WO2021220520A1

WO2021220520A1 - Absorbent article

Info

Publication number: WO2021220520A1
Application number: PCT/JP2020/020680
Authority: WO
Inventors: 健人梨子木; 泰一宮▲崎▼; 光宏出口
Original assignee: ユニ・チャーム株式会社
Priority date: 2020-04-30
Filing date: 2020-05-26
Publication date: 2021-11-04
Also published as: JP2021171581A; JP6802407B1; TW202142202A; CN115397378B; CN115397378A

Abstract

In this absorbent article, each of a left-right pair of leakproof gathers (601) capable of standing on a skin surface side comprises: an opposing part (722) in which at least a leakproof sheet extends from outside in the width direction toward the center in the width direction; a skin abutting part (712) in which the leakproof sheet is folded back outward in the width direction at an outer leakproof fold line in a position toward the center; a leakproof connecting part (732) in which the skin abutting part is connected to the opposing part; and a leakproof non-connecting part (742) which is positioned inward in the front-back direction from the leakproof connecting part, and in which the skin abutting part is not connected to the opposing part. The skin abutting part is positioned on the most skin surface side of the leakproof gathers in an expanded state of the absorbent article, and the leakproof connecting part is provided in a region larger than or equal to half of the total region in the front-back direction of a rear side region (R10) which extends between a front end edge (90F) of a fastening member and a rear end edge (1R) of the absorbent article. As such, the absorbent article can be worn such that the top of the outward folding leakproof gathers faces outward in the width direction.

Description

Absorbent article

The present invention relates to an absorbent article having leak-proof gathers standing on the wearer side.

Conventionally, as an absorbent article that absorbs excrement such as urine and feces of a wearer, an absorbent article having leak-proof gathers standing on the wearer side has been disclosed (for example, Patent Document 1). The leak-proof gather of Patent Document 1 is a portion in which the leak-proof sheet is folded toward the skin surface side based on a crease along the front-rear direction, and is a skin pad located on the skin surface side most in the stretched state of the absorbent article. contact portion (portion from the H _P in FIG. 1 of Patent Document 1 to the vertex), from the fold in the width direction extending outwardly facing portion which is disposed opposite to the skin-contacting portion in the extended state (Patent Document 1 It has a portion) from H _P to the standing point K, the in FIG. The apex of the skin contact portion is located outside the crease in the width direction. The leak-proof gather of Patent Document 1 is a so-called leak-proof gather that rises toward the skin surface toward the outside in the width direction with respect to the standing point and falls out.

When the wearing assistant wears such an absorbent article on the wearer, the wearer's waist is lifted, the rear waist area is laid below the waist, and then the front waist area is used to cover the wearer. The abdomen can be covered and the fastening member provided in the rear waist circumference area can be fastened to the front waist circumference area. However, for example, when a caregiver as a wearing assistant wears an absorbent article to an adult wearer, the caregiver lifts the wearer's waist and lays a back waist area below the waist. It's difficult. Therefore, for example, the absorbent article 100 can be worn by an adult wearer lying on his back by the wearing method shown in FIG. The wearing assistant first changes the position of the wearer. Specifically, the state of lying on the back is changed to the state of lying sideways. The wearing assistant folds the flap portion 110 extending outward in the width direction from the absorbent core in the absorbent article inward in the width direction, and lays the absorbent article 100 in the folded state on the buttocks side of the wearer ( 6 (a) and 6 (b)). Next, the wearing assistant returns the wearer's body position to his back and puts the wearer on the absorbent article 100 in the folded state (FIGS. 6 (c) and 6 (d)). When the wearer is on the absorbent article 100, the wearer's buttocks are on the folded flap 110. The mounting assistant pulls out the folded flap portion 110 by applying force (FIGS. 6 (e) and 6 (f)). Next, the wearing assistant can wear the absorbent article to the wearer by covering the wearer's abdomen with the front waist circumference area and fastening the fastening member 120 provided in the rear waist circumference area to the front waist circumference area.

Japanese Unexamined Patent Publication No. 2002-282302

The absorbent article of Patent Document 1 had the following problems. When the absorbent article is attached by the above-mentioned attachment method, the flap portion is pulled out under the body pressure of the wearer, so that the entire flap portion may not be pulled out. More specifically, the apex of the leak-proof gather is oriented outward in the width direction in the extended state. However, when the flap portion is folded back during the mounting process, the apex of the leak-proof gather may face inward in the width direction. Therefore, when the flap portion is pulled out, the apex of the leak-proof gather may not be pulled out due to body pressure. When worn, the apex of the leak-proof gather did not rise toward the outside in the width direction, and the original function of the leak-proof gather could not be exhibited.

The present invention has been made in view of such a problem, and provides an absorbent article that can be worn so that the apex of the leak-proof gather of the outer fall faces outward in the width direction.

The absorbent article according to one embodiment includes a front waistline area, a rear waistline area, an inseam area located between the front waistline area and the rear waistline area, and a front-rear direction from the front waistline area to the rear waistline area. An absorption core extending in the width direction orthogonal to the front-rear direction, straddling the inseam region, and extending to at least one of the front waist circumference region and the rear waist circumference region, and extending outward in the width direction from the absorption core. A pair of left and right protective members that are joined to the flap portion in the rear waist circumference area and can be fastened to the front waist circumference area, and a leak-proof elastic member, and can stand up on the skin surface side. With leak gathers. The leak-proof gathers are formed so that at least the leak-proof sheet extends from the outside in the width direction toward the center in the width direction and the leak-proof sheet is folded outward in the width direction starting from the leak-proof crease at the center position. The skin contact portion, the leak-proof joint portion in which the skin contact portion is joined to the facing portion, and the skin contact portion located inside the leak-proof joint portion in the front-rear direction, and the skin contact portion is the facing portion. It has a leak-proof non-joint that is not joined to. The skin contact portion is located on the skin surface side of the leak-proof gathers in the stretched state of the absorbent article. The absorbent article has a posterior region extending between the front edge of the fastening member and the trailing edge of the absorbent article. The leak-proof joint is provided in more than half of the entire area of the rear region in the front-rear direction.

FIG. 1 is a plan view of the absorbent article according to the embodiment as viewed from the skin surface side. FIG. 2 is a plan view showing a state in which the absorbent article shown in FIG. 1 is folded from the crease of the article. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. FIG. 4 is a cross-sectional view taken along the line BB shown in FIG. FIG. 5 is a cross-sectional view taken along the line CC shown in FIG. FIG. 6 is a diagram for explaining a method of mounting an absorbent article in the prior art.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.
The absorbent article according to one embodiment includes a front waistline area, a rear waistline area, an inseam area located between the front waistline area and the rear waistline area, and a front-rear direction from the front waistline area to the rear waistline area. An absorption core extending in the width direction orthogonal to the front-rear direction, straddling the inseam region, and extending to at least one of the front waist circumference region and the rear waist circumference region, and extending outward in the width direction from the absorption core. A pair of left and right protective members that are joined to the flap portion in the rear waist circumference area and can be fastened to the front waist circumference area, and a leak-proof elastic member, and can stand up on the skin surface side. With leak gathers. The leak-proof gathers are formed so that at least the leak-proof sheet extends from the outside in the width direction toward the center in the width direction and the leak-proof sheet is folded outward in the width direction starting from the leak-proof crease at the center position. The skin contact portion, the leak-proof joint portion in which the skin contact portion is joined to the facing portion, and the skin contact portion located inside the leak-proof joint portion in the front-rear direction, and the skin contact portion is the facing portion. It has a leak-proof non-joint that is not joined to. The skin contact portion is located on the skin surface side of the leak-proof gathers in the stretched state of the absorbent article. The absorbent article has a posterior region extending between the front edge of the fastening member and the trailing edge of the absorbent article. The leak-proof joint is provided in more than half of the entire area of the rear region in the front-rear direction. According to this aspect, since the leak-proof joint is provided in more than half of the entire area in the front-rear direction of the rear region, the skin contact portion is pulled out through the leak-proof joint when the flap portion is pulled out. It becomes easy to get rid of. Therefore, the skin contact portion can be pulled out, and the apex of the leak-proof gather that falls outward can be attached so as to face outward in the width direction.

According to a preferred embodiment, a plurality of the fastening members are provided at intervals in the front-rear direction. The absorbent article includes the front end edge of the fastening member located on the frontmost side of the plurality of fastening members and the rear end edge of the fastening member located on the rearmost side of the plurality of fastening members. Has a anchoring area extending between. The leak-proof joint is provided in more than half of the entire area of the fastening region in the front-rear direction. According to this aspect, when the mounting assistant pulls out the entire fastening member at the time of mounting, the skin contact portion is easily pulled out through the leak-proof joint portion. Therefore, the skin contact portion can be pulled out, and the apex of the leak-proof gather that falls outward can be attached so as to face outward in the width direction.

According to a preferred embodiment, the absorbent article extends along the anterior-posterior direction and is arranged in pairs across the widthwise center of the absorbent article prior to use. The absorbent articles are folded so that the skin surfaces of the articles face each other. At least a part of the leak-proof joint is arranged outside the article fold in the width direction in the unfolded state developed from the article fold as a base point. According to this aspect, when the flap portion is folded when worn, it may be folded from the crease of the article having a crease. When folded in this way, after the wearer is placed on the absorbent article, the flap portion is developed with the article fold as a base point. At the time of this deployment, the leak-proof joint can be deployed together with the flap portion, and the skin contact portion can be pulled out through the leak-proof joint. Therefore, the skin contact portion can be pulled out, and the apex of the leak-proof gather that falls outward can be attached so as to face outward in the width direction.

According to a preferred embodiment, the leak-proof crease is arranged outside the article fold in the width direction in the unfolded state. According to this aspect, when the flap portion is developed with respect to the crease of the article, the entire skin contact portion can be pulled out together with the flap portion.

According to a preferred embodiment, in the stretched state of the absorbent article, the apex of the skin contact portion is located outside the outer edge of the absorbent core in the width direction. According to this aspect, when the wearer is placed on the absorbent article after the wearer has been turned sideways during wearing, the position is generally adjusted so that the wearer's buttocks rest on the absorbent core. That is, it is difficult for the wearer's buttocks to ride on the outside of the absorption core in the width direction. Since the apex of the skin contact portion is located in the area where the wearer's body pressure is hard to be applied during the wearing process (the area outside the absorption core in the width direction), the skin contact is applied by the wearer's body pressure during the wearing process. It is possible to suppress the problem that the apex of the tangent part becomes difficult to expand.

According to a preferred embodiment, in the stretched state of the absorbent article, the leak-proof crease is located outside the width direction of the outer edge of the absorbent core, at least in the inseam area. According to this aspect, since the entire skin contact portion is arranged in the area where the body pressure of the wearer is hard to be applied during the wearing process (the area outside the absorption core in the width direction), the wearer during the wearing process. It is possible to suppress the problem that the skin contact portion becomes difficult to develop due to the body pressure of.

According to a preferred embodiment, it has a surface sheet arranged on the skin surface side of the absorption core. The leak-proof sheet covers the outer portion of the surface sheet and is joined to the surface sheet via a surface joint portion. The length of the leak-proof joint portion in the front-rear direction is longer than the length of the surface joint portion in the front-rear direction. According to this aspect, since the length of the leak-proof joint portion in the front-rear direction is relatively long, it is easy to deploy the leak-proof gathers that fall out when the flap portion is deployed. Further, since the length of the surface joint portion that joins the surface sheet and the leak-proof sheet in the front-rear direction is relatively short, the leak-proof gather is not pulled too much inward in the width direction, and the apex of the leak-proof gather is outside in the width direction. It is easy to install it so that it faces more, and it becomes easier to exert the original external gathering function.

According to a preferred embodiment, it has a pair of left and right second leak-proof gathers that are located inside the width direction of the leak-proof gathers and can stand up on the skin surface side. The second leak-proof gather includes a second skin contact portion located closest to the skin surface side in the second leak-proof gather, and a second facing portion arranged to face the second skin contact portion. It has a second leakage-proof joint portion to which the second skin contact portion and the second facing portion are joined. The apex of the second leakage-proof gather is located at the inner edge of the second skin contact portion. The length of the leak-proof joint portion in the front-rear direction is longer than the length of the second leak-proof joint portion in the front-rear direction. According to this aspect, since the length of the leak-proof joint portion in the front-rear direction is relatively long, it is easy to deploy the leak-proof gathers that fall out when the flap portion is deployed. On the other hand, the second leak-proof gather is a so-called inward-falling leak-proof gather, the apex of which is located at the inner edge of the second skin contact portion. Since the length of the second leak-proof joint portion in the front-rear direction is relatively short, it is difficult to follow when the flap portion is deployed as compared with the leak-proof gather. Therefore, the apex of the leak-proof gather of the outward fall can be mounted so as to face the outside in the width direction, and the apex of the leak-proof gather of the inward fall can be mounted so as to face the inward in the width direction. 2 It becomes easier to demonstrate the function of leak-proof gathers.

According to a preferred embodiment, the leak-proof joint is provided in the front waist circumference area. The length of the leak-proof joint portion provided in the front waist circumference region in the front-rear direction is ⅙ or more with respect to the length of the absorbent article in the front-rear direction. When wearing the absorbent article, pass the anterior girth area between the wearer's legs and cover the wearer's abdomen with the anterior girth area. At this time, the space between the wearer's legs becomes narrower, and the leak-proof gathers hit the legs, which may cause the leak-proof gathers to fall inward. However, since the length of the leak-proof joint provided in the front waistline area is long in the front-rear direction, even if the leak-proof gather hits the leg, the leak-proof gather that falls outward is suppressed from falling inward, and the leak-proof gather is prevented from falling. It can be mounted so that the apex of the leak-proof gather faces outward in the width direction.

(2) Embodiment of Absorbent Article The disposable diaper as an absorbent article according to the embodiment will be described below with reference to the drawings. The absorbent article may be a disposable diaper for adults or a disposable diaper for children. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratio of each dimension is different from the actual one. Therefore, the specific dimensions, etc. should be determined in consideration of the following explanation. In addition, there may be parts in which the relations and ratios of the dimensions of the drawings are different from each other.

FIG. 1 is a plan view of the absorbent article 1 according to the present embodiment as viewed from the skin surface side, and FIG. 2 is a plan view showing a state in which the absorbent article shown in FIG. 1 is folded from the crease of the article. It is a figure. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. FIG. 4 is a cross-sectional view taken along the line BB shown in FIG. FIG. 5 is a cross-sectional view taken along the line CC shown in FIG. The plan views shown in FIGS. 1 and 2 show an elongated state in which the absorbent article 1 is extended to a state in which wrinkles are not formed. The stretched state in the present invention is a state in which the absorbent article 1 is stretched to a state in which wrinkles are not formed. Further, the natural state in the present invention means that, in the case of the absorbent article 1 housed in the package, the absorbent article 1 is taken out from the package and has an atmosphere of 20 ° C. ± 2 ° C. and a relative humidity of 60% ± 5% RH. It is in a state of being left for 24 hours underneath. The absorbent article 1 of the present embodiment is a deployable adult absorbent article, but is not limited thereto. The absorbent article 1 may be an absorbent article for children.

The absorbent article 1 has a front-rear direction L and a width direction W that are orthogonal to each other. The anteroposterior direction L is defined by a direction extending to the front side of the body and the rear side of the body (direction extending to the front waist circumference area S1 and the rear waist circumference area S2). In other words, the anteroposterior direction L is a direction extending anterior-posteriorly in the deployed absorbent article 1. Further, the absorbent article 1 has a thickness direction T orthogonal to both the front-rear direction L and the width direction W. The thickness direction T extends to the skin surface side T1 toward the wearer side and the non-skin surface side T2 on the side away from the wearer. In the present specification, the "skin surface side" corresponds to the side facing the skin of the wearer during use. The "non-skin side" corresponds to the side that is turned away from the wearer's skin during use.

The absorbent article 1 has a front waist circumference area S1, a rear waist circumference area S2, and an inseam area S3. The front waist circumference area S1 faces the front side of the wearer's body during use. The rear waist circumference area S2 faces the rear side of the wearer's body during use. The inseam area S3 is located between the front waist area S1 and the rear waist area S2, and is arranged in the inseam of the wearer at the time of use. The inseam region S3 can be defined by the absorption core 30. Specifically, in the absorption core 30 having the constricted portion 33, the region where the constricted portion 33 of the absorption core 30 is formed becomes the region of the inseam region S3 in the front-rear direction L. In the absorption core 30 that does not have the constricted portion 33, the central region of the absorption core 30 divided into three equal parts in the front-rear direction is the region L in the front-rear direction of the inseam region S3. In the present embodiment, the front end edge of the constricted portion 33 of the absorption core 30 defines the boundary between the inseam area S3 and the front waist circumference area S1, and the rear end edge of the constricted portion 33 of the absorption core 30 is the inseam area S3 and the rear. The boundary of the waist circumference area S2 is defined.

The absorbent article 1 has at least an absorbent core 30. The absorption core 30 straddles the inseam area S3 and extends to at least one of the front waist area S1 and the rear waist area S2. The absorbent core 30 may be, for example, a laminate of absorbent materials containing ground pulp or a highly absorbent polymer (SAP), or a mixture thereof. As described above, the absorption core 30 is formed with a constricted portion 33 recessed in the width direction W in the inseam region. The length of the constricted portion 33 in the width direction W is shorter than the length of the portion of the absorption core other than the constricted portion 33 in the width direction W.

The absorbent article 1 has a skin sheet 10 located on the skin side T1 of the absorption core 30. The skin surface sheet may include a surface sheet 11, a side sheet 12, and a skin side core wrap 13. The surface sheet 11 has liquid permeability and may be arranged so as to cover at least the center of the absorption core 30 in the width direction W. The side sheet 12 is made of a general non-woven fabric, and may be made of a hydrophobic material or processed. The side sheet 12 may be arranged outside the center of the absorption core 30 in the width direction W so as to cover both side portions of the surface sheet 11 in the width direction W. The surface sheet 11 may form an inner leak-proof sheet 681 described later, and the side sheet 12 may form an outer leak-proof sheet 682 described later. The skin-side core wrap 13 is made of a non-woven fabric or tissue. In the modified example, the skin surface sheet 10 may have a second sheet arranged on the non-skin surface side of the surface sheet 11 and on the skin surface side of the skin side core wrap 13. The absorbent article 1 has a non-skin surface sheet 20 located on the non-skin surface side T2 of the absorption core 30. The non-skin surface sheet 20 includes a liquid-impermeable back film 21, a back non-woven fabric 22 arranged on the non-skin surface side T2 of the back film 21, and a non-skin side core wrap located on the non-skin surface side of the absorption core 30. 23 may have.

A flap portion 90 may be provided at least in the rear waist circumference area S2. The flap portion 90 extends outward in the width direction W from the absorption core 30. The flap portion 90 has a base material sheet 93 and a fastening member joined onto the base material sheet 93. The base material sheet 93 is joined between the skin surface sheet 10 and the non-skin surface sheet 20, and extends outward in the width direction W from the skin surface sheet 10 and the non-skin surface sheet 20. The fastening member is configured to be able to fasten to the target portion 95 provided in the front waist circumference region S1. More specifically, as the fastening member, a hook member that fastens to the target portion 95 is arranged. The fastening member of the present embodiment has a first fastening member 91 and a second fastening member 92 arranged at intervals in the front-rear direction L. The first fastening member 91 is located on the front side of the second fastening member 92. The front end edge 91F of the first fastening member 91 constitutes the front end edge of the fastening member, and the rear end edge 92R of the second fastening member 92 constitutes the rear end edge of the fastening member. In the modified example, one fastening member may be provided on each of the left and right sides. The front edge 90F of the flap portion 90 is composed of the front edge of the base sheet 93. Further, in the modified example, the absorbent article 1 does not include the base sheet 93 of the flap portion 90, and the skin surface sheet 10 and the non-skin surface sheet 20 extend outward in the width direction W and are placed on the skin surface sheet. The fastening members may be joined. In the modified example without the base material sheet 93, the front end edge 90F of the flap portion 90 may be formed by the front end edge of the fastening member. The absorbent article has a posterior region R10 extending between the front edge 90F of the fastening member and the trailing edge 1R of the absorbent article 1. As shown in FIG. 1, the rear side region R10 passes through the front end edge 90F of the flap portion 90 and extends in the width direction, and passes through the virtual line EL11 and the rear end edge 1R of the absorbent article 1 and extends in the width direction. It is an area sandwiched by the virtual line EL12.

As shown in FIG. 2, the absorbent article 1 is folded from the article fold FL1 extending along the front-rear direction L before use. The article folds FL1 are arranged in pairs with the article width center 1WC, which is the center of the absorbent article 1 in the width direction W, interposed therebetween. The absorbent article 1 is folded so that the skin surface side T1s face each other with the article fold FL1 as a base point. Therefore, the absorbent article 1 is formed with a crease in which the region outside the width direction W of the article fold FL1 rises to the skin surface side T1 with the article fold FL1 as a base point. As shown in FIG. 1, the article fold FL1 overlaps the absorption core 30 at least in the front waist circumference region S1 and the rear waist circumference region S2. The article fold FL1 of the present embodiment is outside the width direction W of the inner edge of the constriction 33 (the portion recessed inward of the width direction W most in the constriction) and wider than the outer edge 30E of the absorption core 30. It is arranged inside the direction W. The flap portion 90 of the absorbent article 1 is inside the flap portion in a state where the fastening member is folded inward in the width direction W and the fastening member is folded before being folded with the article fold FL1 as the base point. It is folded inward in the width direction W with the edge (the outer edge of the skin surface sheet 10 and the outer edge of the non-skin surface sheet 20) as a base point.

The outer portion in the present invention is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is an outer edge in the width direction W. The inner portion in the present invention is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W. Further, the front end portion and the rear end portion in the present invention are portions that occupy a certain range in the front-rear direction L including the edge in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer edge includes a front edge and a trailing edge, and the outer edge includes a front edge and a trailing edge. Further, the inner side is a side including the inner edge and extending along the front-rear direction L. The outer side is a side including the outer edge and extending along the front-rear direction L. In addition, in this specification, the term "along the anteroposterior direction L" means a direction having an angle of less than 45 ° with respect to the anteroposterior direction L, and the term "along the width direction W" is used. It means a direction having an angle of less than 45 ° with respect to the width direction W.

The absorbent article 1 has a side elastic member 80. The side elastic member 80 is located outside the width direction W with respect to the outer edge 30E of the absorption core, and expands and contracts in the front-rear direction L. The side elastic member 80 is an elastic member different from the leak-proof elastic member described later. The side elastic member 80 is joined between the skin surface sheet 10 and the non-skin surface sheet 20. More specifically, three side elastic members 80 are provided on each side at intervals in the width direction W. The side elastic member 80 located on the innermost side in the width direction W is arranged between the surface sheet 11 and the back film 21. The remaining two side elastic members 80 are arranged between the side sheet 12 and the back film 21.

The absorbent article has an inner leak-proof gather 601 and an outer leak-proof gather 602. The inner leak-proof gathers 601 and the outer leak-proof gathers 602 are configured to stand upright on the skin surface side T1 of the wearer, and are provided in pairs on the left and right. The leak-proof gather 60 includes a leak-proof elastic member, a contracted portion that contracts due to the contraction of the leak-proof elastic member, a width proximal edge that serves as an upright fulcrum of the contracted portion on the side of the contracted portion in the width direction W, and contraction. It has a front proximal edge 65 which is an upright fulcrum of the contracted portion 63 on the front side of the portion, and a rear proximal edge 66 which is an upright fulcrum of the contracted portion 63 on the posterior side of the contracted portion 63. .. The front edge of the contracted portion 63 coincides with the front proximal edge 65, and the trailing edge of the contracted portion 63 coincides with the posterior proximal edge 66. The contracted portion 63 is a region that can stand up toward the skin surface side T1, and is a concept that includes not only a region in which the leak-proof elastic member 69 is arranged but also a region in which the leak-proof elastic member 69 is not arranged. The inner leak-proof gather 601 and the outer leak-proof gather 602 are composed of at least a leak-proof sheet 68 and a leak-proof elastic member 69. The leak-proof elastic member 69 is arranged in a state of extending in the front-rear direction L, and expands and contracts in the front-rear direction L. The leak-proof sheet 68 is joined with a leak-proof elastic member 69, and is configured so that at least a part of the leak-proof sheet 68 can stand up against a sheet located on the non-skin surface side of the leak-proof sheet 68. In the following description of the inner leak-proof gathers 601 and the outer leak-proof gathers 602, unless otherwise specified, the positional relationship of the absorbent article 1 in the extended state is used.

The inner leak-proof gather 601 is a so-called inward-falling gather, and forms a storage space that opens toward the inside in the width direction W. The outer leakage-proof gathers 602 are so-called outward-falling gathers, and form a storage space that opens toward the outside in the width direction W. The outer leak-proof gather constitutes the "leak-proof gather" in the present invention. The inner leak-proof gather 601 is located inside the width direction W with respect to the outer leak-proof gather 602, and constitutes the "second leak-proof gather" in the present invention. It is sufficient that at least a part of the inner leak-proof gather 601 is located inside the outer leak-proof gather 602 in the width direction. The absorbent article 1 may have at least the outer leak-proof gathers 602 and may not have the inner leak-proof gathers 601.

The inner leakage-proof gathers 601 include an inner contraction portion 631 as a contraction portion 63, an inner width proximal edge 641 as a width proximal edge 64, an inner anterior proximal edge 651 as a front proximal edge 65, and a posterior base. It has an inner rear base edge 661 as an edge 66, an inner leak-proof sheet 681 as a leak-proof sheet 68, and an inner leak-proof elastic member 691 as a leak-proof elastic member 69. The inner leak-proof elastic member 691 is provided in the inner portion of the inner contraction portion 631, and is located inside the inner width proximal edge 641 in the width direction W in the extended state of the absorbent article. The apex of the inner contraction portion 631 is provided on the inner edge of the inner skin contact portion 711 described later. The inner leakage-proof sheet 681 of the present embodiment is composed of a surface sheet 11. In the modified example, the inner leakage-proof sheet 681 may be composed of a side sheet, or may be composed of a sheet other than the surface sheet and the side sheet.

The inner leak-proof gather 601 is located inside the inner facing portion 721, the inner skin contact portion 711, the inner leak-proof joint portion 731, and the inner leak-proof joint portion 731 in the front-rear direction, and is the inner skin contact portion. The 711 has an inner leak-proof non-joining portion 741 which is not joined to the inner facing portion 721. In the inner leak-proof gather 601 of the present embodiment, the inner skin contact portion 711 and the inner facing portion 721 are configured by the surface sheet 11 as the inner leak-proof sheet 681. However, in the modified example, the inner skin contact portion 711 and the inner facing portion 721 may be formed of different sheets. The inner leakage-proof sheet 681 of the present embodiment is folded inward on the skin surface side T1 and in the width direction W with the first surface crease FL11 as a base point in the outer portion in the width direction W, and is folded in the width direction of the folded portion. In the inner part of W, the second surface crease FL12 is used as a base point, and the surface is folded to the outside of T2 on the non-skin surface side and W in the width direction. The region between the first surface crease FL11 and the second surface crease FL12 is located on the skin surface side T1 of the inner facing portion 721, and is the most skin surface side of the inner leakage-proof gathers 601 in the extended state of the absorbent article 1. It is located at T1 and constitutes the inner skin contact portion 711. Of the regions between the first surface creases FL11, the region overlapping the inner skin contact portion 711 constitutes the inner facing portion 721. The inner leak-proof joint portion 731 is provided on the front side of the inner leak-proof non-joint portion 741 and on the rear side of the inner leak-proof non-joint portion 741. In the region overlapping the inner leak-proof joint portion 731, the inner skin contact portion 711 is configured so as not to stand up. In the region overlapping the inner leak-proof non-joining portion 741, the inner skin contact portion 711 is configured to be able to stand up, and the inner contraction portion 631 is formed. The inner skin contact portion 711 constitutes the "second skin contact portion" of the present invention, the inner facing portion 721 constitutes the "second facing portion" of the present invention, and the inner leakage-proof joint portion 731 constitutes. It constitutes the "second leakage-proof joint" of the present invention. The inner front base end edge 651 is the inner leak-proof joint portion 731 (the region where the inner skin contact portion 711 is fixed to the inner facing portion 721) on the front side of the inner leak-proof non-joint portion 741 (inner contraction portion 631). It is the trailing edge (the edge on the innermost contraction side) and coincides with the front edge of the inner leak-proof non-joint 741. The inner rear base end edge 661 is fixed to the inner leak-proof joint portion 731 (inner skin contact portion 711 and the tip portion 721) behind the inner leak-proof non-joint portion 741 (inner contraction portion 631). It is the front edge (the edge on the innermost contraction side) of the region) and coincides with the trailing edge of the inner leak-proof non-joint 741.

The outer leakage-proof gather 602 includes an outer contraction portion 632 as a contraction portion 63, an outer width proximal edge 642 as a width proximal edge 64, an outer anterior proximal edge 652 as a front proximal edge 65, and a posterior base. It has an outer rear base edge 662 as an edge 66, an outer leak-proof elastic member 692 as a leak-proof elastic member 69, and an outer leak-proof sheet 682 as a leak-proof sheet 68. The outer leakage-proof elastic member 692 is provided on the outer side of the outer contraction portion 632, and is located outside the outer width proximal edge 642 in the width direction W in the extended state of the absorbent article. The apex of the outer contraction portion 632 is provided on the outer edge of the outer contraction portion 632. The outer leak-proof elastic member 692 constitutes the "leak-proof elastic member" of the present invention. The outer leak-proof sheet 682 constitutes the "leak-proof sheet" of the present invention. The outer leakage-proof sheet 682 of the present embodiment is composed of a side sheet 12. In the modified example, the outer leakage-proof sheet 682 may be composed of a surface sheet, or may be composed of a sheet other than the surface sheet and the side sheet.

The outer leakage-proof gathers 602 include an outer facing portion 722 in which at least the outer leakage-proof sheet 682 extends from the outside in the width direction W toward the center in the width direction, and a leakage-proof crease (first side) in which the outer leakage-proof sheet 682 is located at the center side. The outer skin contact portion 712 folded outward in the width direction starting from the crease FL21), the outer leak-proof joint portion 732 in which the outer skin contact portion 712 is joined to the outer facing portion 722, and the outer leak-proof joint portion. It has an outer leak-proof non-joining portion 742 located inside in the front-rear direction with respect to the 732 and the outer skin contact portion 712 is not joined to the outer facing portion 722. The outer skin contact portion 712 is located on the skin surface side T1 with respect to the outer facing portion 722, and is located on the skin surface side T1 of the outer leakage-proof gathers 602 in the extended state of the absorbent article 1. The outer leak-proof joint portion 732 is provided on the front side of the outer leak-proof non-joint portion 742 and on the rear side of the outer leak-proof non-joint portion 742. In the region overlapping the outer leak-proof joint portion 732, the outer skin contact portion 712 is configured so as not to stand up. In the region overlapping the outer leak-proof non-joining portion 742, the outer skin contact portion 712 is configured to be able to stand up, and the outer contraction portion 632 is formed. The first side fold FL21 constitutes the "leakage-proof fold" of the present invention.

The outer leakage-proof sheet 682 of the present embodiment is formed by folding back the side sheet 12. More specifically, the side sheet 12 is folded to the outside of the skin surface side T1 and the width direction W with the first side crease FL21 as the base point in the inner portion in the width direction W, and the folded portion is folded in the width direction W. The outer portion is folded inside the non-skin surface side T2 and the width direction W with the second side crease FL22 as a base point. The region between the first side crease FL21 and the second side crease FL22 constitutes the outer skin contact portion 712. The portion folded with the second side fold FL22 as the base point constitutes the outer tip portion. Of the unfolded portion (the portion extending outward in the width direction W from the second side fold) with the second side fold FL22 as the base point, the region overlapping the outer skin contact portion 712 faces the outer skin contact portion 712. Consists of the outer facing portion 722 arranged in the above direction. The outer tip covers the outer facing portion 722. The outer leak-proof elastic member 692 is arranged between the outer skin contact portion 712 and the tip portion. The outer width base end edge 642 of the present embodiment is a second side crease FL22. The outer front base end edge 652 was fixed to the outer leak-proof joint portion 732 (outer skin contact portion 712 and tip portion 722) in front of the outer leak-proof non-joint portion 742 (outer contraction portion 632). It is the trailing edge of the region) (the edge on the outermost contraction side) and coincides with the front edge of the outer leak-proof non-joint 742. The outer rear base end edge 662 is fixed to the outer leak-proof joint portion 732 (outer skin contact portion 712 and tip portion 722) on the rear side of the outer leak-proof non-joint portion 742 (outer contraction portion 632). It is the front edge (the edge on the outermost contraction side) of the region) and coincides with the trailing edge of the outer leak-proof non-joint 742.

The absorbent article 1 of the present embodiment is configured to be wearable so that the apex of the outer leakage-proof gather 602 that has fallen out faces the outside in the width direction W. Next, the configuration for directing the apex of the outer leakage-proof gather 602 to the outside will be described in detail. The outer leak-proof joint portion 732 of the outer leak-proof gather 602 is provided in a region of half or more of the entire area of the rear region R10 in the front-rear direction L. The outer leak-proof joint portion 732 does not have to be continuous in the front-rear direction L within the rear region R10. In a form in which a plurality of outer leak-proof joints 732 are oriented at intervals in the front-rear direction L, the total length of the outer leak-proof joints 732 arranged in the rear region R10 is the rear region R10. It may be ½ or more with respect to the length in the front-back direction of. The outer leak-proof joint portion 732 of the present embodiment extends between the outer rear base end edge 662 and the rear end edge 1R of the absorbent article 1 on the rear side of the outer leak-proof non-joint portion 742. It is arranged over the entire area of the rear region R10 in the front-rear direction L. However, in the modified example, the trailing edge of the outer leak-proof joint 732 may be located in front of the trailing edge 1R of the absorbent article 1. Further, the length of the outer leak-proof joint portion 732 arranged in front of the outer leak-proof non-joint portion 742 in the front-rear direction L may be 1/4 or more of the length of the absorbent article in the front-rear direction L. ..

The outer skin contact portion 712 of the outer leak-proof gather 602 is configured so as not to stand up with respect to the outer facing portion 722 in the region overlapping the outer leak-proof joint portion 732, and in the region overlapping the outer leak-proof non-joint portion 742. It is configured to be able to stand up against the outer facing portion 722. The outer facing portion 722 is arranged on the non-skin surface side with respect to the outer skin contact portion 712. Therefore, when the flap portion 90 is pulled out in the mounting mode in which the outer portion of the absorbent article 1 as shown in FIG. 6 is temporarily folded, the absorbent article 1 is placed under the body, and then the flap portion 90 is pulled out. The outer facing portion 722 is easily pulled out together with the flap portion 90. On the other hand, the outer skin contact portion 712 is located on the most skin surface side T1, and directly receives the body pressure of the wearer and generates a frictional force with the skin, so that it is difficult to be pulled out together with the flap portion 90. When the applicant verified the mounting mode of the mounting assistant, the mounting assistant was aware that when pulling out the flap portion 90, he would pull out the fastening member, which is the next mounting operation, and the front end edge 90F of the fastening member. And the posterior region R10 extending between the posterior edge 1R of the absorbent article 1 was found to be pulled out. This is because the entire area of the fastening member in the front-rear direction can be pulled out by pulling out the rear side region R10. Since the outer leak-proof joint 732 is provided in more than half of the entire area of the rear region R10 in the front-rear direction, the outer skin contact portion 712 is passed through the outer leak-proof joint 732 when the flap portion 90 is pulled out. Is easily pulled out. Therefore, the outer skin contact portion 712 can be pulled out and attached so that the apex of the outer leakage-proof gather 602 that has fallen outward faces the outside in the width direction W.

The absorbent article 1 is between the front end edge of the fastening member located on the frontmost side of the plurality of fastening members and the rearmost edge of the fastening member located on the rearmost side of the plurality of fastening members. It has a fastening region R20 extending to. The outer leakage-proof joint portion 732 may be provided in a region of half or more of the entire area of the fastening region R20 in the front-rear direction L. Preferably, the outer leakage-proof joint portion 732 may be provided over the entire area of the fastening region R20 in the front-rear direction L. The fastening region R20 is sandwiched between a virtual line EL13 that passes through the front end edge of the fastening member and extends in the width direction W, and a virtual line EL14 that passes through the rear end edge of the fastening member and extends in the width direction W. Area. The plurality of fastening members may have a first fastening member 91 and a second fastening member 92 as in the present embodiment, or may have three or more fastening members. good. The fastening region R20 of the present embodiment passes through the front end edge 91F of the first fastening member 91 and passes through the virtual line EL13 extending in the width direction W and the rear end edge 92R of the second fastening member 92. It is an area sandwiched by the virtual line EL14 extending in the width direction W. According to this configuration, when the mounting assistant pulls out the entire fastening member at the time of mounting, the outer skin contact portion 712 is easily pulled out via the outer leak-proof joint portion 732. Therefore, the outer skin contact portion 712 can be pulled out and attached so that the apex of the outer leakage-proof gather 602 that has fallen outward faces the outside in the width direction W.

At least a part of the outer leak-proof joint portion 732 may be arranged outside the article fold FL1 in the width direction W in the unfolded state with the article fold FL1 as the base point. When folding the flap portion 90 at the time of wearing, it may be folded from the article crease FL1 having a crease. When folded in this way, after the wearer is placed on the absorbent article 1, the flap portion 90 is developed with the article fold FL1 as a base point. At the time of this deployment, the outer leak-proof joint portion 732 can be deployed together with the flap portion 90, and the outer skin contact portion 712 can be pulled out via the outer leak-proof joint portion 732. Therefore, the outer skin contact portion 712 can be pulled out and attached so that the apex of the outer leakage-proof gather 602 that has fallen outward faces outward in the width direction.

The first side fold FL21 as a leak-proof fold may be arranged outside the article fold FL1 in the width direction W in the unfolded state. When the flap portion 90 is developed with the article crease FL1 as a base point, the entire outer skin contact portion 712 can be pulled out together with the flap portion 90. Further, the article fold FL1 may overlap the absorption core 30 at least in the front waist circumference region S1 and the rear waist circumference region S2. When the flap portion 90 is deployed with the article fold FL1 as the base point, the flap portion 90 can be pulled out together with the absorption core 30, and the rigidity of the absorption core 30 makes it easy to pull out the flap portion 90 and the outer skin contact portion 712.

In the extended state of the absorbent article 1, the apex of the outer skin contact portion 712 may be located outside the outer edge 30E of the absorbing core 30 in the width direction W. The apex of the outer skin contact portion 712 is located at the outer edge of the outer skin contact portion 712. When the wearer is placed on the absorbent article 1 after the wearer is turned sideways at the time of wearing, the position is generally adjusted so that the wearer's buttocks ride on the absorbent core 30. That is, it is difficult for the wearer's buttocks to ride on the outside of the absorption core 30 in the width direction W. Since the apex of the outer skin contact portion 712 is arranged in the region where the wearer's body pressure is hard to be applied during the wearing process (the region outside the width direction W from the absorption core 30), the wearer's body during the wearing process. It is possible to suppress a problem that the apex of the outer skin contact portion 712 becomes difficult to expand due to pressure.

As shown in FIG. 3, in the extended state of the absorbent article 1, the first side fold FL21 as a leak-proof fold is located outside the width direction W of the outer edge 30E of the absorption core 30 at least in the inseam area S3. You can do it. Since the entire outer skin contact portion 712 is arranged in the region where the wearer's body pressure is hard to be applied during the wearing process (the region outside the width direction of the absorption core 30), the wearer's body pressure during the wearing process. It is possible to suppress a problem that the outer skin contact portion 712 becomes difficult to deploy.

The outer leakage-proof sheet 682 covers the outer portion of the surface sheet 11 and is joined to the surface sheet 11 via the surface joint portion. The length of the outer leak-proof joint 732 in the front-rear direction is longer than the length of the surface joint in the front-rear direction. According to this aspect, since the length of the outer leak-proof joint portion 732 in the front-rear direction is relatively long, it is easy to deploy the leak-proof gathers that fall out when the flap portion 90 is deployed. Further, since the length of the surface joint portion for joining the surface sheet 11 and the outer leak-proof sheet 682 in the front-rear direction is relatively short, the outer leak-proof gather 602 is not pulled too much inward in the width direction W, and the outer leak-proof gather is not pulled too much. It is easy to mount the 602 so that the apex of the 602 faces the outside of the width direction W, and it becomes easy to exert the original outward gathering function. The dorsal surface joint may be preferably located posterior to the crotch-side edge of the dorsal leak-proof joint, and more preferably posterior to the front edge of the second fastening member 92. Further, the surface joint portion on the ventral side may be preferably located on the front side of the crotch side edge of the ventral leak-proof joint portion.

The length of the outer leak-proof joint portion 732 in the front-rear direction L may be longer than the length of the inner leak-proof joint portion 731 in the front-rear direction L. In the present embodiment, the outer edge of the outer leak-proof joint 732 in the front-rear direction coincides with the outer edge of the inner leak-proof joint 731 in the front-rear direction, and the outer edge of the absorbent article in the front-rear direction. Has reached. The front-rear inner edge of the outer leak-proof joint 732 is located inside the front-rear inner edge of the inner leak-proof joint 731 in the front-rear direction. Since the length of the outer leak-proof joint portion 732 in the front-rear direction is relatively long, it is easy to deploy the leak-proof gathers that fall out when the flap portion is deployed. On the other hand, the second leak-proof gather is a so-called inward-falling leak-proof gather, the apex of which is located at the inner edge of the second skin facing portion. Since the length of the second leak-proof joint portion in the front-rear direction is relatively short, it is difficult to follow when the flap portion is deployed as compared with the leak-proof gather. Therefore, the apex of the leak-proof gather of the outward fall can be mounted so as to face the outside in the width direction, and the apex of the leak-proof gather of the inward fall can be mounted so as to face the inward in the width direction. 2 It becomes easier to demonstrate the function of leak-proof gathers.

The length of the outer leak-proof joint portion 732 provided in the front waist circumference region S1 in the front-rear direction L may be 1/4 or more of the length of the absorbent article 1 in the front-rear direction L. The outer leak-proof joint portion 732 provided in the front waist circumference region S1 may be arranged in front of the outer leak-proof non-joint portion 742, and if at least a part thereof is provided in the front waist circumference region S1. good. When the absorbent article 1 is attached, the front waist circumference area S1 is passed between the wearer's legs, and the wearer's abdomen is covered with the front waist circumference area S1. At this time, the space between the wearer's legs becomes narrow, and the outer leak-proof gathers 602 hit the legs, so that the outer leak-proof gathers 602 that have fallen outward may fall inward. However, since the length of the outer leak-proof joint portion 732 provided in the front waist circumference region S1 in the front-rear direction L is long, even if the outer leak-proof gather 602 hits the leg, the outer leak-proof gather 602 that falls outward may fall inward. It can be mounted so that the apex of the outer leakage-proof gather 602 that has fallen out is directed outward in the width direction.

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the invention as defined by the claims. Therefore, the description of the present specification is for the purpose of exemplification and does not have any limiting meaning to the present invention. For example, the leak-proof gathers of the above-described embodiment have an inner leak-proof gather 601 and an outer leak-proof gather 602, but in a modified example, the leak-proof gather may have only the outer leak-proof gather 602. .. The inner portion of the outer leak-proof gather 602 of the embodiment overlaps the outer portion of the inner leak-proof gather 601. That is, the outer leak-proof gathers 602 and the inner leak-proof gathers 601 are partially laminated and joined via an adhesive. However, in the modified example, the outer leak-proof gather 602 and the inner leak-proof gather 601 are not laminated and may be separated in the width direction W. Further, the outer leak-proof gather 602 of the embodiment is arranged on the skin surface side of the inner leak-proof gather 601. However, in the modified example, the inner leak-proof gather 601 may be arranged on the skin surface side T1 of the outer leak-proof gather 602.

The entire contents of Japanese Patent Application No. 2020-080721 filed on April 30, 2020 are incorporated herein by reference.

According to the present invention, it is possible to provide an absorbent article that can be worn so that the apex of the leak-proof gather of falling out faces outward in the width direction.

1: Absorbent article 11: Surface sheet (second leak-proof sheet)
12: Side sheet (leakage-proof sheet)
30: Absorption core 601: Inner leak-proof gather (leak-proof gather)
602: Outer leak-proof gather (second leak-proof gather)
63: Shrinkage portion 64: Width base end edge 65: Front base end edge 66: Rear base end edge 682: Outer leakage-proof sheet (leakage-proof sheet)
692: Outer leak-proof elastic member (leak-proof elastic member)
90: Flap portion 91: First fastening member (fastening member)
92: Second fastening member (fastening member)
FL1: Article crease FL21: First side crease (leak-proof crease)
L: Front-back direction S1: Front waist circumference area S2: Rear waist circumference area S3: Inseam area T1: Skin surface side T2: Non-skin surface side W: Width direction R10: Rear side area R20: Fastening area

Claims

The front waist area, the rear waist area, and the inseam area located between the front waist area and the rear waist area,
The front-rear direction from the front girth area to the rear girth area and the width direction orthogonal to the front-rear direction,
An absorption core that straddles the inseam area and extends to at least one of the front waist area and the rear waist area.
A flap portion extending outward in the width direction from the absorption core,
A fastening member that is joined to the flap portion of the rear waist circumference region and can be fastened to the front waist circumference region.
An absorbent article comprising a leak-proof elastic member and having a pair of left and right leak-proof gathers that can stand up on the skin surface side.
The leak-proof gathers include at least an opposing portion in which the leak-proof sheet extends from the outside in the width direction toward the center in the width direction, and the leak-proof gather outside in the width direction starting from a leak-proof crease at the center position. The skin contact portion folded back to the surface, the leak-proof joint portion to which the skin contact portion is joined to the facing portion, and the skin contact portion located inside the leak-proof joint portion in the front-rear direction. It has a leak-proof non-joining portion that is not joined to the facing portion, and has.
The skin contact portion is an absorbent article located closest to the skin surface side of the leak-proof gathers in the stretched state of the absorbent article.
The absorbent article has a posterior region extending between the front edge of the fastening member and the trailing edge of the absorbent article.
The leak-proof joint is an absorbent article provided in more than half of the entire area of the rear region in the front-rear direction.
A plurality of the fastening members are provided at intervals in the front-rear direction.
The absorbent article includes a front end edge of the fastening member located on the frontmost side of the plurality of fastening members, and a rear end edge of the fastening member located on the rearmost side of the plurality of fastening members. Has a anchoring area extending between
The absorbent article according to claim 1, wherein the leak-proof joint is provided in more than half of the entire area of the anchorage region in the front-rear direction.
Before use, the absorbent article extends along the anteroposterior direction and is arranged in pairs with the center of the absorbent article in the width direction as a base point on the skin surface of the absorbent article. Folded so that the sides face each other,
The absorbency according to claim 1 or 2, wherein at least a part of the leak-proof joint is arranged outside the article fold in the width direction in an unfolded state developed from the article crease. Goods.
The absorbent article according to claim 3, wherein the leak-proof fold is arranged outside the article fold in the unfolded state in the width direction.
The aspect according to any one of claims 1 to 3, wherein in the extended state of the absorbent article, the apex of the skin contact portion is located outside the outer edge of the absorbent core in the width direction. Absorbent article.
The absorbent article according to claim 5, wherein in the extended state of the absorbent article, the leak-proof crease is located outside the outer edge of the absorbent core in the width direction, at least in the inseam area.
It has a surface sheet arranged on the skin side of the absorption core and has.
The leak-proof sheet covers the outer portion of the surface sheet and is joined to the surface sheet via a surface joint portion.
The absorbent article according to any one of claims 1 to 6, wherein the length of the leak-proof joint portion in the front-rear direction is longer than the length of the surface joint portion in the front-rear direction.
It has a pair of left and right second leak-proof gathers that are located inside the width direction of the leak-proof gathers and can stand up on the skin surface side.
The second leak-proof gather includes a second skin contact portion located closest to the skin surface side in the second leak-proof gather, and a second facing portion arranged to face the second skin contact portion. It has a second leakage-proof joint portion to which the second skin contact portion and the second facing portion are joined.
The apex of the second leak-proof gather is located on the inner edge of the second skin contact portion.
The absorbent article according to any one of claims 1 to 7, wherein the length of the leak-proof joint portion in the front-rear direction is longer than the length of the second leak-proof joint portion in the front-rear direction.
The leak-proof joint is provided in the front waist circumference area.
Any of claims 1 to 8, wherein the length of the leak-proof joint provided in the front waist circumference region in the front-rear direction is 1/4 or more of the length of the absorbent article in the front-rear direction. Or the absorbent article according to item 1.