CN114555023B

CN114555023B - Absorbent article

Info

Publication number: CN114555023B
Application number: CN202080072210.5A
Authority: CN
Inventors: 吉冈稔泰; 深泽润
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2019-11-11
Filing date: 2020-11-04
Publication date: 2023-08-15
Anticipated expiration: 2040-11-04
Also published as: CN114555023A; JP7145838B2; JP2021074355A; WO2021095610A1

Abstract

Provided is an absorbent article (1) which can suppress leakage of excrement caused by sagging of the crotch region. The absorbent article has: an absorbent core (31) which contains an absorbent material and is disposed in the crotch region and at least the 1 st waist region; a waist elastic member (55) disposed in a state of being elongated in the width direction in a waist region including a 1 st waist region and a 2 nd waist region; and leg elastic members (85) which are disposed in the crotch region at positions outside the absorbent core in the width direction and are disposed in a state of being elongated in the front-rear direction. The waist elastic member has: a continuous elastic member (55C) that continuously extends from one outer side portion of the 1 st waist region to the other outer side portion in the width direction; and a discontinuous elastic member (55N) that does not extend continuously in the width direction at least in the center in the width direction of the 1 st waist region. The leg elastic member overlaps the continuous elastic member in the thickness direction at a position outside at least any one of the discontinuous elastic members in the front-rear direction in the 1 st waist region.

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article.

Background

Conventionally, there is known an absorbent article having an absorbent core and a waist elastic member disposed in a state of being elongated in a width direction in a waist region (for example, refer to patent document 1).

The waist elastic member has a continuous elastic member and a discontinuous elastic member. The continuous elastic member continuously extends from one outer side portion of the waistline region to the other outer side portion in the width direction. The discontinuous elastic member does not extend continuously in the width direction at least in the region overlapping the absorbent core in the thickness direction.

By contraction of the continuous elastic member and the discontinuous elastic member, the waist region is brought into contact with the body of the wearer, and the waist region is restrained from being displaced toward the crotch side. On the other hand, in the region where the discontinuous elastic member does not extend continuously in the width direction, since the contraction force of the waist elastic member is reduced, the contraction of the absorbent core in the width direction can be suppressed. This ensures the absorption area of the absorbent core, thereby suppressing leakage of excrement from the waist opening side.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open publication No. 2013-123447

Disclosure of Invention

The absorbent article of patent document 1 has leg elastic members which are disposed outside the absorbent core in the width direction in the crotch region and are disposed in a state of being elongated in the front-rear direction. The crotch region is lifted up toward the body side of the wearer by contraction of the leg elastic members. However, the crotch region is not sufficiently lifted, and particularly the crotch region tends to sag after excretion due to the weight of the absorbent core that absorbs the excrement. The crotch region sags, whereby the absorbent core is separated from the wearer's body, and thus side leakage of excrement may occur.

Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an absorbent article having a continuous elastic member and a discontinuous elastic member in a waist region, wherein leakage of excrement due to sagging in a crotch region can be suppressed.

An absorbent article according to one embodiment comprises: a front-rear direction, a thickness direction, and a width direction orthogonal to the front-rear direction; a waistline region consisting of a 1 st waistline region and a 2 nd waistline region; and a crotch region sandwiched by the 1 st waist region and the 2 nd waist region in the front-rear direction; an absorbent core comprising an absorbent material and disposed in the crotch region and at least the 1 st waist region; a waist elastic member disposed in the waist region in a state of being elongated in the width direction; and leg elastic members disposed in the crotch region at positions outside the absorbent core in the width direction and extending in the front-rear direction. The waist elastic member has: a continuous elastic member continuously extending from one outer side portion of the 1 st waist region to the other outer side portion in the width direction; and a discontinuous elastic member that does not extend continuously in the width direction at least in the center of the 1 st waist region in the width direction. The leg elastic member overlaps the overlapping continuous elastic member in the thickness direction at a position outside of at least any one of the discontinuous elastic members in the front-rear direction in the 1 st waist region.

Drawings

Fig. 1 is a schematic front view of an absorbent article of the present embodiment.

Fig. 2 is a schematic plan view of the absorbent article of the present embodiment.

Fig. 3 is a schematic cross-sectional view of the absorbent article along the line F3-F3 in fig. 2.

Fig. 4 is a schematic cross-sectional view of the absorbent article along line F4-F4 in fig. 2.

Fig. 5 is a schematic plan view for explaining leg gathers.

Fig. 6 is a schematic plan view for explaining the leg side gathers.

Fig. 7 is a schematic cross-sectional view of an absorbent article along the front-rear direction.

Fig. 8 is a diagram for explaining leg gathers.

Fig. 9 is a diagram for explaining leg side gathers.

Detailed Description

(1) Summary of the embodiments

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

An absorbent article according to one embodiment comprises: a front-rear direction, a thickness direction, and a width direction orthogonal to the front-rear direction; a waistline region consisting of a 1 st waistline region and a 2 nd waistline region; a crotch region sandwiched between the 1 st waist region and the 2 nd waist region in the front-rear direction; an absorbent core comprising an absorbent material and disposed in the crotch region and at least the 1 st waist region; a waist elastic member disposed in the waist region in a state of being elongated in the width direction; and leg elastic members disposed in the crotch region at positions outside the absorbent core in the width direction and extending in the front-rear direction. The waist elastic member has: a continuous elastic member continuously extending from one outer side portion of the 1 st waist region to the other outer side portion in the width direction; and a discontinuous elastic member that does not extend continuously in the width direction at least in the center of the 1 st waist region in the width direction. The leg elastic member overlaps the continuous elastic member in the thickness direction at a position outside of at least any one of the discontinuous elastic members in the front-rear direction in the 1 st waist region.

The region overlapping the continuous elastic member in the thickness direction in the 1 st waist region is closely fitted to the wearer's body side by contraction of the continuous elastic member, and therefore is less likely to be displaced toward the crotch region side. Further, the leg elastic members disposed in the 1 st waist region are easily fixed at positions overlapping the continuous elastic members in the thickness direction. Thus, the leg elastic members disposed in the crotch region are lifted up toward the 1 st waist region side by contraction of the leg elastic members. The leg elastic members are lifted up to lift up the crotch region, so that sagging of the crotch region can be suppressed, and the crotch region can be brought closer to the wearer's body. Further, since the continuous elastic member overlaps the leg elastic members at positions outside in the front-rear direction of the discontinuous elastic member, the discontinuous elastic member can suppress contraction of the 1 st waist region in the width direction at positions inside (i.e., the crotch region side) in the front-rear direction of the continuous elastic member, and the absorption area can be ensured. Therefore, the side leakage of excrement due to sagging of the crotch region can be suppressed while suppressing the contraction of the 1 st waist region in the width direction.

According to a preferred aspect, the waist elastic member may have a 2 nd continuous elastic member continuously extending from one outer side portion to the other outer side portion of the 2 nd waist region in the width direction. The leg elastic member may be disposed in the 2 nd waist region at a position not overlapping the 2 nd continuous elastic member in the thickness direction. In this way, in the lying position in which the 1 st waist region is on the upper side and the 2 nd waist region is on the lower side, the position of the end portion on the 2 nd waist region side of the leg elastic member is not fixed by the 2 nd continuous elastic member, and therefore, the crotch region can be easily lifted up to the 1 st waist region side by the contraction of the leg elastic member while making the crotch region less likely to be pulled down to the 2 nd waist region side by the contraction of the leg elastic member. In this way, the crotch region can be easily brought closer to the wearer's body in the lying position, and leakage of excrement due to sagging of the crotch region can be suppressed.

According to a preferred embodiment, the 1 st waistline region may be a front waistline region disposed on the abdomen side of the wearer. The wearer often lies in a supine position (lying down) with the abdomen side up. Therefore, by making the crotch region easily lifted to the abdomen side by contraction of the leg elastic members, side leakage of excrement due to sagging of the crotch region can be easily suppressed in the lying posture.

According to a preferred aspect, the waist elastic member may have a 2 nd continuous elastic member continuously extending from one outer side portion to the other outer side portion of the 2 nd waist region in the width direction. The leg elastic member may be disposed in the 2 nd waist region at a position overlapping the 2 nd continuous elastic member in the thickness direction. Thus, the leg elastic members can be easily fixed to both the 1 st waist region and the 2 nd waist region. Therefore, the crotch region can be lifted up to the 1 st waist region and the 2 nd waist region by contraction of the leg elastic members, and side leakage of excrement due to sagging of the crotch region can be easily suppressed particularly in a standing posture.

According to a preferred aspect, the continuous elastic member may have an overlapping continuous elastic member overlapping the absorbent core in the thickness direction. The leg elastic member may overlap with the overlapping continuous elastic member in the thickness direction. Thus, the absorbent core overlapped with the overlapped continuous elastic members in the thickness direction is closely attached to the wearer's body side by contraction of the overlapped continuous elastic members, and thus is less likely to be displaced toward the crotch region side. The entire absorbent core (particularly, the absorbent core having absorbed excrement) can be prevented from being displaced toward the crotch region side due to the weight of the absorbent core. Further, the discontinuous elastic member can suppress contraction of the absorbent core in the width direction at the inner side (i.e., the crotch region side) in the front-rear direction with respect to the heavy continuous elastic member, and the absorbent area can be ensured.

According to a preferred embodiment, the continuous elastic member overlapping the leg elastic member in the thickness direction may be constituted by a plurality of elastic members arranged at intervals in the front-rear direction. The leg elastic member may overlap two or more elastic members of the plurality of elastic members in the thickness direction. The leg elastic members disposed in the 1 st waist region overlap with two or more overlapping continuous elastic members in the thickness direction, and thus are more easily fixed to the 1 st waist region. Thus, the leg elastic members disposed in the crotch region can be easily lifted up toward the 1 st waist region side by contracting the leg elastic members, and the crotch region can be easily lifted up.

According to a preferred embodiment, the 1 st waistline region is a front waistline region disposed on the abdomen side of the wearer, and the 2 nd waistline region is a rear waistline region disposed on the back side of the wearer. The absorbent article may have: a front outer body disposed in the front waistline region; a rear outer body disposed in the rear waistline region; and a side joint portion that joins an outer side portion of the front outer body in the width direction and an outer side portion of the rear outer body in the width direction. In the front waist region, the continuous elastic member overlapping the leg elastic members in the thickness direction may be disposed at a position rearward of a front end edge of the side joint in the front waist region and at a distance from the front end edge of 5% to 20% of the total length of the absorbent article in the front-rear direction. Thus, the continuous elastic member can be provided in a region where the depression of the lower abdomen end of the wearer is easily disposed. The gap between the wearer and the front outer body is easily generated in the depression at the lower end of the abdomen. However, by contraction of the continuous elastic member, the absorbent core can be easily folded in the front-rear direction, and the absorbent core can be disposed along the depression of the lower end of the abdomen of the wearer, thereby suppressing leakage.

According to a preferred aspect, the length in the front-rear direction of the portion of the leg elastic member overlapping the 1 st waist region in the thickness direction may be longer than the length in the front-rear direction of the portion of the leg elastic member overlapping the 2 nd waist region in the thickness direction. Thus, the leg elastic member is more closely attached to the body side by the 1 st waist region, and therefore the leg elastic member is more easily fixed in the 1 st waist region. Thus, the leg elastic members disposed in the crotch region are easily lifted up toward the 1 st waist region by contraction of the leg elastic members, and the absorbent core can be brought closer to the body of the wearer.

According to a preferred aspect, in the waist elastic member, a contraction force of the continuous elastic member overlapping the leg elastic member in the thickness direction may be maximized. In this way, in the region where the continuous elastic member is disposed, the force of close contact with the wearer's body side by contraction of the continuous elastic member is strong, and therefore, the crotch region side is less likely to be displaced. This makes it possible to firmly fix the leg elastic members while suppressing the shift of the 1 st waist region toward the crotch region.

According to a preferred aspect, the contraction force of the continuous elastic member overlapping the leg elastic member in the thickness direction may be larger than the contraction force of the leg elastic member. Thereby, the leg elastic member can be firmly fixed at a position where the leg elastic member overlaps the continuous elastic member in the thickness direction. The crotch region can be reliably lifted up by the contraction force of the leg elastic members, and sagging of the crotch region can be suppressed.

According to a preferred aspect, the absorbent article may have an absorbent body comprising the absorbent core. The absorber may have a low basis weight region in which the weight per unit area of the absorbent material is lower than that of the surrounding region. The overlapping continuous elastic member may overlap the low basis weight region in the thickness direction. Since the rigidity of the low weight-per-unit area region is lower than that of the surroundings, the contractive force of the continuous elastic member overlapped with the leg elastic member in the thickness direction is less likely to be hindered by the rigidity of the absorber. By contraction of the continuous elastic member, the portion of the absorber in the low basis weight region can be brought closer to the wearer's body side, and the 1 st waist region can be fitted to the wearer's body. In particular, since the absorbent material in the low basis weight region has a lower basis weight than the surrounding area, the portion of the absorbent body in the low basis weight region is less likely to expand even if the absorbent body absorbs excrement. Therefore, the contraction of the continuous elastic member is not easily hindered even after the excretion, and the 1 st waist region can be fitted to the body of the wearer even after the excretion. As a result, the shift of the 1 st waist region to the crotch region can be suppressed, and the leakage of excrement from the waist opening side can be suppressed.

According to a preferred embodiment, the discontinuous elastic member further includes an outer discontinuous elastic member disposed at a position outside the continuous elastic member overlapping the leg elastic member in the thickness direction in the front-rear direction. Thus, the 1 st waist region can be attached to the body side of the wearer without being tightened to the body side of the wearer on the central side in the width direction of the 1 st waist region on the outer side in the front-rear direction than the continuous elastic member, and the 1 st waist region can be attached along the body of the wearer by contraction of the outer discontinuous elastic member on the outer side of the wearer.

(2) Overall outline structure of absorbent article

The absorbent article according to the embodiment will be described below with reference to the drawings. In the description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. It should be noted, however, that the drawings are schematic, and that the ratio of the respective dimensions and the like are different from the actual ratio and the like. Therefore, specific dimensions and the like should be judged with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and proportions from each other.

Fig. 1 is a schematic front view of an absorbent article of the present embodiment. Fig. 2 is a schematic plan view of the absorbent article of the present embodiment. The schematic top view shown in fig. 2 shows such an elongated state: in a state where the later-described side joint portions are released from the joint, the absorbent article 1 is stretched to a state where no wrinkles are formed. Fig. 3 is a schematic cross-sectional view of an absorbent article along the front-rear direction. Specifically, fig. 3 is a schematic cross-sectional view of the absorbent article along the line F3-F3 in fig. 2. The F3-F3 line is a line along the front-rear direction L passing through the center in the width direction W of the absorbent article. Fig. 4 is a schematic cross-sectional view of an absorbent article along the front-rear direction. Specifically, fig. 4 is a schematic cross-sectional view of the absorbent article along the line F4-F4 in fig. 2. The line F4-F4 is a line along the leg-side elastic member described later. Fig. 5 is a schematic plan view for explaining leg gathers. Fig. 6 is a schematic plan view for explaining the leg side gathers. Fig. 7 is a schematic cross-sectional view of an absorbent article along the front-rear direction. Specifically, fig. 7A is a schematic top view of the absorbent article along line F7-F7 in fig. 2. The F7-F7 line is a line along the width direction W passing through the center in the front-rear direction L of the absorbent article. Fig. 7B is a schematic cross-sectional view of the absorbent article for explaining a state in which the leg side gathers are raised. Fig. 8 is a diagram for explaining leg gathers. Fig. 8A is a view for explaining leg gathers in a conventional absorbent article. Fig. 8B is a diagram for explaining leg gathers in the absorbent article 1 of the embodiment. Fig. 8 shows a lying posture in which the front waistline region S1 is on the upper side and the rear waistline region S2 is on the lower side. In fig. 8, "BL" represents a line of the body of the wearer, and "20L" represents a contour line of the absorbent main body 20. Fig. 9 is a diagram for explaining leg side gathers. Fig. 9A is a view for explaining leg gathers in a conventional absorbent article. Fig. 9B is a diagram for explaining leg gathers in the absorbent article 1 of the embodiment. Note that members not shown in the drawings are present for convenience of description. For example, in fig. 5, the leg gathers are mainly described, and therefore, for example, the leg elastic members are omitted from illustration. Similarly, in fig. 6, the leg side gathers are mainly described, and therefore, for example, illustration of the leg elastic members is omitted. In addition, it should be noted that even though the members are shown separated in the thickness direction for convenience of explanation, they are in contact in the thickness direction in an actual product.

The absorbent article 1 is, for example, a pants-type disposable diaper, a belt-type disposable diaper, a pants-type sanitary napkin, or the like. The absorbent article 1 of the embodiment is a pants-type disposable diaper. As shown in fig. 1, the absorbent article 1 has a front-rear direction L and a width direction W orthogonal to the front-rear direction L. The front-rear direction L is defined by a direction extending toward the front side of the body and the rear side of the body. In other words, the front-rear direction L is a direction extending in the front-rear direction in the unfolded absorbent article 1. The absorbent article 1 has a thickness direction T orthogonal to both the front-back direction L and the width direction W. The thickness direction T extends toward the skin surface side T1 facing the wearer side and the non-skin surface side T2 opposite to the skin surface side.

The absorbent article 1 has: a waistline region composed of a 1 st waistline region and a 2 nd waistline region, and a crotch region S3 sandwiched by the 1 st waistline region and the 2 nd waistline region in the front-rear direction. In the present embodiment, the 1 st waistline region is a front waistline region S1 disposed on the abdomen side of the wearer. The front waistline region S1 is a region opposed to the front waistline (abdomen) of the wearer. The 2 nd waistline region is a rear waistline region S2 disposed on the back side of the wearer. The rear waistline region S2 is a region opposed to the rear waistline (back) of the wearer. The rear waistline region S2 includes a region on which the body (buttocks) is placed when worn. The crotch region S3 is a region located in the crotch of the wearer and disposed between the front waistline region S1 and the back waistline region S2.

The absorbent article 1 may have an absorbent main body 20 and an outer body 50. The absorbent main body 20 may be formed separately from the outer body 50. The absorbent main body 20 is disposed at least in the crotch region S3. The absorbent main body 20 extends from the crotch region S3 in the front-rear direction L at least toward the front waistline region S1. The absorbent main body 20 may extend throughout the front waistline region S1, the back waistline region S2, and the crotch region S3. The absorbent main body 20 overlaps with the outer body 50 in the thickness direction T in the front waistline region S1 and the back waistline region S2. The outer body 50 is disposed at least in the waistline region. The outer body 50 may be composed of a front outer body 50A disposed in the front waistline region S1 and a rear outer body 50B disposed in the rear waistline region S2. The outer body 50 may have a waist elastic member 55 described later.

As shown in fig. 1, the absorbent article 1 may have a side joint 16, and the side joint 16 may join an outer side portion in the width direction W of the front outer body 50A and an outer side portion in the width direction W of the rear outer body 50B, which are disposed in the front waistline region S1. The side joint 16 is defined by a portion where the outer side of the front outer case 50A and the outer side of the rear outer case 50B are engaged with each other. The side joint 16 may extend in the front-rear direction L in the front outer case 50A and the rear outer case 50B, respectively. As shown in fig. 1, in a state where the side joint portions 16 are formed, a waist opening 17 through which the torso of the wearer passes and a pair of leg hole openings 18 through which the legs of the wearer are respectively inserted are formed in the absorbent article 1. The waist opening 17 may be defined by a front end edge S1F of the front waistline region S1 and a rear end edge S2R of the rear waistline region S2.

In the pants-type absorbent article 1, the crotch region S3 may be defined by the inner edge of the side joint 16 in the front-rear direction L. The boundary between the front waistline region S1 and the crotch region S3 may be defined by the rear end edge 16R of the side joint 16 in the front waistline region S1. The boundary between the rear waistline region S2 and the crotch region S3 may be defined by the front end edge 16F of the side joint 16 in the rear waistline region S2. Further, the crotch region S3 may be defined by a region where the leg-surrounding opening 18 is provided. The leg hole opening 18 is a portion recessed inward in the width direction W from the outer edge of the absorbent article 1. The boundary between the front waistline region S1 and the crotch region S3 may be defined by the front end edge of the leg hole opening 18. The boundary between the rear waistline region S2 and the crotch region S3 may be defined by the rear end edge of the leg hole opening 18.

In the present specification, the outer side portion refers to a portion that occupies a certain range in the width direction W including an outer edge in the width direction W, and the outer edge refers to an outer edge in the width direction W. The inner side in the present specification means a portion that occupies a certain range in the width direction W including an inner edge in the width direction W, and the inner edge means an inner edge in the width direction W. In the present specification, the front end portion and the rear end portion are portions that occupy a certain range in the front-rear direction L, including edges 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 end portion includes a front end portion and a rear end portion, and the outer end edge includes a front end edge and a rear end edge.

The absorbent main body 20 may have an absorber 30, a surface sheet 41, a back sheet 42, and leg side sheets 47. In an embodiment, the absorbent main body 20 has leg gathers 70 and leg side gathers 80. The absorbent body 30 has at least an absorbent core 31. The absorbent core 31 contains an absorbent material. The absorbent core 31 may comprise, for example, comminuted pulp or superabsorbent polymers (SAP) or mixtures of the above materials. As shown in fig. 2, the absorbent core 31 is disposed in the crotch region S3. The absorbent core 31 may be disposed in the front waistline region S1 or in the back waistline region S2. As shown in fig. 2, fig. 3, and the like, the absorbent core 31 may extend throughout from the front waistline region S1 to the back waistline region S2 in the front-back direction L.

The absorber 30 may have a core cladding 32 covering the absorbent core 31. The core wrap 32 may cover the absorbent core 31 at least at the skin surface side T1 of the absorbent core 31. The absorbent core 31 may sandwich the absorbent core 31 in the thickness direction T. The core cladding 32 may cover the absorbent core 31 with the absorbent core 31 interposed therebetween in the width direction W. The core wrap 32 may not cover a part of the absorbent core 31 (for example, a part of the non-skin side T2 of the absorbent core 31). The core wrap 32 may be made of, for example, tissue or nonwoven.

The absorber 30 may have a low basis weight region LR in which the basis weight of the absorbent material is lower than that of the surrounding. In the present embodiment, the absorbent core 31 is not disposed in the thickness direction T but the core clad 32 is disposed in the low basis weight region LR. Therefore, the absorbent material in the low basis weight region LR has a basis weight of 0. The weight per unit area of the absorbent material being 0 means substantially 0, and the absorbent core 31 may be substantially absent in the low weight per unit area region LR. A portion of the absorbent core 31 adjacent to the low basis weight region LR in the width direction W may also exist by overflowing into the low basis weight region LR. Here, "surrounding" means the surrounding of the low basis weight region LR in the absorber 30, and does not include a region where the absorber 30 is not disposed.

The high basis weight region HR having a higher basis weight than the absorbent material of the low basis weight region LR may be present on both outer sides in the width direction W of the low basis weight region LR. In the present embodiment, the high basis weight region HR is a region where the absorbent core 31 exists. The high basis weight region HR in the front waistline region S1 may be the basis weight of the absorbent material equivalent to the region where the absorbent core 31 is present in the crotch region S3. For example, the difference between the basis weight of the absorbent material of the absorbent core 31 in the high basis weight region HR in the front waistline region S1 and the basis weight of the absorbent material of the absorbent core 31 in the crotch region S3 may be within 5%. The absorbent core 31 may have a compressed portion in which the absorbent core 31 is compressed in the thickness direction T. The compression portion may be provided in a high unit area weight region HR disposed on both outer sides in the width direction W of the low unit area weight region LR. The compressed portion may be, for example, a lattice compressed portion having a lattice-like pattern in a plan view of the absorbent core 31.

The topsheet 41 is positioned closer to the skin surface side T1 than the absorber 30. The top sheet 41 is disposed at the position closest to the skin surface side T1 and faces the skin of the wearer. The surface sheet 41 may be made of, for example, nonwoven fabric, and may have liquid permeability. As shown in fig. 7, the surface sheet 41 may be folded from the skin surface side T1 to the non-skin surface side T2 along the surface of the absorbent body 30. The surface sheet 41 may be composed of a plurality of sheets. When the top sheet 41 is composed of a plurality of sheets, the top sheet 41 may include a sheet disposed only on the skin side T1 of the absorber 30 and a sheet disposed not only on the skin side T1 of the absorber 30 but also on the non-skin side T2 of the absorber 30.

The back sheet 42 is positioned closer to the non-skin side T2 than the absorber 30. The back sheet 42 may be made of a film, for example, and may have liquid impermeability. As shown in fig. 7, the back sheet 42 may be disposed closer to the skin surface side T1 than the leg side sheet 47 in a region overlapping the absorber 30 in the thickness direction T. The back sheet 42 may be disposed at the position closest to the non-skin surface side T2.

The leg side pieces 47 are disposed outside the center in the width direction W of the absorbent core 31. The leg side pieces 47 are opposed to the skin of the wearer. The leg side sheet 47 may extend in the width direction W across the center in the width direction W of the absorbent article 1 at a position closer to the non-skin surface side T2 than the absorbent core 31. The leg side sheet 47 may be disposed on the non-skin side T2 of the back sheet 42 in a region overlapping the absorber 30 in the thickness direction T. The leg side sheet 47 may be made of, for example, nonwoven fabric.

As shown in fig. 7, the leg side pieces 47 may be constituted by one sheet member. The leg side pieces 47 can be folded back toward the skin surface side T1 on both outer sides of the absorbent main body 20. Specifically, the leg side pieces 47 may be folded back from the non-skin-surface side T2 to the skin-surface side T1 along the 1 st fold FL1 extending in the front-back direction L on both outer sides of the absorbent main body 20. The leg side sheet 47 may have a 1 st portion 471, and the 1 st portion 471 extends from the center in the width direction W of the absorbent main body 20 to the 1 st fold FL1 in the width direction W at a position closer to the non-skin surface side T2 than the absorbent body 30. The leg side panels 47 may also constitute the side end edges of the absorbent main body 20. In addition, the leg side sheet 47 may have a 2 nd portion 472 extending from the 1 st portion 471 to the 2 nd crease FL2 in the width direction W.

Further, the leg side pieces 47 may be folded back further so as to sandwich the leg side elastic members 85. Specifically, the leg side pieces 47 can be folded back from the skin surface side T1 to the non-skin surface side T2 along the 2 nd fold line FL2 extending in the front-back direction L. The leg side panel 47 may have a 3 rd portion 473 extending from the 2 nd crease FL2 to the 3 rd crease FL3 in the width direction W. The leg side pieces 47 may be folded back so as to sandwich front and rear fixing portions 811 described later. Specifically, the leg side pieces 47 can be folded back from the skin surface side T1 to the non-skin surface side T2 along the 3 rd fold line FL3 extending in the front-back direction L. The leg side sheet 47 may have a portion extending from the 3 rd fold line FL3 toward the absorbent core in the width direction W.

The outer body 50 (front outer body 50A and rear outer body 50B) is disposed closer to the non-skin surface side T2 than the absorbent main body 20. The outer case 50 may be constituted by a plurality of sheet members. The outer body 50 may have a sheet member disposed closer to the skin surface side T1 than the absorbent main body 20. The front outer body 50A may have a 1 st front side sheet 51F and a 2 nd front side sheet 52F disposed on the non-skin surface side T2 of the 1 st front side sheet 51F. The 1 st front side sheet 51F may be disposed closer to the non-skin surface side T2 than the waist elastic member 55. The 2 nd front side sheet 52F may be disposed closer to the skin surface side T1 than the waist elastic member 55. The 1 st front side sheet 51F may have a 1 st front folded portion 51FP formed by folding back an outer portion in the front-rear direction L toward the skin surface side T1. The 2 nd front side sheet 52F may have a 2 nd front folded portion 52FP formed by folding back an outer portion in the front-rear direction L toward the skin surface side T1. The 1 st front folded-back portion 51FP may be positioned closer to the skin surface side T1 than the 2 nd front side sheet 52F. The 1 st front side sheet 51F and the 2 nd front side sheet 52F may be made of nonwoven fabric, for example.

The rear outer body 50B can be separated from the front outer body 50A in the front-rear direction L. The rear outer body 50B may be disposed closer to the non-skin surface side T2 than the absorbent main body 20. The back outer body 50B may have a 1 st back side sheet 51R and a 2 nd back side sheet 52R disposed closer to the non-skin surface side T2 than the 1 st back side sheet 51R. The 1 st back side sheet 51R may be disposed closer to the non-skin surface side T2 than the waist elastic member 55. The 2 nd back side sheet 52R may be disposed closer to the skin surface side T1 than the waist elastic member 55. The 1 st back side sheet 51R may have a 1 st front folded portion 51FP formed by folding back an outer portion in the front-back direction L toward the skin surface side T1. The 1 st rear fold-back portion 51RP may be located closer to the skin surface side T1 than the 2 nd front side sheet 52F. The 1 st back side sheet 51R and the 2 nd back side sheet 52R may be made of, for example, nonwoven fabric.

The outer body 50 has a waist elastic member 55 disposed in a state of being elongated in the width direction W in the waist region. The waist elastic member 55 may be constituted by a linear or rope-like elastic member extending in the width direction W. The length of the linear or string-like elastic member in the front-rear direction L (i.e., the thickness of the elastic member) may be, for example, less than 5mm. The waist elastic member 55 may have a continuous elastic member 55C and a discontinuous elastic member 55N.

The continuous elastic member 55C continuously extends from one outer side portion of the front waistline region S1 (or the rear waistline region S2) to the other outer side portion in the width direction W. Further, the continuous elastic member 55C disposed in the 1 st waist region, which is one of the front waist region S1 and the rear waist region S2, of the continuous elastic members 55C may be referred to as a 1 st continuous elastic member, and the continuous elastic member 55C disposed in the 2 nd waist region, which is the other region, may be referred to as a 2 nd continuous elastic member. For example, the continuous elastic member disposed in the front waistline region S1 is the 1 st continuous elastic member, and the continuous elastic member disposed in the rear waistline region S2 is the 2 nd continuous elastic member. The "1 st continuous elastic member" of the present embodiment is an elastic member disposed so as to extend continuously from one outer side portion to the other outer side portion of the front waistline region in the width direction W. The "2 nd continuous elastic member" of the present embodiment is an elastic member disposed so as to extend continuously from one outer side portion to the other outer side portion of the back waist region in the width direction W. Further, the 1 st continuous elastic member of the embodiment constitutes "continuous elastic member" in the claims, and the 2 nd continuous elastic member of the embodiment constitutes "2 nd continuous elastic member" in the claims. In the following description, the continuous elastic member includes a 1 st continuous elastic member and a 2 nd continuous elastic member.

The continuous elastic member (1 st continuous elastic member and 2 nd continuous elastic member) 55C may have an overlapped continuous elastic member 55CO and a non-overlapped continuous elastic member 55CN. The overlapped continuous elastic members 55CO may overlap the absorbent core 31 in the thickness direction T at positions outside at least any one of the discontinuous elastic members 55N in the front-rear direction L. In the embodiment, the overlapped continuous elastic member 55CO overlaps the absorbent core 31 in the thickness direction T at a position outside in the front-rear direction L than an inside discontinuous elastic member 55NA described later. The discontinuous elastic member 55N may have a 1 st discontinuous elastic member disposed in a 1 st waist region and a 2 nd discontinuous elastic member disposed in a 2 nd waist region. Further, the 1 st discontinuous elastic member constitutes the "discontinuous elastic member" in the claims. In the following description, the discontinuous elastic member includes the 1 st continuous elastic member and the 2 nd continuous elastic member.

As shown in fig. 5, in the embodiment, the continuous elastic member 55C overlaps the leg elastic member 75 at a position outside at least any one of the discontinuous elastic members 55N in the front-rear direction L. Further, at least the 1 st continuous elastic member of the continuous elastic members 55C may overlap the leg elastic members 75 at a position outside in the front-rear direction L than the discontinuous elastic members 55N. In the embodiment, in the front waist region, the overlapped continuous elastic member 55CO overlaps the leg elastic member 75 in the thickness direction T. Hereinafter, as an example of the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T, an overlapping continuous elastic member 55CO will be described as an example. The overlapped continuous elastic member 55CO may overlap the low basis weight region LR in the thickness direction T. On the other hand, the non-overlapping continuous elastic member 55CN may not overlap the absorbent core 31 in the thickness direction T. Further, in the embodiment, the non-overlapping continuous elastic member 55CN is not overlapped with the absorbent main body 20 in the thickness direction T. The non-overlapping continuous elastic member 55CN may include an elastic member that overlaps the absorbent main body 20 in the thickness direction T.

The overlapped continuous elastic member 55CO may be constituted by a plurality of elastic members arranged at intervals in the front-rear direction L. In the embodiment, the overlapped continuous elastic member 55CO is constituted by four elastic members. The overlapped continuous elastic members 55CO may be disposed at positions rearward of the front end edge 16F of the side joint 16 in the front waistline region S1 and at a distance from the front end edge 16F of 5% to 20% of the entire length (from the front end edge to the rear end edge of the absorbent article 1) in the front-rear direction L of the absorbent article 1. In the front waistline region S1, the overlapping continuous elastic member 55CO may be disposed at a position forward of the rear end edge 16R of the side joint 16 in the front waistline region S1 and at a distance of 20% to 90% of the total length of the side joint 16 in the front-rear direction L, preferably at a position forward of the rear end edge 16R and at a distance of 40% to 70% of the total length of the side joint 16 in the front-rear direction L, more preferably at a position forward of the rear end edge 16R and at a distance of 45% to 65% of the total length of the side joint 16 in the front-rear direction L.

The continuous elastic member 55C may have an inner continuous elastic member 55CI. The inner continuous elastic member 55CI is disposed at a position further inward in the front-rear direction L than an inner end edge 811E of a front-rear fixing portion 811 described later. As in the present embodiment, the overlapped continuous elastic member 55CO may have an inner continuous elastic member 55CI. Therefore, the inner continuous elastic member 55CI may overlap the absorbent core 31 in the thickness direction T. In addition, the inner continuous elastic member 55CI may overlap the low basis weight region LR in the thickness direction T.

The inner continuous elastic member 55CI may be disposed at a position rearward of the front end edge 16F of the side joint 16 in the front waistline region S1 and at a distance from the front end edge 16F of 5% to 20% of the entire length in the front-rear direction L of the absorbent article 1, like the overlapping continuous elastic member 55 CO. Similarly, in the front waistline region S1, the inner continuous elastic member 55CI may be disposed at a position forward of the rear end edge 16R of the side joint 16 in the front waistline region S1 and at a distance of 20% to 90% of the total length of the side joint 16 in the front-rear direction L, preferably at a position forward of the rear end edge 16R and at a distance of 40% to 70% of the total length of the side joint 16 in the front-rear direction L, more preferably at a position forward of the rear end edge 16R and at a distance of 45% to 65% of the total length of the side joint 16 in the front-rear direction L.

The inner continuous elastic member 55CI may be constituted by a plurality of elastic members adjacent in the front-rear direction L. In the present embodiment, two elastic members, which are arranged on the inner side in the front-rear direction L, among the four elastic members constituting the overlapped continuous elastic member 55CO are the inner continuous elastic member 55CI. Accordingly, the inner continuous elastic member 55CI has the 1 st inner continuous elastic member 55CIA and the 2 nd inner continuous elastic member 55CIB. The 1 st inner continuous elastic member 55CIA is disposed at the innermost position in the front-rear direction L in the inner continuous elastic member 55CI. The 2 nd inner continuous elastic member 55CIB is adjacent to the 1 st inner continuous elastic member 55CIA on the outer side in the front-rear direction L of the 1 st inner continuous elastic member 55 CIA.

In the waist elastic member 55, the contraction force of the inner continuous elastic member 55CI may be maximized. In the waist elastic member 55, the 1 st inner continuous elastic member 55CIA may have the largest contraction force. The waist elastic member 55 is an elastic member including a 1 st continuous elastic member and a 2 nd continuous elastic member. In the present specification, the shrinkage force of the elastic member can be measured by, for example, the following method. The length H0 of the effective length portion of the elastic member in a state where the absorbent article 1 is elongated to the maximum extent in the front-rear direction L and the width direction W to such an extent that wrinkles generated in the absorbent article 1 cannot be visually recognized is measured. Next, the elastic member is detached from the absorbent article 1, and the length H1 of the effective length portion of the elastic member is measured. Then, the contraction force of the elastic member can be calculated by "contraction force=h0/H1".

The continuous elastic member 55C may have a stretchable sheet 55CS that continuously extends from one outer side portion to the other outer side portion of the front waistline region S1 in the width direction W. The expansion sheet 55CS is a sheet-like elastic member. The length of the stretchable sheet 55CS in the front-rear direction L may be, for example, 5mm or more. The stretchable sheet 55CS may be made of, for example, a stretchable resin film, a stretchable nonwoven fabric, or a combination of the above materials. The stretchable sheet 55CS has stretchability at least in the width direction W, and is disposed in a state of being stretched in the width direction W. The stretchable panel 55CS may be disposed between the 1 st front side panel 51F and the 2 nd front side panel 52F in the thickness direction T. The stretchable sheet 55CS may be disposed closer to the skin surface side T1 than the linear or string-like waist elastic member 55.

The outer side portion of the stretchable panel 55CS in the width direction W may be fixed to the 1 st front side panel 51F and/or the 2 nd front side panel 52F by the side joint 16 in a state where the stretchable panel 55CS is stretched in the width direction W. Further, the stretchable sheet 55CS may be fixed to at least a part of the main surface of the stretchable sheet 55CS and the 1 st front side sheet 51F and/or the 2 nd front side sheet 52F by an adhesive portion (not shown) such as a Hot Melt Adhesive (HMA) or an ultrasonic sealing portion.

The discontinuous elastic member 55N does not extend continuously in the width direction W at least in the center in the width direction W of the waistline region. The center in the width direction W of the waist region is a region from at least one outer end to the other outer end of the absorbent core 31. In the region where the discontinuous elastic member 55N does not extend continuously in the width direction W, the contraction force in the width direction W is reduced as compared with the region where the discontinuous elastic member 55N extends continuously in the width direction W. As a method of providing a region where the discontinuous elastic member 55N does not extend continuously in the width direction W, for example, the following method can be used.

In the method 1, the contracted region can be reduced by not disposing the discontinuous elastic member 55N in the stretched state. For example, an adhesive (for example, a Hot Melt Adhesive (HMA)) for fixing the discontinuous elastic member 55N is disposed in a region where the discontinuous elastic member 55N is disposed in an extended state, and an adhesive for fixing the discontinuous elastic member 55N is not disposed in a region where the contraction force is reduced (hereinafter, low contraction region LER). Thus, in the region where the adhesive is disposed, the discontinuous elastic member 55N is fixed in an elongated state. In the region where the adhesive is not disposed and the region sandwiched by the regions where the adhesive is disposed in the width direction W, the stretched state of the discontinuous elastic member 55N is maintained, and therefore, the discontinuous elastic member 55N is cut in this region, whereby the cut discontinuous elastic member 55N is contracted. Thus, the low-contraction region LER can be provided without disposing the discontinuous elastic member 55N having contractibility (i.e., in an extended state) in the low-contraction region LER. Therefore, in the low shrinkage region LER, the discontinuous elastic member 55N does not extend continuously in the width direction W.

Further, in the case where the low shrinkage region LER (hereinafter, the 1 st low shrinkage region LER 1) is provided by the 1 st method described above, the discontinuous elastic member 55N may have a fixed portion and a non-fixed portion. The fixed portion is a portion arranged in an elongated state. The non-fixed portion is a portion that is not fixed in an elongated state but exists in a natural state. In method 2, the contraction force of the discontinuous elastic member 55N may be reduced by cutting (dicing) the discontinuous elastic member 55N fixed to the low contraction region LER at a plurality of positions. Thus, the discontinuous elastic member 55N does not extend continuously in the width direction W. In this case, even if the discontinuous elastic member 55N is fixed in an extended state, the contraction force of the discontinuous elastic member 55N decreases. Further, since the discontinuous elastic member 55N having the residual contraction force is arranged (fixed) in the low contraction region LER (hereinafter, the 2 nd low contraction region LER 2) set by the above-described 2 nd method, the contraction force of the 2 nd low contraction region LER2 is generally larger than the contraction force of the 1 st low contraction region LER 1.

The discontinuous elastic member 55N may have an inner discontinuous elastic member 55NA and an outer discontinuous elastic member 55NB. The inner discontinuous elastic member 55NA is disposed at a position further inward in the front-rear direction L than the overlapping continuous elastic member 55 CO. The outer discontinuous elastic member 55NB is disposed at a position outside the overlapping continuous elastic member 55CO in the front-rear direction L.

As shown in fig. 5, in the embodiment, the 1 st low shrinkage region LER1 is provided by using the 1 st method so that the inner discontinuous elastic member 55NA does not extend continuously in the width direction W. The inner discontinuous elastic member 55NA having contractibility in the width direction W is not arranged in the 1 st low contraction region LER1. Inside discontinuous elastic members 55NA are arranged on both outer sides in the width direction W of the 1 st low shrinkage region LER1. On the other hand, the 2 nd low shrinkage region LER2 is provided by making the outer discontinuous elastic member 55NB not continuously extend in the width direction W by the 2 nd method. An outer discontinuous elastic member 55NB is disposed in the 2 nd low shrinkage region LER2. The contraction force of the outer discontinuous elastic member 55NB disposed at the 2 nd low contraction region LER2 is lower than the contraction force of the outer discontinuous elastic member 55NB disposed at a position further to the outer side than the 2 nd low contraction region LER2 in the width direction W.

The leg gathers 70 are described next. The leg gathers 70 are gathers provided on the outer side in the width direction W of the absorbent core 31. The leg gathers 70 may be provided around the leg hole openings 18 and the leg hole openings 18. The leg gathers 70 may be provided on the non-skin side T2 of the leg side gathers 80. The leg gathers 70 are lifted toward the body side of the wearer by contraction of the leg elastic members 75. The leg gathers 70 have leg elastic members 75. The leg elastic members 75 are disposed outside the absorbent core 31 in the width direction W in the crotch region S3. The leg elastic members 75 are arranged in an elongated state in the front-rear direction L. The leg elastic members 75 extend in the front-rear direction L at least in the crotch region S3. The leg elastic member 75 is disposed in the front waistline region S1. The leg elastic member 75 may be disposed in the rear waistline region S2.

As shown in fig. 7, in the present embodiment, the leg elastic members 75 may be disposed on the leg side panels 47. The leg elastic members 75 may be disposed between the leg side pieces 47 and the back surface piece 42 in the thickness direction T. Further, the leg elastic members 75 may be arranged to be sandwiched by the leg side pieces 47 in the thickness direction T. Some of the plurality of leg elastic members 75 (for example, the leg elastic members 75 disposed on the outermost side in the width direction W) may be disposed so as to be sandwiched by the leg side pieces 47 in the thickness direction T. The leg elastic members 75 may be fixed to the leg side pieces 47 or to the back sheet 42. Accordingly, the leg gathers 70 may include leg side panels 47 in addition to leg elastic members 75. The leg gathers 70 may also include leg elastic members 75, leg side panels 47, and back panel 42. The leg elastic members 75 may be disposed on other sheet members (other sheet members than the back sheet 42 and the leg side sheet 47) in the thickness direction T, and the other sheet members may be disposed on the outer side in the width direction W than the absorbent core 31.

As shown in fig. 5, in the embodiment, the leg elastic member 75 overlaps the continuous elastic member 55C in the thickness direction T at a position outside at least any one of the discontinuous elastic members 55N in the front-rear direction L. The leg elastic members may overlap the overlapping continuous elastic members 55CO in the thickness direction T. The leg elastic member 75 may overlap two or more elastic members among the plurality of elastic members constituting the overlapping continuous elastic member 55CO in the thickness direction T. In fig. 5, the leg elastic members 75 overlap with four overlapping continuous elastic members 55CO in the thickness direction T. In addition, the leg elastic member 75 overlaps the inner continuous elastic member 55CI in the thickness direction T. In addition, the leg elastic members 75 may overlap with the discontinuous elastic members 55N in the thickness direction T. The leg elastic member 75 may overlap the inner discontinuous elastic member 55NA in the thickness direction T. The leg elastic members 75 may be disposed at positions that do not overlap the outer discontinuous elastic members 55NB in the thickness direction T.

The leg elastic member 75 may overlap the stretchable sheet 55CS as the continuous elastic member 55C in the thickness direction T. Therefore, the inner end edge of the expansion and contraction sheet 55CS in the front-rear direction L may be located inside the outer end edge of the leg elastic member 75 in the front-rear direction L. Further, the leg elastic members 75 may be disposed in the rear waistline region S2 at positions that do not overlap with the continuous elastic member 55C in the thickness direction T. The leg elastic members 75 may overlap the discontinuous elastic members 55N in the thickness direction T in the back waist region S2, or may be disposed at positions not overlapping the discontinuous elastic members 55N.

As shown in fig. 5, the length L1 in the front-rear direction L of the portion of the leg elastic member 75 overlapping the front waistline region S1 in the thickness direction T may be longer than the length L2 in the front-rear direction L of the portion of the leg elastic member 75 overlapping the rear waistline region S2 in the thickness direction T. Further, in the case where the leg elastic member 75 overlaps the front waistline region S1 and does not overlap the rear waistline region S2 in the thickness direction T, the length l2=0, and therefore the length L1 is longer than the length L2.

In the waist elastic member 55, the contraction force of the overlapped continuous elastic member 55CO overlapped with the leg elastic member 75 in the thickness direction T may be the largest. When the overlapped continuous elastic member 55CO is constituted by a plurality of elastic members, the contraction force of any one of the plurality of elastic members may be the largest in the waist elastic member 55. Of the overlapped continuous elastic members 55CO overlapped with the leg elastic members 75 in the thickness direction T, the overlapped continuous elastic member 55CO located innermost in the front-rear direction L (1 st inner continuous elastic member 55CIA constituting the innermost continuous elastic member in fig. 5) may have the largest contraction force.

Further, the contraction force of the overlapped continuous elastic member 55CO overlapped with the leg elastic member 75 in the thickness direction T may be larger than the contraction force of the leg elastic member 75. The contraction force of one or more overlapped continuous elastic members 55CO among the overlapped continuous elastic members 55CO may be larger than the contraction force of the leg elastic members 75. It is possible that all of the overlapping continuous elastic members 55CO have a larger contraction force than the leg elastic members 75. Alternatively, the contraction force of the leg elastic member 75 may be larger than the contraction force of the overlapped continuous elastic member 55CO overlapped with the leg elastic member 75 in the thickness direction T.

Here, as shown in fig. 8A, in the conventional absorbent article, the leg elastic member 75 does not overlap with the continuous elastic member 55C in the thickness direction T. In this case, in the front waistline region S1, the force to the skin surface side T1 is not sufficiently applied to the leg elastic members 75, and therefore, the position of the leg elastic members 75 is difficult to fix. Therefore, the leg elastic members 75 are easily separated from the body or easily moved rearward in the front-rear direction L. Accordingly, by the leg elastic members 75 contracting, not only a force in the direction toward the front waistline region S1 but also a force in the direction toward the rear waistline region S2 acts on the leg elastic members 75. As a result, as shown in fig. 8A, when the wearer lifts his/her legs in the supine position, the leg elastic members 75 disposed in the crotch region S3 do not sufficiently lift up toward the front waistline region S1, and the crotch region S3 tends to be easily maintained in a sagging state as shown by the contour line 20L of the absorbent main body 20. In this case, since the absorbent core 31 is separated from the wearer's body, there is a possibility that side leakage of excrement occurs. Particularly, after the excretion, the crotch region S3 sags due to the weight of the absorbent core 31 that absorbs the excreta, and therefore the excreta that the absorbent core 31 fails to absorb may leak in the width direction W in the crotch region S3.

As described above, in the embodiment, the leg elastic member 75 overlaps the continuous elastic member 55C in the thickness direction T. Since the leg elastic members 75 are biased toward the skin surface side T1 by contraction of the continuous elastic member 55C, the leg elastic members 75 disposed in the front waistline region S1 are easily fixed at the positions P1 overlapping the continuous elastic member 55C in the thickness direction T as shown in fig. 8B. As a result, the leg elastic member 75 contracts, and the leg elastic member 75 is urged in the direction toward the position P1. Therefore, for example, as shown in fig. 8B, when the wearer lifts his or her legs in the supine position, the leg elastic members 75 disposed in the crotch region S3 are lifted up toward the front waistline region S1. In fig. 8A, the crotch region S3 is lifted up by lifting up the leg elastic members 75 as shown by the outline 20L of the absorbent main body 20. As a result, sagging of the crotch region S3 can be suppressed, and the absorbent core 31 can be brought close to the wearer' S body.

Further, the region overlapping the continuous elastic member 55C in the thickness direction T is closely attached to the wearer' S body side by contraction of the continuous elastic member 55C, and therefore is less likely to be displaced toward the crotch region S3 side. Further, the continuous elastic member 55C overlaps the leg elastic member 75 at a position outside in the front-rear direction L than the inner discontinuous elastic member 55 NA. In the region where the inner discontinuous elastic member 55NA does not extend continuously in the width direction W, the contraction force is reduced as compared with the portion where the inner discontinuous elastic member 55NA extends continuously, and therefore, the front waistline region S1 can be restrained from contracting in the width direction W at a position further inward in the front-rear direction L (i.e., the crotch region S3 side) than the continuous elastic member 55C (the overlapping continuous elastic member 55CO in the embodiment), thereby securing the absorption area. Therefore, the contraction of the front waistline region S1 in the width direction W can be suppressed, and the side leakage of excrement due to sagging of the crotch region S3 can be suppressed.

In addition, the leg elastic members 75 may be disposed in a position that does not overlap the continuous elastic member 55C in the thickness direction T in the back waistline region S2. As a result, as shown in fig. 8A, in a lying position in which the front waistline region S1 is on the upper side and the rear waistline region S2 is on the lower side, the position of the end portion of the leg elastic member 75 on the rear waistline region S2 side is not fixed by the continuous elastic member 55C of the rear waistline region S2, and therefore, the crotch region S3 can be easily lifted up toward the front waistline region S1 side by the contraction of the leg elastic member 75 while making the crotch region S3 less likely to be pulled down toward the rear waistline region S2 side by the contraction of the leg elastic member 75. In this way, in the lying posture, the front waistline region S1 can be easily brought close to the body of the wearer, and side leakage of excrement due to sagging of the crotch region S3 can be suppressed.

In addition, the 1 st waistline region where the leg elastic member 75 overlaps the continuous elastic member 55C in the thickness direction T may be the front waistline region S1. The wearer often lies in a supine position (lying down) with the abdomen side up. Therefore, by easily lifting the crotch region S3 to the abdomen side by contraction of the leg elastic members 75, side leakage of excrement due to sagging of the crotch region S3 can be easily suppressed in the lying posture.

In addition, the leg elastic member 75 may have overlapping continuous elastic members 55CO. As a result, the absorbent core overlapped with the overlapped continuous elastic member 55CO in the thickness direction is closely attached to the wearer's body side by contraction of the overlapped continuous elastic member 55CO, and therefore is less likely to be displaced toward the crotch region side. It is possible to suppress the entire absorbent core 31 from being displaced toward the crotch region side due to the weight of the absorbent core 31 (particularly, the absorbent core 31 having absorbed excrement). Further, the inner discontinuous elastic member 55NA can suppress contraction of the absorbent core 31 in the width direction at a position on the inner side (i.e., the crotch region S3 side) in the front-rear direction L of the heavy continuous elastic member 55CO, thereby securing the absorbent area.

Further, the leg elastic member 75 may overlap two or more elastic members among the plurality of elastic members constituting the continuous elastic member 55C in the thickness direction T. The leg elastic members 75 disposed in the front waistline region S1 overlap two or more continuous elastic members 55C in the thickness direction T, and are thus more easily fixed to the front waistline region S1. As a result, the leg elastic members 75 are contracted, so that the leg elastic members 75 disposed in the crotch region S3 are easily lifted up toward the front waistline region S1, and the crotch region S3 can be easily lifted up.

In the front waistline region S1, the continuous elastic member 55C overlapping the leg elastic members 75 in the thickness direction T may be disposed at a position rearward of the front end edge 16F of the side joint 16 in the front waistline region S1 and at a distance from the front end edge 16F of 5% to 20% of the total length of the absorbent article 1 in the front-rear direction L. Thus, the continuous elastic member 55C can be provided in a region where the depression of the lower abdomen end of the wearer is easily arranged. Since the depression at the lower end of the abdomen of the wearer easily generates a gap between the wearer and the front outer body 50A, the absorber 30 (absorbent core 31) can be easily folded in the front-rear direction L along the depression at the lower end of the abdomen of the wearer. As a result, the absorber 30 can be disposed along the abdomen that bulges from the depression of the lower end of the abdomen of the wearer in the front-rear direction L, and the absorber 30 can be made to adhere to the body of the wearer in the front-rear direction L.

Further, in the waist elastic member 55, the contraction force of the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T may be maximized. In this way, in the region where the continuous elastic member 55C is disposed, the force of close contact with the wearer' S body side by contraction of the continuous elastic member 55C is strong, and therefore, the crotch region S3 side is less likely to be deviated. This makes it possible to firmly fix the leg elastic members 75 while suppressing the entire absorbent core 31 from being displaced toward the crotch region S3.

Further, the contraction force of the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T may be larger than the contraction force of the leg elastic member 75. Thereby, the leg elastic members 75 can be firmly fixed at the positions where the leg elastic members 75 overlap the continuous elastic members 55C in the thickness direction T. The crotch region can be reliably lifted up by the contraction force of the leg elastic members 75, and sagging of the crotch region S3 can be suppressed.

Further, the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T may overlap the low weight region LR in the thickness direction T. Since the low weight-per-area region LR has lower rigidity than the surroundings, the contractive force of the continuous elastic member 55C is less likely to be hindered by the rigidity of the absorber 30. By contraction of the continuous elastic member 55C, the portion of the absorber 30 in the low basis weight region LR can be brought closer to the wearer 'S body side, and the front waistline region S1 can be fitted to the wearer' S body. In particular, since the absorbent material in the low basis weight region LR has a lower basis weight than the surrounding area, even if the absorbent body 30 absorbs excrement, the portion of the absorbent body 30 in the low basis weight region LR is less likely to expand. Therefore, the contraction of the continuous elastic member 55C is not easily hindered even after the excretion, and the front waistline region S1 can be fitted to the body of the wearer even after the excretion. As a result, the front waist region S1 can be prevented from being displaced toward the crotch region S3, and the excrement can be prevented from leaking from the waist opening 17.

The discontinuous elastic member 55N may further include an outer discontinuous elastic member 55NB, and the outer discontinuous elastic member 55NB may be disposed at an outer side in the front-rear direction L than the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T. Accordingly, the front waist region S1 can be attached to the body side of the wearer without being tightened to the body side of the wearer at the center side in the width direction W of the front waist region S1 at the outer side in the front-back direction L than the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T, and the front waist region S1 can be attached along the body of the wearer by contraction of the outer discontinuous elastic member 55NB at the outer side of the wearer.

Next, the leg side gathers 80 will be described. The leg side gathers 80 are gathers that can stand up toward the skin surface side T1. Can be provided closer to the skin surface side T1 than the leg gathers 80. The leg side gathers 80 may have a fixing portion 81 and a standing portion 82. The fixing portion 81 fixes the leg side piece 47. Specifically, the fixing portion 81 fixes a portion of the leg side sheet 47 to which the leg side elastic member 85 is fixed to a member located closer to the non-skin surface side T2 than the portion of the leg side sheet 47. In an embodiment, the 3 rd portion 473 of the leg side panel 47 is secured to the 4 th portion 474 by the securing portion 81. The fixing portion 81 may be formed of an adhesive portion such as a Hot Melt Adhesive (HMA) or an ultrasonic sealing portion.

The fixing portion 81 includes a front-rear fixing portion 811 for fixing the leg-side sheet 47 on the outer side in the front-rear direction L than the rising portion 82, and a width fixing portion 812 for fixing the leg-side sheet 47 on the outer side in the width direction W than the rising portion 82. The front-rear fixing portion 811 may have a front fixing portion disposed in the front waistline region S1 and a rear fixing portion disposed in the rear waistline region S2.

In the embodiment, the front-rear fixing portion 811 has an inner end edge 811E located inward in the front-rear direction L. The continuous elastic member 55C is disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811. Specifically, the inner continuous elastic member 55CI is disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811. The overlapped continuous elastic members 55CO other than the inner continuous elastic members 55CI are disposed at positions outside the inner end edges 811E of the front-rear fixing portions 811 in the front-rear direction L. The front-rear fixing portion 811 has an inner edge 811S located inward in the width direction W. The inner edges 811S of the front and rear fixing portions 811 may be disposed in the low contraction region LER in which the discontinuous elastic member 55N does not extend continuously in the width direction W.

As shown in fig. 6, the absorbent core 31, the rising portion 82, and the inner continuous elastic member 55CI may overlap in the thickness direction T. In addition, in the case where the compressed portion is provided in the absorbent core 31, the compressed portion, the rising portion 82, and the inner continuous elastic member 55CI may overlap in the thickness direction T. As shown in fig. 7B, the rising portion 82 can be raised by contraction of the leg-side elastic member 85. The rising portion 82 can rise with the boundary between the rising portion 82 and the fixing portion 811 as a base point. Specifically, the rising portion 82 can rise in the width direction W with the inner end edge of the width fixing portion 812 in the width direction W as a base point, and can rise in the front-rear direction L with the inner end edge 811E of the front-rear fixing portion 811 in the front-rear direction L as a base point. However, as will be described later, when the continuous elastic member 55C (the inner continuous elastic member 55 CI) is disposed at a position on the inner side in the front-rear direction L than the inner end edge 811E in the front-rear direction L of the front-rear fixing portion 811, the constricted portion can be raised with the position SP overlapping the inner continuous elastic member 55CI in the thickness direction T as a base point.

The leg-side elastic members 85 are disposed on the leg-side panels 47 in a state of being elongated in the front-rear direction L. In the present embodiment, the leg-side elastic member 85 is sandwiched by the leg-side pieces 47. The leg-side elastic member 85 may be constituted by a single elastic member or a plurality of elastic members arranged at intervals in the width direction W. In the present embodiment, the leg-side elastic member 85 is constituted by two elastic members. The leg-side elastic member 85 may be formed of a linear or string-like elastic member extending in the front-rear direction L. The leg-side elastic members 85 are disposed on the leg-side panels 47 in a state of being elongated in the front-rear direction L. In the present embodiment, the leg-side elastic member 85 is sandwiched by the leg-side pieces 47. Specifically, the leg-side elastic member 85 is disposed between the 2 nd portion 472 and the 3 rd portion 473 of the leg-side sheet 47. The leg-side elastic member 85 can be fixed to at least one of the 2 nd portion 472 and the 3 rd portion 473 of the leg-side panel 47.

The contraction force of the inner continuous elastic member 55CI overlapping the leg-side elastic member 85 in the thickness direction T may be larger than the contraction force of the leg-side elastic member 85. Here, as shown in fig. 9A, in the conventional absorbent article, the continuous elastic member 55C is not disposed at a position on the inner side in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811. Therefore, as usual, the rising portion 82 rises with the inner end edge 811E of the front-rear fixing portion 811 as a base point. Therefore, the vicinity of the inner end edge 811E of the front-rear fixing portion 811 is easily separated from the body of the wearer, and a gap G is easily generated between the absorbent article and the body. There is thus a problem that: the excrement spread toward the waist region side on the absorber 30 spreads in the width direction W, so that side leakage is liable to occur.

As described above, in the embodiment, the continuous elastic member 55C has the inner continuous elastic member 55CI, and the inner continuous elastic member 55CI is disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811. As shown in fig. 9B, since the inner continuous elastic member 55CI is disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811, the rising portion 82 located further inward in the front-rear direction L than the front-rear fixing portion 811 and the inner continuous elastic member 55CI overlap in the thickness direction T. Therefore, the standing portion 82 can be closely attached to the body at the position where the standing portion 82 and the inner continuous elastic member 55CI overlap. This can prevent the excrement from reaching the outer side in the front-rear direction L of the rising portion 82, and can suppress the excrement from spreading in the width direction W from the outer side in the front-rear direction L of the rising portion 82. On the other hand, at a position on the inner side in the front-rear direction L than the position SP where the rising portion 82 and the inner continuous elastic member 55CI overlap, the rising portion 82 can rise up with the overlapping position SP as a base point by contraction of the leg-side elastic member 85, and therefore, excrement spreading in the width direction W on the absorber 30 can be blocked.

Further, by contraction of the continuous elastic member 55C, the region where the continuous elastic member 55C is arranged is brought into close contact with the body of the wearer. On the other hand, the discontinuous elastic member 55N does not extend continuously in the width direction W at a position on the inner side in the front-rear direction L than the inner continuous elastic member 55CI, and therefore there is a low shrinkage region LER in which the shrinkage force in the width direction W is low. Thus, the portion on the inner side in the front-rear direction L relative to the inner continuous elastic member 55CI is relatively easy to separate from the body side. According to the above, leakage of the excrement diffused in the absorber 30 toward the front waistline region S1 can be suppressed.

In addition, the inner continuous elastic member 55CI may be constituted by a plurality of elastic members adjacent in the front-rear direction L. This allows the rising portion 82 to be closely attached to the body in a planar shape, and the rising portion 82 can be firmly fixed at the position SP where the rising portion 82 and the inner continuous elastic member 55CI overlap. Therefore, the excrement can be prevented from reaching the outer side in the front-rear direction L of the rising portion 82. As a result, the excrement can be prevented from spreading in the width direction W from the position outside the rising portion 82 in the front-rear direction L.

In the waist elastic member 55, the contraction force of the inner continuous elastic member 55CI may be maximized. By increasing the contraction force of the inner continuous elastic member 55CI, the rising portion 82 can be made to closely adhere to the body. This can suppress the spread of excrement in the width direction W from the position outside the rising portion 82 in the front-rear direction L. Further, by closely fitting the rising portion 82 to the body, the portion on the inner side in the front-rear direction L than the overlapping position SP where the rising portion 82 and the inner continuous elastic member 55CI overlap is made to be more easily separated from the body side. This facilitates the rising portion 82 to rise up with the overlapping position SP as a base point, and can block the excrement spread in the width direction W on the absorber 30.

Further, the contraction force of the innermost continuous elastic member (1 st inner continuous elastic member 55 CIA) may be the largest among the waist elastic members 55. The innermost continuous elastic member can be reliably brought into close contact with the body, and excrement can be prevented from reaching a position outside the innermost continuous elastic member in the front-rear direction L. Further, since the rising portion 82 rises with the position SP at which the rising portion 82 and the innermost continuous elastic member overlap as a base point, the rising portion 82 is easily raised by maximizing the contraction force of the innermost continuous elastic member, and excrement spreading in the width direction on the absorbent body 30 can be blocked.

Further, the inner continuous elastic member 55CI may overlap the low basis weight region LR in the thickness direction. Thus, since the low basis weight region LR has lower rigidity than the surroundings, the contraction force of the inner continuous elastic member 55CI is less likely to be hindered by the rigidity of the absorber 30. In particular, since the absorbent material in the low basis weight region LR has a lower basis weight than the surrounding area, even if the absorbent body 30 absorbs excrement, the portion of the absorbent body 30 in the low basis weight region LR is less likely to expand. In particular, in the present embodiment, since the weight per unit area of the low weight per unit area region LR is 0, expansion of excrement can be suppressed. Therefore, shrinkage of the overlapped continuous elastic member 55CO after excretion is also less likely to be hindered. Therefore, by contraction of the inner continuous elastic member 55CI, the region overlapping the inner continuous elastic member 55CI in the thickness direction T can be further brought closer to the wearer's body side. Therefore, the excrement can be prevented from reaching the outer side in the front-rear direction L with respect to the inner continuous elastic member 55 CI. Further, the standing portion 82 is easily standing up, and excrement spread in the width direction W on the absorber 30 can be blocked.

In addition, the absorbent core 31, the rising portion 82, and the inner continuous elastic member 55CI may overlap in the thickness direction T. Accordingly, the rising portion 82 is brought into close contact with the body side by the contraction of the inner continuous elastic member 55CI, and therefore, the rising portion 82 rises in the front-rear direction L at a position SP on the inner continuous elastic member 55CI that overlaps the rising portion 82 in the thickness direction T. Since the part of the rising portion 82 that becomes the rising base point of the leg side gathers 80 is supported by the absorbent core 31 having high rigidity, the local position of the rising portion 82 can be stably fixed. Therefore, the portion of the rising portion 82 located inside the portion of the rising portion 82 in the front-rear direction L can be easily raised.

In addition, the compression portion, the rising portion, and the inner continuous elastic member 55CI may overlap in the thickness direction T. As a result, the part of the rising portion 82 that serves as the rising base point of the leg side gathers 80 is supported by the compressed portion that has high rigidity also in the absorbent core 31, and therefore the local position of the rising portion 82 can be stably fixed. Therefore, the portion of the rising portion 82 located inside the portion of the rising portion 82 in the front-rear direction can be more easily raised.

In addition, the inner edge 811S of the front-rear fixing portion 811 may be disposed in the low shrinkage region LER. Accordingly, since the contraction force of the low contraction region LER in the width direction W is low, the absorbent core 31 is less likely to contract in the width direction W, and the front-rear fixing portion 811 is less likely to move inward in the width direction W. This ensures a space for accommodating the excrement in the width direction W, and suppresses the excrement from spreading beyond the raised portion 82.

The inner continuous elastic member 55CI may be disposed in the front waistline region S1 at a position rearward of the front end edge 16F of the side joint 16 in the front waistline region S1 and at a distance from the front end edge 16F of 5% to 20% of the total length of the absorbent article 1 in the front-rear direction L. Thus, the inner continuous elastic member 55CI can be provided in a region where the depression of the lower abdomen end of the wearer is easily disposed. Since the depression of the lower end of the abdomen of the wearer easily generates a gap between the wearer and the front outer body 50A, the absorbent core 31 can be easily folded in the front-rear direction L along the depression of the lower end of the abdomen of the wearer. Accordingly, the region where the inner continuous elastic member 55CI is disposed is brought into close contact with the wearer's body (specifically, the depression of the lower end of the abdomen) by contraction of the inner continuous elastic member 55CI. This can prevent excrement from reaching the outer side of the rising portion 82 in the front-rear direction L. On the other hand, at the inner side in the front-rear direction L than the inner continuous elastic member 55CI, the absorbent core 31 is relatively easily separated from the body side due to the bending in the front-rear direction. Thus, the standing portion 82 can stand up from the vicinity of the depression in the lower end of the abdomen, and thus excrement that spreads in the width direction W on the absorber 30 can be blocked.

The contraction force of the inner continuous elastic member 55CI overlapping the leg-side elastic member 85 in the thickness direction T may be larger than the contraction force of the leg-side elastic member 85. Thereby, the leg-side elastic member 85 can be firmly fixed at a position where the leg-side elastic member 85 and the inner continuous elastic member 55CI overlap in the thickness direction T. The rising portion 82 can be reliably raised by the contraction force of the leg-side elastic member 85.

Further, since the expansion and contraction piece 55CS, which is the continuous elastic member 55C, may be disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811, the inner end edge of the expansion and contraction piece 55CS in the front-rear direction L may be positioned further inward than the inner end edge 811E of the front-rear fixing portion 811. Thus, the rising portion 82 can rise with the inner edge of the stretchable sheet 55CS in the front-rear direction L as a base point, and therefore can block the excrement that spreads in the width direction W on the absorber 30. In the region where the stretchable sheet 55CS and the linear or string-like overlapped continuous elastic member 55CO overlap in the thickness direction T, the standing portion 82 can be brought into close contact with the body, and therefore, excrement can be prevented from reaching a position outside the standing portion 82 in the front-rear direction L.

(3) Modification example

Next, each modification will be described.

In the absorbent article 1 of modification 1, the leg elastic members 75 may be disposed not only in the front waistline region S1 at positions overlapping the continuous elastic members 55C in the thickness direction T, but also in the rear waistline region S2 at positions overlapping the continuous elastic members 55C in the thickness direction T. Thus, the leg elastic members 75 are easily fixed to both the front waistline region S1 and the rear waistline region S2. Therefore, the crotch region S3 can be lifted up toward both the front waistline region S1 and the rear waistline region S2 by contraction of the leg elastic members 75, and side leakage of excrement due to sagging of the crotch region S3 can be easily suppressed particularly in a standing posture.

In the absorbent article 1 of modification 2, the inner continuous elastic member 55CI may be constituted by all continuous elastic members 55C overlapping the absorbent core 31 in the thickness direction T. That is, all of the overlapped continuous elastic members 55CO may be disposed at positions inward in the front-rear direction L than the inner end edges 811E of the front-rear fixing portion 811 in the front-rear direction L. As a result, the contraction of the inner continuous elastic member 55CI can bring the absorbent core 31 into close contact with the body of the wearer, and the excrement can be prevented from reaching the outer side in the front-rear direction L of the absorbent core 31. Further, since the inner continuous elastic member 55CI is disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811, the excrement can be further prevented from reaching a position further outward in the front-rear direction L than the standing portion 82. As a result, the excrement can be prevented from spreading in the width direction W from the position outside the rising portion 82 in the front-rear direction L.

(4) Other embodiments

The present invention has been described in detail using the embodiments described above, but it is obvious 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 variations without departing from the spirit and scope of the present invention as defined by the description of the claims. Accordingly, the description of the present invention is intended to be illustrative, and not limiting.

In the above description, the case where the front waistline region S1 is the 1 st waistline region and the rear waistline region S2 is the 2 nd waistline region has been exemplified, but the present invention is not limited thereto. The rear waistline region S2 may be a 1 st waistline region, and the front waistline region S1 may be a 2 nd waistline region. In this case, in the prone position, when the wearer lifts his or her legs, the leg elastic members 75 disposed in the crotch region S3 are lifted up toward the rear waistline region S2. The crotch region S3 is lifted up toward the rear waistline region S2 side by lifting up of the leg elastic members 75. As a result, sagging of the crotch region S3 can be suppressed, and the absorbent core 31 can be brought closer to the wearer' S body.

In the above, as an example of the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T, the overlapping continuous elastic member 55CO is exemplified, but not limited thereto. For example, the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T may be a continuous elastic member 55C not overlapping the absorbent core 31 in the thickness direction T. The continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T may overlap the absorbent main body 20 (e.g., the front sheet 41 and the back sheet 42) without overlapping the absorbent core 31 in the thickness direction T. Alternatively, the continuous elastic member 55C overlapping the leg elastic member 75 in the thickness direction T may not overlap the absorbent main body 20.

In the above, the case where the leg side pieces 47 are constituted by one sheet member has been described, but this is not a limitation. For example, the leg side pieces 47 may be constituted by a plurality of sheet members. For example, the leg-side sheet 47 on one side in the width direction W and the leg-side sheet 47 on the other side in the width direction W may be constituted by different sheet members. In addition, for example, the 2 nd portion 472 and the 3 rd portion 473 of the leg side sheet 47 may also be constituted of different sheet members. Accordingly, the leg side pieces 47 may be constituted by a plurality of laminated sheet members.

In the above, the film may be disposed outside the absorber 30 in the width direction W. For example, a film extending in the width direction W may be disposed between the leg elastic member 75 and the 4 th portion 474 in the thickness direction T. Alternatively, a film may be provided instead of the 4 th portion 474. This can suppress leakage of excrement from leaking out to the non-skin surface side T2 of the film.

In the above, the case where the low weight-per-unit-area region LR is 0 was described, but the present invention is not limited thereto. The absorbent material of the low basis weight region LR may also have a basis weight greater than 0. For example, the weight per unit area of the absorbent material in the low weight per unit area region LR may be lower than the weight per unit area of the absorbent material in the portion of the absorbent core 31 disposed in the crotch region S3.

Such a situation is described in the above: the continuous elastic member 55C has an inner continuous elastic member 55CI, and the inner continuous elastic member 55CI is disposed at a position further inward in the front-rear direction L than the inner end edge 811E of the front-rear fixing portion 811, but is not limited thereto. All of the continuous elastic members 55C may be disposed at positions outside the inner end edges 811E of the front-rear fixing portions 811 in the front-rear direction L. The absorbent article 1 may not have the leg side gathers 80. The structures of the absorbent article 1 of the above-described embodiment, each modification, and other embodiments can be appropriately combined.

The entire contents of japanese patent application nos. 2019-204315, filed 11/2019, are incorporated into the present specification by reference.

Industrial applicability

According to the present aspect, an absorbent article having a continuous elastic member and a discontinuous elastic member in the waistline region can be provided in which leakage of excrement due to sagging of the crotch region can be suppressed.

Description of the reference numerals

1. An absorbent article; 16. a side joint; 17. a waist opening; 18. leg-surrounding opening portions; 20. an absorbent body; 30. an absorber; 31. an absorbent core; 32. a core cladding; 41. a surface sheet; 42. a back sheet; 47. leg side panels; 50. an outer body; 50A, front outer package; 50B, a rear outer body; 55. a waist elastic member; 55C, a continuous elastic member; 55CI, inner continuous elastic member; 55CIA, 1 st inner continuous elastic member (innermost continuous elastic member); 55CIB, 2 nd inner continuous elastic member; 55CN, non-overlapping continuous elastic members; 55CO, overlapping the continuous elastic member; 55CS, expansion sheet; 55N, discontinuous elastic member; 55NA, inner discontinuous elastic member; 55NB, outer discontinuous elastic member; 70. leg gathers; 75. leg elastic members; 80. leg side gathers; 81. a fixing part; 82. a rising part; 85. leg side elastic members.

Claims

1. An absorbent article, the absorbent article comprising:

a front-rear direction, a thickness direction, and a width direction orthogonal to the front-rear direction;

a waistline region consisting of a 1 st waistline region and a 2 nd waistline region; and a crotch region sandwiched by the 1 st waist region and the 2 nd waist region in the front-rear direction;

an absorbent core comprising an absorbent material and disposed in the crotch region and at least the 1 st waist region;

a waist elastic member disposed in the waist region in a state of being elongated in the width direction; and

leg elastic members disposed in the crotch region at positions outside the absorbent core in the width direction and extending in the front-rear direction,

the waist elastic member has: a continuous elastic member continuously extending from one outer side portion of the 1 st waist region to the other outer side portion in the width direction; and a discontinuous elastic member that does not extend continuously in the width direction at least in the center in the width direction of the 1 st waist region, wherein,

the portion of the leg elastic member exhibiting an effective length of stretchability overlaps the continuous elastic member in the thickness direction at a position outside of at least any one of the discontinuous elastic members in the front-rear direction in the 1 st waist region.

2. The absorbent article of claim 1, wherein,

the waist elastic member has a 2 nd continuous elastic member continuously extending from one outer side portion to the other outer side portion of the 2 nd waist region in the width direction,

the leg elastic member is disposed in the 2 nd waist region at a position that does not overlap with the 2 nd continuous elastic member in the thickness direction.

3. The absorbent article of claim 2, wherein,

the 1 st waistline region is a front waistline region disposed on the abdomen side of the wearer.

4. The absorbent article of claim 1, wherein,

the leg elastic member is disposed in the 2 nd waist region at a position overlapping the 2 nd continuous elastic member in the thickness direction.

5. The absorbent article according to any one of claims 1 to 4, wherein,

the continuous elastic member has an overlapping continuous elastic member overlapping the absorbent core in the thickness direction,

the leg elastic member overlaps the overlapping continuous elastic member in the thickness direction.

6. The absorbent article according to any one of claims 1 to 4, wherein,

the continuous elastic member overlapping the leg elastic member in the thickness direction is constituted by a plurality of elastic members arranged at intervals in the front-rear direction,

the leg elastic member overlaps two or more elastic members of the plurality of elastic members in the thickness direction.

7. The absorbent article according to any one of claims 1 to 4, wherein,

the 1 st waistline region is a front waistline region disposed on the abdomen side of the wearer, the 2 nd waistline region is a rear waistline region disposed on the back side of the wearer,

the absorbent article has:

a front outer body disposed in the front waistline region;

a rear outer body disposed in the rear waistline region; and

a side joint portion joining an outer side portion of the front outer body in the width direction and an outer side portion of the rear outer body in the width direction,

in the front waistline region, the continuous elastic member overlapping the leg elastic members in the thickness direction is disposed at a position rearward of a front end edge of the side joint in the front waistline region and at a distance from the front end edge of 5% to 20% of the total length of the absorbent article in the front-rear direction.

8. The absorbent article according to any one of claims 1 to 4, wherein,

the length of the leg elastic member in the front-rear direction of a portion overlapping the 1 st waist region in the thickness direction is longer than the length of the leg elastic member in the front-rear direction of a portion overlapping the 2 nd waist region in the thickness direction.

9. The absorbent article according to any one of claims 1 to 4, wherein,

in the waist elastic member, a contraction force of the continuous elastic member overlapped with the leg elastic member in the thickness direction is maximized.

10. The absorbent article according to any one of claims 1 to 4, wherein,

the contraction force of the continuous elastic member overlapping the leg elastic member in the thickness direction is larger than the contraction force of the leg elastic member.

11. The absorbent article according to any one of claims 1 to 4, wherein,

the absorbent article has an absorbent body comprising the absorbent core,

the absorber has a low basis weight region where the weight per unit area of the absorbent material is lower than the surrounding,

the continuous elastic member overlapping the leg elastic member in the thickness direction overlaps the low basis weight region in the thickness direction.

12. The absorbent article according to any one of claims 1 to 4, wherein,

the discontinuous elastic member further includes an outer discontinuous elastic member disposed at a position outside the continuous elastic member overlapping the leg elastic member in the thickness direction in the front-rear direction.