TWI876034B - Absorbent articles - Google Patents

Abstract

An absorbent article is provided, wherein the apex of the outwardly tilted leakproof hem can be worn toward the outside in the width direction. The absorbent article comprises: an absorbent core (30), a wing portion (90) extending toward the outside in the width direction beyond the absorbent core, the wing portion joined to the rear waist region, a fixing member that can be fixed to the front waist region, and a pair of left and right leakproof hems (601) that have a leakproof elastic member and can stand up toward the skin surface. The leak-proof hem has: an opposing portion (722) in which at least the leak-proof sheet extends from the outer side in the width direction toward the center in the width direction, a skin-contacting portion (712) in which the leak-proof sheet is folded toward the outer side in the width direction starting from a leak-proof fold at the center side position, a leak-proof joining portion (732) in which the skin-contacting portion is joined to the opposing portion, and a leak-proof non-joining portion (742) located on the inner side in the front-rear direction of the leak-proof joining portion and not joined to the aforementioned opposing portion. The skin-contacting portion is located on the skin-facing side of the leak-proof hem when the absorbent article is in an extended state. The absorbent article has a rear region (R10) extending between the front edge (90F) of the fixing member and the rear edge (1R) 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.

Description

Absorbent articles

The present invention relates to an absorbent article having a leak-proof hem standing up toward the wearer's side.

In the past, absorbent articles for absorbing the wearer's excrement such as urine and feces have disclosed absorbent articles having leak-proof hems that stand up toward the wearer's side (e.g., Patent Document 1). The leak-proof hems of Patent Document 1 have: a portion where a leak-proof sheet is folded toward the skin side with a fold along the front-back direction as a base point, a skin contact portion that is located most on the skin side in the stretched state of the absorbent article (a portion from _HP to the vertex in FIG. 1 of Patent Document 1), and an opposing portion that extends from the fold to the outside in the width direction and is arranged to be opposite to the skin contact portion in the stretched state (a portion from _HP to the standing point K in FIG. 1 of Patent Document 1). The vertex of the skin contact portion is located closer to the outside in the aforementioned width direction than the fold. The leak-proof hem of Patent Document 1 is a so-called leak-proof hem that is tilted outwards, standing up toward the skin surface side relative to the outer side of the standing point in the width direction.

When the installation assistant installs such an absorbent article on the wearer, he/she lifts the waist of the wearer and places the rear waist region under the waist. Then, the front waist region covers the abdomen of the wearer, and the fixing member provided in the rear waist region can be fixed to the front waist region. However, when a caregiver, for example, as the installation assistant, installs the absorbent article on an adult wearer, it is difficult for the caregiver to lift the waist of the wearer and place the rear waist region under the waist. Therefore, for example, according to the installation method shown in FIG. 6, the installation assistant can install the absorbent article 100 on the adult wearer who sleeps on his/her back. The installation assistant first changes the body position of the wearer. Specifically, it changes from the state of sleeping on the back to the state of sleeping on the side. The installation assistant folds the wing 110 extending outward in the width direction of the absorbent article from the absorbent core inward in the width direction, and places the folded absorbent article 100 on the side of the wearer's buttocks (Figures 6(a), (b)). Then, the installation assistant returns the wearer's body position to lying on his back, and lets the wearer sit on the folded absorbent article 100 (Figures 6(c), (d)). When the wearer sits on the absorbent article 100, the wearer's buttocks sit on the folded wing 110. The installation assistant applies force to pull out the folded wing 110 (Figures 6(e), (f)). Next, the installation assistant covers the wearer's abdomen with the front waist region, and fixes the fixing member 120 provided in the rear waist region to the front waist region, so that the absorbent article can be installed on the wearer.

[Prior Art Literature] [Patent Literature]

Patent document 1: Japanese Patent Publication No. 2002-282302

The absorbent article of Patent Document 1 has the following problems. If the absorbent article is installed by the above-mentioned installation method, the entire wing may not be pulled out in order to pull out the wing under the condition of applying the wearer's body pressure. More specifically, the apex of the leak-proof hem faces the outside in the width direction in the stretched state. However, during the installation process, when the wing is folded, the apex of the leak-proof hem faces the inside in the width direction. Therefore, when the wing is pulled out, the apex of the leak-proof hem cannot be pulled outward due to body pressure. When worn, the apex of the leak-proof hem cannot stand up to the outside in the width direction, and the original function of the leak-proof hem may not be exerted.

The present invention was developed in view of such a problem, and provides an absorbent article that can be worn with the apex of the outwardly tilted leak-proof ruffle facing outward in the width direction.

An absorbent article of one embodiment comprises: a front waist region, a rear waist region, and a crotch region located between the front waist region and the rear waist region; and a front-to-rear direction from the front waist region toward the rear waist region and a width direction orthogonal to the front-to-rear direction; and an absorbent core, which spans the crotch region and extends toward at least one of the front waist region and the rear waist region; and a wing portion, which extends outward in the width direction further than the absorbent core; and a fixing member, which is joined to the wing portion of the rear waist region and can be fixed to the front waist region; and a pair of left and right leak-proof ruffles, which are leak-proof elastic members and can stand up toward the skin side. The aforementioned leakproof hem has: an opposing portion in which at least the leakproof sheet extends from the outer side of the aforementioned width direction toward the center of the aforementioned width direction, a skin contact portion in which the aforementioned leakproof sheet is folded toward the outer side of the aforementioned width direction starting from the leakproof fold at the center side position, a leakproof joint portion in which the aforementioned skin contact portion is joined to the aforementioned opposing portion, and a leakproof non-joined portion located closer to the inner side of the aforementioned front-rear direction than the aforementioned leakproof joint portion, and the aforementioned skin contact portion is not joined to the aforementioned opposing portion. The aforementioned skin contact portion is located on the skin-facing side of the aforementioned leakproof hem when the aforementioned absorbent article is in an extended state. The aforementioned absorbent article has a rear side region extending between the front end edge of the aforementioned fixing member and the rear end edge of the aforementioned absorbent article. The aforementioned leak-proof joint is provided in more than half of the entire area of the aforementioned rear area in the front-to-back direction.

1: Absorbent articles

11: Surface sheet (second leak-proof sheet)

12: Side sheet (leak-proof sheet)

30: Absorbent core

601: Inner leak-proof hem (leak-proof hem)

602: External leak-proof hem (second leak-proof hem)

63: Contraction

64: Width base edge

65: Anterior base edge

66: posterior base terminal edge

682: External leak-proof sheet (leak-proof sheet)

692: External leak-proof elastic member (leak-proof elastic member)

90: Wings

91: The first fixed component (fixed component)

92: Second fixed member (fixed member)

FL1: Item crease

FL21: 1st side crease (leak-proof crease)

L: front and back direction

S1: front waist area

S2: Back waist area

S3: Crotch area

T1: Side of the skin

T2: Non-skin facial area

W: width direction

R10: posterior area

R20: Fixed area

93: Substrate sheet

661: medial posterior base edge

10: Skin sheet

1R: Backend edge

92R: Back-end edge

EL12: Imaginary line

662: Lateral posterior base edge

33: Narrowing part

652: Lateral anterior base edge

651: medial anterior base edge

1WC: object wide center

95: Target Department

732: External leak-proof joint

731: Inner leak-proof joint

631: medial contraction

632: Lateral contraction

741: Inner leak-proof non-joint part

742: Lateral contraction

90F: Front-end edge

EL11: Imaginary line

91F: Front-end fate

EL13: Imaginary line

EL14: Imaginary line

[Figure 1] is a top view of the absorbent article in its implementation form as viewed from the skin side.

[Figure 2] is a top view showing the absorbent article shown in Figure 1 being folded with the article fold line as the base point.

[Figure 3] is a cross-sectional view along the A-A line shown in Figure 1.

[Figure 4] is a cross-sectional view along the B-B line shown in Figure 1.

[Figure 5] is a cross-sectional view along the C-C line shown in Figure 1.

[Figure 6] is a diagram for explaining the installation method of absorbent articles in the prior art.

(1) Overview of implementation form

Based on the descriptions in this manual and the attached drawings, at least the following matters should be understood.

An absorbent article of one embodiment has: a front waist region, a rear waist region, and a crotch region between the front waist region and the rear waist region; and a front-rear direction from the front waist region toward the rear waist region and a width direction orthogonal to the front-rear direction; and an absorbent core, which crosses the crotch region and extends toward at least one of the front waist region and the rear waist region; and a wing portion, which extends outwardly in the width direction further than the absorbent core; and a fixing member, which is joined to the wing portion of the rear waist region and can be fixed to the front waist region; and a pair of left and right leakproof ruffles, which are leakproof elastic members and can stand up toward the skin surface. The aforementioned leak-proof hem has: an opposing portion in which at least the leak-proof sheet extends from the outer side in the aforementioned width direction toward the center in the aforementioned width direction, a skin-contacting portion in which the aforementioned leak-proof sheet is folded toward the outer side in the aforementioned width direction starting from a leak-proof fold at a center side position, a leak-proof joining portion in which the aforementioned skin-contacting portion is joined to the aforementioned opposing portion, and a leak-proof non-joining portion located closer to the inner side in the aforementioned front-rear direction than the aforementioned leak-proof joining portion, in which the aforementioned skin-contacting portion is not joined to the aforementioned opposing portion. The aforementioned skin-contacting portion is located on the skin-most side of the aforementioned leak-proof hem when the aforementioned absorbent article is in an extended state. The aforementioned absorbent article has a rear side region extending between the front end edge of the aforementioned fixing member and the rear end edge of the aforementioned absorbent article. The aforementioned leakproof joint is provided in more than half of the entire area of the aforementioned rear area in the front-to-back direction. According to this aspect, since the leakproof joint is provided in more than half of the entire area of the rear area in the front-to-back direction, when the wing is pulled out, the skin contact part can be easily pulled out through the leakproof joint. Therefore, the skin contact part can be pulled out and installed in a manner that the apex of the leakproof hem tilted outward faces the outside in the width direction.

According to an ideal embodiment, the aforementioned fixing members are arranged in plurality at intervals in the aforementioned front-to-back direction. The aforementioned absorbent article has a fixing area extending between the front edge of the fixing member located most in the front among the aforementioned plurality of fixing members and the aforementioned rear edge of the fixing member located most in the rear among the aforementioned plurality of fixing members. The aforementioned leakproof joint is provided in more than half of the entire area of the aforementioned fixing area in the front-to-back direction. According to this embodiment, when the installation assistant pulls out the entire fixing member during installation, the skin contact part can be easily pulled out through the leakproof joint. Therefore, the skin contact part can be pulled out and installed in a manner that the apex of the leakproof hem tilted outward faces the outside in the width direction.

According to an ideal embodiment, the absorbent article is folded before use with a pair of article folds extending along the front-rear direction and sandwiching the center of the width direction of the absorbent article as base points so that the skin-facing sides of the absorbent article face each other. At least a portion of the leak-proof joint is arranged on the outside of the width direction closer to the article fold in the unfolded state after being unfolded with the article fold as a base point. According to this embodiment, when folding the wings during installation, the folding may be performed with the article fold having folding habits as a base point. When folded in this way, after the wearer is placed on the absorbent article, the wings are unfolded with the article fold as a base point. During this unfolding, the leak-proof joint can be unfolded together with the wings, and the skin-contacting portion can be pulled out through the leak-proof joint. Therefore, the skin contact part can be pulled out and installed in such a way that the top point of the leak-proof hem that tilts outward faces the outside in the width direction.

According to an ideal aspect, the leakage-proof fold is arranged on the outer side of the width direction in the unfolded state, which is closer to the article fold than the article fold. According to this aspect, when the wing is unfolded with the article fold as the base point, the skin contact part can be pulled out together with the wing.

According to an ideal embodiment, in the stretched state of the absorbent article, the top point of the skin contact portion is located further to the outside in the width direction than the outer edge of the absorbent core.

According to this aspect, when the wearer is placed on the absorbent article after turning on his/her side during installation, the position is generally adjusted so that the wearer's buttocks sit on the absorbent core. That is, the wearer's buttocks are not easy to sit on the outer side of the absorbent core in the width direction. During the installation process, the apex of the skin contact part is arranged in the area where the wearer's body pressure is not easy to apply (the area is more outside in the width direction than the absorbent core), so the unfavorable situation that the apex of the skin contact part is not easy to unfold due to the wearer's body pressure during the installation process can be suppressed.

According to an ideal embodiment, in the stretched state of the absorbent article, the leakage-proof fold is located at least in the crotch region, further outward in the width direction than the outer edge of the absorbent core. According to this embodiment, in the region where the wearer's body pressure is not easily applied during installation (region further outward in the width direction than the absorbent core), the entire skin contact portion is arranged, so that the unfavorable situation that the top of the skin contact portion is not easy to unfold due to the wearer's body pressure during installation can be suppressed.

According to an ideal embodiment, there is a surface sheet disposed on the skin surface side of the absorbent core. The leakproof sheet covers the outer side of the surface sheet and is joined to the surface sheet via a surface joint. The length of the leakproof joint in the front-to-back direction is longer than the length of the surface joint in the front-to-back direction. According to this embodiment, since the length of the leakproof joint in the front-to-back direction is relatively long, when the wing is unfolded, the leakproof hem that is tilted outward is easily unfolded together. Furthermore, since the length of the surface joint that joins the surface sheet and the leakproof sheet in the front-to-back direction is relatively short, the leakproof hem will not be excessively pulled inward in the width direction, and the apex of the leakproof hem can be easily installed more toward the outside in the width direction, and the original function of the hem that is tilted outward can be easily exerted.

According to an ideal embodiment, there is a pair of left and right second leak-proof frills that are located further inward in the width direction than the leak-proof frills and can stand up toward the skin surface. The second leak-proof frills have: a second skin contact portion located most on the skin surface side of the second leak-proof frill, a second opposing portion arranged opposite to the second skin contact portion, and a second leak-proof joint portion that joins the second skin contact portion and the second opposing portion. The apex of the second leak-proof frill is located at the inner edge of the second skin contact portion.

The length of the aforementioned leak-proof joint in the front-to-back direction is longer than the length of the aforementioned second leak-proof joint in the front-to-back direction. According to this aspect, since the length of the aforementioned leak-proof joint in the front-to-back direction is relatively long, when the wing portion is unfolded, it is easy to unfold the leak-proof folds that are tilted outwards together. On the other hand, the second leak-proof fold has its apex located at the inner edge of the second skin contacting portion, i.e., the so-called leak-proof fold that is tilted inwards. Since the length of the second leak-proof joint in the front-to-back direction is relatively short, it is not easy to follow the leak-proof folds when the wing portion is unfolded. Therefore, the top point of the outwardly tilted leak-proof hem can be installed toward the outside in the width direction, and the top point of the inwardly tilted leak-proof hem can be installed toward the inside in the width direction, making it easy to exert the functions of the original leak-proof hem and the second leak-proof hem.

According to an ideal embodiment, the leakproof joint is provided in the front waist region. The length of the leakproof joint provided in the front waist region in the front-back direction is more than 1/4 of the length of the absorbent article in the front-back direction. When the absorbent article is installed, the front waist region is passed between the feet of the wearer, and the abdomen of the wearer is covered with the front waist region. At this time, the space between the feet of the wearer becomes narrower, and there is a concern that the leakproof hem will fall outward when it hits the feet and fall inward. However, since the length of the leak-proof joint provided in the front waist region in the front-rear direction is long, even if the leak-proof hem hits the foot, the leak-proof hem that is tilted outward can be prevented from tilting inward, and the top of the leak-proof hem that is tilted outward can be installed toward the outside in the width direction.

(2) Implementation form of absorbent articles

Hereinafter, a disposable diaper as an absorbent article in the form of implementation will be described with reference to the drawings. The absorbent article may be a disposable diaper for adults or a disposable diaper for children. In addition, in the description of the following drawings, the same or similar symbols are marked on the same or similar parts. However, the drawings are for illustration only, and it is necessary to pay attention to the situation that the ratio of each size is different from the actual one. Therefore, the specific size, etc. must be judged with reference to the following description. Moreover, even between the drawings, there may be parts with different relationship and ratio of each other's size.

FIG. 1 is a top view of the absorbent article 1 of the present embodiment as viewed from the skin side, and FIG. 2 is a top view of the absorbent article shown in FIG. 1 folded with the article fold as the base point. FIG. 3 is a cross-sectional view along the A- A line shown in FIG. 1. FIG. 4 is a cross-sectional view along the B-B line shown in FIG. 1. FIG. 5 is a cross-sectional view along the C-C line shown in FIG. 1. The top views shown in FIG. 1 and FIG. 2 show the stretched state of the absorbent article 1 until no wrinkles are formed. In addition, the stretched state in the present invention refers to the state in which the absorbent article 1 is stretched until no wrinkles are formed. Furthermore, the natural state in the present invention refers to the state in which the absorbent article 1 contained in the packaging bag is taken out of the packaging bag and placed in an environment of 20℃±2℃ and relative humidity 60%±5%RH for 24 hours. Although the absorbent article 1 of this embodiment is an unfolded absorbent article for adults, it is not limited to this. The absorbent article 1 can also be an absorbent article for children.

The absorbent article 1 has a front-back direction L and a width direction W that are orthogonal to each other. The front-back direction L is defined by the direction extending toward the front and back sides of the body (the direction extending toward the front waist region S1 and the back waist region S2). In other words, the front-back direction L is the direction in which the unfolded absorbent article 1 extends toward the front and back. In addition, the absorbent article 1 has a thickness direction T that is orthogonal to both the front-back direction L and the width direction W. The thickness direction T extends toward the skin side T1 facing the wearer and the non-skin side T2 facing away from the wearer. In this specification, the "skin side" is equivalent to the side facing the wearer's skin during use. The "non-skin side" is equivalent to the side facing the wearer's skin during use.

The absorbent article 1 has a front waist region S1, a rear waist region S2, and a crotch region S3. The front waist region S1 faces the front side of the wearer's body when in use. The rear waist region S2 faces the rear side of the wearer's body when in use. The crotch region S3 is located between the front waist region S1 and the rear waist region S2, and is arranged under the crotch of the wearer when in use. The crotch region S3 can be regulated by the absorbent core 30. Specifically, in an absorbent core 30 having a narrowing portion 33, the region where the narrowing portion 33 of the absorbent core 30 is formed becomes the region of the crotch region S3 in the front-rear direction L. In an absorbent core 30 without a narrowing portion 33, the central region of the length of the absorbent core 30 in the front-rear direction divided into three equal parts becomes the region of the crotch region S3 in the front-rear direction L. In this embodiment, the front edge of the narrowed portion 33 of the absorbent core 30 defines the boundary between the crotch region S3 and the front waist region S1, and the rear edge of the narrowed portion 33 of the absorbent core 30 defines the boundary between the crotch region S3 and the rear waist region S2.

The absorbent article 1 has at least an absorbent core 30. The absorbent core 30 extends across the crotch region S3 toward at least one of the front waist region S1 and the back waist region S2. The absorbent core 30 may be, for example, a laminate of an absorbent material such as pulverized pulp or a superabsorbent polymer (SAP), or a mixture thereof. As described above, the absorbent core 30 has a concave portion 33 in the crotch region that is concave in the width direction W. The length of the narrowed portion 33 in the width direction W is shorter than the length of the absorbent core other than the narrowed portion 33 in the width direction W.

The absorbent article 1 has a skin surface sheet 10 located on the skin surface side T1 of the absorbent core 30. The skin surface sheet has a surface sheet 11, a side sheet 12, and a skin side core wrap 13. The surface sheet 11 has liquid permeability and can be arranged in a manner to cover at least the center of the width direction W of the absorbent core 30. The side sheet 12 is formed of a general non-woven fabric, or can be made of a hydrophobic material and processed to have hydrophobicity. The side sheet 12 is arranged to cover both sides of the surface sheet 11 in the width direction W, closer to the outside of the width direction W than the center of the width direction W of the absorbent core 30. The surface sheet 11 constitutes the inner leakproof sheet 681 described later, and the side sheet 12 constitutes the outer leakproof sheet 682 described later. The skin-side core wrap 13 is made of non-woven fabric or thin paper. In a modified example, the skin-side sheet 10 may have a second sheet, which is on the non-skin side of the surface sheet 11 and is arranged closer to the skin side than the skin-side core wrap 13. The absorbent article 1 has a non-skin-side sheet 20 located on the non-skin side T2 of the absorbent core 30. The non-skin surface sheet 20 may include: a liquid-impermeable back film 21, a back nonwoven fabric 22 disposed on the non-skin surface side T2 of the back film 21, and a non-skin side core wrap 23 located on the non-skin surface side of the absorbent core 30.

It is sufficient to provide the wing portion 90 at least in the rear waist region S2. The wing portion 90 extends further outward in the width direction W than the absorbent core 30. The wing portion 90 comprises: a base sheet 93, and a fixing member joined to the base sheet 93. The base sheet 93 is joined between the skin surface sheet 10 and the non-skin surface sheet 20, and extends from the skin surface sheet 10 and the non-skin surface sheet 20 outward in the width direction W. The fixing member is configured to be fixed to a target portion 95 provided in the front waist region S1. In more detail, the fixing member is configured to be fixed to the target portion 95. The fixing member of this embodiment comprises a first fixing member 91 and a second fixing member 92 which are arranged at intervals in the front-rear direction L. The first fixing member 91 is located more forward than the second fixing member 92. The front edge 91F of the first fixing member 91 constitutes the front edge of the fixing member, and the rear edge 92R of the second fixing member 92 constitutes the rear edge of the fixing member. In addition, in a modified example, the fixing member may be provided one on each side. The front edge 90F of the wing 90 is constituted by the front edge of the base sheet 93. In a modified example, the absorbent article 1 does not have the base sheet 93 of the wing 90, and the skin surface sheet 10 and the non-skin surface sheet 20 extend outward in the width direction W, and the fixing member may be bonded to the skin surface sheet. In the modified example without the base sheet 93, the front edge 90F of the wing 90 may be constituted by the front edge of the fixing member. The absorbent article has a rear region R10 extending between the front edge 90F of the fixing member and the rear edge 1R of the absorbent article 1. As shown in FIG1 , the rear region R10 is a region sandwiched by an imaginary line EL11 extending in the width direction through the front edge 90F of the wing 90 and an imaginary line EL12 extending in the width direction through the rear edge 1R of the absorbent article 1.

As shown in FIG2 , the absorbent article 1 is folded before use with the article fold FL1 extending in the front-rear direction L as a base point. The article fold FL1 is arranged in a pair sandwiching the article width center 1WC as the center of the width direction W of the absorbent article 1. The absorbent article 1 is folded with the skin-facing sides T1 facing each other with the article fold FL1 as a base point. Therefore, in the absorbent article 1, the area on the outer side of the width direction W than the article fold FL1 forms a folding habit of standing up toward the skin-facing side T1 with the article fold FL1 as a base point. As shown in FIG1 , the article fold FL1 overlaps the absorbent core 30 at least in the front waist area S1 and the rear waist area S2. The article fold FL1 of this embodiment is located outside the width direction W than the inner edge of the narrowed portion 33 (the concave portion that is most concave inside the width direction W in the narrowed portion), and is arranged inside the width direction W than the outer edge 30E of the absorbent core 30. In addition, before the wing portion 90 of the absorbent article 1 is folded with the article fold FL1 as the base point, the fixing member is folded inside the width direction W, and when the fixing member is folded, the inner edge of the wing portion in the folded state (the outer edge of the skin surface sheet 10 and the outer edge of the non-skin surface sheet 20) is folded inside the width direction W as the base point.

In addition, the outer side portion in the present invention is a portion occupying a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The inner side portion in the present invention is a portion occupying a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is the inner edge in the width direction W. Furthermore, the front end portion and the rear end portion in the present invention are portions occupying a certain range in the front-to-back direction L including the edge in the front-to-back direction L, and the front end edge and the rear end edge are the edges in the front-to-back direction L. The outer side portion includes the front end portion and the rear end portion, and the outer edge includes the front end edge and the rear end edge. Furthermore, the inner edge includes the inner edge and is an edge extending along the front-to-back direction L. The outer side includes the outer edge and is a side extending along the front-rear direction L. In addition, in this specification, the term "along the front-rear direction L" refers to a direction having an angle less than 45° relative to the front-rear direction L. The term "along the width direction W" refers to a direction having an angle less than 45° relative to the width direction W.

The absorbent article 1 has a side elastic member 80. The side elastic member 80 is located on the outside of the outer edge 30E of the absorbent core in the width direction W and is stretchable in the front-rear direction L. The side elastic member 80 is a stretchable member different from the leakage-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 the left and right sides at intervals in the width direction W. The side elastic member 80 located most on the inner 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 hem 601 and an outer leak-proof hem 602. The inner leak-proof hem 601 and the outer leak-proof hem 602 are configured to stand up toward the skin side T1 of the wearer, and are provided in a pair on the left and right. The leak-proof hem 60 includes a leak-proof elastic member, a contraction portion contracted by contraction of the leak-proof elastic member, a width base edge serving as a support for the contraction portion on the side of the contraction portion in the width direction W, a front base edge 65 serving as a support for the contraction portion 63 on the front side of the contraction portion, and a rear base edge 66 serving as a support for the contraction portion 63 on the rear side of the contraction portion 63. The front edge of the contraction portion 63 coincides with the front base edge 65, and the rear edge of the contraction portion 63 coincides with the rear base edge 66. The contraction portion 63 is an area that can stand up toward the skin surface side T1, and includes not only an area where the leak-proof elastic member 69 is arranged, but also an area where the leak-proof elastic member 69 is not arranged. The inner leak-proof hem 601 and the outer leak-proof hem 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 being stretched in the front-rear direction L, and stretches in the front-rear direction L. The leak-proof sheet 68 is joined to the leak-proof elastic member 69, and is configured so that at least a portion of the sheet located on the non-skin surface side relative to the leak-proof sheet 68 can stand up. In addition, in the following description of the inner leakage-proof hem 601 and the outer leakage-proof hem 602, unless otherwise specified, the positional relationship is the stretched state of the absorbent article 1.

The inner leak-proof fold 601 is a so-called inwardly tilted fold, and forms a storage space that opens on the inner side toward the width direction W. The outer leak-proof fold 602 is a so-called outwardly tilted fold, and forms a storage space that opens on the outer side toward the width direction W. The outer leak-proof fold constitutes the "leak-proof fold" in the present invention. The inner leak-proof fold 601 is located on the inner side of the width direction W more than the outer leak-proof fold 602, and constitutes the "second leak-proof fold" in the present invention. In addition, at least a portion of the inner leak-proof fold 601 only needs to be located on the inner side of the width direction more than the outer leak-proof fold 602. The absorbent article 1 only needs to have at least the outer leakage-proof hem 602 and may not have the inner leakage-proof hem 601.

The inner leak-proof hem 601 has: an inner contraction portion 631 as the contraction portion 63, an inner width base edge 641 as the width base edge 64, an inner front base edge 651 as the front base edge 65, an inner rear base edge 661 as the rear base edge 66, an inner leak-proof sheet 681 as the leak-proof sheet 68, and an inner leak-proof elastic member 691 as the leak-proof elastic member 69. The inner leak-proof elastic member 691 is provided at the inner side of the inner contraction portion 631, and is located in the inner side of the width direction W more than the inner width base edge 641 in the stretched state of the absorbent article. The apex of the inner contraction portion 631 is provided at the inner edge of the inner skin contact portion 711 described later. The inner leak-proof sheet 681 of this embodiment is formed by the surface sheet 11. In addition, in a modified example, the inner leak-proof sheet 681 may also be formed by a side sheet, or may be formed by other sheets other than the surface sheet and the side sheet.

The inner leakproof hem 601 has an inner side opposing portion 721, an inner side skin contact portion 711, an inner side leakproof joint portion 731, and an inner side leakproof non-joined portion 741, which is located further inward in the front-rear direction than the inner side leakproof joint portion 731, and the inner side skin contact portion 711 is not joined to the inner side opposing portion 721. The inner side leakproof hem 601 of this embodiment is constituted by the inner side skin contact portion 711 and the inner side opposing portion 721 by the surface sheet 11 as the inner side leakproof sheet 681. However, in a modified example, the inner side skin contact portion 711 and the inner side opposing portion 721 may be constituted by different sheets. The inner leakage-proof sheet 681 of the present embodiment is folded toward the skin surface side T1 and toward the inner side of the width direction W with the first surface fold FL11 as a base point at the outer side of the width direction W, and is folded toward the non-skin surface side T2 and the outer side of the width direction W with the second surface fold FL12 as a base point at the inner side of the width direction W of the folded portion. The area between the first surface fold FL11 and the second surface fold FL12 is located closer to the skin surface side T1 than the inner side facing portion 721, and is located closest to the skin surface side T1 in the inner leakage-proof hem 601 when the absorbent article 1 is in the stretched state, thereby constituting the inner skin contact portion 711. In the area between the first surface folds FL11, the area overlapping with the inner skin contacting portion 711 constitutes the inner opposing portion 721. The inner leak-proof joint portion 731 is provided at the front side and the rear side of the inner leak-proof non-joined portion 741. The area overlapping with the inner leak-proof joint portion 731 is such that the inner skin contacting portion 711 cannot stand up. The area overlapping with the inner leak-proof non-joined portion 741 is such that the inner skin contacting portion 711 can stand up and forms the inner contraction portion 631. The inner skin contact part 711 constitutes the "second skin contact part" of the present invention, the inner opposing part 721 constitutes the "second opposing part" of the present invention, and the inner leak-proof joint part 731 constitutes the "second leak-proof joint part" of the present invention. The inner front base end edge 651 is the rear edge (the edge on the inner contraction side) of the inner leak-proof joint part 731 (the area where the inner skin contact part 711 is fixed to the inner opposing part 721) which is more anterior than the inner leak-proof non-joint part 741 (the inner contraction part 631), and is consistent with the front end edge of the inner leak-proof non-joint part 741. The inner rear base end edge 661 is the front end edge (the edge most on the inner contraction side) of the inner leak-proof joint 731 (the area where the inner skin contact part 711 and the front end are fixed to the inner opposing part 721) which is further back than the inner leak-proof non-joint 741 (inner contraction part 631), and is consistent with the rear end edge of the inner leak-proof non-joint 741.

The outer leakage-proof hem 602 includes an outer contraction portion 632 as the contraction portion 63, an outer width base edge 642 as the width base edge 64, an outer front base edge 652 as the front base edge 65, an outer rear base edge 662 as the rear base edge 66, an outer leakage-proof elastic member 692 as the leakage-proof elastic member 69, and an outer leakage-proof sheet 682 as the leakage-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 further to the outside in the width direction W than the outer width base edge 642 in the stretched state of the absorbent article. The apex of the outer contraction portion 632 is set at 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 leak-proof sheet 682 of this embodiment is constituted by the side sheet 12. In addition, in a modified example, the outer leak-proof sheet 682 can also be constituted by a surface sheet, and can also be constituted by other sheets other than the surface sheet and the side sheet.

The outer leak-proof hem 602 comprises: at least an outer opposing portion 722 of the outer leak-proof sheet 682 extending from the outer side in the width direction W toward the center in the width direction, an outer skin contact portion 712 of the outer leak-proof sheet 682 which is folded toward the outer side in the width direction starting from the leak-proof fold (the first side fold FL21) at the center side position, an outer leak-proof joint portion 732 in which the outer skin contact portion 712 is joined to the outer opposing portion 722, and an outer leak-proof non-joined portion 742 which is located on the inner side in the front-rear direction than the outer leak-proof joint portion 732, and the outer skin contact portion 712 is not joined to the outer opposing portion 722. The outer skin contact portion 712 is located closer to the skin surface T1 than the outer opposing portion 722, and is located closest to the skin surface T1 in the outer leakage-proof fold 602 when the absorbent article 1 is in the stretched state. The outer leakage-proof joint portion 732 is located closer to the front side than the outer leakage-proof non-joined portion 742 and closer to the rear side than the outer leakage-proof non-joined portion 742. The area overlapping with the outer leakage-proof joint portion 732 is configured so that the outer skin contact portion 712 cannot stand up. The area overlapping with the outer leakage-proof non-joined portion 742 is configured so that the outer skin contact portion 712 can stand up and forms the outer contraction portion 632. The first side fold FL21 constitutes the "leakage-proof fold" of the present invention.

The outer leak-proof sheet 682 of the present embodiment is formed by folding the side sheet 12. More specifically, the side sheet 12 is folded toward the skin surface side T1 and the outer side of the width direction W with the first side fold FL21 as the base point at the inner side of the width direction W, and is folded toward the non-skin surface side T2 and the inner side of the width direction W with the second side fold FL22 as the base point at the outer side of the width direction W of the folded portion. The area between the first side fold FL21 and the second side fold FL22 constitutes the outer skin contact portion 712. The portion folded with the second side fold FL22 as the base point constitutes the outer front end portion. The area that overlaps with the outer skin contact portion 712 in the portion that is not folded with the second side fold FL22 as the base point (the portion that extends outward from the second side fold in the width direction W) constitutes the outer opposing portion 722 that is arranged opposite to the outer skin contact portion 712. The outer front end portion covers the outer opposing portion 722. The outer leakage-proof elastic member 692 is arranged between the outer skin contact portion 712 and the front end portion. The outer width base edge 642 of this embodiment is the second side fold FL22. The outer front base edge 652 is the rear edge (the edge most on the outer contraction part side) of the outer leakage-proof joining portion 732 (the area where the outer skin abutment portion 712 and the front end portion are fixed to the outer opposing portion 722) which is closer to the front side than the outer leakage-proof non-joining portion 742 (the outer contraction part 632), and is consistent with the front end edge of the outer contraction part 742. The outer rear base edge 662 is the front edge (the edge most on the outer contraction side) of the outer leak-proof joint 732 (the area where the outer skin contact part 712 and the front end are fixed to the outer opposing part 722) which is more posterior than the outer leak-proof non-joint 742 (the outer contraction part 632), and is consistent with the rear edge of the outer leak-proof non-joint 742.

The absorbent article 1 of this embodiment is configured such that the apex of the outer leakage-proof hem 602 tilted outward can be worn toward the outside in the width direction W. Next, a detailed description is given of the structure for making the apex of the outer leakage-proof hem 602 face toward the outside. The outer leakage-proof joint 732 of the outer leakage-proof hem 602 is provided in more than half of the entire area of the rear region R10 in the front-to-back direction L. In addition, the outer leakage-proof joint 732 may not be continuous in the front-to-back direction L in the rear region R10. In the configuration where a plurality of outer leakage-proof joints 732 are provided at intervals in the front-to-back direction L, the total length of the outer leakage-proof joints 732 arranged in the rear region R10 only needs to be at least 1/2 of the length of the rear region R10 in the front-to-back direction. In addition, the outer leakage-proof joints 732 of the present embodiment are arranged further back than the outer leakage-proof non-joined portion 742, extending between the outer rear base edge 662 and the rear edge 1R of the absorbent article 1, and arranged in the entire area of the rear region R10 in the front-to-back direction L. However, in a modified example, the rear edge of the outer leakage-proof joint 732 only needs to be located further forward than the rear edge 1R of the absorbent article 1. Furthermore, the length of the outer leakage-proof joint 732 disposed on the front side more forward than the outer leakage-proof non-joined portion 742 in the front-back direction L may be at least 1/4 of the length of the absorbent article in the front-back direction L.

The outer skin contacting portion 712 of the outer leakage-proof hem 602 is configured such that the region overlapping with the outer leakage-proof jointing portion 732 cannot stand up relative to the outer opposing portion 722, and the region overlapping with the outer leakage-proof non-joining portion 742 can stand up relative to the outer opposing portion 722. The outer opposing portion 722 is arranged closer to the non-skin surface than the outer skin contacting portion 712. Therefore, when the outer portion of the absorbent article 1 shown in FIG. 6 is temporarily folded, the absorbent article 1 is arranged under the body, and then the wing portion 90 is pulled out, the outer opposing portion 722 is easily pulled out together with the wing portion 90 when the wing portion 90 is pulled out. On the other hand, the outer skin contact portion 712 is located at the skin-most side T1, directly bearing the body pressure of the wearer and generating friction with the skin, and is not easily pulled out together with the wing portion 90. When the applicant verified the installation mode of the installation assistant, it was understood that when the installation assistant pulls out the wing portion 90, he will be concerned about pulling out the fixing member in the next installation operation, and pull out the rear region R10 extending between the front edge 90F of the fixing member and the rear edge 1R of the absorbent article 1. By pulling out the rear region R10, the entire front-back direction of the fixing member can be pulled out. Because 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, when the wing 90 is pulled out, the outer skin contact portion 712 can be easily pulled out through the outer leak-proof joint 732. Therefore, by pulling out the outer leak-proof hem 712, the apex of the outer skin contact portion 602 tilted outward can be installed toward the outside of the width direction W.

The absorbent article 1 has a fixing region R20 extending between the front edge of the fixing member most located on the front side among the plurality of fixing members and the rear edge of the fixing member most located on the rear side among the plurality of fixing members. The outer leakage-proof joint 732 may be provided in more than half of the entire region of the fixing region R20 in the front-rear direction L. Preferably, the outer leakage-proof joint 732 may be provided in the entire region of the fixing region R20 in the front-rear direction L. The fixing region R20 is a region sandwiched by an imaginary line EL13 passing through the front edge of the fixing member and extending in the width direction W, and an imaginary line EL14 passing through the rear edge of the fixing member and extending in the width direction W. The plurality of fixing members may be a first fixing member 91 and a second fixing member 92 as in the present embodiment, or may have three or more fixing members. The fixing region R20 of the present embodiment is a region sandwiched by an imaginary line EL13 passing through the front edge 91F of the first fixing member 91 and extending in the width direction W, and an imaginary line EL14 passing through the rear edge 92R of the second fixing member 92 and extending in the width direction W. According to this structure, when the installation assistant pulls out the entire fixing member during installation, the outer skin contact portion 712 can be easily pulled out through the outer leak-proof joint portion 732. Therefore, by pulling out the outer leak-proof hem 712, the apex of the outer skin contact portion 602 that is tilted outward can be installed toward the outside in the width direction W.

At least a portion of the outer leak-proof joint 732 may be arranged on the outer side of the article fold FL1 in the width direction W after being unfolded with the article fold FL1 as the base point. When the wing portion 90 is folded during installation, the folding is performed with the article fold FL1 having the folding habit as the base point. When folded in this way, after the wearer is placed on the absorbent article 1, the wing portion 90 is unfolded with the article fold FL1 as the base point. During this unfolding, the outer leak-proof joint 732 can be unfolded together with the wing portion 90, and the outer skin contact portion 712 can be pulled out through the outer leak-proof joint 732. Therefore, by pulling out the outer leak-proof hem 712, the apex of the outer skin contacting portion 602 that is tilted outward can be installed toward the outside in the width direction.

The first side fold FL21 as a leak-proof fold can be arranged on the outside of the width direction W more than the article fold FL1 in the unfolded state. When the wing 90 is unfolded with the article fold FL1 as the base point, the outer skin contact portion 712 can be pulled out together with the wing 90. In addition, the article fold FL1 can overlap the absorbent core 30 at least in the front waist region S1 and the back waist region S2. When the wing 90 is unfolded with the article fold FL1 as the base point, the wing 90 can be pulled out together with the absorbent core 30, and the wing 90 and the outer skin contact portion 712 can be easily pulled out by the rigidity of the absorbent core 30.

When the absorbent article 1 is in the stretched state, the apex of the outer skin contact portion 712 is located on the outer side of the width direction W than the outer edge 30E of the absorbent core 30. The apex of the outer skin contact portion 712 is located on the outer edge of the outer skin contact portion 712. When the wearer is placed on the absorbent article 1 after turning on his or her side during installation, the position is generally adjusted in such a way that the wearer's buttocks sit on the absorbent core 30. That is, it is not easy for the wearer's buttocks to sit on the outer side of the absorbent core 30 in the width direction W. During the installation process, the apex of the outer skin contact part 712 is arranged in the area where the wearer's body pressure is not easily applied (the area further outside the width direction W than the absorbent core 30), so the unfavorable situation that the apex of the outer skin contact part 712 is not easy to unfold due to the wearer's body pressure during the installation process can be suppressed.

As shown in FIG3 , in the stretched state of the absorbent article 1, the first side fold FL21 as the leakage prevention fold is located at least in the crotch region S3, further outside the outer edge 30E of the absorbent core 30 in the width direction W. During the installation process, the entire outer skin contact portion 712 is arranged in the area where the wearer's body pressure is not easily applied (the area further outside the absorbent core 30 in the width direction), so the unfavorable situation that the apex of the outer skin contact portion 712 is difficult to unfold due to the wearer's body pressure during the installation process can be suppressed.

The outer side leakage-proof sheet 682 covers the outer side of the surface sheet 11 and is joined to the surface sheet 11 via the surface joint portion. The length of the outer side leakage-proof joint portion 732 in the front-to-back direction is longer than the length of the surface joint portion in the front-to-back direction. According to this aspect, since the length of the outer side leakage-proof joint portion 732 in the front-to-back direction is relatively long, when the wing portion 90 is unfolded, it is easy to unfold the leakage-proof hem that is tilted outward together. Furthermore, because the length of the surface joint portion of the joint surface sheet 11 and the outer leakproof sheet 682 in the front-to-back direction is relatively short, the outer leakproof hem 602 will not be excessively pulled inward in the width direction W, and it is easy to install the outer leakproof hem 602 with the vertex facing outward in the width direction W, and it is easy to exert the original outwardly tilted hem function. The surface joint portion of the back side is ideally located further back than the crotch side edge of the back leakproof joint portion, and more ideally located further back than the front end edge of the second fixing member 92. Furthermore, the surface joint portion of the abdomen side is ideally located further forward than the crotch side edge of the abdomen leakproof joint portion.

The length L of the outer leak-proof joint 732 in the front-to-back direction is longer than the length L of the inner leak-proof joint 731 in the front-to-back direction. In the present embodiment, the outer edge of the outer leak-proof joint 732 in the front-to-back direction is consistent with the outer edge of the inner leak-proof joint 731 in the front-to-back direction and reaches the outer edge of the absorbent article in the front-to-back direction. The inner edge of the outer leak-proof joint 732 in the front-to-back direction is located further inward in the front-to-back direction than the inner edge of the inner leak-proof joint 731 in the front-to-back direction. Since the length of the outer leak-proof joint 732 in the front-to-back direction is relatively long, when the wing is unfolded, it is easy to unfold the leak-proof hem that is tilted outward together. On the other hand, the apex of the second leak-proof fold is located at the inner edge of the second skin contacting portion, i.e., the so-called inwardly tilted leak-proof fold. Since the length of the second leak-proof joint in the front-to-back direction is relatively short, it is not easy to follow the unfolding of the wing portion compared with the leak-proof fold. Therefore, the apex of the outwardly tilted leak-proof fold can be installed toward the outside in the width direction, and the apex of the inwardly tilted leak-proof fold can be installed toward the inside in the width direction, so that the original leak-proof fold and the second leak-proof fold can be easily exerted.

The length of the outer leak-proof joint 732 disposed in the front waist region S1 in the front-back direction L is sufficient to be at least 1/4 of the length of the absorbent article 1 in the front-back direction L. In addition, the outer leak-proof joint 732 disposed in the front waist region S1 only needs to be disposed more forward than the outer leak-proof non-joined portion 742, and at least a portion of it needs to be disposed in the front waist region S1. When the absorbent article 1 is installed, the front waist region S1 is passed between the wearer's feet, and the wearer's abdomen is covered with the front waist region S1. At this time, the space between the wearer's feet becomes narrower, and there is a concern that the outer leak-proof hem 602 will fall outward when it hits the feet, and the outer leak-proof hem 602 will fall inward. However, since the length of the outer leak-proof joint 732 provided in the front waist region S1 in the front-rear direction L is long, even if the outer leak-proof hem 602 hits the foot, the outer leak-proof hem 602 that is tilted outward can be prevented from tilting inward, and the apex of the outer leak-proof hem 602 that is tilted outward can be installed toward the outside in the width direction.

Although the above-mentioned embodiments are used to explain the present invention in detail, it is obvious to the industry that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as a modified and altered form without departing from the purpose and scope of the present invention as set forth in the description of the patent application scope. Therefore, the description in this specification is for the purpose of illustrative explanation and does not have any intention to limit the present invention. For example, although the leak-proof hem of the above-mentioned embodiment has an inner leak-proof hem 601 and an outer leak-proof hem 602, in a modified example, the leak-proof hem only has an outer leak-proof hem 602. The inner side of the outer leak-proof hem 602 of the embodiment overlaps the outer side of the inner leak-proof hem 601. That is, the outer leak-proof hem 602 and the inner leak-proof hem 601 are partially laminated and joined via an adhesive. However, in a modified example, the outer leak-proof hem 602 and the inner leak-proof hem 601 are not laminated, and can be separated in the width direction W. In addition, the outer leak-proof hem 602 of the embodiment is arranged on the skin side of the inner leak-proof hem 601. However, in a modified example, the inner leak-proof hem 601 can also be arranged on the skin side T1 of the outer leak-proof hem 602.

In addition, the entire contents of Japanese Patent Application No. 2020-080721 filed on April 30, 2020 are incorporated into this specification by reference.

[Industrial availability]

According to the invention, an absorbent article can be provided in which the apex of the outwardly tilted leak-proof ruffle can be worn toward the outside in the width direction.

1: Absorbent articles

93: substrate sheet

90: Wing

661: medial posterior base edge

66: posterior base edge

30: Absorbent core

11: Surface sheet (second leak-proof sheet)

10: Skin sheet

1R: Backend Edge

12: Side sheet (leakage-proof sheet)

92R: Backend Edge

EL12: Imaginary Line

S1: front waist area

S2: Back waist area

S3: Crotch area

92: Second fixing member (fixing member)

91: First fixing member (fixing member)

662: Lateral posterior base edge

33: Narrowing

652: Lateral anterior base edge

65: anterior base edge

651: medial anterior base edge

FL1: Item crease

1WC: Article Wide Center

95: Target Department

732: External leak-proof joint

731: Inner leak-proof joint

631: medial contraction

63: Contraction

632: Lateral contraction

741: Inner leak-proof non-joint part

742: Lateral contraction

90F: Front-end edge

EL11: Imaginary Line

91F: Front-end Edge

EL13: Imaginary Line

R10: Posterior area

R20: Fixed area

EL14: Imaginary Line

Claims (7)

An absorbent article comprises: a front waist region, a rear waist region, and a crotch region between the front waist region and the rear waist region; a front-rear direction from the front waist region toward the rear waist region and a width direction orthogonal to the front-rear direction; an absorbent core, which spans the crotch region and extends toward at least one of the front waist region and the rear waist region; a wing portion, which extends outward in the width direction further than the absorbent core; a fixing member, which is joined to the wing portion of the rear waist region and can be fixed to the front waist region; and left and right A pair of leakproof frills, which are leakproof elastic components and can stand up toward the skin surface, the leakproof frills have inner leakproof frills and outer leakproof frills, and the absorbent article is characterized in that the outer leakproof frills have: at least an outer side opposing portion of the outer leakproof sheet extending from the outer side in the width direction toward the center in the width direction, an outer skin contact portion of the outer leakproof sheet folded toward the outer side in the width direction with the leakproof fold at the center side as the starting point, an outer leakproof joint portion where the outer skin contact portion is joined to the outer side opposing portion, and an outer side leakproof joint portion located at a position smaller than the outer side. The leakproof joint portion is closer to the inner side in the front-rear direction, the outer skin contact portion is not joined to the outer leakproof non-joined portion of the outer opposing portion, the inner leakproof fold has: an inner skin contact portion located most on the skin side of the inner leakproof fold, an inner opposing portion arranged opposite to the inner skin contact portion, and an inner leakproof joint portion joining the inner skin contact portion and the inner opposing portion, the apex of the inner leakproof fold is located at the inner edge of the inner skin contact portion, and the outer skin contact portion is located at the inner side of the absorbent article. In the stretched state, the absorbent article is located at the skin-facing side of the leakage-proof fold, the absorbent article has a rear region extending between the front edge of the fixing member and the rear edge of the absorbent article, the outer leakage-proof joint is provided in more than half of the entire front-to-back direction of the rear region, the length of the outer leakage-proof joint provided in the front waist region in the front-to-back direction is longer than the length of the inner leakage-proof joint provided in the waist region in the front-to-back direction, and is more than 1/4 of the length of the absorbent article. The absorbent article as recited in claim 1, wherein, in the stretched state of the absorbent article, the apex of the outer skin contact portion is located in the crotch region, further outward in the width direction than the outer edge of the absorbent core, and the apex of the inner leakage-proof hem is located in the crotch region, further outward in the width direction than the outer edge of the absorbent core. An absorbent article as recited in claim 1 or claim 2, wherein, in the stretched state of the absorbent article, the inner leakage-proof joint provided in the waist region is arranged in a region overlapping with the absorbent core. The absorbent article as claimed in claim 1 or claim 2, wherein the absorbent article is folded before use with a pair of article folds extending along the front-rear direction and sandwiching the center of the width direction of the absorbent article as base points so that the skin surfaces of the absorbent article face each other, and in the stretched state of the absorbent article, the outer leak-proof fold and the outer leak-proof joint are located further outward in the width direction than the article fold, and the apex of the inner leak-proof hem is located further inward in the width direction than the article fold. The absorbent article as recited in claim 1 or claim 2, wherein the aforementioned fixing members are provided in plurality at intervals in the aforementioned front-rear direction, the aforementioned absorbent article has a fixing area extending between the front end edge of the fixing member located most forward among the aforementioned plurality of fixing members and the rear end edge of the fixing member located most rearward among the aforementioned plurality of fixing members, and the aforementioned leak-proof joint is provided in more than half of the entire area of the aforementioned fixing area in the aforementioned front-rear direction. An absorbent article as recited in claim 1 or claim 2, wherein, in the stretched state of the absorbent article, the outer leakage prevention fold is located at least in the crotch region, further outward in the width direction than the outer edge of the absorbent core. The absorbent article as recited in claim 1 or claim 2, wherein the absorbent article has a surface sheet disposed on the skin side of the absorbent core, wherein the outer leakage-proof sheet covers the outer side of the surface sheet and is joined to the surface sheet via a surface joint portion, and the length of the outer leakage-proof joint portion in the front-to-back direction is longer than the length of the surface joint portion in the front-to-back direction.

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