent article, even if the longitudinal direction both ends of a side sheet rub with a skin surface, it is hard to exfoliate, and it can prevent that a leak of bodily fluid and a mounting feeling deteriorate.

According to a second aspect of the present invention, there is provided the absorbent article according to the first aspect, wherein the angle α is formed at an angle larger than 90 °.

In the invention according to the second aspect, by forming the angle α at an angle larger than 90 °, both end portions in the longitudinal direction at the side edge at the center side of the absorbent article of the side sheet are formed obtusely, Since the end point of the bonding portion is located on the outer side in the longitudinal direction than the end point of the sheet, and the end point of the side sheet is disposed at a recessed position inward, peeling from the end point of the side sheet can be prevented more reliably. It will be.

As the present invention according to claim 3, the absorbent article according to any one of

claims

1 and 2, wherein the side sheet has a non-adhesion portion between the side edge on the center side of the absorbent article and the adhesive portion. Is provided.

In the invention according to the third aspect, in order to reliably block body fluid flowing laterally on the surface of the liquid-pervious surface sheet by the side sheet, the side sheet is bonded from the side edge at the center side of the absorbent article. There is a non-adhesive part between the parts. In the side sheet provided with such a non-adhered part, since it becomes easy to exfoliate from the longitudinal direction both ends by the side of an absorptive article center, it is especially effective to have the structure concerning the present invention as a means to prevent this. .

According to a fourth aspect of the present invention, the outlines at both ends in the longitudinal direction of the absorbent article are formed in a concave shape which bulges inward at a portion where the side edge on the absorbent article center side of the side sheet is located An absorbent article according to any one of claims 1 to 3 is provided.

In the invention according to the fourth aspect, the outline of the both ends in the longitudinal direction of the absorbent article is formed in a concave shape which bulges inward at a portion where the side edge on the absorbent article center side of the side sheet is located Therefore, both end points in the longitudinal direction at the side edge on the center side of the absorbent article of the side sheet are disposed at a position recessed inward from the bonding portion, and peeling from the end can be more reliably prevented.

According to a fifth aspect of the present invention, between the side sheets on both sides, the outline of the absorbent article is the outer side in the longitudinal direction from the end point in the longitudinal direction of the side edge on the absorbent article center side of the side sheets. The absorbent article according to any one of claims 1 to 4, which is formed so as to protrude from the surface, and a relatively stiffened high-rigidity region is formed in the protruded portion.

In the invention according to the fifth aspect, in the relatively stiffened high rigidity region such as the entire periphery seal portion of the absorbent article, the outline of the absorbent article is between the side sheets on both sides, Since the side sheet at the side edge of the absorbent article on the center side protrudes to the outside in the longitudinal direction from the end point in the longitudinal direction, pressure directed from both sides in the width direction such as leg pressure acts When it does, it can prevent that the both ends of the longitudinal direction in the side edge by the side of the absorbent article by the side of an absorptive article are pushed up to the above-mentioned high rigidification area, and it becomes easy to exfoliate.

As described above in detail, according to the present invention, when the absorbent article is attached, it is possible to reliably prevent peeling of the side sheet at the center edge of the absorbent article from the both ends in the longitudinal direction.

It is a partially broken development view of the sanitary napkin 1 according to the present invention. It is an II-II arrow line view of FIG. It is an enlarged view of the back end in the side edge by the side of the napkin center of the side sheet 7, and its neighborhood. It is an expanded view of the sanitary napkin 1 which concerns on a modification. The sanitary napkin 1 which concerns on a modification is shown, (A) is an enlarged plan view of the longitudinal direction edge part, (B) is a BB arrow directional view of (A). (A) is an enlarged plan view of an end portion in the longitudinal direction, and (B) is a view taken along the line B-B in (A). It is an expanded view which shows the conventional sanitary napkin 50. As shown in FIG. It is an expanded view which shows the conventional sanitary napkin 60. As shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Basic configuration of sanitary napkin 1]
The sanitary napkin 1 according to the present invention, as shown in FIGS. 1 and 2, has a liquid-permeable back sheet 2 made of a polyethylene sheet, a polypropylene sheet, etc. An absorbent body 4 comprising a liquid surface sheet 3 and cotton-like pulp or synthetic pulp interposed between the both

sheets

2 and 3, and the absorbent body 4 for improving shape retention and diffusion of the absorbent body 4 And a

side sheet

7, 7 disposed along the longitudinal direction on each side of the skin contact surface side. Further, at the both end edges of the napkin 4 in the longitudinal direction of the napkin, the outer edges of the liquid-impervious backsheet 2 and the liquid-permeable topsheet 3 are adhesive such as hot melt in the predetermined area. The liquid-impervious back sheet 2 and the side sheet 7 which are joined together by bonding means such as heat sealing, ultrasonic sealing, etc., and which extend laterally beyond the side edges of the absorber 4 at the side edges thereof Are bonded by an adhesive such as hot melt or a bonding means such as a heat seal or an ultrasonic seal, and an outer peripheral flap portion where the absorber 4 does not exist is formed on the outer peripheral.

Hereinafter, the structure of the sanitary napkin 1 will be described in more detail,
The liquid-impervious back sheet 2 is a sheet material having at least water blocking properties such as an olefin-based resin sheet such as polyethylene or polypropylene, etc. In addition to this, a laminated non-woven fabric obtained by laminating non-woven fabric on polyethylene sheet etc. A non-woven fabric sheet (in this case, a liquid-impervious back sheet is composed of the waterproof film and the non-woven fabric) can be used after the liquid-imperviousness is substantially ensured by interposing the waterproof film. In recent years, it has tended to use what has moisture permeability from a viewpoint of muzzle prevention. This water-impervious and moisture-permeable sheet material is a microporous sheet obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in a uniaxial or biaxial direction. It is.

Next, a non-woven fabric is suitably used as the liquid-permeable top sheet 3. The material fibers constituting the non-woven fabric can be, for example, synthetic fibers such as olefins, polyesters, polyamides, etc. such as polyethylene or polypropylene, regenerated fibers such as rayon or cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a meltblown method, a needle punch method or the like can be used. Among these processing methods, the spun lace method is superior in flexibility, the spun bond method is superior in drapability, and the thermal bond method and air through method are superior in bulkiness and high compression recovery. In addition, composite fibers such as core-sheath fibers, side-by-side fibers, split fibers, etc. in which fibers having a high melting point are cored and fibers having a low melting point are sheathed can be used.

The absorbent 4 interposed between the liquid-impervious backsheet 2 and the liquid-permeable topsheet 3 is, for example, one obtained by mixing a highly water-absorbent resin in the pulp, or mixed with chemical fibers in the pulp. And those mixed with a super absorbent resin are used. As shown in the figure, it is desirable that the absorber 4 be surrounded by the covering sheet 5 in order to maintain shape and diffuse menstrual blood etc. promptly and to prevent reversion of menstrual blood etc. once absorbed. Examples of the pulp include cellulose fibers obtained from wood, such as melt pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than the hardwood pulp functions more It is suitably used in terms of price. In addition, an air-laid absorbent body which can reduce the bulk, or a polymer sheet formed by arranging a highly water-absorbent resin between two non-woven fabric layers may be used as the absorbent body 4.

In addition, synthetic fibers may be mixed in the absorber 4. Examples of the synthetic fibers include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, copolymers of these, and the like. It may be a mixture. In addition, composite fibers such as core-sheath fibers, side-by-side fibers, split fibers, etc., in which fibers having a high melting point are cored and fibers having a low melting point are sheathed may be used. In the case of a hydrophobic fiber, it is desirable to use the synthetic fiber surface-treated with a hydrophilizing agent so as to have an affinity for body fluid.

Examples of the superabsorbent polymer include crosslinked polyacrylates, self-crosslinked polyacrylates, saponified acrylic acid ester-vinyl acetate copolymer crosslinked products, crosslinked isobutylene / maleic anhydride copolymers, Examples thereof include crosslinked polysulfonates and partially crosslinked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, acrylic acid or acrylate based ones excellent in water absorption amount and water absorption speed are preferable. The highly water-absorbent resin having the water absorption performance can adjust the water absorption capacity and the water absorption speed by adjusting the crosslink density and the crosslink density gradient in the production process.

As in this example, in the case where the encapsulation sheet 5 surrounding the absorber 4 is provided, as a result, the encapsulation sheet 5 intervenes between the liquid-permeable surface sheet 3 and the absorber 4. When the covering sheet 5 is made of crepe paper, the covering sheet 5 having excellent absorbability rapidly diffuses the body fluid, and prevents the reversion of menstrual blood and the like.

[Side sheet 7]

Side sheets

7, 7 are provided on both sides of the skin contact surface side of the sanitary napkin 1 along the longitudinal direction and over substantially the entire length of the napkin 1. In the sanitary napkin 1, the

side sheets

7, 7 are extended laterally, and the liquid-impervious back sheet 2 also extended laterally so that the absorbent body 4 is formed on both sides of the main body portion. While forming the flap part which does not intervene, the wing-like flaps W and W which project outside are formed by a part of said side sheet 7 extended sideways, and a part of impervious liquid back sheet 2 It is done. The wing-shaped flaps W, W are folded back at the fold line RL (FIG. 1) at the proximal end so as to wrap the crotch portion of the undergarment at the time of wearing. By sticking the anti-slip adhesive layer (not shown) provided on the outer surface of the sheet 2 on the outer surface of the undergarment, it is intended to prevent the displacement with the undergarment.

A water repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used as the side sheet 7 from the viewpoint of the function to be emphasized. For example, if importance is attached to the function of preventing menstrual blood and vaginal discharge from permeating, or enhancing the feel of the touch, a water repellent treatment coated with a silicone, paraffin or alkylchromic chloride water repellent etc. It is desirable to use a non-woven fabric. Also, if emphasis is placed on the absorbability of the wing-shaped flap W, such as menstrual blood, a method of causing a compound having a hydrophilic group, for example, an oxidized product of polyethylene glycol, etc. to coexist in the production process of synthetic fiber Treated with a metal salt such as stannic chloride, and the surface is partially dissolved to make the surface porous and deposit metal hydroxide, etc. to make the synthetic fiber swell or porous, and apply capillary action to make it hydrophilic It is desirable to use a hydrophilic treated nonwoven fabric given In order to achieve fusion with the liquid-permeable top sheet 3, it is preferable to blend synthetic fibers in the side sheet 7.

The widthwise inner side of the side sheet 7 is, as shown in FIGS. 1 and 3, disposed on the skin contact surface side of both sides of the liquid permeable top sheet 3, these side sheets 7 and liquid permeable liquid The elastic surface sheet 3 is joined at the bonding portion 8 provided in these laminated portions. Specifically, the side sheet 7 is a bonding portion 8 provided along the entire length in the longitudinal direction at a position separated by a predetermined distance laterally from the side edge of the side sheet 7 on the center side of the napkin. It is joined to the liquid-permeable top sheet 3.

The side sheet 7 has a non-adhesion portion 9 which is not joined to the liquid-permeable surface sheet 3 over the entire length in the longitudinal direction of the sanitary napkin 1 between the side edge at the central side of the napkin and the adhesive portion 8. It has become. That is, the portion of the side sheet 7 on the napkin center side from the bonding portion 8 is not bonded to the liquid-permeable top sheet 3 over the entire surface, but only laminated on the skin-contacting surface side of the liquid-permeable top sheet 3 It is arranged in the state of.

The bonding portion 8 may be formed with a predetermined width (for example, about 1 to 10 mm) not reaching the side edge of the sanitary napkin 1 as in the illustrated example, or a range extending over the side edge of the sanitary napkin 1 It may be formed in The adhesive portion 8 can be formed by applying a hot melt adhesive by a suitable method such as a spray, a slot, or a spiral.

The non-adhesive portion 9 is formed along the side edge on the napkin center side of the side sheet 7 so as to have substantially the same width over the entire length of the sanitary napkin 1. The width dimension thereof should be 0.5 to 5 mm, preferably 1 to 3 mm.

The side sheet 7 is, as shown in FIG. 3, longitudinal end points A of the side edges of the side sheet 7 at the central side of the napkin and napkins of the bonding portion 8 at each of both longitudinal end portions of the sanitary napkin 1. An angle α between a straight line S connecting longitudinal end points B at the side edge on the central side and the longitudinal direction line L of the sanitary napkin 1 is 65 ° or more, preferably 65 ° to 160 °, more preferably 65 ° It is formed at about 120 °, particularly preferably at 90 ° to 120 °. The “napkin center side” is a side closer to the longitudinal center line CL of the sanitary napkin 1, as shown in FIG.

The angle α is an angle formed by a straight line S connecting the end points A and B and a longitudinal line L passing through the side edge of the side sheet 7 that intersects the center side of the napkin and the side sheet 7 It is an angle formed on the arranged side.

By forming the angle α at 65 ° or more, the longitudinal end edge of the non-adhesive portion 9 of the side sheet 7 is not formed in a sharp acute shape with respect to the longitudinal line L of the sanitary napkin 1 . For this reason, it can prevent that the longitudinal direction both ends of the side sheet 7 peel by rubbing with a skin surface at the time of mounting | wearing of the sanitary napkin 1. FIG. On the other hand, in the conventional

absorbent articles

50 and 60, as shown in FIGS. 7 and 8, since the angle α is formed at an angle smaller than 23 ° and 63 °, such as 65 °, adhesion is achieved. The length of the non-adhered portion of the

side sheets

51 and 61 extending outward in the longitudinal direction from the end point of the portion is too long, and the side sheet 7 is easily peeled off from the extended portion.

The outline of the side sheet 7 other than the side edge at the center side of the napkin substantially coincides with the outline of the sanitary napkin 1. That is, the side sheets 7 are laminated on the skin sides of the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 at the front and rear end portions of the sanitary napkin 1 and extend to the front and rear end edges of the sanitary napkin 1 At the same time, on both sides of the sanitary napkin 1, it is laminated on the skin side of the liquid-impervious back sheet 2 and extends to the side edge of the sanitary napkin 1.

In order to form a straight line S connecting the end point A of the side sheet 7 and the end point B of the adhesive portion 8 at a predetermined angle, as shown in FIG. 3, the outlines of the front and rear ends of the sanitary napkin 1 are It can be formed by forming in a predetermined uneven shape. Specifically, as the shape of the outline of both ends in the longitudinal direction of the sanitary napkin 1, a recess is provided by bulging inward at least at a portion where the side edge of the side sheet 7 on the napkin center side is positioned. It can be formed into a shape. The recess 10 is formed in a range including the end point A in the longitudinal direction at the side edge of the side sheet 7 on the napkin center side and the end point B in the longitudinal direction at the side edge of the napkin center side of the bonding portion 8 Preferably, the end point A of 7 is provided at a position closer to the top of the recess 10 than the end point B of the bonding portion 8. The recess 10 may be provided only in the portion where the end point A of the side sheet 7 is located as shown in FIG. 1 or may be provided in other portions although not shown.

For example, when the angle α is formed at 90 °, the outline of the longitudinal edge of the sanitary napkin 1 is at least the side edge of the napkin center side of the side sheet 7 and the side of the adhesive center 8 of the adhesive portion 8 In the portion where the edge is located, it is formed in a straight line substantially orthogonal to the longitudinal direction line L of the sanitary napkin 1, and the end point A of the side sheet 7 and the end point B of the adhesive portion 8 are aligned in the width direction of the sanitary napkin 1 Will be placed at.

Further, when the angle α is formed at an angle larger than 90 °, as shown in FIG. 4, the end point B of the bonding portion 8 is positioned on the outer side in the longitudinal direction than the end point A of the side sheet 7 Since the end point A of the side sheet 7 is disposed at a recessed position inward, peeling of the side sheet 7 from the end point A can be prevented more reliably. In other words, by forming the angle α at an angle larger than 90 °, the end point A of the side sheet 7 is positioned on the inner side in the longitudinal direction from the end point B of the adhesive portion 8 and therefore contacts the skin surface at the time of wearing. Even if it rubs, it is firmly pressed at the end point B of the bonding portion 8, and it becomes difficult to cause peeling from the end point A of the side sheet 7.

The angle α can be adjusted by adjusting the radius or depth of the recess 10 provided corresponding to the end point A of the side sheet 7.

An angle α between the straight line S and the longitudinal line L is formed at a predetermined angle at both the front end and the rear end of the side sheet 7 in the longitudinal direction. By this, peeling of the side sheet 7 can be prevented at both the front end and the rear end of the side sheet 7. The angle α may be substantially the same angle at the front end and the rear end, or may be formed at different angles within the predetermined range described above.

As shown in FIG. 5A, between the side sheets 7 on both sides, the outline of the sanitary napkin 1 is longer than the end point A in the longitudinal direction of the side edge of the side sheet 7 on the center side of the napkin. The entire periphery of the sanitary napkin 1 is formed by, for example, thermocompression bonding of a flap portion in which the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 are directly laminated to the protruding portion. It is preferable that a relatively high rigidity region 11 with relatively high rigidity such as a seal portion is formed, and the high rigidity region 11 is not formed inward in the longitudinal direction from the end point A. That is, when a line X connecting the end points A and A of the left and right side sheets 7 is drawn on each of the front end side and the rear end side of the sanitary napkin 1, the high rigidity is obtained between the

side sheets

7 and 7 on both sides. It is preferable that the passivation region 11 be provided on the outer side in the longitudinal direction from the line X and not provided on the inner side in the longitudinal direction from the line X. Thereby, as shown in FIG. 5 (B), when receiving leg pressure from both sides in the width direction, the side sheet 7 which is not made highly rigid without being affected by the highly rigid region 11, Since the portion between 7 bends and absorbs pressure from both sides, the non-adhered portion 9 of the side sheet 7 is not pushed up, and the laminated state on the liquid-permeable surface sheet 3 can be maintained. Peeling can be prevented. On the other hand, as shown in FIG. 6A, in the conventional absorbent article 60, when drawing a line X connecting the end points 62, 62 of the left and right side sheets 61, the side sheets 61 on both sides, Since the high rigidity region 63 provided between the two 61 is located on the line X, as shown in FIG. 6B, when receiving leg pressure from both sides in the width direction, both sides Is pushed up to the upper side of the high rigidity region 63, and the end point 62 of the side sheet 61 protrudes to the skin side, so it becomes easy to peel off from this end point 62.

In order to manufacture the said sanitary napkin 1, it can carry out by the following processes. The absorber 4 is disposed on the upper surface of the liquid-impervious backsheet 2 drawn from the raw fabric roll at a predetermined interval. After laminating the liquid-permeable surface sheet 3 drawn from the raw fabric roll on the upper surface thereof, bonding portions 8 are provided at predetermined positions on the outer surface of the liquid-permeable surface sheet 3 and drawn out from the raw fabric roll. The

side sheets

7, 7 are disposed on both sides while being adhered to the adhesive portion 8, respectively, or the

adhesive portions

8, 8 are provided at predetermined positions of the liquid-permeable surface sheet 3 drawn out from the original fabric roll in advance. A liquid-pervious surface sheet 3 and a side-sheet 7 which are integrally joined to both sides of the liquid-pervious surface sheet 3 while bonding the

side sheets

7 and 7 drawn out from a raw fabric roll to the bonding portion 8 respectively; 7 is disposed on the upper surface of the absorber 4. After that, the liquid-impervious backsheet 2, the liquid-permeable topsheet 3 and the side sheets 7 are integrally cut along the outline of the sanitary napkin 1.

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impermeable back sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorbent body, 5 ... Encapsulation sheet, 7 ... Side sheet, 8 ... Bonding part, 9 ... Non-bonding part, 10 ... recessed part

Claims

In an absorbent article in which side sheets are disposed along the longitudinal direction on both sides of the skin side,
Adhesive parts are provided over the entire length in the longitudinal direction at positions spaced apart laterally from the side edge of the absorbent article on the center side of the side sheet, and the side portions are provided at both longitudinal ends of the absorbent article. An angle formed by a straight line connecting the longitudinal end point of the side edge of the absorbent article on the central side of the absorbent article and the longitudinal end point of the side edge of the absorbent article on the central side of the adhesive portion and the longitudinal direction of the absorbent article. An absorbent article characterized in that α is formed at 65 ° or more.
The absorbent article according to claim 1, wherein the angle α is formed at an angle larger than 90 °.
The absorbent article according to any one of claims 1 and 2, wherein the side sheet is a non-adhered part between a side edge on the central side of the absorbent article and the adhesive part.
The outline of the longitudinal direction both ends of the absorbent article is formed in the shape of a hollow that bulges inward at the portion where the side edge on the absorbent article center side of the side sheet is located. The absorbent article as described in.
Between the side sheets on both sides, the outline of the absorbent article is formed projecting outward in the longitudinal direction from the end point in the longitudinal direction at the side edge on the absorbent article center side of the side sheet, and this projecting The absorbent article according to any one of claims 1 to 4, wherein a relatively high rigidity and high rigidity region is formed in the part.