JP6776470B1 - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article capable of expanding a storage space of a leak-proof gather while ensuring a height of a wall portion of the leak-proof gather.
An absorbent article has an absorbent core (30) and a width proximal edge (64) that serves as an upright fulcrum of the contraction on the lateral side of the contraction (63). It is equipped with an orthostatic leak-proof gather (60). Before use, the absorbent articles extend along the front-rear direction, and the skin surfaces of the absorbent articles are placed on the skin side of each other from the article folds (FL1) arranged in pairs with the center in the width direction of the absorbent articles in between. Folded to face each other. The width base edge is arranged outside the width direction of the outer edge of the absorption core, at least in the anterior girth region and the rear girth region. The article crease overlaps the absorption core at least in the anterior girth and rear girth areas.
[Selection diagram] Fig. 6

Description

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

Conventionally, as an absorbent article that absorbs excrement such as urine and feces of the wearer, an absorbent article having a leak-proof gather that stands on the wearer side has been disclosed. The leak-proof gathers include a contraction portion on which a leak-proof elastic member is arranged and standing on the wearer side, a width base edge edge located on the side in the width direction from the contraction portion and serving as a standing fulcrum of the contraction portion. Have at least. Since the contraction portion stands up from the width base end edge, a wall portion that stands up on the wearer side is provided on the outer side of the absorbent article, and lateral leakage of excrement is suppressed. The width proximal edge of the leak-proof gather of Patent Document 1 is arranged so as to overlap the absorption core. Therefore, the wall portion due to the leakage-proof gathers easily stands up from the absorption core on the absorption core.

Japanese Unexamined Patent Publication No. 2013-31490

In such an absorbent article, it is required to suppress lateral leakage during use. The leak-proof gathers of Patent Document 1 stand on the absorption core. Therefore, when highly fluid excrement such as loose stool is discharged and diffuses to the vicinity of the outer edge of the absorption core, the excrement may reach the wall portion and lateral leakage may occur. In addition, in order to prevent excrement from reaching the wall, the width proximal edge of the leak-proof gather is arranged outside the outer edge of the absorption core in the width direction to widen the accommodation space of the leak-proof gather. be able to. However, when the width base edge of the leak-proof gather is placed outside the outer edge of the absorption core in the width direction, the width base edge is the rigidity of the absorption core as compared with the form in which the absorption core and the width base edge overlap. Since it is not supported by the width base end edge, it may be difficult to secure the height of the wall portion of the leak-proof gather. Therefore, excrement may exceed the wall portion and lateral leakage may occur.

Therefore, the present invention has been made to solve the above-mentioned problems, and provides an absorbent article capable of expanding the accommodation space of the leak-proof gather while ensuring the height of the wall portion of the leak-proof gather. The purpose is.

The absorbent article according to one embodiment includes a front waist circumference area, a rear waist circumference area, an inseam area located between the front waist circumference area and the rear waist circumference area, and a front-rear direction from the front waist circumference area to the rear waist circumference area. And the absorption core extending in the width direction orthogonal to the anteroposterior direction, straddling the inseam region, and extending to at least one of the front waist circumference region and the rear waist circumference region, and the contraction on the side of the contraction portion in the width direction. It is provided with an orthostatic leak-proof gather having a width base edge that serves as an orthostatic fulcrum of the portion. Before use, the absorbent article extends along the anteroposterior direction and is arranged in pairs with the center of the absorbent article in the width direction as a base point on the skin surface side of the absorbent article. It is folded so that they face each other. The width base end edge is arranged outside the width direction of the outer edge of the absorption core, at least in the front girth region and the rear girth region. The article crease overlaps the absorption core at least in the front girth region and the rear girth region.

FIG. 1 is a plan view of the absorbent article according to the embodiment as viewed from the skin surface side. FIG. 2 is a plan view showing a state in which the absorbent article shown in FIG. 1 is folded with the article fold as a base point. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. FIG. 4 is a cross-sectional view taken along the line BB shown in FIG. FIG. 5 is a cross-sectional view taken along the line CC shown in FIG. FIG. 6 is a cross-sectional view based on FIG. 4, and schematically shows a state in which the absorbent article is unfolded with respect to the crease of the article.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.
The absorbent article according to one embodiment includes a front waist circumference area, a rear waist circumference area, an inseam area located between the front waist circumference area and the rear waist circumference area, and a front-rear direction from the front waist circumference area to the rear waist circumference area. And the absorption core extending in the width direction orthogonal to the front-rear direction, straddling the inseam area, and extending to at least one of the front waist area and the rear waist area, and the contraction on the side of the contraction portion in the width direction. It is provided with an orthostatic leak-proof gather having a width proximal edge serving as an orthostatic fulcrum of the portion. Before use, the absorbent article extends along the anteroposterior direction and is arranged in pairs with the center of the absorbent article in the width direction as a base point on the skin surface side of the absorbent article. It is folded so that they face each other. The width base end edge is arranged outside the width direction of the outer edge of the absorption core, at least in the front waist circumference area and the rear waist circumference region. The article crease overlaps the absorption core at least in the front girth region and the rear girth region. At least in the anterior girth region and the rear girth region, the width base end edge is arranged outside the outer edge of the absorption core in the width direction, and the leakage-proof gathers are arranged outside the outer edge of the absorption core in the width direction. A wall can be formed. Even if highly fluid excrement such as loose stool is discharged and diffuses to the vicinity of the outer edge of the absorption core, the width proximal edge of the leak-proof gather suppresses diffusion and leakage can be suppressed. Further, the crease overlaps the absorption core at least in the front waist circumference area and the rear waist circumference region. Therefore, the outer portion of the absorption core is deformed so as to stand up toward the wearer due to the folding habit. When the outer portion of the absorption core rises, the width base end edge located outside the absorption core in the width direction also rises toward the wearer. Therefore, the width base end edge, which is the rising base point of the wall portion, rises toward the wearer side, so that the height of the wall portion can be formed high and lateral leakage can be suppressed.

According to a preferred embodiment, the leakage-proof gather is formed on the front base end edge serving as an upright fulcrum of the contraction portion on the front side of the contraction portion and on the rear side of the contraction portion. It has a trailing base edge that serves as an upright fulcrum. At least one of the anterior proximal edge and the posterior proximal edge is located in a region overlapping the absorption core. According to this aspect, since at least one of the front base end edge and the rear base end edge overlaps with the absorption core, the standing fulcrum of the contracted portion is supported by the rigidity of the absorption core, and the standing property of the wall portion can be easily maintained. In addition, the anterior-posterior end of the absorbent core can be pulled up by leak-proof gathers to achieve a bowl shape with the anterior-posterior end of the absorbent article raised toward the wearer in a cross section along the anterior-posterior direction. It is possible to suppress leakage in the front-rear direction.

According to a preferred embodiment, the side elastic member is located outside the width direction of the outer edge of the absorption core and expands and contracts in the front-rear direction. The side elastic member has an inner elastic member located inside the width direction with respect to the width base end edge. According to this aspect, the area between the outer edge of the absorption core and the width base edge can be pulled up toward the wearer by the inner elastic member. By improving the adhesion on the side of the absorption core and raising the width base end edge, the width base end edge, which is the rising base point of the wall portion, can also be raised, and the wall portion of the leak-proof gather can be made higher.

According to a preferred embodiment, the inner elastic member is located outside the width direction of the center of the outer edge of the absorption core and the width base end edge in the width direction. According to this aspect, the region outside the width direction from the center of the outer edge of the absorption core and the width proximal edge in the width direction is the width of the outer edge of the absorption core and the width proximal edge. Compared to the area inside the center of the direction, it is less affected by the rigidity of the absorption core, and it is difficult to maintain the intended shape. A region relatively distant from the absorbent core can be pulled up by the inner elastic member, and the absorbent article can be placed along the wearer's body, and lateral leakage can be suppressed.

According to a preferred embodiment, the side elastic member is located outside the width direction of the outer edge of the absorption core and expands and contracts in the front-rear direction. The side elastic member has an outer elastic member located outside the width direction with respect to the width base end edge. According to this aspect, the region outside the width direction from the width base end edge can be pulled up toward the wearer by the outer elastic member. By pulling up the region inside the width direction from the width base edge, the wall portion that stands up from the width base edge tends to fall inward in the width direction without falling outward in the width direction. A wall may be provided to cover the side of the wearer's crotch.

According to a preferred embodiment, at least in the rear waist circumference region, a flap portion extending outward in the width direction from the absorption core and having a fastening member joined to the front waist circumference region is provided. The trailing edge of the contracted portion is located posterior to the front edge of the flap portion. The mounting assistant pulls the fastening member and the flap portion in the width direction at the time of mounting. At this time, since the rear end edge of the contracted portion is located on the rear side of the front end edge of the flap portion, the rear end edge of the contracted portion is also pulled outward in the width direction by pulling the flap portion in the width direction. Therefore, the uprightness of the contracted portion can be ensured, and the height of the wall portion of the leak-proof gather can be secured.

According to a preferred embodiment, the width stretchable member is located on at least one of the front side of the absorption core and the rear side of the absorption core and expands and contracts in the width direction. According to this aspect, the region outside the absorption core in the front-rear direction can be brought into close contact with the body by the width elastic member. Therefore, in the cross section along the width direction, not only the side portion of the absorbent article is raised to the wearer side by the leak-proof gather, but also the cross section along the front-rear direction is absorbed by the width elastic member. It is possible to realize a bowl shape in which the end portion of the sex article in the front-rear direction is raised toward the wearer. Not only lateral leakage but also leakage in the front-rear direction can be suppressed.

According to a preferred embodiment, the leak-proof gather has an inner leak-proof elastic member located inside the width proximal edge in the stretched state of the absorbent article. According to this aspect, the article crease overlaps the leak-proof gather between the width base edge and the inner leak-proof elastic member. The article crease overlaps the leak-proof gathers between the width base edge and the inner leak-proof elastic member. The contraction force of the inner leak-proof elastic member is transmitted to the absorption core via the width proximal edge. Creases are arranged on the width base edge and the inner leak-proof elastic member, and the contraction force of the inner leak-proof elastic member can be divided by the crease. It is possible to suppress the contraction force of the inner leak-proof elastic member from being transmitted to the absorption core. It is possible to suppress the contraction of the absorption core due to the contraction of the leakage-proof gather, and it is possible to secure the area where the absorption core hits the body. Absorption capacity can be secured and leakage can be suppressed.

According to a preferred embodiment, the leakage-proof gather is formed on the front base end edge serving as an upright fulcrum of the contraction portion on the front side of the contraction portion and on the rear side of the contraction portion. It has a trailing base edge that serves as an upright fulcrum. At least one of the anterior proximal edge and the posterior proximal edge is provided in a region that does not overlap the absorption core. According to this aspect, since at least one of the anterior proximal edge and the posterior proximal edge does not overlap the absorbing core, the contractile force of the leak-proof gather is applied to the absorbing core via the anterior proximal edge and the posterior proximal edge. It does not propagate directly, and the absorption core does not easily shrink due to the shrinkage of the leak-proof gathers. It is possible to suppress the contraction of the absorption core due to the contraction of the leakage-proof gather, and it is possible to secure the area where the absorption core hits the body. Absorption capacity can be secured and leakage can be suppressed.

According to a preferred embodiment, the non-skin surface of the leak-proof gather is in contact with the non-skin surface of the leak-proof gather in at least a part of the laminated region where the leak-proof gather and the absorption core overlap. There is a non-joined region that is not joined. According to this aspect, since the non-junction region is provided in the laminated region, the contraction force of the leakage-proof gather is suppressed from propagating to the absorption core, and the absorption core contracts due to the contraction of the leakage-proof gather. Can be suppressed.

According to a preferred embodiment, the contracted portion is an inner contracted portion located inside the width proximal edge in the stretched state of the absorbent article and the width direction of the width proximal edge. It has an outer contraction portion located on the outside of the. The inner contraction portion constitutes a so-called inward tilting gather, and the outer contraction portion constitutes a so-called outward tilting gather. Both gathers allow for a wider surface to contact the body. Further, it has an inner contraction portion and an outer contraction portion, and the contraction portions extend on both sides in the width direction, and each contraction portion follows the body, so that the length of one contraction portion in the width direction is long. It is easier to maintain the uprightness of the wall compared to.

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

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

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

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

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

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

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

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

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

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

The absorbent article has a leak-proof gather 60. The leak-proof gather 60 is configured to stand upright on the skin surface side T1 of the wearer. The leakage-proof gather 60 includes a contraction portion 63 that contracts due to the contraction of the leakage-proof elastic member 69, a width proximal edge 64 that serves as an upright fulcrum of the contraction portion 63 on the side of the contraction portion 63 in the width direction W, and a contraction portion. It has a front proximal edge 65 which is an upright fulcrum of the contracted portion 63 on the front side of 63, and a rear proximal edge 66 which is an upright fulcrum of the contracted portion 63 on the posterior side of the contracted portion 63. .. The front edge of the contracted portion 63 coincides with the front proximal edge 65, and the trailing edge of the contracted portion 63 coincides with the posterior proximal edge 66. The contracted portion 63 is a region that can stand up toward the skin surface side T1, and is a concept that includes not only a region in which the leak-proof elastic member 69 is arranged but also a region in which the leak-proof elastic member 69 is not arranged.

The leak-proof gather 60 of the present embodiment has an inner leak-proof gather 601 and an outer leak-proof gather 602. The inner leak-proof gathers 601 are so-called inward-falling gathers, and form a storage space that opens toward the inside in the width direction W. The inner leakage-proof gathers 601 include an inner contraction portion 631 as a contraction portion 63, an inner width base end edge 641 as a width base end edge 64, an inner front base end edge 651 as a front base end edge 65, and a rear base. It has an inner posterior base edge 661 as an edge 66. The outer leakage-proof gathers 602 are so-called outward-falling gathers, and form a storage space that opens toward the outside in the width direction W. The outer leakage-proof gathers 602 include an outer contraction portion 632 as a contraction portion 63, an outer width proximal edge 642 as a width proximal edge 64, an outer anterior proximal edge 652 as a front proximal edge 65, and a posterior base. It has an outer posterior base edge 662 as an edge 66. In the following description of the leak-proof gather, unless otherwise specified, the positional relationship of the absorbent article 1 in the extended state is used.

The leak-proof gather 60 is composed of at least a leak-proof sheet 68 and a leak-proof elastic member 69. The leak-proof elastic member 69 is arranged in a state of extending in the front-rear direction L, and expands and contracts in the front-rear direction L. The leak-proof sheet 68 is joined with a leak-proof elastic member 69, and is configured so that at least a part thereof can stand up against a sheet located on the non-skin surface side of the leak-proof sheet. The inner leak-proof gather 601 has an inner leak-proof elastic member 691 as a leak-proof elastic member 69. The inner leak-proof elastic member 691 is provided on the inner side of the inner contraction portion 631, and is located inside the inner width proximal edge 641 in the width direction W in the extended state of the absorbent article. The apex of the inner contraction portion 631 is provided on the inner edge of the inner contraction portion 631. The inner leak-proof sheet 681 of the inner leak-proof gather 601 is composed of a surface sheet 11. In the modified example, the inner leakage-proof sheet 681 may be composed of a side sheet, or may be composed of a sheet other than the surface sheet and the side sheet. The inner leakage-proof sheet 681 of the present embodiment is formed by folding back the surface sheet 11. More specifically, the surface sheet 11 is folded in the outer portion in the width direction W from the first surface crease FL11 as a base point on the skin surface side T1 and inward in the width direction W, and is folded in the width direction W of the folded portion. In the inner portion, the second surface crease FL12 is used as a base point, and the fold is folded outward on the non-skin surface side T2 and in the width direction W. The region between the first surface crease FL11 and the second surface crease FL12 constitutes the inner skin contact portion located closest to the skin surface side in the inner leakproof gather 601. The portion folded with the second surface crease FL12 as the base point constitutes the inner tip portion. The portion that is not folded with respect to the first surface crease FL11 (the portion extending inward in the width direction W from the first surface crease FL11) constitutes an inner facing portion arranged to face the inner skin contact portion. The inner tip covers the inner facing portion. The inner leak-proof elastic member 691 is arranged between the inner skin contact portion and the tip portion. The inner facing portion of the present embodiment is joined to a sheet (skin side core wrap 13 and non-skin surface sheet 20) located on the non-skin surface side of the surface sheet via an adhesive HM. The inner width base end edge 641 is a first surface crease FL11. The inner front base end edge 651 is the rear end edge (the end edge on the innermost contraction portion side) of the region where the inner skin contact portion and the tip portion are fixed to the inner facing portion on the front side of the inner contraction portion 631. The inner rear base end edge 661 is the front end edge (the end edge on the innermost contraction portion side) of the region where the inner skin contact portion and the tip portion are fixed to the inner facing portion on the rear side of the inner contraction portion 631.

The outer leak-proof gather 602 has an outer leak-proof elastic member 692 as a leak-proof elastic member 69. The outer leakage-proof elastic member 692 is provided on the outer side of the outer contraction portion 632, and is located outside the outer width proximal edge 642 in the width direction W in the extended state of the absorbent article. The apex of the outer contraction portion 632 is provided on the outer edge of the outer contraction portion 632. The outer leak-proof sheet 682 of the outer leak-proof gather 602 is composed of a side sheet 12. In the modified example, the outer leakage-proof sheet 682 may be composed of a surface sheet, or may be composed of a sheet other than the surface sheet and the side sheet. The outer leakage-proof sheet 682 of the present embodiment is formed by folding back the side sheet 12. More specifically, the side sheet 12 is folded to the outside of the skin surface side T1 and the width direction W with the first side crease FL21 as the base point in the inner portion in the width direction W, and the folded portion is folded in the width direction W. The outer portion is folded inside the non-skin surface side T2 and the width direction W with the second side crease FL22 as a base point. The region between the first side crease FL21 and the second side crease FL22 constitutes the outer skin contact portion located on the skin surface side T1 of the outer leakage-proof gather 602. The portion folded with the second side fold FL22 as the base point constitutes the outer tip portion. The portion that is not folded with the second side fold FL22 as the base point (the portion that extends outward from the second side fold in the width direction W and overlaps) constitutes an outer facing portion that is arranged to face the outer skin contact portion. The outer tip covers the outer facing portion. The outer leak-proof elastic member 692 is arranged between the outer skin contact portion and the tip portion. The outer width base end edge 642 of the present embodiment is a second side crease FL22. The outer anterior proximal edge 652 is the posterior edge (the edge on the outermost contraction side) of the region where the outer skin contact portion and the tip portion are fixed to the outer facing portion on the front side of the outer contraction portion. The outer posterior proximal edge 662 is the anterior edge (the edge on the outermost contraction side) of the region in which the outer skin contact portion and the tip portion are fixed to the outer facing portion on the rear side of the outer contraction portion 632.

It is configured so that the accommodation space of the leak-proof gather 60 can be expanded while ensuring the height of the wall portion of the absorbent article 1 and the leak-proof gather 60 of the present embodiment. Next, a configuration for expanding the accommodation space of the leak-proof gather 60 while ensuring the height of the wall portion of the leak-proof gather will be described in detail. FIG. 6 is a cross-sectional view with reference to FIG. 4, and schematically shows a state in which the absorbent article is unfolded with the article fold FL1 as a base point. The leak-proof gather is a portion that stands up on the skin surface side due to the contraction of the contracted portion.

The width base end edge 64 is arranged outside the outer edge 30E of the absorption core 30 in the width direction W at least in the front waist circumference region S1 and the rear waist circumference region S2. At least a part of the width proximal edges 64 of the plurality of width proximal edges 64 may be arranged outside the outer edge 30E of the absorption core 30 in the width direction W. As shown in FIGS. 4 and 5, the inner width base end edge 641 of the present embodiment is arranged outside the outer edge 30E of the absorption core 30 in the width direction W. In the modified example, both the inner width base end edge 641 and the outer width base end edge 642 may be arranged outside the outer edge 30E of the absorption core 30 in the width direction W in the front waist circumference region S1 and the rear waist circumference region S2. .. At least in the front waist circumference region S1 and the rear waist circumference region S2, the width base end edge 64 is arranged outside the width direction W from the outer edge 30E of the absorption core 30, and the width direction W is located outside the outer edge 30E of the absorption core 30. A wall portion of the leak-proof gather 60 can be formed on the outside of the. Even if highly fluid excrement such as loose stool is discharged and diffuses to the vicinity of the outer edge 30E of the absorption core 30, the leakage-proof gather 60 can suppress the diffusion to the outside and suppress lateral leakage. In addition, in the form in which the inner width base end edge 641 is arranged outside the outer edge 30E of the absorption core 30 in the width direction W, excretion having high fluidity up to the vicinity of the outer edge 30E of the absorption core 30. Even if an object is diffused, excrement can be retained in the accommodation space of the inner leakage-proof gather 601 and lateral leakage can be suppressed. Preferably, the entire area of the inner width base end edge 641 in the front-rear direction L may be arranged outside the outer edge 30E of the absorption core 30 in the width direction W. Similarly, the entire area of the outer width base end edge 642 in the front-rear direction L may be arranged outside the outer edge 30E of the absorption core 30 in the width direction W.

In the present embodiment, as shown in FIGS. 3 to 5, the entire area of the inner width base end edge 641 in the front-rear direction L is arranged outside the outer edge 30E of the absorption core 30 in the width direction W. There is. As shown in FIG. 3, the outer width base end edge 642 is arranged outside the outer edge 30E of the absorption core 30 in the width direction W in the inseam region S3. As shown in FIGS. 4 and 5, the outer width base end edge 642 is located inside the outer edge 30E of the absorption core 30 in the width direction W in the front waist circumference region S1 and the rear waist circumference region S2, and is located inside the absorption core. It overlaps with 30. In at least a part of the laminated region where the leak-proof gather 60 and the absorption core 30 overlap, the non-skin surface of the leak-proof gather is not joined to the member in contact with the non-skin surface of the leak-proof gather. Is provided. The non-bonded region NR is a region in which the non-skin surface of the inner leak-proof sheet 681 constituting the inner leak-proof gather 601 is not joined to the member (back film 21) that abuts on the non-skin surface of the inner leak-proof sheet 681. The non-skin surface of the outer leak-proof sheet 682 constituting the outer leak-proof gather 602 is a region not joined to the member (back film 21) that abuts on the non-skin surface of the outer leak-proof sheet 682. No adhesive HM is arranged in the non-bonding region NR on the non-skin surface of the leak-proof gather. Further, on the non-skin surface of the leak-proof gather, the adhesive HM is arranged outside the non-bonding region NR in the width direction, and is bonded to the member in contact with the non-skin surface of the leak-proof gather. .. In the present embodiment, the non-junction region NR is provided in a part of the laminated region where the inner leak-proof gather 601 and the absorption core 30 overlap and a part of the laminated region where the outer leak-proof gather 602 and the absorption core 30 overlap. Has been done. Since the non-junction region NR is provided in the laminated region, the contraction force of the leakage-proof gather 60 is suppressed from propagating to the absorption core 30, and the absorption core 30 contracts due to the contraction of the leakage-proof gather 60. Can be suppressed.

As shown in FIGS. 4 and 5, the article fold FL1 overlaps the absorption core 30 at least in the front waist circumference region S1 and the rear waist circumference region S2. Therefore, as shown in FIG. 6, the outer portion of the absorption core 30 is deformed so as to stand up toward the wearer due to the bending habit. When the outer portion of the absorption core 30 rises, the width base end edge 64 located outside the absorption core 30 in the width direction W also rises toward the wearer. Therefore, the width base end edge 64, which is the rising base point of the wall portion, rises toward the wearer side, so that the height of the wall portion can be formed high and lateral leakage can be suppressed. In the present embodiment, both the inner width base end edge 641 and the outer width base end edge 642 are located outside the article fold FL1 in the width direction W, and the inner width base end edge 641 and the outer width base end edge 642 Both stand up to the wearer side due to folding habits.

At least one of the anterior proximal edge 65 and the posterior proximal edge 66 may be located in a region overlapping the absorption core 30. In the present embodiment, the inner anterior edge 651 is arranged in a region overlapping the absorption core 30, and the inner posterior edge 661, the outer anterior edge 652 and the outer posterior edge 662 are the absorption cores. It is arranged in an area that does not overlap with 30. Since at least one of the front base end edge 65 and the rear base end edge 66 overlaps with the absorption core 30, the standing fulcrum of the contracted portion 63 is supported by the rigidity of the absorption core 30, and the standing property of the wall portion can be easily maintained. In addition, the end portion of the absorption core 30 in the front-rear direction L can be pulled up by the leak-proof gather 60, and the end portion of the absorbent article 1 in the front-rear direction L is raised toward the wearer in a cross section along the front-rear direction L. A bowl shape can be realized, and leakage in the front-rear direction L can be suppressed.

As shown in FIG. 3, the side elastic member 80 may have an inner elastic member 81 located inside the width direction W with respect to the width base end edge 64. The inner elastic member 81 may be located inside at least one of the inner width base end edge 641 and the outer width base end edge 642 in the width direction W. The inner elastic member 81 of the present embodiment is located inside the width direction W with respect to the inner width base end edge 641, and is located most inside the width direction W among the three side elastic members 80. It is composed of a side elastic member 80. According to this configuration, the region between the outer edge 30E of the absorption core 30 and the width base end edge 64 can be pulled up toward the wearer by the inner elastic member 81. By improving the adhesiveness on the side of the absorption core 30 and raising the width base end edge 64, the width base end edge 64, which is the rising base point of the wall portion, is also raised, and the wall portion of the leakage-proof gather 60 is made higher. be able to.

The inner elastic member 81 may be located outside the width direction W from the center of the width direction W between the outer edge 30E and the width base end edge 64 of the absorption core 30. As shown in FIG. 3, in the present embodiment, the inner elastic member 81 is located outside the width direction W of the center CL64 of the outer edge 30E and the inner width base end edge 641 of the absorption core 30 in the width direction W. positioned. The region outside the width direction W of the center CL64 is less affected by the rigidity of the absorption core 30 than the region inside the center CL64, and it is difficult to maintain the intended shape. A region relatively distant from the absorption core 30 can be pulled up by the inner elastic member 81, and the absorbent article 1 can be arranged along the wearer's body, and lateral leakage can be suppressed.

The side elastic member 80 may have an outer elastic member 82 located outside the width direction W with respect to the width base end edge 64. The region outside the width direction W with respect to the width base end edge 64 can be pulled up toward the wearer by the outer elastic member 82. By pulling up the region inside the width direction W from the width base end edge 64, the wall portion that stands up from the width base end edge 64 as the base point does not fall outside the width direction W but falls inside the width direction W. Cheap. A wall may be provided to cover the side of the wearer's crotch. The outer elastic member 82 may be located outside at least one of the inner width base end edge 641 and the outer width base end edge 642 in the width direction W. However, preferably, the outer elastic member 82 may be located outside the inner width proximal edge 641 in the width direction W. The outer elastic member 82 of the present embodiment is located outside the width direction W with respect to the inner width base end edge 641, and is located most outside the width direction W among the three side elastic members 80. It is composed of a side elastic member 80 and a side elastic member 80 located at the center in the width direction W. According to this configuration, it is possible to prevent the wall portion of the inner leak-proof gather 601 from falling inward from falling outward, and it is possible to obtain the effect of providing the wall portion so as to cover the side of the crotch portion of the wearer.

The trailing edge 63R of the contracted portion 63 may be located posterior to the front edge 90F of the flap portion 90. In the present embodiment, the rear end edge 631R of the inner contraction portion 631 is located on the rear side of the front end edge 90F of the flap portion 90, and the rear end edge 632R of the outer contraction portion 632 is the front end edge 90F of the flap portion 90. Is consistent with. The mounting assistant pulls the fastening member and the flap portion 90 in the width direction W at the time of mounting. At this time, since the rear end edge 63R of the contraction portion 63 is located on the rear side of the front end edge 90F of the flap portion 90, the rear end edge of the contraction portion 63 is also located in the width direction W by pulling the flap portion 90 in the width direction W. Pulled out of. Therefore, the uprightness of the contracted portion 63 can be ensured, and the height of the wall portion of the leak-proof gather 60 can be secured. Further, preferably, the rear end edge 63R of the contracted portion 63 may be on the rear side of the front end edge of the fastening member. When the mounting assistant pulls the fastening member, the contracted portion can be easily pulled, and the uprightness of the contracted portion 63 can be further improved.

The absorbent article 1 may have a width elastic member 88 that is located outside the absorption core 30 in the front-rear direction L and expands and contracts in the width direction W. The trailing edge 88R of the width elastic member 88 of the present embodiment is separated from the trailing edge 1R of the absorbent article 1 and is located on the front side of the trailing edge 1R of the absorbent article 1. Further, the front end edge 88F of the width elastic member 88 is separated from the rear end edge 30R of the absorption core 30 and is located on the rear side of the rear end edge 30R of the absorption core 30. The outer edge of the width elastic member 88 is located inside the inner edge (the apex of the inner contraction portion 631) of the leak-proof gather 60 in the width direction W. The region outside the absorption core 30 in the front-rear direction L can be brought into close contact with the body by the width elastic member 88. Therefore, in the cross section along the width direction W, not only the side portion of the absorbent article 1 is raised toward the wearer by the leak-proof gather 60, but also the width is expanded and contracted in the cross section along the front-rear direction L. The sex member 88 can realize a bowl shape in which the end portion of the absorbent article in the front-rear direction L is raised toward the wearer. Not only lateral leakage but also leakage in the front-rear direction L can be suppressed.

The absorbent article 1 of the present embodiment is configured to secure an absorption capacity and suppress leakage by suppressing the shrinkage of the absorption core 30. Next, the configuration for suppressing the contraction of the absorption core 30 will be described in detail. The article fold FL1 may overlap the leak-proof gather 60 between the width base edge 64 and the inner leak-proof elastic member 691. In the present embodiment, the article crease FL1 overlaps the inner leak-proof gather 601 between the inner width base end edge 641 and the inner leak-proof elastic member 691. The article fold FL1 overlaps the leak-proof gather 60 between the width base end edge 64 and the inner leak-proof elastic member 691. The contraction force of the inner leak-proof elastic member 691 is transmitted to the absorption core 30 via the width base end edge 64. The article fold FL1 is arranged on the inner width base end edge 641 and the inner leak-proof elastic member 691, and the contraction force of the inner leak-proof elastic member 691 can be divided by the article crease FL1. It is possible to suppress the contraction force of the inner leak-proof elastic member 691 from being transmitted to the absorption core 30. It is possible to suppress the contraction of the absorption core 30 due to the contraction of the leakage-proof gather 60, and it is possible to secure an area where the absorption core 30 hits the body. Absorption capacity can be secured and leakage can be suppressed.

The inner width base end edge 641 is arranged outside the outer edge 30E of the absorption core 30 in the width direction W. Since the inner width proximal edge is located outside the width direction W of the outer edge 30E of the absorption core 30, the contraction force of the leakage-proof gather 60 is directly applied to the absorption core 30 via the inner width proximal edge 641. It does not propagate and the absorption core 30 is unlikely to shrink due to the shrinkage of the inner leakproof gather 601. Preferably, the entire area of the inner width base end edge 641 in the front-rear direction L does not have to overlap the absorption core 30. Similarly, the outer width base end edge 642 may be arranged outside the outer edge 30E of the absorption core 30 in the width direction W. The contraction force of the outer leakage-proof gather 602 does not directly propagate to the absorption core through the outer width proximal edge 642, and the absorption core 30 is less likely to contract due to the contraction of the outer leakage-proof gather 602.

At least one of the front proximal edge 65 and the posterior proximal edge 66 may be located in a region that does not overlap the absorption core 30. In the present embodiment, the outer anterior proximal edge 652, the outer posterior proximal edge 662, and the inner posterior proximal edge 661 are arranged in a region that does not overlap with the absorption core 30. Since at least one of the front base edge 65 and the rear base edge 66 does not overlap the absorption core 30, the contraction force of the leakage-proof gather 60 is applied to the absorption core 30 via the front base edge 65 and the rear base edge 66. The absorption core 30 is unlikely to shrink due to the shrinkage of the leak-proof gather 60. It is possible to suppress the contraction of the absorption core 30 due to the contraction of the leakage-proof gather 60, and it is possible to secure an area where the absorption core 30 hits the body. Absorption capacity can be secured and leakage can be suppressed.

The contraction portion 63 is located inside the inner contraction portion 631 in the width direction W with respect to the width base end edge 64 and outside the width direction W with respect to the width base end edge 64 in the extended state of the absorbent article 1. It may have an outer contraction portion 632 and. The inner contraction portion 631 is located inside the width direction W from the inner width proximal edge 641, and the outer contraction portion 632 is located outside the width direction W than the outer width proximal edge 642. The inner contraction portion 631 constitutes a so-called inward tilting gather, and the outer contraction portion 632 constitutes a so-called outward tilting gather. Both leak-proof gathers allow for a wider surface to contact the body. Further, since the contraction portions are arranged on both sides of the width base end edge 64 and each contraction portion follows the body, the wall portion is compared with the configuration in which the length of the width direction W of one contraction portion is long. It is easy to maintain the uprightness of.

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

According to the present invention, it is possible to provide an absorbent article capable of expanding the accommodation space of the leak-proof gather while ensuring the height of the wall portion of the leak-proof gather.

1: Absorbent article 11: Surface sheet (skin surface sheet)
12: Side sheet (skin sheet)
20: Non-skin surface sheet 30: Absorption core 30E: Outer edge 60: Leakage-proof gather 601: Inner leak-proof gather 602: Outer leak-proof gather 63: Shrinkage 631: Inner shrinkage 632: Outer shrinkage 64: Width base end Edge 65: Front base end edge 66: Rear base end edge 69: Leakage-proof elastic member 80: Side elastic member 81: Inner elastic member 82: Outer elastic member 88: Width elastic member 90: Flap portion 91: First 1 Fastening member (fastening member)
92: Second fastening member (fastening member)
93: Base material sheet 95: Target part FL1: Article crease L: Front-back direction S1: Front waist circumference area S2: Rear waist circumference area S3: Inseam area T1: Skin surface side T2: Non-skin surface side W: Width direction

Claims (10)

The front waist area, the rear waist area, and the inseam area located between the front waist area and the rear waist area,
The front-rear direction from the front girth area to the rear girth area and the width direction orthogonal to the front-rear direction,
An absorption core that straddles the inseam area and extends to at least one of the front waist area and the rear waist area.
An absorbent article comprising an upright leak-proof gather having a width proximal edge serving as an upright fulcrum of the contraction portion on the lateral side of the contraction portion in the width direction.
Before use, the absorbent article extends along the anteroposterior direction and is arranged in pairs with the center of the absorbent article in the width direction as a base point on the skin surface of the absorbent article. It is folded so that the sides face each other,
The width base end edge is arranged outside the width direction of the outer edge of the absorption core, at least in the front waist circumference area and the rear waist circumference region.
The article crease overlaps the absorption core at least in the front girth region and the rear girth region .
It has a width elastic member located on at least one of the front side of the absorption core and the rear side of the absorption core and expands and contracts in the width direction.
The article fold is an absorbent article located outside the width direction of the outer edge of the width stretchable member. The leak-proof gather includes a front base edge that serves as an upright fulcrum of the contraction portion on the front side of the contraction portion and a rear base end edge that serves as an upright fulcrum of the contraction portion on the rear side of the contraction portion. Have,
The absorbent article according to claim 1, wherein at least one of the anterior proximal edge and the posterior proximal edge is arranged in a region overlapping the absorption core. It has a side elastic member that is located outside the width direction of the outer edge of the absorption core and expands and contracts in the front-rear direction.
The absorbent article according to claim 1 or 2, wherein the side elastic member has an inner elastic member located inside the width proximal edge in the width direction. The absorbent article according to claim 3, wherein the inner elastic member is located outside the width direction of the center of the outer edge of the absorption core and the width base end edge in the width direction. It has a side elastic member that is located outside the width direction of the outer edge of the absorption core and expands and contracts in the front-rear direction.
The absorbent article according to any one of claims 1 to 4, wherein the side elastic member has an outer elastic member located outside the width proximal edge in the width direction. At least in the rear girth region, a flap portion extending outward from the absorption core in the width direction and having a fastening member joined to the front girth region is provided.
The absorbent article according to any one of claims 1 to 5, wherein the trailing edge of the contracted portion is located on the rear side of the front edge of the flap portion. The leak-proof gather has an inner leak-proof elastic member located inside the width proximal edge in the stretched state of the absorbent article.
The absorbent article according to any one of claims 1 to 6 , wherein the article fold overlaps the leakage-proof gather between the width base end edge and the inner leakage-proof elastic member. The leakage preventing gather in side before the constriction, the a front base end edge serving as a standing supporting point of constriction, the rear side than the contraction portion, the proximal edge after the standing fulcrum of the constriction And have
The absorbent article according to any one of claims 1 to 7 , wherein at least one of the front base edge and the rear base edge is provided in a region that does not overlap with the absorption core. A non-bonded region in which the non-skin surface of the leak-proof gather is not joined to a member in contact with the non-skin surface of the leak-proof gather in at least a part of the laminated region where the leak-proof gather and the absorption core overlap. The absorbent article according to any one of claims 1 to 8 , wherein the product is provided. The contracted portion is an inner contracted portion located inside the width base end edge in the width direction and an outer side located outside the width base end edge in the width direction in the extended state of the absorbent article. The absorbent article according to any one of claims 1 to 9 , which has a shrinkage portion.

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