JP6396553B1 - Absorbent articles - Google Patents

Abstract

A side sheet 7 is prevented from being peeled off from both ends in a longitudinal direction at an edge of the absorbent article at the center side when the absorbent article is mounted. Adhesive portions are provided over the entire length in the longitudinal direction at positions spaced sideways from the side edge of the napkin center side of the side sheet, and at each of both longitudinal ends of the sanitary napkin. A straight line S connecting a longitudinal end point A at the side edge of the napkin center side of the side sheet 7 and a longitudinal end point B at the side edge of the napkin center side of the adhesive portion 8, and a longitudinal line of the sanitary napkin 1 The angle α formed with L is 65 ° or more. [Selection] Figure 1

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, and the like, and in particular, prevents peeling from the end portions of side sheets disposed along the longitudinal direction on both side portions on the skin side. Therefore, it is related with the absorbent article which provided the unevenness | corrugation in the external shape line of a longitudinal direction both ends.

  Conventionally, as the absorbent article, between a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric and a liquid-permeable surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet, from cotton-like pulp or the like In addition, there is known a structure in which 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 the end of the absorbent article from being worn at the time of wearing and to improve the wearing feeling, for example, as disclosed in Patent Document 1 below, 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 exists an absorbent article 60 (FIG. 8) having a curved line.

JP 2010-115558 A JP2013-176612A

  However, in the absorbent articles 50 and 60 described in Patent Documents 1 and 2, as shown in FIGS. 7 and 8, front and rear end portions of the side edges of the side sheets 51 and 61 on the center side of the absorbent article. 52 and 62 are formed in an acutely sharp shape, and the side sheets 51 and 61 are peeled from the sharp end portions 52 and 62 by rubbing against the skin surface when the absorbent articles 50 and 60 are worn. It was easy to cause leakage of body fluids and deterioration of wearing feeling.

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

In order to solve the above-mentioned problem, as the present invention according to claim 1, in the absorbent article in which the side sheets are arranged along the longitudinal direction on both sides of the skin side,
Adhesive portions are provided over the entire length in the longitudinal direction at positions spaced laterally from the side edge of the absorbent article center side of the side sheet, and the side parts are provided at both ends in the longitudinal direction of the absorbent article. The angle formed by the straight line connecting the longitudinal end point of the side edge of the absorbent article central side of the sheet and the longitudinal end point of the side edge of the absorbent article central side of the adhesive portion, and the longitudinal line of the absorbent article α is formed at 65 ° or more ,
Between the side sheets on both sides, the outer shape line of the absorbent article is formed so as to protrude outward in the longitudinal direction from an end point in the longitudinal direction at the side edge of the absorbent article central side of the side sheet. There is provided an absorbent article characterized in that a relatively stiffened region having a relatively high rigidity is formed in a portion, and the stiffened region is not formed on an inner side in a longitudinal direction from the end point. The

The above in the first aspect of the present invention, the longitudinal end portions of their respective odor of the absorbent article Te, the longitudinal direction of the end point on the side edge of the absorbent article center side of the side sheet and an absorbent article center of the adhesive portion The angle α formed by the straight line connecting the end points in the longitudinal direction at the side edge and the longitudinal line of the absorbent article is set to 65 ° or more. That is, it is not formed in the acute-angle shape where the edge of the longitudinal direction of the side sheet part extended to the absorptive article center side from the adhesion part of the side sheet was sharp. For this reason, at the time of wearing of the absorbent article, even if both longitudinal ends of the side sheet are rubbed against the skin surface, it is difficult to peel off, and it is possible to prevent the leakage of body fluid and the feeling of wearing.

Further, in the present invention, the relatively stiffened region such as the all-round seal portion of the absorbent article is between the side sheets on both sides, and the outline of the absorbent article is the side sheet. The absorbent article is formed in a portion projecting outward in the longitudinal direction from the end point in the longitudinal direction at the side edge on the center side of the absorbent article, and the highly rigid region is not formed inward in the longitudinal direction from the end point. Therefore, when pressure directed inward from both sides in the width direction such as leg pressure is applied, both end points in the longitudinal direction at the side edge of the absorbent article center side of the side sheet are pushed up to the high rigidity region and easily peel off. Can be prevented.

  The present invention according to claim 2 provides the absorbent article according to claim 1, wherein the angle α is formed at an angle larger than 90 °.

  In the invention according to claim 2, by forming the angle α at an angle larger than 90 °, both end portions in the longitudinal direction of the side edge of the side sheet on the absorbent article central side are formed obtusely, Since the end point of the adhesive portion is located on the outer side in the longitudinal direction and the end point of the side sheet is recessed inward from the end point of the sheet, peeling from the end point of the side sheet can be prevented more reliably. It becomes like this.

  As the present invention according to claim 3, the absorbent sheet according to any one of claims 1 and 2, wherein the side sheet is a non-adhesive part between the side edge on the absorbent article central side and the adhesive part. Is provided.

  In the invention according to the third aspect, the side sheet is bonded from the side edge on the absorbent article center side in order to reliably block the body fluid flowing laterally on the surface of the liquid-permeable surface sheet by the side sheet. The part up to the part is a non-adhesive part. In the side sheet provided with such a non-adhesive part, it becomes easy to peel from both ends in the longitudinal direction on the absorbent article center side, and therefore it is particularly effective to provide the structure according to the present invention as a means for preventing this. .

  As an aspect of the present invention according to claim 4, the outlines at both ends in the longitudinal direction of the absorbent article are formed in a hollow shape that bulges inward at a portion where the side edge of 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 of claim 4, the outer shape of the absorbent article is formed in the shape of a hollow that bulges inward at the part where the side edge of the absorbent article center side of the side sheet is located. Therefore, both end points in the longitudinal direction of the side edge of the side sheet on the center side of the absorbent article are arranged at positions recessed inward from the adhesive portion, so that peeling from the end portion can be prevented more reliably.

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

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view of FIG. It is an enlarged view of the rear end part and its vicinity in the side edge of the napkin center side of the side seat. 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 a longitudinal direction edge part, (B) is the BB line arrow directional view of (A). A conventional sanitary napkin 60 is shown, (A) is an enlarged plan view of an end portion in the longitudinal direction, and (B) is a BB line arrow view of (A). It is an expanded view which shows the conventional sanitary napkin 50. It is an expanded view which shows the conventional sanitary napkin 60. FIG.

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

[Basic structure of sanitary napkin 1]
As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, or the like, and a permeate that quickly permeates menstrual blood or a cage. The liquid surface sheet 3, the absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3, and the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving the diffusibility. And wrapping sheet 5 made of crepe paper or non-woven fabric, and side sheets 7 and 7 disposed along the longitudinal direction on both sides on the skin contact surface side. Further, in the periphery of the absorbent body 4, the outer edges of the liquid-impervious back sheet 2 and the liquid-permeable surface sheet 3 are adhesives such as hot melt in predetermined areas at both end edges in the napkin longitudinal direction. The liquid-impervious back sheet 2 and the side sheet 7 which are joined by adhesive means such as heat seal, ultrasonic seal or the like, and which extend at the side edges of the absorber 4 to the side than the side edges of the absorbent body 4. Are bonded by an adhesive such as hot melt, or an adhesive means such as heat seal or ultrasonic seal, and an outer peripheral flap portion where the absorber 4 does not exist is formed on the outer periphery.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

  Next, the liquid-permeable surface sheet 3 is preferably a non-woven fabric. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and 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 melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and having high compression recovery properties. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can be used.

  The absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is, for example, a mixture of a superabsorbent resin in pulp or a mixture of chemical fibers in the pulp. In addition, those mixed with a superabsorbent resin are used. As shown in the figure, it is desirable that the absorbent body 4 is surrounded by the encapsulating sheet 5 in order to maintain the shape and quickly diffuse menstrual blood and prevent reversal of once absorbed menstrual blood and the like. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price. Moreover, as the absorbent body 4, an airlaid absorbent body that can reduce the volume, or a polymer sheet in which a superabsorbent resin is disposed between two nonwoven fabric layers may be used.

  The absorbent body 4 may be mixed with synthetic fibers. As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be a mixture. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.

  Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water absorption performance, the water absorption force and the water absorption speed can be adjusted by adjusting the crosslinking density and the crosslinking density gradient.

  When the encapsulating sheet 5 that surrounds the absorber 4 is provided as in this example, the encapsulating sheet 5 is interposed between the liquid-permeable surface sheet 3 and the absorber 4 as a result. When the encapsulating sheet 5 is made of crepe paper, the encapsulating sheet 5 having excellent absorbability diffuses body fluid quickly and prevents reversal of these menstrual blood and the like.

[Side seat 7]
Side sheets 7, 7 are provided on both sides of the sanitary napkin 1 on the skin contact surface side along the longitudinal direction and over the substantially entire length of the napkin 1. In the sanitary napkin 1, the side sheets 7, 7 extend laterally, and the liquid-impervious back sheet 2 that also extends laterally forms absorbent bodies 4 on both sides of the main body portion. A flap portion that does not intervene is formed, and wing-like flaps W, W that protrude outward are formed by a part of the side sheet 7 that extends laterally and a part of the liquid-impermeable back sheet 2. Has been. The wing-shaped flaps W, W are used by being folded outward at the fold line RL (FIG. 1) of the base end portion so that the crotch portion of the underwear is wound when worn, and the impermeable back surface of the wing-shaped flap W The anti-slip adhesive layer (not shown) provided on the outer surface of the sheet 2 is attached to the outer surface of the underwear, thereby preventing misalignment with the underwear.

  As the side sheet 7, a water-repellent nonwoven fabric or a hydrophilic nonwoven fabric can be used from the viewpoint of important functions. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric. Further, if importance is attached to the absorption of menstrual blood and the like in the wing-shaped flaps W, W, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, , By treating with a metal salt such as stannic chloride, partially dissolving the surface to make it porous, and depositing metal hydroxides to swell or make the synthetic fiber porous, applying capillary action to make it hydrophilic It is desirable to use a hydrophilic treated non-woven fabric provided with. In order to fuse the side sheet 7 with the liquid-permeable surface sheet 3, it is preferable to blend synthetic fibers.

  As shown in FIG. 1 and FIG. 3, the inner side in the width direction of the side sheet 7 is disposed on the skin contact surface side of both sides of the liquid-permeable surface sheet 3. The adhesive surface sheet 3 is joined at an adhesive portion 8 provided in these laminated portions. Specifically, the side sheet 7 is formed by an adhesive portion 8 provided over the entire length in the longitudinal direction at a position separated from the side edge of the napkin center side of the side sheet 7 by a predetermined distance from the side. The liquid-permeable surface sheet 3 is joined.

  The side sheet 7 includes a non-adhesive portion 9 that is not joined to the liquid-permeable surface sheet 3 over the entire length in the longitudinal direction of the sanitary napkin 1 from the side edge on the napkin central side to the adhesive portion 8. It has become. That is, the portion of the side sheet 7 closer to the center of the napkin than the adhesive portion 8 is not bonded to the liquid-permeable surface sheet 3 over the entire surface, but is only laminated on the skin contact surface side of the liquid-permeable surface sheet 3. It is arranged in the state of.

  The adhesive portion 8 may be formed with a predetermined width (for example, about 1 to 10 mm) that does not reach the side edge of the sanitary napkin 1 as shown in the drawing, or a range extending over the side edge of the sanitary napkin 1. You may form in. The adhesive portion 8 can be formed by applying a hot melt adhesive by an appropriate method such as spraying, slotting or spiraling.

  The non-bonding portion 9 is formed with a substantially equal width along the side edge of the side sheet 7 on the center side of the napkin over the entire length of the sanitary napkin 1. The width dimension is 0.5 to 5 mm, preferably 1 to 3 mm.

  As shown in FIG. 3, the side sheet 7 includes a longitudinal end point A at a side edge of the side sheet 7 on the center side of the napkin and a napkin of the adhesive portion 8 at both ends in the longitudinal direction of the sanitary napkin 1. The angle α formed by the straight line S connecting the longitudinal end points B at the central side edge and the longitudinal line L of the sanitary napkin 1 is 65 ° or more, preferably 65 ° to 160 °, more preferably 65 °. It is formed at ˜120 °, particularly preferably at 90 ° to 120 °. The “napkin central side” is a side close 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 a side edge on the napkin center side of the side sheet 7 intersecting the end point A, B. It is the angle formed on the side where it is placed.

  By forming the angle α at 65 ° or more, the longitudinal edge of the non-bonded 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, at the time of wearing the sanitary napkin 1, it is possible to prevent the longitudinal end portions of the side sheet 7 from being peeled off due to rubbing with the skin surface. On the other hand, in the conventional absorbent articles 50 and 60, as shown in FIGS. 7 and 8, the angle α is formed at 23 ° or 63 ° and an angle smaller than 65 °. The lengths of the non-adhesive portions of the side sheets 51 and 61 extending outward in the longitudinal direction from the end points of the portions are too long, and the side sheets 7 are easily peeled from the extended portions.

  In the side sheet 7, the outline other than the side edge on the napkin center side substantially coincides with the outline of the sanitary napkin 1. That is, the side sheet 7 is laminated on the skin side of the liquid-permeable surface sheet 3 and the liquid-impervious back sheet 2 at the front and rear ends of the sanitary napkin 1 and extends to the front and rear edges of the sanitary napkin 1. In addition, the both sides of the sanitary napkin 1 are laminated on the skin side of the liquid-impermeable back sheet 2 and extend to the side edges 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 bonding portion 8 at a predetermined angle, as shown in FIG. 3, outline lines at the front and rear ends of the sanitary napkin 1 are formed. It can be formed by forming it in a predetermined uneven shape. Specifically, the sanitary napkin 1 is recessed by providing a concave portion 10 that bulges inward as a shape of an outline at both ends in the longitudinal direction of the sanitary napkin 1 at least in a portion where the side edge of the side napkin on the napkin central side is located Can be formed. The concave portion 10 is formed in a range including a longitudinal end point A at a side edge on the napkin center side of the side sheet 7 and a longitudinal end point B at a side edge on the napkin center side of the adhesive portion 8. It is preferable that the end point A of 7 is provided closer to the top of the recess 10 than the end point B of the bonding portion 8. As shown in FIG. 1, the recess 10 may be provided only in a portion where the end point A of the side seat 7 is located, or may be provided in other portions, though not shown.

  For example, when the angle α is formed at 90 °, the outline of the longitudinal end edge of the sanitary napkin 1 is at least the side edge of the side sheet 7 on the napkin center side and the side of the adhesive portion 8 on the napkin center side. At the portion where the edge is located, the sanitary napkin 1 is formed in a straight line substantially orthogonal to the longitudinal direction line L, 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 in.

  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 from the end point A of the side sheet 7. Since the end point A of the side sheet 7 is disposed at the position recessed inward, the peeling from the end point A of the side sheet 7 can be more reliably prevented. 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, so that it contacts the skin surface during wearing. Even if they are rubbed, they are firmly pressed at the end point B of the bonding portion 8, and peeling starting from the end point A of the side sheet 7 is less likely to occur.

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

  Both the front end portion and the rear end portion in the longitudinal direction of the side seat 7 are formed with an angle α formed by the straight line S and the longitudinal line L at a predetermined angle. Thereby, 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 at the front end and the rear end, or may be formed at different angles as long as it is within the predetermined range.

  As shown in FIG. 5 (A), the outline of the sanitary napkin 1 is longer than the end point A in the longitudinal direction at the side edge of the side sheet 7 on the center side of the napkin, between the side sheets 7 on both sides. The sanitary napkin 1 is formed so as to protrude outward in the direction, and the entire circumference of the sanitary napkin 1 is formed by heating and pressing a flap portion in which the liquid-permeable top sheet 3 and the liquid-impermeable back sheet 2 are directly laminated. It is preferable that a relatively stiffened region 11 having a relatively high rigidity such as a seal portion is formed, and the stiffened region 11 is not formed on the inner side in the longitudinal direction from the end point A. That is, when the line X connecting the end points A of the left and right side seats 7 is drawn on each of the front end side and the rear end side of the sanitary napkin 1, the high rigidity is provided between the side seats 7 on both sides. It is preferable that the conversion region 11 is 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. Accordingly, as shown in FIG. 5 (B), when subjected to leg pressure or the like from both sides in the width direction, the side seat 7 that is not highly rigid without being affected by the highly rigid region 11, 7 is bent and absorbs pressure from both sides, so that the non-adhesive portion 9 of the side sheet 7 is not pushed up, and the state of being laminated on the liquid-permeable surface sheet 3 can be maintained. Peeling can be prevented. On the other hand, as shown in FIG. 6 (A), in the conventional absorbent article 60, when the line X connecting the end points 62, 62 of the left and right side sheets 61 is drawn, the side sheets 61 on both sides, Since the high-rigidity region 63 provided between 61 is positioned on the line X, as shown in FIG. 6B, when receiving leg pressure from both sides in the width direction, Is pushed up above the high-rigidity region 63, and the end point 62 of the side sheet 61 protrudes to the skin side.

  The sanitary napkin 1 can be manufactured by the following process. The absorber 4 is arranged at a predetermined interval on the upper surface of the liquid-impermeable back sheet 2 fed out from the raw roll. After laminating the liquid-permeable surface sheet 3 drawn from the original fabric roll on the upper surface, adhesive portions 8 and 8 were provided at predetermined positions on the outer surface of the liquid-permeable surface sheet 3 and drawn from the original fabric roll. While arranging the side sheets 7 and 7 on both sides while adhering to the adhesive part 8 respectively, or providing the adhesive parts 8 and 8 in advance at a predetermined position of the liquid-permeable surface sheet 3 drawn out from the raw roll, The liquid-permeable surface sheet 3 and the side sheet 7 that are integrated by bonding to both side portions of the liquid-permeable surface sheet 3 while adhering the side sheets 7 and 7 fed from the raw roll to the adhesive portion 8 respectively. 7 is disposed on the upper surface of the absorber 4. Thereafter, the liquid-impervious back sheet 2, the liquid-permeable front sheet 3, and the side sheet 7 are integrally cut along the outline of the sanitary napkin 1.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impervious back sheet, 3 ... Impervious surface sheet, 4 ... Absorber, 5 ... Encapsulating sheet, 7 ... Side sheet, 8 ... Adhesion part, 9 ... Non-adhesion part, 10 ... recess

Claims (4)

In the absorbent article in which side sheets are arranged along the longitudinal direction on both sides on the skin side,
Adhesive portions are provided over the entire length in the longitudinal direction at positions spaced laterally from the side edge of the absorbent article center side of the side sheet, and the side parts are provided at both ends in the longitudinal direction of the absorbent article. The angle formed by the straight line connecting the longitudinal end point of the side edge of the absorbent article central side of the sheet and the longitudinal end point of the side edge of the absorbent article central side of the adhesive portion, and the longitudinal line of the absorbent article α is formed at 65 ° or more ,
Between the side sheets on both sides, the outer shape line of the absorbent article is formed so as to protrude outward in the longitudinal direction from an end point in the longitudinal direction at the side edge of the absorbent article central side of the side sheet. An absorbent article characterized in that a relatively stiffened region having a relatively high rigidity is formed in a portion, and the stiffened region is not formed on an inner side in a longitudinal direction from the end point .   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 has a non-adhesive portion between a side edge on a central side of the absorbent article and the adhesive portion.   The outline of the longitudinal direction both ends of the said absorbent article is formed in the hollow shape which bulges inward in the part in which the side edge of the absorbent article center side of the said side seat is located. Absorbent article as described in 1.

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