CN118021541A

CN118021541A - Absorbent article

Info

Publication number: CN118021541A
Application number: CN202311477262.2A
Authority: CN
Inventors: 吉田英聪
Original assignee: Oji Holdings Corp
Current assignee: Oji Holdings Corp
Priority date: 2022-11-11
Filing date: 2023-11-08
Publication date: 2024-05-14

Abstract

The present disclosure relates to absorbent articles. An absorbent article (1) is provided with: an absorber (8) provided at a position including the crotch region (1B) and configured to absorb discharged liquid of the wearer; and outer bodies (4, 5) disposed on the non-skin surface side of the wearer than the absorber (8). In the end region in the longitudinal direction of the absorber (8), the widthwise end of the absorber (8) and the outer case (4, 5) are not bonded.

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article.

Background

Absorbent articles that absorb liquids such as urine and body fluids are known (for example, japanese patent application laid-open No. 2021-79034). The absorbent article is provided with a front body region located on the abdomen side of the wearer, a crotch region located in the crotch, and a rear body region located on the back side in this order in the longitudinal direction in a worn state, and is configured to suppress leakage of discharged materials such as urine.

Disclosure of Invention

Since the skin surface on the abdomen side and the back side of the wearer is flatter than the skin surface on the crotch side, when the discharged material intrudes into the abdomen side and the back side, the discharged material may move along the skin surface and leak out of the absorbent article.

The present invention provides a technique capable of suppressing leakage of discharged matter.

An absorbent article according to one aspect of the present invention is provided with a front body region located on the abdomen side of a wearer in a wearing state, a crotch region located in a crotch, and a rear body region located on the back side in this order in the longitudinal direction, and has a length along the longitudinal direction and a width along a width direction orthogonal to the longitudinal direction. The absorbent article is provided with: an absorber provided at a position including the crotch region and configured to absorb discharged liquid of the wearer; and an outer body disposed on the non-skin surface side of the wearer with respect to the absorber. In the end region in the longitudinal direction of the absorber, the widthwise end of the absorber and the outer body are not bonded.

In the above aspect, the absorbent article may include: a top sheet provided on the skin surface side of the wearer with respect to the absorber, the top sheet having a water permeable region; and a leakage preventing wall formed of a water impermeable leakage preventing sheet disposed on the skin surface side of the top sheet, the leakage preventing wall being provided at the widthwise end portion of the absorber so as to extend in the longitudinal direction and stand up toward the skin surface side. The leakage preventing wall may be joined to the top sheet and may be raised from a joining end portion with the top sheet toward the skin surface side. The leakage preventing wall may have: a base end portion side sheet extending inward in the width direction from the joint end portion; and a base end fixing portion for fixing the both longitudinal ends of the base end side sheet to the top sheet. The 1 st stretchable member extending in the longitudinal direction may be provided in an elongated state on the base end portion side sheet. The widthwise end portion of the absorbent body and the outer body may be non-bonded in the longitudinal direction range extending from a portion other than the portion fixed by the base end fixing portion in the base end portion side sheet.

In the above aspect, in the range in the longitudinal direction in which the base end fixing portion is provided, the widthwise end portion of the absorber and the outer body may be non-bonded.

In the above aspect, the leakage preventing wall may have: a bending portion provided on a side edge of the proximal portion side sheet on the inner side in the width direction, and bending from the proximal portion side sheet toward the skin surface side and toward the outer side in the width direction; a free end side piece extending outward in the width direction from the bending portion; a free end fixing portion for fixing the two ends of the free end side sheet in the longitudinal direction to the base end side sheet, respectively; and a free end portion provided at the tip end of the free end portion side sheet. The free end side sheet may be provided with a 2 nd stretchable member extending in the longitudinal direction so as to overlap with a non-bonded region between the widthwise end of the absorbent body and the outer body.

In the above aspect, the absorbent body may have a pad-shaped absorbent core configured to absorb the discharged liquid of the wearer. The absorber may be bent so as to be convex toward the skin surface side, and a convex portion extending in the width direction may be provided so as to overlap with a side edge of the proximal portion side sheet on the inner side in the width direction from the non-skin surface side. In the range of the length direction in which the convex portions are formed, the joined end portions of the base end portion side sheet and the top sheet may be located further to the outside in the width direction than the absorbent core.

In the above aspect, the outer body may have a waist opening configured to allow insertion of the abdomen circumference of the wearer and two leg opening configured to allow insertion of the legs of the wearer. The outer body may be provided with a 3 rd stretchable member extending along one leg hole opening, across the crotch region, and along the other leg hole opening in an extended state on the abdomen side of the wearer. In the overlapping region of the crotch region where the 3 rd stretchable member and the absorber overlap, a non-adhesive region where the absorber and the outer body are not adhered may be provided. The absorber and the outer body may be bonded before and after the longitudinal direction of the unbonded area.

In the above aspect, the absorbent article may include a water impermeable end-pressing sheet that covers the longitudinal end portion of the absorber from the skin surface side of the wearer. In the region where the end pressing sheet and the absorber overlap, the widthwise end portion of the absorber and the outer body may be non-bonded.

In the above aspect, the outer body and the absorber may be non-bonded in a region overlapping the widthwise ends of the outer body and the absorber, including a region overlapping the widthwise ends of the 1 st stretchable member and the absorber and a region extending from the region to both sides in the longitudinal direction, in a side end overlapping region.

According to the present invention, leakage of the discharged material can be suppressed.

Drawings

The features, advantages and technical and industrial significance of the exemplary embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, in which like numerals denote like elements.

Fig. 1 is a perspective view of a pants-type disposable diaper for adults according to the embodiment.

Fig. 2 is an exploded perspective view of a diaper according to the embodiment.

Fig. 3A is an expanded view of a diaper according to an embodiment.

Fig. 3B is an expanded view of the diaper according to the embodiment.

Fig. 4 is a plan view for explaining the bonding pattern between the exterior body and the interior body of the diaper according to the embodiment.

Fig. 5 is a cross-sectional view of the diaper in the case of being cut at the line AA of fig. 3B.

Fig. 6 is a cross-sectional view of the diaper in the case of being cut along the line BB in fig. 4.

Fig. 7 is a plan view showing the diaper according to the embodiment, with the absorbent body, the top sheet, and the side sheet drawn out.

Fig. 8 is a cross-sectional view of the diaper in the case of being cut along the line CC in fig. 7.

Fig. 9 is a cross-sectional view of the absorber in the case of cutting with the DD line in fig. 7.

Fig. 10 is a plan view showing the diaper according to the embodiment, in which the absorber and a part of the string rubber are extracted.

Fig. 11 is a cross-sectional view of the diaper taken along line EE in fig. 7.

Fig. 12A is a diagram illustrating the convex portion in more detail.

Fig. 12B is a diagram illustrating the convex portion in more detail.

Fig. 12C is a diagram illustrating the convex portion in more detail.

Fig. 13 is a conceptual view of the vicinity of the absorber end sheet portion joined to the outer body.

Fig. 14 is a view showing the longitudinal end portion of the absorbent body including the three-dimensional gather.

Fig. 15 is a cross-sectional view schematically showing a state in which the side flap portion of the diaper according to the embodiment is raised.

Fig. 16 is a diagram showing a more preferable form of the bonded portion.

Detailed Description

< Embodiment >

Hereinafter, a diaper according to an embodiment of the present invention will be described with reference to the drawings. The following embodiments are examples, and the present invention is not limited to these embodiments.

Fig. 1 is a perspective view of an adult pants-type disposable diaper (hereinafter, simply referred to as "diaper") according to an embodiment. In a diaper, a direction connecting a front body disposed to face an abdomen of a wearer and a rear body disposed to face a back is set as a longitudinal direction. The crotch portion disposed in the crotch (disposed opposite the crotch) of the wearer is disposed between the front body (one side in the longitudinal direction) and the rear body (the other side in the longitudinal direction) (the center in the longitudinal direction). In addition, when the diaper is worn on a wearer, the side facing the skin of the wearer is referred to as the skin surface side, and the opposite side to the skin surface side is referred to as the non-skin surface side. The direction connecting the skin surface side and the non-skin surface side is referred to as the thickness direction. The direction perpendicular to both the longitudinal direction and the thickness direction is defined as the width direction. In addition, the thickness direction is defined as a planar view. The diaper 1 has a length along the longitudinal direction and a width along the width direction orthogonal to the longitudinal direction, and is worn on the crotch of a wearer. The term "direction" used in the present application means a direction which coincides with the front, rear, left, and right of the wearer when the diaper 1 is worn on the wearer. For example, in the present application, the term "right-left direction" means a direction which coincides with the right-left direction of the wearer when the diaper 1 is worn on the wearer. In the following description, unless otherwise specified, "width direction" refers to the width direction of the diaper, and "length direction" refers to the length direction of the diaper.

In the present embodiment, as an example of the absorbent article, the pants-type disposable diaper 1 having a tubular structure having an opening into which the abdominal region of the wearer enters and a pair of left and right openings through which the left and right lower limbs of the wearer pass is exemplified, but the "absorbent article" in the present application is not limited to the pants-type disposable diaper for adults. The "absorbent article" in the present application includes a pants-type disposable diaper for children. The term "absorbent article" as used herein includes various types of absorbent articles such as a belt-type disposable diaper having a tubular structure, which can cover the abdomen and crotch by attaching a belt fixed near one end of a sheet-like member covering the crotch (pudendum) of the wearer from the front to the back to the other end of the sheet-like member.

The diaper 1 has: the crotch region 1B is a portion corresponding to a crotch region that covers the pudendum (crotch) of the wearer in a worn state; a front body region 1F, which is a region corresponding to a front body at the waist of the wearer, for covering the abdomen side of the wearer; and a back region 1R, which is a portion corresponding to the back of the waist of the wearer, for covering the back side of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B. The rear body region 1R is located on the rear side of the crotch region 1B. Since the diaper 1 in the present embodiment is a pants-type disposable diaper, the left edge of the front body region 1F and the left edge of the rear body region 1R are joined to each other. In addition, the right edge of the front body region 1F and the right edge of the rear body region 1R are joined to each other. Thus, in the diaper 1, the trunk opening 2T is formed by the upper edge of the front body region 1F and the upper edge of the rear body region 1R. In the diaper 1, a left leg opening 2L is formed in a left portion of the crotch region 1B where the above-described joining is not performed, and a right leg opening 2R is formed in a right portion of the crotch region 1B. The trunk opening 2T is an example of a "waist opening" of the present disclosure. The left lower limb opening 2L and the right lower limb opening 2R are examples of the "leg hole opening" of the present disclosure. The diaper 1 is worn such that the left leg of the wearer is inserted into the left leg opening 2L, the right leg of the wearer is inserted into the right leg opening 2R, and the trunk of the wearer is fitted into the trunk opening 2T. The diaper 1 thus worn is fixed to the wearer's body in a state in which the front body region 1F is disposed on the abdomen side of the wearer, the rear body region 1R is disposed on the back side of the wearer, and the left and right lower limb openings 2L and 2R surround the thighs of the wearer. Since the diaper 1 is fixed to the body of the wearer in this manner, the wearer can freely move while wearing the diaper 1. Hereinafter, the diaper 1 in the finished state shown in fig. 1 is set to a side facing upward in the worn state as a "torso opening side (waist opening side)", and a side facing downward as a "crotch side".

In the diaper 1, an absorber capable of absorbing and retaining liquid is mainly disposed around the crotch region 1B. The absorber is provided at a position including the crotch region 1B, and is configured to be able to absorb the discharged liquid of the wearer. In the diaper 1, in order to suppress formation of a gap, which is a flow-out path of liquid, between the diaper 1 and the skin of the wearer, a three-dimensional gather 3BL is provided in the left leg opening 2L surrounding the thigh of the left leg of the wearer, a three-dimensional gather 3BR is provided in the right leg opening 2R surrounding the thigh of the right leg of the wearer, and a waist gather 3R is provided in a portion surrounding the abdomen of the wearer. The three-dimensional gathers 3BL and 3BR are examples of "leakage preventing walls" of the present disclosure. Further, leg gathers 3LF, 3LR (leg gathers 3LR are not shown in fig. 1) are provided at positions surrounding the root portions of the legs of the wearer. Further, the leg gathers 3LF are provided in the front body region 1F, and the leg gathers 3LR are provided in the rear body region 1R. In fig. 1, only the leg gathers 3LF are illustrated. The three-dimensional gathers 3BL, 3BR and the waist gather 3R are brought into close contact with the skin of the wearer by the elastic force of the string rubber. Further, the leg gathers 3LF, 3LR prevent the occurrence of gaps between the root portions of the legs of the wearer and the diaper 1. Thus, the discharged matter discharged from the pudendum of the wearer is absorbed by the absorber of the diaper 1 almost without leaking out from the diaper 1.

The diaper 1 can be used in combination with an inner pad not shown. The inner pad is a substantially rectangular absorbent article provided with an absorber, and absorbs discharged liquid. When the diaper 1 and the inner pad are used in combination, the inner pad is placed on the skin surface side of the diaper 1 so that the discharge hole of the wearer comes into contact with the inner pad. The discharged liquid is first absorbed by the inner pad, and only the discharged liquid which has not been absorbed by the inner pad reaches the absorber of the diaper 1 and is further absorbed by the absorber. Thus, even when the amount of discharged liquid is large, leakage of discharged liquid from the diaper 1 can be prevented. In addition, when the amount of discharged liquid is small and the discharged liquid can be absorbed by the inner pad, only the inner pad needs to be replaced even if discharged liquid is generated, so that nursing cost can be reduced. In addition, the diaper 1 can be used for a long period of time.

Fig. 2 is an exploded perspective view of the diaper 1 according to the embodiment. The diaper 1 has a cover sheet 4 and an inner cover sheet 5. The cover sheet 4 and the inner cover sheet 5 are sheets that are bonded together to form a substantially hourglass shape (gourd-shape) of the outer surface of the diaper 1. The cover sheet 4 and the inner cover sheet 5 have the same shape except for the front body region 1F side end and the rear body region 1R side end. In a state of being worn on a wearer, the cover sheet 4 is laminated on the non-skin surface side of the wearer, and the inner cover sheet 5 is laminated on the skin surface side. Between the cover sheet 4 and the inner cover sheet 5, a string rubber for forming the waist gather 3R and the leg gathers 3LF, 3LR is provided. Further, a band-shaped expansion member such as rubber can be appropriately selected instead of the wire rubber.

For example, nonwoven fabrics made of a liquid impermeable thermoplastic resin may be used as the material of the cover sheet 4 and the inner cover sheet 5 in order to suppress leakage of discharged materials. Here, examples of the liquid-impermeable thermoplastic resin include Polyethylene (PE) and polypropylene (PP). Hereinafter, the absorber 8 and the members obtained by combining the back sheet 6, the top sheet 9, and the side sheets 10L, 10R with the absorber 8 are sometimes referred to as an inner body, and as a concept corresponding to the inner body, the cover sheet 4 and the inner cover sheet 5 on which the wired rubber is disposed are sometimes referred to as an outer body (an example of an "outer body" in the present disclosure). The inner body includes the absorber 8 and is disposed on the skin surface side of the wearer, and the outer body is disposed on the non-skin surface side of the wearer than the absorber 8 and the inner body.

The diaper 1 has a back sheet 6, an absorber 8, and a top sheet 9 having a water permeable region laminated in this order on the wearer side surfaces of the cover sheet 4 and the inner cover sheet 5. The back sheet 6 is a substantially rectangular sheet having a length extending from the front body to the rear body of the wearer through the crotch in the longitudinal direction and a predetermined width in the width direction perpendicular to the longitudinal direction. The absorber 8 and the top sheet 9 are sheet-like members having a substantially rectangular appearance, like the back sheet 6, and are sequentially laminated on the back sheet 6 in a state where the longitudinal direction matches the longitudinal direction of the back sheet 6. The back sheet 6 is a sheet made of a liquid impermeable thermoplastic resin for suppressing leakage of discharged material. The top sheet 9 is a sheet-like member provided on the skin surface side of the wearer with respect to the absorber 8 so as to cover the water absorbing surface of the absorber 8. The top sheet 9 has liquid permeability in part or all of it. Thus, in a state where the diaper 1 is worn, liquid discharged from the wearer is impregnated into the absorber 8 through the topsheet 9 capable of contacting the skin of the wearer, and absorbed by the absorber 8. Examples of the liquid-permeable sheet include woven fabrics, nonwoven fabrics, and porous films. In addition, the top sheet 9 may have hydrophilicity.

The absorber 8 is disposed at a position including the crotch region 1B, and is disposed such that one end portion in the longitudinal direction is located in the front body region 1F and the other end portion is located in the rear body region 1R. The absorbent body 8 has a pad-like absorbent core 8c composed of 1 or more absorbent pads and a core wrap sheet 7 (water permeable sheet) wrapping the absorbent core 8c, and is configured to be capable of absorbing discharged liquid of a wearer. The absorbent core 8c is disposed at a position including the crotch region 1B, and is disposed such that one end portion in the longitudinal direction is located in the front body region 1F and the other end portion is located in the rear body region 1R. The absorbent core 8c is substantially hourglass-shaped having narrowed portions in the crotch region 1B. The absorbent core 8c has a structure in which a particulate absorbent resin (high molecular absorbent material) such as SAP (super absorbent polymer: super Absorbent Polymer) which is a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining water is held in the gaps between the short fibers of cellulose fibers such as pulp fibers, rayon fibers, and cotton fibers, and the short fibers after hydrophilization treatment of synthetic fibers such as polyethylene, polypropylene, and polyethylene terephthalate. When the absorbent core 8c absorbs liquid discharged from the wearer, the absorbent resin in the gaps held in the short fibers is swelled, and the liquid is held in the short fibers. In the present embodiment, the absorbent core 8c is of a substantially hourglass shape narrowed near the central portion, but the absorbent core 8c may take an appropriate shape according to the purpose. Examples of the shape of the absorbent core 8c include a rectangular shape, an elliptical shape, and various other shapes.

The core wrap sheet 7 is a thin liquid permeable sheet. The core wrap sheet 7 is wider than the absorbent core 8c, and the SAP of the absorbent core 8c is less likely to be mixed into other structures by wrapping the absorbent core 8c with the core wrap sheet 7. In addition, the absorbent core 8c is suppressed from running out. The core wrap sheet 7 can be formed of pulp fibers, and as an example, a tissue can be used. The core wrap sheet 7 may be 1 sheet, but may be composed of 2 sheets, that is, an upper sheet disposed on the skin surface side of the wearer and a lower sheet disposed on the non-skin surface side of the wearer and wound around the side surface of the absorbent core 8c and the skin surface side. When the core wrap sheet 7 is formed of 2 sheets, the width direction end portion of the upper side sheet may be covered with another sheet (for example, side sheets 10L and 10R, back sheet 6, and top sheet 9 described later). The absorbent body 8 is enclosed by the back sheet 6 and the top sheet 9, and the sample can be prevented from being removed by these sheets, so that the core wrap sheet 7 may not be provided.

The absorbent core 8c is covered over its entire surface with a back sheet 6 and a top sheet 9 described later. Therefore, the absorbent core 8c can be protected by these sheets, and a structure in which the core wrap sheet 7 is not provided may be considered. The backsheet 6 is longer than the absorbent core 8c in the longitudinal direction. Therefore, the absorbent core 8c does not extend near the longitudinal end portions of the absorbent body 8, and the end sheet portion 8e of the backsheet 6 extending longer in the longitudinal direction than the absorbent core 8c is included. The end sheet portion 8e may be formed by adhering the top sheet 9 to each other by an adhesive, and extending along with the back sheet 6.

In the present embodiment, the length in the longitudinal direction of the core wrap sheet 7 and the absorbent core 8c is the same, but a configuration may be considered in which the core wrap sheet 7 extends in the longitudinal direction beyond the absorbent core 8c and extends to the end sheet portion 8 e. In this case, the core wrap sheet 7 may be bonded to the back sheet 6 by an adhesive such as a hot melt adhesive at the end sheet portion 8 e. In this configuration, an adhesive such as hot melt may be applied between the core wrap sheet 7 on the skin surface side and the core wrap sheet 7 on the non-skin surface side, and the core wrap sheet 7 on the skin surface side and the core wrap sheet 7 on the non-skin surface side may be bonded to each other. The end sheet portion 8e can be provided with the core wrap sheet 7 extending in a state of not covering the absorbent core 8c, whereby the rigidity of the end sheet portion 8e can be improved.

In the following description, the portion of the absorbent core 8c having a shape narrowed in the width direction in the crotch region 1B, which is the widest portion, is referred to as a wide portion 88A, and the portion having the narrowest width is referred to as a narrowest portion 88B (see fig. 3B). The portion that gradually widens from the crotch region 1B to the front body region 1F or the rear body region 1R, which is sandwiched between the wide portion 88A and the narrowest portion 88B, is referred to as a widened portion 88C.

The back sheet 6, the absorber 8, and the top sheet 9 all extend from the front body region 1F to the back body region 1R. Thus, when the back sheet 6, the absorber 8, and the top sheet 9 are laminated to cover the wearer's pudendum (crotch), the respective longitudinal ends of the back sheet 6, the absorber 8, and the top sheet 9 are positioned on the wearer's abdomen side and back side. That is, the pudendum of the wearer is covered with the absorber 8 from the abdomen side to the back side of the wearer. Therefore, regardless of the posture of the wearer in which the wearer is facing the abdomen down and the posture of the wearer in which the wearer is facing the back down, the discharged liquid is discharged outside the body, and the discharged liquid is brought into contact with the absorber 8 via the top sheet 9.

The diaper 1 has elongated belt-shaped side panels 10L and 10R for forming the above-described three-dimensional gathers 3BL and 3 BR. The side sheets 10L and 10R are examples of "leakage preventing sheets" of the present disclosure. The side sheets 10L and 10R are water impermeable nonwoven fabric sheets provided at both ends of the absorber 8 in the width direction, and constitute a pair of side sheets covering the side surfaces of the absorber 8 in the width direction. In practice, the side panels 10L, 10R are provided at the long side portions of the top sheet 9. The side sheets 10L and 10R are bonded with the wire rubbers 10L1 and 10R1 along the longitudinal direction. More specifically, the string rubbers 10L1, 10R1 are provided so as to be stretched in the worn state. As a result, the edge 4F4 that is the left edge of the front region 1F and the edge 4R4 that is the left edge of the rear region 1R are joined to each other by the cover sheet 4. In addition, an edge 4F5 of the cover sheet 4, which is the right edge of the front body region 1F, and an edge 4R5, which is the right edge of the rear body region 1R, are joined to each other. As a result, as in the diaper 1 in the finished state shown in fig. 1, the side panels 10L and 10R are pulled up in the longitudinal direction by the contraction force of the string rubbers 10L1 and 10R1, and are raised from the exterior body (top sheet 9) along the folding lines 10L2 and 10R 2. As a result, three-dimensional gathers 3BL, 3BR (described in detail below) are formed which prevent the outflow of liquid from the left and right lower limb openings 2L, 2R. The fold lines 10L2, 10R2 are joining end portions on the inner side in the width direction of the side panels 10L, 10R, which are joined to the top sheet 9, and are formed at positions overlapping the top sheet 9. The joining method of the edge 4F4 and the edge 4R4 and the joining method of the edge 4F5 and the edge 4R5 are not particularly limited, but may be performed by, for example, heat sealing, high-frequency sealing, ultrasonic sealing, or the like.

The diaper 1 further includes an end sheet 11F laminated on the wearer-side surface in the front region 1F of the cover sheet 4 and an end sheet 11R laminated on the wearer-side surface in the back region 1R of the cover sheet 4 with the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L and 10R interposed therebetween. The end sheets 11F and 11R are long sheets that overlap the cover sheet 4 and the inner cover sheet 5 at one end side in the longitudinal direction of the top sheet 9. The end pieces 11F, 11R are non-water-impermeable nonwoven fabrics, and reinforce the cover piece 4 and the inner cover piece 5 mainly at the waist abutment portion of the diaper 1. The end pieces 11F and 11R are coated with an adhesive, and bonded to the inner cover piece 5 by the adhesive. The end sheets 11F, 11R are disposed closer to the skin surface side than the laminate (i.e., the inner body) formed by the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L, 10R, and prevent the end portions of the laminate from directly contacting the skin surface to give the wearer a feeling of discomfort. The end pieces 11F, 11R are one example of "end pressing pieces" of the present disclosure.

The cover sheet 4 is folded at one end side at folding lines 4FF and 4RF shown in fig. 2. The above-described waist gather 3R is formed by bonding the string rubbers (linear rubbers) 4F1, 4F2 in an elongated state in the front region 1F of the cover sheet 4 and bonding the string rubbers (linear rubbers) 4R1, 4R2 in an elongated state in the rear region 1R of the cover sheet 4. More specifically, the string rubbers 4F1, 4F2, 4R1, 4R2 are provided so as to be stretched in the worn state. The string rubbers 4F1, 4F2 are provided in order of the string rubbers 4F1, 4F2 from the side of the fold line 4FF along the fold line 4FF that forms the upper edge of the precursor region 1F when folded. The string rubbers 4R1, 4R2 are also provided in the order of the string rubbers 4R1, 4R2 from the side of the folded line 4RF along the folded line 4RF that forms the upper edge of the rear body region 1R when folded.

Thus, the string rubbers 4F1, 4F2 are provided on the cover sheet 4 in such an orientation that the longitudinal direction, which is the extension and contraction direction, is the right and left direction of the diaper 1. The string rubbers 4R1, 4R2 are provided on the cover sheet 4 in such a manner that the longitudinal direction, which is the extension and contraction direction, is the lateral direction of the diaper 1. Thus, when the edge 4F4 and the edge 4R4 are joined to each other and the edge 4F5 and the edge 4R5 are joined to each other, the wire rubbers 4F1 and 4F2 and the wire rubbers 4R1 and 4R2 form a substantially annular stretchable member surrounding along the trunk opening 2T, and function to shrink the trunk opening 2T in the trunk-surrounding direction. That is, the string rubbers 4F1 and 4F2 and the string rubbers 4R1 and 4R2 exert a contractive force to bring the diaper 1 into close contact with the wearer, thereby preventing a gap from being formed between the diaper 1 and the abdominal circumference of the wearer. A part of the plurality of string rubbers 4F2 and 4R2 on the crotch region 1B side overlaps with the absorber 8.

The string rubbers 4F1, 4R1 are provided so as to extend in the left-right direction along portions that are edges of the upper sides of the front body region 1F and the rear body region 1R shown in fig. 1. The wire rubbers 4F2, 4R2 are disposed in parallel with a predetermined interval. The string rubbers 4F1, 4R1 fasten relatively strongly around the abdomen of the wearer on the upper side than the string rubbers 4F2, 4R2 in a state where the diaper 1 is worn. The string rubbers 4F1 and 4R1 serve to prevent the diaper 1 from being brought into close contact with the wearer, thereby preventing the wearing position from being shifted and preventing discharged materials from leaking from the abdomen and back. The string rubbers 4F2, 4R2 alleviate the sense of compression to the wearer caused by the contraction force of the string rubbers 4F1, 4R 1. In addition, in the case of using the inner pad, the displacement of the inner pad is suppressed.

The cover piece 4 is folded at the folded lines 4FF and 4RF to extend to the arrangement region of the wire rubber 4F1 and the wire rubber 4R1, and the arrangement region of the wire rubber 4F1 and the wire rubber 4R1 is reinforced by the folded portion. The end pieces 11F and 11R are provided in the arrangement regions of the string rubbers 4F2 and 4R2 to which the cover piece 4 folded at the folding lines 4FF and 4RF does not extend, and reinforce the arrangement regions of the string rubbers 4F2 and 4R 2.

Further, the wire rubber 4F3 and the wire rubber 4R3 are bonded to the cover sheet 4 in an elongated state. More specifically, the string rubbers 4F3, 4R3 are provided so as to be stretched in the worn state. The string rubber 4F3 and the string rubber 4R3 are expansion members provided in the cover sheet 4 in the region on the crotch region 1B side of the string rubbers 4F2 and 4R 2. However, unlike the other string rubbers extending in the width direction of the diaper 1 from the left end to the right end of the cover sheet 4, the string rubbers 4F3, 4R3 are arranged so as to curve in the direction of the crotch region 1B, and overlap with a part of the core wrap sheet 7 at the narrowed portion of the hourglass-shaped absorbent core 8 c. The string rubber 4F3 is an example of the "3 rd stretchable member" of the present disclosure. The portions of the cover sheet 4 to which the string rubbers 4F3, 4R3 are attached are folded by the string rubbers 4F3, 4R3 themselves contracting in the extending direction, and function as leg gathers 3LF, 3LR that bring the diaper 1 into close contact with the thighs of the wearer.

Fig. 3A and 3B are diagrams schematically showing a state in which the diaper 1 according to the embodiment is developed and extended. Fig. 3A schematically shows an internal configuration of the diaper 1 in a developed and elongated state when viewed from the left side. Fig. 3B is a plan view schematically showing the diaper 1 in an unfolded and elongated state. In fig. 3B, the side panels 10L and 10R and the end panels 11F and 11R are not shown.

As shown in fig. 3B, the string rubber 4F3 forming the leg gathers 3LF is provided so as to enter along the legs of the wearer at the right and left lower limb openings 2R and 2L of the front body region 1F side edges when the diaper 1 is assembled. The thread rubber 4F3 is provided in the crotch region 1B on the front side so as to cross in the left-right direction (width direction), and overlaps the widened portion 88C of the absorbent core 8C. At the portion where the linear rubber 4F3 is disposed so as to cross in the left-right direction in this way, the linear rubber 4F3 and the absorber 8 overlap in the thickness direction of the diaper 1. The widthwise central portion of such a transverse region is a region corresponding to the urethral orifice of the wearer when the diaper 1 is worn. In the region where the absorber 8 is overlapped in the thickness direction, the arrangement pattern of the wire rubber 4F3 is not limited to the crossing as shown in fig. 3B. The extending direction of the wire rubber 4F3 may have a component in the width direction, and the width direction component in the extending direction of the wire rubber 4F3 is preferably larger than the length direction component.

On the other hand, the cord rubber 4R3 forming the leg gathers 3LR is provided along the edges of the rear body region 1R side of the right and left lower limb openings 2R and 2L. In the crotch region 1B on the rear body side, the tip end portion of the cord rubber 4R3 faces the width direction. However, the wire rubber 4R3 is cut at the widthwise central portion, and the left wire rubber 4R3 and the right wire rubber 4R3 are not connected. The thread rubber 4R3 extends inward in the width direction in the crotch region 1B on the rear body side to a position overlapping the absorbent core 8C, and overlaps the widened portion 88C of the absorbent core 8C and the core wrap sheets 7 on both sides in the width direction of the widened portion 88C.

The outer body (more specifically, the inner cover sheet 5) and the absorber 8 are appropriately bonded to each other with the back sheet 6 interposed therebetween from the front region 1F to the back region 1R. However, in the region where the line rubber 4F3 crosses in the precursor region 1F as shown in fig. 3B, the inner cover sheet 5 and the absorber 8 are not bonded (set as a non-bonded region 13). In fact, in the non-bonded region 13, the inner cover sheet 5 and the back sheet 6 are not bonded. In the present embodiment, the non-adhesive region 13 is provided in the entire overlapping region of the crotch region 1B where the linear rubber 4F3 and the absorber 8 overlap. That is, the non-adhesive region 13 is formed between both ends in the width direction of the absorber 8.

Here, the non-adhesive region 13 is provided so as to include a region corresponding to the urethral orifice of the wearer (hereinafter, referred to as "urethral orifice corresponding region") and a region corresponding to the inguinal region of the wearer (hereinafter, referred to as "inguinal corresponding region"). The urethral-opening corresponding region is a region where the urethral opening of the wearer is located in the wearing state of the diaper 1. The groin-corresponding region is a region where the groin of the wearer is located in the wearing state of the diaper 1. In addition, as shown in fig. 3B, in the non-adhesive region 13, the wire rubber 4F3 crosses. The diaper 1 lifts the cover sheet 4 and the inner cover sheet 5 toward the skin surface side by the contraction force of the string rubber 4F 3. In general, the absorbent body in the crotch region absorbs urine and becomes heavier, and is likely to be separated from the skin surface of the wearer, and the three-dimensional gathers may also be separated from the skin surface due to the separation of the absorbent body from the skin surface. In contrast, in the diaper 1 according to the present embodiment, the absorber 8 in the crotch region 1B is lifted up to the skin surface side by the string rubber 4F3, so that the absorber 8 and the three-dimensional gathers 3BL and 3BR can be prevented from being separated from the skin surface.

Further, in the diaper 1, the non-adhesive region 13 is provided in the region where the linear rubber 4F3 and the absorber 8 overlap, so that the shape of the absorber 8 can be prevented from being linked to the shape of the outer case. As a result, as will be described later, the absorber 8 can be brought into contact with the skin while maintaining the state of being deformed by the wire 15 and the state in which the side wing 14 (see fig. 4) stands up. Thus, the diaper 1 can immediately absorb urine excreted from the wearer, and can prevent urine excreted from the wearer from leaking out of the diaper 1.

In the present application, the state in which the sheets overlap is not limited to a state in which the overlapped sheets overlap each other in a state of being in contact with each other over the entire surface, but includes a concept in which a part of the sheets overlap each other. For example, a portion of the end piece 11F on one end side in the longitudinal direction of the back piece 6 overlaps with a portion of the cover piece 4 in a contact state. In the diaper 1, the cover sheet 4, the end sheets 11F, 11R, the inner cover sheet 5, and the side sheets 10L, 10R are stacked in addition to the back sheet 6 and the top sheet 9 sandwiching the absorber 8, and therefore, it can be said that a laminate in which these multiple sheets are stacked is provided.

Fig. 4 is a plan view for explaining the bonding pattern between the outer body and the absorber 8 of the diaper according to the embodiment. Fig. 4 schematically shows a state in which the diaper 1 according to the embodiment is developed and extended. In fig. 4, the top sheet 9 and the side sheets 10L and 10R are not shown. In fig. 4, the bonding portion 12 for bonding the outer body and the inner body (absorber 8) is illustrated by a hatched pattern. In practice, the adhesive portion 12 adheres the inner cover sheet 5 of the outer case and the back sheet 6 of the inner case.

Specifically, the adhesive portion 12 that adheres the inner cover sheet 5 and the back sheet 6 is configured to include a plurality of linear adhesive portions 12a that extend in the width direction of the diaper 1. These linear adhesive portions 12a are formed of a hot melt adhesive. The plurality of linear adhesive portions 12a are arranged apart from each other in the longitudinal direction.

The adhesive portion 12 includes a narrow portion 12B having a width smaller than the absorber 8 and wide portions 12F and 12R having a width wider than the narrow portion 12B. The wide portions 12F, 12R and the narrow portion 12B are constituted by a plurality of linear adhesive portions 12a, and are provided in this order from the front body region 1F side to the rear body region 1R side, the wide portion 12F, the narrow portion 12B and the wide portion 12R.

The narrow portion 12B is provided in the crotch region 1B, and adheres the portion at the center in the longitudinal direction of the absorber 8 to the inner cover sheet 5. The narrow portion 12B overlaps with the narrowest portion 88B of the absorbent core 8C and the widened portion 88C on the rear body region 1R side. The linear adhesive portions 12a constituting the narrow portion 12B extend in a range other than both end portions in the width direction of the absorber 8. More specifically, the linear adhesive portion 12a extends from the widthwise center of the absorber 8 toward the widthwise outer side, and does not reach the widthwise end of the absorber 8. That is, in the narrow portion 12B, the length of the linear adhesive portion 12a in the width direction is shorter than the width of the absorber 8 (more specifically, the width of the core wrap sheet 7). Therefore, the width of the narrow portion 12B is narrower than the absorber 8.

The wide portion 12F is provided in the front region 1F, and adheres the region of the absorber 8 on the front region 1F side to the inner cover sheet 5. The wide width portion 12F overlaps with the wide width portion 88A on the front body region 1F side of the absorbent core 8 c. The wide portion 12R is provided in the rear body region 1R, and adheres the region of the absorber 8 on the rear body region 1R side to the inner cover sheet 5. The wide width portion 12R overlaps with the wide width portion 88A on the rear body region 1R side of the absorbent core 8 c. The width of the linear adhesive portion 12a constituting the wide portions 12F, 12R is longer than the width of the linear adhesive portion 12a constituting the narrow portion 12B, and shorter than the width of the absorber 8 (more specifically, the width of the core wrap sheet 7). That is, the wide portions 12F, 12R are wider than the narrow portion 12B and narrower than the absorber 8. The width of the wide portions 12F, 12R may be equal to the width of the absorber 8.

The narrow portion 12B further includes a1 st width portion 12B1 overlapping the narrowest portion 88B of the absorbent core 8C, and a 2 nd width portion 12B2 overlapping the widened portion 88C on the rear body region 1R side. The 1 st width portion 12B1 and the 2 nd width portion 12B2 are adjacent in the longitudinal direction, and the 2 nd width portion 12B2 is narrower than the 1 st width portion 12B 1. Thus, a step in the width direction is formed between the 1 st width portion 12B1 and the 2 nd width portion 12B2. In the 1 st width portion 12B1, the length of the linear adhesive portion 12a in the width direction is larger than the width of the widened portion 88C of the absorbent core 8C and smaller than the width of the core wrap sheet 7. The linear adhesive portion 12a constituting the 2 nd width portion 12B2 extends between both widthwise end portions of the absorbent core 8c, and does not extend further outward in the width direction than the absorbent core 8 c. That is, in the 2 nd width portion 12B2, the length of the linear adhesive portion 12a in the width direction is equal to the width of the narrowest portion 88B of the absorbent core 8 c. In the 2 nd width portion 12B2, the widthwise end portion of the absorbent core 8c and the widthwise end portion of the adhesive portion 12 overlap.

The 1 st width portion 12B1 of the wide portion 12R and the narrow portion 12B are adjacent to each other in the longitudinal direction. Thus, a step in the width direction is formed between the wide portion 12R and the narrow portion 12B. On the other hand, the wide portion 12F and the narrow portion 12B are provided at intervals in the longitudinal direction so that the inner cover sheet 5 and the absorber 8 are not bonded to each other in the entire region of the overlapping region of the crotch region 1B where the linear rubber 4F3 and the absorber 8 overlap. That is, the linear adhesive portion 12a is not provided in the overlapping region. Thus, in the overlapping region of the crotch region 1B where the linear rubber 4F3 and the absorber 8 overlap, a non-adhesive region 13 is formed between both widthwise end portions of the absorber 8. The non-adhesive region 13 overlaps the widened portion 88C on the precursor region 1F side.

As shown in fig. 4, the wide portions 12R, 1 st and2 nd width portions 12B1, 12B2 having different widths are adjacent to each other in the longitudinal direction to form steps in the width direction, and the adhesive portion 12 is formed in a stepped shape. Thus, the adhesive portion 12 is formed so as to be narrower in width from the rear body region 1R side toward the longitudinal center side (the crotch region 1B side). Further, the diaper 1 may be formed in a stepped shape so that the adhesive portion 12 is narrowed from the front body region 1F side toward the longitudinal center side (the crotch region 1B side) without forming the non-adhesive region 13.

As shown in fig. 4, in the diaper 1, the width of the bonded portion 12 is narrower than the width of the absorber 8 in the narrow portion 12B, so that the absorber 8 and the outer body are not bonded to each other outside the narrow portion 12B in the width direction. In fact, the inner cover sheet 5 and the back sheet 6 are not bonded to each other on the outer side in the width direction of the narrow portion 12B. Thus, side wing portions 14L, 14R non-bonded to the outer body are formed at both widthwise end portions of the absorber 8. In fig. 4, the side wing portions 14L, 14R are illustrated by dot patterns. More specifically, the side wing portions 14L, 14R are formed by portions of the absorbent body 8 that include portions extending in the longitudinal direction from the widthwise ends of the narrow portions 12B of the adhesive portion 12 to the widthwise ends of the absorbent body 8, and that are not adhered to the outer body. The side wing 14L is provided at the left end of the absorber 8, and the side wing 14R is provided at the right end of the absorber 8. The side wing portions 14L, 14R extend longitudinally between the wide portions 12F, 12R. Hereinafter, the side wing portions 14L and 14R will be simply referred to as side wing portions 14 without distinction. A part of the side flap portion 14 overlaps the non-adhesive region 13. The side wing portions 14 formed on both sides in the width direction of the adhesive portion 12 are not adhered to the outer body, and therefore are more likely to stand up toward the skin surface side of the wearer than the portion adhered to the outer body. The width of the adhesive portion 12 is not limited to the above-described width, as long as the side wing portion 14 can be formed. For example, the adhesive portion 12 may be formed not in a stepped shape as shown in fig. 4, but in a width smaller than the absorber 8, so as not to change over the entire longitudinal area.

Here, the outer body (more specifically, the inner cover sheet 5) overlaps the side wing 14. In the region overlapping the side wing 14 in the outer body, the string rubbers 4F3, 4R3 extending in the width direction are provided in an elongated state. The string rubbers 4F3, 4R3 are provided so as to overlap with the longitudinal end portions of the wing portions 14. The thread rubber 4F3 overlaps with the front region 1F side end of the side wing 14, and the thread rubber 4R3 overlaps with the rear region 1R side end of the side wing 14. In the region of the outer body overlapping the side wing 14, the string rubbers 4F3, 4R3 extend from the widthwise outer end to the widthwise inner end of the side wing 14. That is, the string rubbers 4F3, 4R3 are provided so as to overlap the widthwise outer end portions and the widthwise inner end portions of the wing portions 14. The wire rubbers 4F3 and 4R3 extend to the region overlapping the adhesive portion 12. That is, the string rubbers 4F3, 4R3 extend so as to overlap with the region of the absorber 8 on the inner side in the width direction than the side wing 14. The wire rubber 4R3 is provided so as to overlap the step region formed between the narrow portion 12B and the wide portion 12R of the adhesive portion 12. In addition, the absorbent core 8c is not present in the region overlapping the linear rubbers 4F3, 4R3 in the side flap portion 14.

In this way, in the diaper 1, the string rubbers 4F3, 4R3 extending in the width direction are provided in the outer body in an elongated state so as to overlap the side flap portions 14. Accordingly, the side wing portions 14L, 14R are biased toward the skin surface side by contraction of the string rubbers 4F3, 4R3, so that the side wing portions 14L, 14R can be easily raised. In the diaper 1, the three-dimensional gathers 3BL and 3BR further stand up from the widthwise end portions of the side flap portions 14 toward the skin surface side in a state where the side flap portions 14 stand up toward the skin surface side and approach the skin surface of the wearer. As a result, the three-dimensional gathers 3BL and 3BR can be more reliably brought into contact with the skin of the wearer, and side leakage of the discharged material in the crotch region 1B can be suitably suppressed. In the embodiment, both of the string rubbers 4F3 and 4R3 are provided so as to overlap the side wing portion 14, but only one of the string rubbers 4F3 and 4R3 may be provided so as to overlap the side wing portion 14. The outer body may overlap at least a part of the side wing 14, and a stretchable member may be provided in the region overlapping the side wing 14. That is, at least a part of the region of the outer body where the stretchable member is provided may overlap with at least a part of the side wing 14. For example, in the present embodiment, the cover sheet 4 and the inner cover sheet 5 may not have portions on the crotch side of the region overlapping the linear rubbers 4F3 and 4R3, and may be separated at the center in the longitudinal direction.

Fig. 5 is a cross-sectional view schematically showing a cross-sectional structure in the case where the diaper 1 according to the embodiment is cut along the line AA in fig. 3B. In the present figure, the absorbent core 8c is surrounded by a water permeable core wrap sheet 7 having a width wider than the absorbent core 8 c. The core wrap sheet 7 is divided into an upper core wrap sheet 7f positioned on the skin side of the wearer when worn and a lower core wrap sheet 7b positioned on the non-skin side of the wearer when worn. The lower core wrap sheet 7b wraps the side surface of the absorbent core 8c to the skin surface side, and is folded over at the widthwise end portion of the absorbent core 8c to overlap the upper core wrap sheet 7f from the skin surface side. An adhesive portion 16A is formed between the folded portion of the lower core wrap sheet 7b and the upper core wrap sheet 7f by applying a hot melt adhesive so as to extend in the longitudinal direction. By this adhesive portion 16A, the upper core wrap sheet 7f and the lower core wrap sheet 7b are adhered to each other at the widthwise end portion on the skin surface side of the absorbent core 8 c.

The back sheet 6 is laminated on the non-skin surface side of the absorber 8. The back sheet 6 is wider than the absorber 8, and wraps the side surface of the absorber 8 to reach the skin surface side. The back sheet 6 is folded at the widthwise end portion of the absorber 8 so as to overlap the folded portion of the lower core wrap sheet 7b from the skin surface side. An adhesive portion 16B is formed between the folded portion of the back sheet 6 and the folded portion of the lower core wrap sheet 7B by applying a hot melt adhesive so as to extend in the longitudinal direction. By this adhesive portion 16B, the backsheet 6 and the core wrap sheet 7 (lower core wrap sheet 7B) are adhered to each other at the widthwise end portion on the skin surface side of the absorber 8.

The top sheet 9 is laminated on the skin surface side of the absorber 8 so as to be in contact with the skin surface of the wearer. That is, the top sheet 9 is laminated on the skin surface side of the back sheet 6 on the skin surface side of the absorber 8. The top sheet 9 is also wider than the absorber 8, and the side surface of the absorber 8 is wrapped around to the non-skin surface side. The top sheet 9 is folded over at the widthwise end portion of the absorber 8 so as to overlap the back sheet 6 from the non-skin surface side. Between the folded portions of the top sheet 9 and the back sheet 6, an adhesive portion 16C is formed by applying a hot melt adhesive so as to extend in the longitudinal direction. By this adhesive portion 16C, the top sheet 9 and the back sheet 6 are adhered to each other at the widthwise end portion on the skin surface side of the absorber 8.

The side sheets 10L and 10R are disposed outside the center of the diaper 1 in the width direction and are laminated on the skin surface side of the top sheet 9. The side sheets 10L and 10R wrap the side surfaces of the absorber 8 to the non-skin surface side, and are folded over at the widthwise end portions of the absorber 8 to overlap the backsheet 6 from the non-skin surface side. Between the folded-back portions of the side panels 10L, 10R and the back sheet 6, an adhesive portion 16D is formed by applying a hot melt adhesive so as to extend in the longitudinal direction. By this adhesive portion 16D, the side sheets 10L, 10R and the back sheet 6 are adhered to each other at the widthwise end portion on the non-skin surface side of the absorber 8.

The side sheets 10L and 10R are formed with three-dimensional gathers 3BL and 3BR which prevent side leakage of discharged liquid by standing up to the skin surface side at both widthwise end portions of the skin surface side of the absorbent body 8. Further, between the top sheet 9 and the side sheets 10L, 10R, a hot melt adhesive is applied so as to extend in the longitudinal direction of the diaper 1, whereby an adhesive portion 16E is formed. By this adhesive portion 16E, the top sheet 9 and the side sheets 10L, 10R are adhered to each other at the widthwise end portion on the skin surface side of the absorber 8. The adhesive portion 16E is formed of a water-impermeable hot-melt adhesive. The bonded portion 16E thereby suppresses the liquid from entering between the side sheets 10L and 10R and the top sheet 9, thereby suppressing the liquid from leaking from the widthwise end portions of the diaper 1. The adhesive portion 16E is formed from the front body region 1F to the rear body region 1R so as to extend in the longitudinal direction of the diaper 1. Thus, the diaper 1 can suppress side leakage from any position of the widthwise end portions. The side sheets 10L and 10R cover the widthwise ends of the top sheet 9 and the back sheet 6. Thus, even if the liquid is supposed to penetrate to the width-direction end side of the adhesive portion 16E, the diaper 1 can suppress side leakage.

The three-dimensional gathers 3BL and 3BR formed by the side sheets 10L and 10R are provided at both widthwise end portions of the absorbent body 8 (specifically, the top sheet 9) and are formed so as to extend in the longitudinal direction and stand up toward the skin surface side. The three-dimensional gathers 3BL and 3BR are raised toward the skin surface side with the fold lines 10L2 and 10R2 serving as base end portions, which are joining end portions with the top sheet 9. The base ends of the three-dimensional gathers 3BL, 3BR, that is, the fold lines 10L2, 10R2 are formed further inward in the width direction of the diaper 1 than the adhesive portion 16E along the side panels 10L, 10R and the widthwise inner ends of the adhesive portion 16E. As shown in fig. 5, the fold lines 10L2 and 10R2 (standing lines) are provided in the crotch region 1B at positions overlapping the side flap portions 14. Wing portion

The three-dimensional gathers 3BL and 3BR include base end side panels 3BL1 and 3BR1, turnups 3BL2 and 3BR2 (an example of a "folded portion" in the present disclosure), free end side panels 3BL3 and 3BR3, and free end portions 3BL4 and 3BR4. The base end side panels 3BL1, 3BR1 extend inward in the width direction of the diaper 1 from the fold-over lines 10L2, 10R2 in a state folded toward the skin surface side as shown in fig. 5. The folded portions 3BL2, 3BR2 are formed to extend in the longitudinal direction on the side edges on the inner side in the width direction of the base end portion side panels 3BL1, 3BR1, and are folded from the base end portion side panels 3BL1, 3BR1 toward the skin surface side and toward the outer side in the width direction. The free end side panels 3BL3, 3BR3 are folded outward in the width direction of the diaper 1 and extend outward in the width direction from the folded-over portions 3BL2, 3BR 2. The free end portions 3BL4, 3BR4 are provided at the tip ends of the free end portion side pieces 3BL3, 3BR 3. That is, the three-dimensional gathers 3BL, 3BR are configured such that the free end side panels 3BL3, 3BR3 are folded out from the inner side edges of the base end side panels 3BL1, 3BR1 facing inward. The three-dimensional gathers 3BL, 3BR are in contact with the skin of the wearer from the turnups 3BL2, 3BR2 to the free ends 3BL4, 3BR4.

The side sheets 10L, 10R are provided with a plurality of thread rubbers 10L1, 10R1. The plurality of string rubbers 10L1, 10R1 are bonded to the side sheets 10L, 10R in an elongated state and extend in the longitudinal direction of the diaper 1. The plurality of thread rubbers 10L1, 10R1 are arranged with a space therebetween in the width direction of the diaper 1. The side sheets 10L, 10R are raised toward the skin surface side with the turndown lines 10L2, 10R2 as a boundary by the contraction force of the string rubbers 10L1, 10R1, thereby forming the three-dimensional gathers 3BL, 3BR. The fold lines 10L2, 10R2 are standing lines when the three-dimensional gathers 3BL, 3BR stand. The base end side panels 3BL1, 3BR1, the turnups 3BL2, 3BR2, the free end side panels 3BL3, 3BR3, the free ends 3BL4, 3BR4, and the thread rubbers 10L1, 10R1 of the side panels 10L, 10R constitute three-dimensional gathers 3BL, 3BR. In the diaper 1 according to the present embodiment, 1 piece of linear rubber 10L1, 10R1 is disposed on the side edges on the inner side in the width direction of the base end side panels 3BL1, 3BR1 (that is, the turnups 3BL2, 3BR 2), and 2 pieces of linear rubber 10L1, 10R1 are disposed on the free end side panels 3BL3, 3BR 3. Hereinafter, as shown in fig. 5, the string rubbers 10L1, 10R1 provided on the widthwise inner side of the base end side panels 3BL1, 3BR1 are referred to as string rubbers 10L1A, 10R1A, and the string rubbers 10L1, 10R1 provided on the free end side panels 3BL3, 3BR3 are referred to as string rubbers 10L1B, 10R1B. The string rubbers 10L1A, 10R1A are an example of the "1 st expansion member" of the present disclosure. The string rubbers 10L1B, 10R1B are an example of the "2 nd expansion member" of the present disclosure. The string rubbers 10L1B, 10R1B are disposed so as to overlap with the area where the widthwise end portion of the absorber 8 and the outer cover are not bonded.

As shown in fig. 5, in the diaper 1 according to the embodiment, in the region of the inner body on the outer side in the width direction than the adhesive portion 12, the number of sheets and the number of adhesive sites which overlap each other on the end side in the width direction than on the center side in the width direction are increased. Specifically, on the width-direction end side, the back sheet 6, the lower core wrap sheet 7B, the top sheet 9, and the side sheets 10L, 10R are folded and overlapped, and the adhesive portions 16A, 16B, 16C, 16D, 16E are provided. On the other hand, the folded portion and the adhesive portion of the sheet are small on the widthwise center side. Thus, as shown in fig. 5, the wing portion 14 is formed with a high-rigidity region 14A and a low-rigidity region 14B having a lower rigidity than the high-rigidity region 14A. As shown in fig. 4, the high rigidity region 14A includes a region overlapping the linear rubbers 4F3, 4R3 in the side flap portion 14, and extends in the longitudinal direction of the diaper 1, and the low rigidity region 14B is disposed on the inner side in the width direction than the high rigidity region 14A.

Fig. 6 is a cross-sectional view schematically showing a cross-sectional structure in the case where the diaper 1 according to the embodiment is cut along the line BB in fig. 4. In fig. 6, a cross section of the diaper 1 in the end region in the longitudinal direction of the absorber 8 is illustrated. The longitudinal end region of the absorber 8 is a region including the longitudinal end of the absorber 8 and extending in the longitudinal direction. In the present embodiment, the end regions are regions corresponding to the front region 1F and regions corresponding to the rear region 1R, in which the absorber 8 is bonded to the outer case via the wide portions 12F and 12R. However, the end regions of the present disclosure are not limited thereto. As shown in an enlarged A1 view of fig. 4 and fig. 6, in the end region of the absorber 8 on the front body region 1F side in the longitudinal direction, there is no adhesive portion 12 at both ends in the width direction of the absorber 8, and both ends in the width direction of the absorber 8 are not adhered to the outer body. The same applies to both widthwise end portions of the absorber 8 on the rear body region 1R side. That is, in the diaper 1, the widthwise end portion of the absorber 8 and the outer body are not bonded in the end region in the longitudinal direction of the absorber 8. In practice, the back sheet 6 of the inner body and the inner cover sheet 5 of the outer body are not bonded. In this way, the absorber 8 can be folded toward the skin surface side with respect to the outer body at the end portions in the width direction in the end portion region in the longitudinal direction. Therefore, in the end region in the longitudinal direction of the absorber 8, the widthwise end portion is easily raised toward the skin surface side.

As shown in fig. 4 and 6, the longitudinal ends of the absorber 8 are covered with end pieces 11F and 11R from the skin surface side. This prevents the material constituting the absorber 8 (inner body), for example, the absorbent material such as SAP not fixed to the sheet, from falling off from the longitudinal end portions of the absorber 8. As shown in fig. 6, the end sheet 11F is disposed closer to the skin surface side than the laminate (i.e., the inner body) formed of the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L, 10R, and is laminated on the inner cover sheet 5 across the longitudinal end of the laminate. Adhesive portions 16F are formed by applying a hot melt adhesive in the width direction between the end sheet 11F and the top sheet 9, the side sheets 10L, 10R, and the inner cover sheet 5. The end sheet 11F, the top sheet 9, the side sheets 10L, 10R, and the inner cover sheet 5 are bonded to each other by the bonding portion 16F. Note that the bonding method of the end piece 11R is the same as that of the end piece 11F, and therefore, the description thereof is omitted. At this time, as shown in fig. 4 and 6, in the region where the end pieces 11F, 11R overlap the absorber 8, there is no adhesive portion 12 at both ends in the width direction of the absorber 8, and both ends in the width direction of the absorber 8 are not adhered to the outer case.

Fig. 7 is a plan view showing the diaper 1 according to the present embodiment, in which the absorber 8, the top sheet 9, and the side sheets 10L and 10R are drawn out. In fig. 7, the adhesive portion 12 is illustrated by a hatched pattern. In fig. 7, a state in which the convex portion indicated by reference numeral 17 is formed is illustrated. Fig. 8 is a cross-sectional view of a section including the top sheet 9 and the side sheet 10L when cut along the line CC in fig. 7. As shown in fig. 7, the three-dimensional gathers 3BL and 3BR are provided at the widthwise end portions of the absorbent body 8, and extend between the lengthwise end portions of the absorbent body 8. Hereinafter, the base end fixing portion and the free end fixing portion provided at the longitudinal end portions of the three-dimensional gathers 3BL and 3BR will be described with reference to fig. 8 while referring to fig. 7. The base end fixing portion and the free end fixing portion of the side sheet 10L will be described hereinafter, but the base end fixing portion and the free end fixing portion of the side sheet 10R are the same, and therefore, the description thereof will be omitted.

The diaper 1 includes, at the longitudinal end portions, a base end bonding portion 31 (an example of a "base end fixing portion" in the present disclosure) for bonding the base end portion side sheet 3BL1 and the top sheet 9, and a free end bonding portion 32 (an example of a "free end fixing portion" in the present disclosure) for bonding the free end portion side sheet 3BL3 and the base end portion side sheet 3BL 1. The base end bonding portion 31 and the free end bonding portion 32 are formed by heat sealing (heat welding). However, the form of the base end bonding portion 31 and the free end bonding portion 32 is not limited thereto, and may be formed by applying a hot melt adhesive.

The base end portion side sheet 3BL1 is fixed to the top sheet 9 by the base end adhesive portion 31 at each end portion in the longitudinal direction of the diaper 1 so as to stand up to the skin surface side other than the end portion in the longitudinal direction. The base end bonding portion 31 bonds the lateral side of the base end portion side sheet 3BL1 on the inner side in the width direction to the top sheet 9. The base end portion side sheet 3BL1 is fixed to the top sheet 9 in the longitudinal direction in a range where the base end bonding portion 31 is formed. The base end adhesive portion 31 fixes both ends of the base end side sheet 3BL1 in the longitudinal direction to the top sheet 9, and the three-dimensional gather 3BL can be raised toward the skin surface side by the contraction force of the string rubber 10L 1. The three-dimensional gather 3BL stands up toward the skin surface side with the fold-over line 10L2 shown in fig. 6 as a boundary in the region where the base end adhesive portion 31 is not formed. The base end bonding portion 31 is provided at the longitudinal end of the bonding portion 16E. The base end bonding portion 31 is formed wider than the bonding portion 16E on the center side (crotch side) in the longitudinal direction of the base end bonding portion 31.

The free end side sheet 3BL3 is fixed to the base end side sheet 3BL1 by the free end adhesive portion 32 at each end portion in the longitudinal direction of the diaper 1 so as to stand on the skin surface side other than the end portion in the longitudinal direction.

Here, the range where the base end bonding portion 31 is not formed in the longitudinal direction of the diaper 1, that is, the extending direction of the three-dimensional gathers 3BL, 3BR is set as the non-fixed range R1. The non-fixed range R1 is, in other words, a range in the longitudinal direction between the base end bonding portion 31 fixing one end portion in the longitudinal direction of the base end portion side sheet 3BL1 and the base end bonding portion 31 fixing the other end portion, and is a range in the longitudinal direction in which a portion other than the portion fixed by the base end bonding portion 31 of the base end portion side sheets 3BL1, 3BR1 extends. At this time, as shown in fig. 7, in the diaper 1 according to the present embodiment, in the non-fixed range R1, the adhesive portion 12 is not present at both widthwise end portions of the absorber 8, and the widthwise end portions of the absorber 8 and the outer body are not adhered.

The range in which the base end bonding portion 31 is formed in the longitudinal direction of the diaper 1 is set to be a fixed range R2. The fixing range R2 is, in other words, a range in the longitudinal direction in which the base end adhesive portion 31 extends, and is a range in the longitudinal direction in which a portion of the base end portion side panels 3BL1, 3BR1 fixed by the base end adhesive portion 31 extends. At this time, as shown in fig. 7, in the diaper 1 according to the present embodiment, the adhesive portions 12 are not present at both widthwise ends of the absorber 8 in the fixed range R2, and the widthwise ends of the absorber 8 and the outer covering are not adhered.

As shown in fig. 7, the end portion on the crotch side (longitudinal center side) of the free end bonding portion 32 is located on the crotch side from the end portion on the crotch side of the base end bonding portion 31 in the longitudinal direction. In other words, the free end bonding portion 32 extends toward the longitudinal center side from the base end bonding portion 31. Thus, the free end bonding portion 32 also exists in the non-fixed range R1 where the base end bonding portion 31 is not formed. The contraction force of the wire rubbers 10L1B, 10R1B provided in the free end side panels 3BL3, 3BR3 acts on the base end side panels 3BL1, 3BR1 via the free end bonding portion 32. At this time, the free end adhesive portion 32 exists in the non-fixed range R1 where the base end portion side sheet 3BL1 is not fixed to the top sheet 9. Therefore, the fixed portions of the base end side panels 3BL1, 3BR1 in the non-fixed range R1, which are fixed to the free end side panels 3BL3, 3BR3, are pulled by the free end side panel 3BL3 by the action of the contraction force of the wire rubbers 10L1B, 10R1B, and float from the top sheet 9. The three-dimensional gathers 3BL, 3BR are easily erected by the base end portion side panels 3BL1, 3BR1 floating up at both ends in the longitudinal direction of the non-fixed range R1.

As described above, the outer body is provided with the string rubber 4F3 (an example of the "3 rd stretchable member" of the present disclosure) extending along one of the lower limb openings, across the crotch region 1B, and along the other of the lower limb openings in an extended state on the abdomen side of the wearer. Therefore, when the outer body is pulled in the widthwise outer direction by inserting the legs of the wearer into the left and right leg openings 2L, 2R provided in the outer body during wearing of the diaper 1, the string rubber 4F3 is also pulled in the widthwise outer direction. In this way, in the region where the linear rubber 4F3 extends in the width direction and crosses the crotch region 1B, the outer body is lifted up toward the skin surface side and the trunk opening 2T side, but in this region, a non-adhesive region 13 where the absorber 8 and the outer body are not adhered is provided. The absorbent body 8 and the outer body are bonded by the bonding portion 12 before and after the non-bonding region 13 in the longitudinal direction. Therefore, the portion of the absorber 8 bonded to the outer body at the crotch side of the unbonded area 13 is pulled by the outer body and lifted up toward the trunk opening 2T, but the portion of the unbonded area 13 not bonded to the outer body is not pulled by the outer body. In this way, in the wearing state of the diaper 1, the absorber 8 is contracted (folded) in the longitudinal direction in the non-adhesive region 13 that is not adhered to the outer body, and the convex portion 17 that protrudes toward the skin surface side is formed in the crotch region 1B. As described above, the non-adhesive region 13 is provided so as to include the region corresponding to the entrance of the urinary tract and the region corresponding to the groin. Thus, the convex portion 17 is formed in the vicinity of the urethral orifice corresponding region in the groin corresponding region. In the wearing state, the absorber 8 is biased from the non-skin surface side by the contraction force of the string rubber 4F3, so that the protruding portion 17 is formed and the state in which the protruding portion 17 is formed is maintained. The convex portion 17 is formed by bending the absorber 8 so as to be convex toward the skin surface side, and extends in the width direction across the width direction both end portions of the absorber 8. Thus, the convex portions 17 overlap the inner side edges (the turnups 3BL2, 3BR 2) of the base end portion side sheets 3BL1, 3BR1 of the three-dimensional gathers 3BL, 3BR from the non-skin surface side. Fig. 9 is a cross-sectional view of the absorber 8 in the case of cutting with the DD line in fig. 7. In fig. 9, the absorber 8 is simplified and illustrated. As shown in fig. 9, the convex portion 17 is formed by bending the absorber 8 at the 1 st bending portion 17A, the 2 nd bending portion 17B, and the 3 rd bending portion 17C. The folded portions 17A, 17B, 17C are formed as creases extending in the width direction of the diaper 1. The 1 st bent portion 17A, the 2 nd bent portion 17B, and the 3 rd bent portion 17C are provided in this order from the trunk opening 2T side toward the crotch side. The absorbent body 8 is folded from the trunk opening 2T side toward the skin surface side with the 1 st folded portion 17A as a boundary, folded toward the non-skin surface side with the 2 nd folded portion 17B as a boundary, and folded toward the crotch side with the 3 rd folded portion 17C as a boundary, thereby forming the convex portion 17.

As described above, the convex portion 17 is formed in the vicinity of the urethral orifice correspondence region in the groin correspondence region. Thus, the urethral orifice of the wearer can be covered with the absorber 8 by the convex portion 17, and the area of the absorber 8 that receives the discharged urine can be increased. As a result, urine excreted from the wearer can be appropriately prevented from leaking out of the diaper 1. The size of the convex portion 17 is not particularly limited, but as shown in fig. 9, the height a1 of the convex portion 17 from the base end portion (root portion) to the tip portion (2 nd bent portion 17B) in the state where the convex portion 17 stands up (stands up) is preferably 10mm or more, for example.

Here, the range in which the convex portion 17 is formed in the longitudinal direction of the diaper 1 is referred to as a convex range R3. As shown in fig. 7, the absorbent core 8C has the convex portion 17 formed by a portion (specifically, a widened portion 88C) narrowed in the width direction. That is, in the convex range R3, the absorbent core 8c is narrowed in the width direction. In this way, in the convex range R3, the fold lines 10L2, 10R2, which are joining end portions of the base end portion side sheets 3BL1, 3BR1 of the three-dimensional gathers 3BL, 3BR and the top sheet 9, are located on the outer side in the width direction than the absorbent core 8 c. As shown in fig. 7, the three-dimensional gathers 3BL, 3BR are formed in a rectangular shape when viewed in the thickness direction. Therefore, if the fold lines 10L2, 10R2 (standing lines) are located at positions overlapping the absorbent core 8c in the convex region R3, when the three-dimensional gathers 3BL, 3BR stand up in a state where the convex portions 17 are formed, the positions of the standing lines of the three-dimensional gathers 3BL, 3BR become high in the convex region R3 where the absorbent body 8 bulges. Thus, a difference in height of the three-dimensional gathers 3BL, 3BR occurs between the convex range R3 and the front-rear range of the convex range R3. In this way, the three-dimensional gathers 3BL and 3BR strongly contact the skin in the convex range R3, and the three-dimensional gathers 3BL and 3BR may easily separate from the skin at the front and rear positions of the convex range R3. In contrast, in the diaper 1 according to the present embodiment, in the convex region R3, the fold lines 10L2, 10R2 (standing lines) are provided at positions where the absorbent core 8c is absent and the rigidity of the absorbent body 8 is low. Therefore, the fold lines 10L2, 10R2 can collapse toward the non-skin surface side, and the occurrence of the height difference of the three-dimensional gathers 3BL, 3BR between the convex range R3 and the front-rear range thereof is suppressed. This can prevent the three-dimensional gathers 3BL and 3BR from leaving the skin, and can suitably prevent side leakage of the discharged material.

Further, the elongation of the wire rubbers 10L1, 10R1 disposed on the outer side in the width direction of the diaper 1 out of the plurality of wire rubbers 10L1, 10R1 is lower than the elongation of the wire rubbers 10L1, 10R1 disposed on the inner side in the width direction of the diaper 1. The elongation herein means a draft ratio. The draft ratio (%) of the wire rubber is a value obtained by dividing the length (cut length) of the wire rubber in the case of incorporating the wire rubber into a diaper by the natural length of the wire rubber and expressing the result as a percentage. The string rubbers 10L1, 10R1 are incorporated into the diaper 1 in an extended state so as to exert a contraction force. Thus, the draft ratio is set to a value greater than 100%. The diaper 1 according to the present embodiment is configured such that the elongation of the wire rubbers 10L1 and 10R1 disposed on the outer side in the width direction is lower than the elongation of the wire rubbers 10L1 and 10R1 disposed on the inner side in the width direction. This makes it possible to shrink the inner region more than the outer region in the side sheets 10L, 10R, and to suppress the outer region from falling inward in the width direction than the inner region, that is, the free end portions 3BL4, 3BR4 of the three-dimensional gathers 3BL, 3BR from falling toward the top sheet 9 side.

Fig. 10 is a plan view showing the diaper 1 with the absorber 8 and a part of the string rubbers 4F3, 4R3 drawn out. In fig. 10, the non-adhesive region 13 is illustrated by a hatching pattern. The line 15 formed in the absorber 8 will be described with reference to fig. 10. The absorber 8 is extruded in a linear shape, indicated by a line 15 in fig. 10. As shown in fig. 10, the line 15 extends in the width direction at the end portion on the rear body region 1R side, and is bent outward in the width direction at the end portion on the front body region 1F side. The wire 15 has 5 grooves formed by pressing the absorber 8. The 5 grooves are constituted by grooves 15AL, 15AR, grooves 15BL, 15BR, and groove 15C. The wire 15 is formed of a compressed groove, and therefore has higher rigidity than other portions of the absorber 8. Such pressing of the absorber 8 is achieved by embossing by a roll, for example. The thread 15 may be formed by pressing only the absorbent core 8c, or may be formed by pressing the absorbent body 8 including the core wrap sheet 7. In the present embodiment, the thread 15 is formed by pressing the core wrap sheet 7 and the absorbent core 8c from the skin surface side.

As shown in fig. 10, the grooves 15AL and 15AR are a pair of left and right grooves extending from the crotch region 1B toward the front body region 1F side end in the region corresponding to the groin of the wearer from the widthwise center of the diaper 1 toward the outside. The absorber 8 is formed with grooves 15AL and 15AR so as to be bendable along the groin of the wearer. The grooves 15BL and 15BR are a pair of left and right grooves extending in the longitudinal direction in the region corresponding to the urethral orifice of the wearer. The absorber 8 is provided with the grooves 15BL and 15BR, whereby the absorber 8 between the grooves can be raised toward the urethral orifice side.

As shown in fig. 10, the non-adhesive region 13 where the absorber 8 and the inner cover sheet 5 are not adhered to each other is provided so as to overlap with the end portions of the grooves 15AL, 15AR and the grooves 15BL, 15BR on the precursor region 1F side. If the non-adhesive region 13 is formed so as not to include the region overlapping the grooves 15AL, 15AR and the grooves 15BL, 15BR, and the absorber 8 and the outer cover (inner cover sheet 5) are adhered to each other in this region, the outer cover is brought into contact with the skin by the contraction force of the wire rubber 4F 3. As a result, the state of the outer body is transmitted to the absorber 8, and a force approaching the absorber 8 in a flat state is applied. In contrast, in the diaper 1, the region overlapping the grooves 15AL, 15AR and the grooves 15BL, 15BR is included in the non-adhesive region 13, so that the absorber 8 can be abutted against the skin surface side while maintaining a state in which the absorber 8 is bent along the groin of the wearer by the grooves 15AL, 15AR and a state in which the absorber bulges toward the urethral orifice side between the grooves 15BL, 15 BR. This improves the close contact between the absorbent body 8 and the skin of the wearer in the diaper 1.

The wire rubber 4F3 is disposed so as to include a region overlapping with the end portions of the grooves 15AL, 15AR and the grooves 15BL, 15BR on the precursor region 1F side when viewed in plan. The non-adhesive region 13 is provided in the region where the linear rubber 4F3 and the absorber 8 overlap. With this configuration, the effect of the absorber 8 coming into contact with the skin surface side of the wearer in a state of being bent along the groin of the wearer by the grooves 15AL, 15AR and a state of being raised toward the urethral orifice side between the grooves 15BL, 15BR is improved. This is because the absorber 8 is not deformed in association with the shape of the outer body, but the absorber 8 having a shape that bulges toward the skin surface side through the grooves 15AL, 15AR and the grooves 15BL, 15BR can be brought into contact with the skin. Thus, the diaper 1 can bring the absorber 8 into contact with the urethral opening, and thus can improve the adhesion of the absorber 8 to the skin of the wearer.

As shown in fig. 10, the groove 15C is a groove that is disposed closer to the rear body region 1R than the grooves 15BL, 15BR and extends in the width direction. The groove 15C is a pressing groove, and therefore becomes a high-rigidity portion as compared with the outside of the groove forming region. As described above, in the diaper 1, the grooves 15BL and 15BR are formed, so that the absorber 8 is narrowed in the right-left direction by the legs of the wearer in the wearing state, and the absorber 8 is folded so as to protrude toward the skin surface side with the grooves 15BL and 15BR as the starting point, thereby improving the adhesion to the urethral meatus. However, if the portion of the absorber 8 protruding toward the skin surface side from the grooves 15BL, 15BR extends to the anus of the wearer, the absorber 8 protrudes toward the anus. In this case, the absorber 8 may enter the cleft (slit) of the buttocks, and may give the wearer a sense of incongruity. In contrast, in the diaper 1, by forming the groove 15C in the absorber 8, it is possible to prevent the absorber 8 from protruding toward the skin surface side in the region of the diaper 1 corresponding to the anus. In addition, reference numeral 30 in fig. 10 denotes an area where the anus of the wearer is located (anus corresponding area) in the wearing state of the diaper 1.

Fig. 11 is a cross-sectional view of the diaper 1 taken along line EE in fig. 7, schematically showing a state in which the widthwise end portions of the longitudinal end regions of the absorber 8 are raised. In fig. 11, the structure of the absorber 8 is schematically illustrated. As described above, the diaper 1 according to the present embodiment includes the absorber 8 provided at a position including the crotch region 1B and capable of absorbing the discharged liquid of the wearer, the outer cover disposed on the non-skin surface side of the wearer with respect to the absorber 8, and the adhesive portion 12 for adhering the absorber 8 and the outer cover. In the diaper 1, the widthwise end portion of the absorber 8 and the outer case are not bonded to each other in the end region in the longitudinal direction of the absorber 8. As a result, as shown in fig. 11, the widthwise end portion of the longitudinal end region of the absorber 8 can be folded away from the outer body and raised toward the skin surface side. The longitudinal end regions of the absorber 8 are regions corresponding to the abdomen side and the back side of the wearer. Thus, the diaper 1 can form a space between the diaper 1 and the skin surface on the abdomen side and the back side of the wearer by standing the widthwise end portions of the absorber 8 in the lengthwise end regions of the absorber 8. Specifically, a space is formed between the skin surface of the wearer and the region on the widthwise center side of the top sheet 9 (the region where the absorber 8 is bonded to the outer body by the bonding portion 12). Here, the skin surface on the abdomen side and the back side of the wearer is flatter than the skin surface on the crotch side. Since the longitudinal end regions of the absorber 8 are also flat, if the space is not present, the discharged material may move along the skin surface and leak out of the absorbent article when the discharged material intrudes into the abdomen side and the back side. In contrast, the diaper 1 has a space between the diaper 1 and the skin surface on the abdomen side and the back side of the wearer by standing the widthwise end portion on the skin surface side in the lengthwise end region of the absorber 8, and can accommodate discharged matter in the space. As a result, according to the diaper 1 of the present embodiment, side leakage of discharged matter on the abdomen side and the back side of the wearer can be suppressed.

The diaper 1 according to the present embodiment includes three-dimensional gathers 3BL and 3BR. The three-dimensional gathers 3BL and 3BR are provided at the widthwise end portions of the absorbent body 8, extend in the longitudinal direction, and are formed so as to stand up toward the skin surface side. As a result, as shown in fig. 11, in the end region in the longitudinal direction of the absorber 8, the three-dimensional gathers 3BL, 3BR further stand up from the widthwise end of the absorber 8 to the skin surface side in a state where the widthwise end of the absorber 8 stands up to the skin surface side and approaches the skin surface of the wearer. As a result, the three-dimensional gathers 3BL and 3BR can be brought into contact with the skin of the wearer even on the abdomen side and the back side, and side leakage of discharged material can be more suitably suppressed.

The three-dimensional gathers 3BL and 3BR according to the present embodiment are joined to the top sheet 9 and stand up from the fold lines 10L2 and 10R2, which are joining ends with the top sheet 9, toward the skin surface side. The three-dimensional gathers 3BL, 3BR include base end side panels 3BL1, 3BR1 extending inward in the width direction from the joined end portions with the top sheet 9, and base end adhesive portions 31 for fixing both longitudinal end portions of the base end side panels 3BL1, 3BR1 to the top sheet 9, respectively. The base end side panels 3BL1, 3BR1 are provided with wire rubbers 10L1A, 10R1A extending in the longitudinal direction in an elongated state. In the diaper 1 according to the present embodiment, the widthwise end portion of the absorber 8 and the outer body are not bonded to each other in the longitudinal direction range (non-fixed range R1) extending from the portion other than the portion fixed by the base end bonding portion 31 in the base end portion side panels 3BL1, 3BR 1. That is, the three-dimensional gathers 3BL, 3BR have base end side panels 3BL1, 3BR1 facing the widthwise inner side, and widthwise end portions of the absorbent body 8 can be raised toward the skin surface side in the non-fixed range R1 in which the base end side panels 3BL1, 3BR1 can be raised. As a result, the base end side sheets 3BL1, 3BR1 are raised toward the skin surface side while facing the inner side in the width direction by the tension of the wire rubber 10L1A, and as shown in fig. 11, a space can be formed between the raised widthwise end portion of the absorber 8 and the raised base end side sheets 3BL1, 3BR 1. Thus, even when the discharged material that has entered the abdomen side and the back side reaches the widthwise end of the absorber 8, the discharged material that entered the space cannot pass over the base end side panels 3BL1, 3BR1, and side leakage of the discharged material can be suppressed.

In the diaper 1 according to the present embodiment, the widthwise end portion of the absorber 8 and the outer cover are not bonded to each other in the range (the fixed range R2) in the longitudinal direction in which the base end bonding portion 31 is formed. Accordingly, the widthwise end portions of the absorber 8 can be raised even in the fixed range R2 located on the lengthwise end portions side of the base end portion side panels 3BL1, 3BR1, and therefore, the widthwise end portions of the absorber 8 can be raised more reliably in the non-fixed range R1 located on the crotch side than the fixed range R2. As a result, the side leakage of the discharged matter can be more suitably suppressed.

The three-dimensional gathers 3BL and 3BR according to the present embodiment have folded portions 3BL2 and 3BR2, free end side panels 3BL3 and 3BR3, free end adhesive portions 32, and free end portions 3BL4 and 3BR4. The folded portions 3BL2, 3BR2 are formed on the widthwise inner side edges of the base end portion side panels 3BL1, 3BR1, and are folded from the base end portion side panels 3BL1, 3BR1 toward the skin surface side and widthwise outer side. The free end side panels 3BL3, 3BR3 extend outward in the width direction from the turnups 3BL2, 3BR 2. The free end adhesive portion 32 fixes both longitudinal end portions of the free end portion side panels 3BL3, 3BR3 to the base end portion side panels 3BL1, 3BR1, respectively. The free end portions 3BL4, 3BR4 are provided at the tip ends of the free end portion side pieces 3BL3, 3BR3. The free end side panels 3BL3, 3BR3 are provided with string rubbers 10L1B, 10R1B extending in the longitudinal direction in an elongated state so as to overlap with the non-bonded region between the widthwise end of the absorber 8 and the outer cover. That is, the three-dimensional gathers 3BL, 3BR have free end side panels 3BL3, 3BR3 facing the outer side in the width direction in addition to the base end side panels 3BL1, 3BR1 facing the inner side in the width direction. The free end side panels 3BL3, 3BR3 can be brought into contact with the skin of the wearer in a range from the turnups 3BL2, 3BR2 to the free ends 3BL4, 3BR4. Thus, the three-dimensional gathers 3BL, 3BR can be more reliably brought into contact with the skin than in the case where the free end side panels 3BL3, 3BR3 are not provided. In the diaper 1 according to the embodiment, the string rubbers 10L1B and 10R1B are provided in an elongated state so as to overlap with the widthwise end portions of the absorbent body 8 that can stand up toward the skin surface side. Thus, the contraction force of the wire rubbers 10L1B, 10R1B acts to pull the widthwise end portions of the absorber 8. As a result, the widthwise end portion of the absorber 8 can be more reliably raised, and side leakage of the discharged material can be more suitably suppressed. The three-dimensional gathers 3BL, 3BR may not have the free end side panels 3BL3, 3BR3.

In the diaper 1 according to the embodiment, the absorber 8 is bent so as to be convex toward the skin surface side, and the convex portion 17 extending in the width direction is formed so as to overlap the side edge on the inner side in the width direction of the base end portion side sheet 3BL1, 3BR1 from the non-skin surface side. In the longitudinal range (convex range R3) in which the convex portions 17 are formed, the joined end portions of the base end portion side sheets 3BL1, 3BR1 and the top sheet 9 are located on the outer side in the width direction than the absorbent core 8c of the absorbent body 8. In this way, in the convex range R3, the fold lines 10L2, 10R2 (standing lines) are provided at positions where the absorbent core 8c is absent and the rigidity of the absorbent body 8 is low. Therefore, the fold lines 10L2, 10R2 can collapse toward the non-skin surface side, and the occurrence of the height difference of the three-dimensional gathers 3BL, 3BR between the convex range R3 and the front-rear range thereof is suppressed. Further, since the convex portions 17 are formed so as to overlap with the widthwise inner side edges of the base end portion side panels 3BL1, 3BR1, the widthwise inner side edges of the base end portion side panels 3BL1, 3BR1 can be lifted up toward the skin surface side by the convex portions 17. This can prevent the three-dimensional gathers 3BL and 3BR from leaving the skin, and can suitably prevent side leakage of the discharged material.

The diaper 1 according to the present embodiment includes the water impermeable end pieces 11F and 11R covering the longitudinal end portions of the absorber 8 from the skin surface side. In the region where the end pieces 11F, 11R overlap the absorber 8, the widthwise end portions of the absorber 8 and the outer covering are not bonded. Thus, the widthwise end portions of the absorber 8 can be lifted from the outer package even in the region overlapping with the end pieces 11F, 11R. Thus, the end pieces 11F and 11R can prevent the material constituting the absorber 8 from falling off from the longitudinal end portions of the absorber 8, and can raise the width end portions of the absorber 8.

Fig. 12A, 12B, and 12C are diagrams illustrating the convex portions in more detail. Fig. 12A, 12B, and 12C schematically show longitudinal cross sections of the absorber 8 of the diaper 1 in a worn state. In the present figure, the flow direction of the discharged liquid U generated from the sitting wearer is shown by a broken-line arrow. Fig. 12A is a diagram of an absorber of a known diaper in a state where no convex portion 17 is formed. When the wearer sits down, a load due to the weight of the wearer is applied to the crotch region of the diaper. In the present figure, the load application portion is shown as a load portion W. In the vicinity of the load site W there is a urethral orifice of the wearer. When the discharged liquid U is generated from the wearer, the discharged liquid U spreads toward the vicinity of the load portion W and reaches the absorbent body. However, since the load is applied to the absorber, the absorber cannot absorb the discharged liquid and swells, and unabsorbed discharged liquid may remain between the absorber and the skin surface of the wearer, and the wearing sensation may be lowered. If the discharged liquid contacts the skin surface for a long period of time, skin surface problems such as rash are also likely to occur. In addition, at the load portion W, the three-dimensional gathers often collapse due to the load. Therefore, unabsorbed discharged liquid may overflow from the three-dimensional gathers to cause side leakage.

Fig. 12B is a view showing the absorber 8 of the diaper 1 according to the present embodiment. In the diaper 1 according to the present embodiment, a non-bonded region 13 is provided between the absorber 8 and the outer case, and the rigidity of the absorber 8 is relatively low in the non-bonded region 13. The absorbent body 8 is biased inward in the longitudinal direction by the three-dimensional gathers 3BL and 3BR when worn. Thus, in the non-adhesive region 13, the absorber 8 is bent toward the skin surface side to form the convex portion 17. The portion where the convex portion 17 is formed corresponds to the lower abdomen of the wearer, and is a position where it is easy to contact with the discharged liquid U.

The diaper 1 according to the present embodiment can make the contact area between the absorber 8 and the discharged liquid U wider even when the load is applied to the absorber 8 by assuming that the wearer is sitting. Therefore, even when a load is applied to the absorber 8, the diaper 1 can disperse the discharged liquid and rapidly absorb the discharged liquid. Thus, the discharged liquid U does not come into contact with the skin surface of the wearer for a long period of time. Thus, the wearing feeling of the diaper 1 is improved, and the occurrence of problems on the skin surface due to the discharged liquid U is reduced.

In the non-bonded region 13, the absorber and the outer body are not bonded. Further, side wing portions 14L, 14R, to which the outer body is not bonded, are formed at the crotch side of the non-bonded region 13 at the widthwise end portions of the absorbent body 8. In the vicinity of the non-adhesive region 13, the rising ends of the three-dimensional gathers 3BL, 3BR overlap the side flaps 14L, 14R. In other words, the rising ends of the three-dimensional gathers 3BL, 3BR as leakage preventing walls are located further to the outside in the width direction than the widthwise ends of the absorbent core 8c at the convex portions 17. Thus, the three-dimensional gathers 3BL and 3BR become soft in the vicinity of the convex portions 17, rise toward the skin surface side following the formation of the convex portions 17, and prevent side leakage of discharged liquid.

When the absorbent body 8 is folded to form the convex portion 17, the side leakage of the discharged liquid is accurately prevented by the three-dimensional gathers 3BL, 3BR when the absorbent body 8 approaches the skin surface at the top of the convex portion 17. However, at the base of the convex portion 17, the absorber 8 is located on the non-skin surface side. Therefore, there is a possibility that the height of the standing portions of the three-dimensional gathers 3BL, 3BR is insufficient and a gap is generated between the standing portions and the skin surface. In the present embodiment, in the convex portion peripheral region, the three-dimensional gathers 3BL and 3BR have a configuration in which they stand up from the standing end toward the inner side in the width direction at the standing portion, are bent to the opposite side at the boundary with the skin contact portion, and stand up toward the outer side in the width direction at the skin contact portion. Even if the height of the rising portion is insufficient at the base of the convex portion 17, the skin contact portion is in contact with the skin surface of the wearer in the form of a surface, so that the occurrence of side leakage can be suppressed. In this way, the diaper 1 according to the present embodiment does not cause side leakage due to the formation of the convex portions 17 by bending the absorber 8 in the longitudinal direction.

Fig. 12C is a diagram showing a preferable configuration of the absorber 8 of the diaper 1 according to the present embodiment. In the present embodiment, the non-adhesive region 13 extends toward the front body region 1F and toward the rear body region 1R than the portion of the linear rubber 4F3 that traverses the crotch region 1B in the width direction. As shown in fig. 3B, the string rubber 4F3 has a component in the longitudinal direction of the diaper 1 on the outer side of the absorber 8 in the width direction of the diaper 1. Here, the longitudinal component is a component extending and contracting along the longitudinal direction of the diaper 1. Even if the wire rubber 4F3 extends obliquely to the longitudinal direction, the wire rubber 4F3 has a longitudinal component. In fig. 12C, the longitudinal component is shown by a broken line arrow P.

The non-adhesive region 13 is formed so as to include the front region 1F side of the extension region of the string rubber 4F3, and has a component that stretches and contracts in the longitudinal direction of the diaper 1 on the outer side in the width direction of the portion where the string rubber 4F3 crosses the absorber 8. Thus, the outer body in the non-adhesive region 13 is pulled toward the front body region 1F by the wire rubber 4F3, and the inner body including the absorber 8 is pulled toward the front body region 1F by the outer body. The diaper 1 having this structure is pulled up toward the front body region 1F by the absorber 8 on the skin surface side of the non-adhesive region 13, and separation of the absorber 8 from the skin surface of the wearer can be suppressed. When the non-adhesive region 13 is formed closer to the front body region 1F than the extension region of the string rubber 4F3, the string rubber 4F3 pulls the front body region 1F, and the inner body including the absorber 8 can also be pulled up toward the front body region 1F.

Further, according to the diaper 1 of the present embodiment, the absorber 8 is pressed against the skin surface of the wearer in the crossing portion of the linear rubber 4F3, and therefore the absorber 8 is more folded. Thus, the wire rubber 4F3 also has an effect of making the convex portion 17 larger and remarkable. By forming the large and distinct convex portion 17, the discharged liquid can be absorbed over a wider area. Further, since the protruding portion 17 itself is pulled up toward the front body region 1F by the influence of the longitudinal component generated from the wire rubber 4F3, the protruding portion 17 is formed so as to be separated from the load portion W toward the front body region 1F. By separating the convex portion 17 from the load portion W, the absorption capacity of the convex portion 17 can be maintained even when the wearer sits on the seat, and the discharged liquid U can be absorbed quickly. In this way, by providing the crossing portion of the wire rubber 4F3 so as to overlap with the non-adhesive region 13, the convex portion 17 is formed at a position apart from the load position W, and therefore the absorption capacity of the discharged liquid U can be improved.

When the diaper 1 is used in combination with an inner pad, the convex portion 17 functions as an anti-slip portion. The inner pad is abutted against the skin surface side by the convex portion 17 in the vicinity of the urethral orifice in addition to the string rubbers 4F2, 4R2, and thus urine leakage can be suppressed.

Here, a case where the wearer of the diaper 1 is female will be described. The design is as follows: when the diaper 1 is worn by a female, the urethral orifice is located approximately at the crossing portion of the string rubber 4F 3. Thus, the crossing portion of the thread rubber 4F3 includes an area corresponding to the urethral orifice of the female wearer. As described above, by pulling up the outer body on the non-adhesive region 13 and the inner body including the absorber 8 having the convex portions 17 formed thereon toward the front body region 1F side by the string rubber 4F3, it is easy to bring the absorber 8 close to the meatus of women and to allow urine discharged from the meatus to enter the absorber 8. The female urethral orifice becomes slightly on the crotch side of the convex portion 17. Thus, the discharged liquid flows downward from the base of the convex portion 17, and enters the bag-like space formed between the convex portion 17 of the absorber 8 and the flat portion of the absorber 8. When the absorber 8 is flat, the expansion of the absorber may be hindered by the load, and it may take time for the absorber to absorb. In the diaper 1 according to the present embodiment, since the discharged liquid can be absorbed in the convex portion 17 in addition to the flat portion of the absorber 8, the absorption area of the discharged liquid is wider and the absorption efficiency of the discharged liquid is improved as compared with the case where the absorber 8 is flat. This makes it possible to suppress leakage of urine in the diaper 1, and to reduce discomfort and rough skin caused by long-term retention of discharged liquid between the skin surface and the absorber 8.

Next, a case where the wearer of the diaper 1 is a male will be described. The design is as follows: when the diaper 1 is worn by a male, the crossing portion of the string rubber 4F3 is located on the crotch side of the penis (male sexual organ) of the male. In other words, the penis of the male is located on the front region 1F side of the crossing portion of the string rubber 4F 3. Thus, the crossing portion of the string rubber 4F3 is located on the crotch side of the region corresponding to the penis. In the diaper 1, the outer body and the inner body including the absorber 8 in the non-adhesive region 13 are pulled up toward the front region 1F by the string rubber 4F3, so that the absorber 8 can be abutted against the rear side of the testis to form a space for holding the penis in the region corresponding to the penis. Since the male wearer urinates from the urethral orifice of the penis, the diaper 1 can control the flow direction of the discharged liquid and suppress leakage by holding the penis.

In addition, it is designed to: when the diaper 1 is worn by a male, the testis is located approximately at the crossing portion of the string rubber 4F 3. Thus, the crossing portion of the thread rubber 4F3 includes a region corresponding to the testis of the male wearer. Along the bulge of the testis, the absorber 8 bulges, but the testis can be held by lifting the absorber 8 with the wire rubber 4F 3. Even if the position of the testis is shifted or the position of the testis relative to the diaper 1 is different depending on the wearer, the non-adhesive region 13 is provided, so that the crossing portion of the string rubber 4F3 can be moved relative to the testis. Thus, the absorber 8 at the portion where the testis is located is lifted by the string rubber 4F3, whereby the testis can be held.

As described above, the diaper 1 according to the present embodiment can maintain the position of the male sexual organ even when the wearer is a male, and the urethral orifice is in the vicinity of the protruding end portion of the protruding portion 17. Here, when the wearer is a male, the flow direction of the discharged liquid is affected by the direction of the penis. Depending on the direction of the penis, the discharged liquid U may be generated on the front body region 1F side of the convex portion 17, and may be generated on the crotch side of the convex portion 17 as in the case where the wearer is a female. When the discharged liquid is generated on the crotch side of the convex portion 17, the diaper 1 according to the present embodiment can efficiently absorb the discharged liquid by the same effect as in the case where the wearer is female, and can suppress the deterioration of the wearing feeling and the rough skin. When the discharge liquid is generated on the front body region 1F side of the convex portion 17, the convex portion 17 blocks the discharge liquid U from flowing into the load portion W and the crotch side where the absorption capacity becomes low when the load is applied. Further, since the front region 1F side of the convex portion 17 is separated from the load portion W, the expansion of the absorber 8 is not hindered, and the absorption capacity of the absorber 8 in the flow direction of the discharged liquid is high. Therefore, the discharged liquid generated on the front body region 1F side of the convex portion 17 is quickly absorbed by the absorber 8, and does not cause deterioration of the wearing feeling or roughness of the skin.

The diaper 1 according to the present embodiment is pulled up toward the front body region 1F by the absorber 8 on the skin surface side of the non-adhesive region 13, and separation of the absorber 8 from the skin surface of the wearer can be suppressed. Further, by providing the convex portion 17 on the absorber side of the non-adhesive region 13 and pulling up the absorber 8 in the vicinity of the convex portion 17 toward the front body region 1F by the urging force of the wire rubber 4F3, the absorbing ability is not lowered even when a load is applied to the absorber 8, and a comfortable diaper 1 can be provided. And, this effect is not affected by the sex of the wearer. The raised ends of the three-dimensional gathers 3BL and 3BR serving as leakage preventing walls are positioned further outward in the width direction than the widthwise ends of the absorbent core 8c at the convex portions 17, and have lower rigidity than the extension region of the absorbent core 8c, and therefore are easily bent by bending of the convex portions 17 to come into contact with the skin surface of the wearer. Further, since the three-dimensional gathers 3BL and 3BR are provided with the skin contact portions which contact the skin surface of the wearer in the form of a surface, the occurrence of side leakage can be suppressed even if the convex portions 17 are generated in the absorber 8.

Fig. 13 is a conceptual view of the vicinity of the absorber end sheet portion joined to the outer body. At least at the longitudinal ends of the end sheet portions 8e, the adhesive HM is not applied between the back sheet 6 and the exterior body. As shown in fig. 4, the adhesive HM may not be applied between the whole of the back sheet 6 constituting the end sheet portion 8e and the exterior body. Since the adhesive HM is not applied, the longitudinal end of the end piece 8e is not joined to the exterior body. The longitudinal end of the end piece 8e, which is the longitudinal end of the absorber 8, is a free end rising toward the skin surface side of the wearer.

As shown in fig. 3B, in the outer body of the region corresponding to the end piece 8e, a part of the wire rubber 4F2, 4R2 extends. The string rubbers 4F2, 4R2 are adhered to the outer package in an elongated state. When the diaper 1 is not worn, the outer body contracts inward in the width direction. At this time, the longitudinal end of the end piece 8e is not joined to the exterior body. The end piece 8e slightly contracts when receiving the biasing force of the string rubbers 4F2, 4R2, but does not contract like the outer case, and floats up to the skin surface side.

When the diaper 1 is worn, the string rubbers 4F2, 4R2 are stretched, and the end piece 8e is pressed against the skin surface side of the wearer. Thus, the longitudinal end of the end piece 8e is in contact with the skin surface in a planar manner, and functions as a leakage preventing wall. The diaper 1 according to the present embodiment effectively blocks movement of discharged liquid to the longitudinal end portion side, and suppresses abdomen leakage and back leakage. The string rubbers 4F2, 4R2 overlapped with the end piece 8e are an example of a plurality of elastic members in the present disclosure.

Further, a part of the outer side of the absorber 8 in the longitudinal direction overlaps with the wire rubbers 4F2, 4R 2. The linear rubbers 4F2, 4R2 shrink the absorber 8 inward in the width direction in the range where the adhesive HM is applied. The absorber 8 has an absorbent core 8c. The absorbent core 8c has higher rigidity than other components of the diaper 1, regardless of whether the absorbent core 8c is composed of short fibers and SAP, is composed of only short fibers, and is composed of only SAP. In the extension of the absorbent core 8c, the widthwise central portion of the absorber 8 is curved in an arcuate shape toward the skin surface side of the wearer, forming a so-called dome shape.

By forming the dome shape near the longitudinal end portion of the absorber 8, the proportion of the absorber 8 that is in contact with the skin surface of the wearer increases. As a result, the flow of the discharged liquid that moves in the longitudinal direction can be suppressed until the discharged liquid reaches the longitudinal end portion of the absorber 8. The top sheet 9 and the core wrap sheet 7 are liquid permeable, and the absorbent core 8c is liquid absorbent. Thus, the absorber 8 can absorb the liquid discharged from the liquid discharge device, the liquid discharged from the liquid discharge device being suppressed from flowing, in the vicinity of the longitudinal end portion, and the liquid discharged from the liquid discharge device can be prevented from moving to the longitudinal end portion.

On the other hand, when the absorbent core 8c is bent toward the skin surface side, a space may be formed between the non-skin surface side of the absorbent body 8 and the backsheet 6. Considering that the discharged liquid flows in this space to reach the end in the longitudinal direction. In the diaper 1 according to the present embodiment, the end piece portion 8e is provided on the further longitudinal end side of the extension region of the absorbent core 8 c. The discharged liquid moving in the longitudinal direction inside the absorber 8 reaches between the end sheet portion 8e and the end portion of the absorbent core 8c, and is further suppressed from flowing, and is sequentially absorbed by the absorbent core 8 c.

Further, in the vicinity of the longitudinal end portions of the absorber 8, wrinkles may be gathered in the absorber 8 depending on the biasing force, external pressure, wearer's body shape, etc. of the string rubbers 4F2, 4R2, and the like, and may not necessarily have a dome shape bent toward the skin surface side. In such a case, the discharged liquid may reach the longitudinal end portion through the gather portion, but the longitudinal end portion of the end portion sheet portion 8e stands up toward the skin surface side of the wearer and comes into contact with the skin of the wearer in a planar manner to form the leakage preventing wall, so that leakage of the discharged liquid from the longitudinal end portion of the absorber 8 can be suppressed.

In the vicinity of the longitudinal end portion of the absorber 8, thread rubbers 4F2, 4R2 extending in the width direction are provided at predetermined intervals in the longitudinal direction in the outer body including the inner cover sheet 5. By the contraction of the wire rubbers 4F2, 4R2 inward in the width direction, fine, wrinkled irregularities are formed between the wire rubbers constituting the wire rubbers 4F2, 4R2. The irregularities function as a cushion, and the wire rubbers 4F2 and 4R2 are suppressed from giving a sense of incongruity to the skin surface of the wearer.

The absorber 8 overlaps the outer case in the thickness direction, and overlaps a part of the string rubbers 4F2, 4R2 also in the vicinity of the longitudinal end of the absorber 8. The absorber 8 is joined to the outer body in the extension region of the absorbent core 8c, and also overlaps with a part of the string rubbers 4F2, 4R2 in a part of the absorber 8. The absorbent core 8c is rigid, and therefore, is deformed inward in the width direction by the biasing force of the string rubbers 4F2, 4R2, but no wrinkles and irregularities are formed at least on the skin surface side thereof. In the extended region of the absorbent core 8c, the absorber 8 is folded inward in the width direction, and the widthwise central portion thereof bulges in a dome shape toward the skin surface side so as to come into contact with the skin surface of the wearer. With this configuration, the ratio of the longitudinal end region of the absorbent core 8c to the skin surface of the wearer increases, and the flow of the discharged liquid that moves in the longitudinal direction can be suppressed until the discharged liquid reaches the longitudinal end of the absorbent body 8.

On the other hand, the end sheet portion 8e of the absorber 8 is constituted by the backsheet 6 or a sheet obtained by joining the backsheet 6 and the topsheet 9. When the core wrap sheet 7 is extended toward the end sheet portion 8e, the core wrap sheet 7 joined to the inner side thereof is joined to the top sheet 9 on the skin surface side and joined to the back sheet 6 on the non-skin surface side to form the end sheet portion 8e. These sheets forming the end sheet portions 8e do not have liquid absorbency, but are easily bent because of their low rigidity compared to the absorbent core 8c having high rigidity. The end piece 8e overlaps with a part of the wire rubbers 4F2, 4R2 in the thickness direction. However, the end piece 8e as a whole or at least the longitudinal end of the end piece 8e is not joined to the exterior body. Thus, the force received by the end piece 8e from the wire rubbers 4F2, 4R2 is reduced at least at the longitudinal ends thereof.

Although a plurality of wrinkles are formed in the end piece portion 8e, each of the wrinkles is wider than the wrinkles formed in the outer package, and the depth is shallower than the wrinkles formed in the outer package. Further, since the forces received by the end piece portions 8e from the linear rubbers 4F2, 4R2 are stronger on the crotch region 1B side, the plurality of folds are so-called horn-shaped, which are narrow in the width direction on the crotch region 1B side and wide in the width direction at the longitudinal end portions.

Since the wrinkles are shallow at the longitudinal ends of the end piece 8e and the wrinkles are wide in the width direction, the contact ratio of the longitudinal ends of the end piece 8e with the skin surface of the wearer increases. Thus, the end piece portion 8e effectively functions as a leakage preventing wall that prevents the discharged liquid flowing in the longitudinal direction from reaching the outer package.

Fig. 14 is a view showing the longitudinal end portion of the absorbent body including the three-dimensional gather. In the present figure, the precursor region 1F side is shown. However, since the structure of the absorber 8 is the same on both sides in the longitudinal direction, the structure is also the same as that of the front region 1F with respect to the rear region 1R. Side panels 10L, 10R are overlapped at the widthwise end portions of the absorber 8. The side panels 10L, 10R are disposed on the inner side in the width direction, and are raised toward the skin surface side of the wearer by the urging force of the linear rubber extending in the longitudinal direction. Thus, the side panels 10L, 10R form three-dimensional gathers 3BL, 3BR functioning as leakage preventing walls that prevent discharged liquid from leaking to the outside in the width direction.

The three-dimensional gathers 3BL, 3BR are joined to the longitudinal end portions of the absorbent body 8 at the longitudinal end portions by heat fusion or the like. By joining the three-dimensional gathers 3BL, 3BR to both longitudinal end portions of the absorbent body 8, the joined portions serve as starting points for the erection of the three-dimensional gathers 3BL, 3BR, and the three-dimensional gathers 3BL, 3BR can be erected around the crotch region 1B to function as leakage preventing walls.

The side sheets 10L, 10R and the absorber 8 are entirely overlapped over the extension region of the absorber 8, and the joined portion reaches the end sheet portion 8e. Therefore, the rigidity of the widthwise ends of the end piece portions 8e is enhanced by the joining of the side pieces 10L, 10R. By the high rigidity of the widthwise ends of the end piece 8e, the entire end piece 8e is easily bent toward the skin surface side. Further, the rigidity of the widthwise ends of the end piece 8e is high, so that the force indirectly applied by the wire rubbers 4F2 and 4R2 to bend the end piece 8e inward in the widthwise direction can be more easily counteracted. With this configuration, the bending of the longitudinal ends of the end piece portions 8e does not occur or becomes very gentle, and even if wrinkles are formed, the depth of the wrinkles is reduced and the size of the wrinkles is increased in the width direction. As a result, the longitudinal end of the end piece 8e comes into contact with the skin surface of the wearer over a large area, and the function as a leakage preventing wall in the longitudinal direction can be more effectively exhibited.

Further, the diaper 1 is folded in the longitudinal direction in a state before use. In the state of use, the fold mark also remains as a fold C, and the absorber 8 is folded toward the non-skin surface side in the vicinity of the fold C. The absorber 8 is bent toward the skin surface side in the overlapping region with the thread rubber 4F3 to form a convex portion 17, and is brought into contact with the skin surface of the wearer. The end piece 8e is also formed in a dome shape so as to be in contact with the skin surface of the wearer. On the other hand, in the vicinity of the fold C, the absorber 8 is curved toward the non-skin surface side, and therefore a space capable of accumulating discharged liquid can be formed. In this space, the absorbent core 8c extends, and the discharged liquid that has entered between the convex portion 17 and the end piece 8e is sequentially absorbed by the absorbent core 8 c. With this configuration, the diaper 1 according to the present embodiment can absorb the discharged liquid while suppressing the flow of the discharged liquid in the longitudinal direction.

Fig. 15 is a cross-sectional view schematically showing a state in which the side flap portions 14L, 14R of the diaper 1 according to the embodiment are raised. Fig. 15 is a schematic view of the structure of the absorber 8, corresponding to a cross-sectional view of the diaper 1 cut along the line AA in fig. 3B. As described above, since the string rubbers 4F3, 4R3 extending in the width direction are provided in the outer body in an extended state so as to overlap the side wing portions 14, the side wing portions 14L, 14R are biased toward the skin surface side by contraction of the string rubbers 4F3, 4R 3. As a result, the side wing portions 14L, 14R stand up toward the skin surface side as shown in fig. 15. The crotch region 1B is a region of the diaper 1 where the skin of the wearer is most likely to be separated. In contrast, in the diaper 1 according to the present embodiment configured as described above, the side flap 14 including no absorbent core 8c is formed in the crotch region 1B, so that the side flap 14 can be raised toward the skin surface side of the wearer. In addition, by providing at least a part of the fold lines 10L2, 10R2, which are the base ends of the three-dimensional gathers 3BL, 3BR, at positions overlapping the side flap portions 14, as shown in fig. 15, the three-dimensional gathers 3BL, 3BR can be further raised from the widthwise ends of the side flap portions 14 in a state in which the side flap portions 14 are raised toward the skin surface side and approach the skin surface of the wearer. Therefore, according to the diaper 1, the three-dimensional gathers 3BL and 3BR can be more reliably brought into contact with the skin even in the crotch region 1B, and side leakage of discharged material can be suppressed.

In the diaper 1 according to the present embodiment, the adhesive portion 12 is formed so that the width thereof is narrowed from the rear body region 1R side toward the longitudinal center side (the crotch region 1B side). Thus, the width of the side wing 14 is widened from the rear body region 1R side toward the longitudinal center side (the crotch region 1B side). That is, the side wing portion 14 is formed wide at the center in the longitudinal direction. Accordingly, the height of the side wing 14 (hereinafter, also referred to as the raised height) when the side wing 14 is raised by the contraction force of the string rubbers 4F3, 4R3 can be increased near the center in the longitudinal direction of the crotch region 1B. As a result, the side flap 14 can be brought closer to the skin even in the vicinity of the center in the longitudinal direction where the skin of the wearer is most likely to be separated in the crotch region 1B, and the three-dimensional gathers 3BL, 3BR can be reliably brought into contact with the skin. Further, the raised height of the side wing 14 is increased near the center in the longitudinal direction of the crotch region 1B to secure a large urine storage space, but the raised height of the side wing 14 is decreased toward the rear body region 1R. As a result, the three-dimensional gathers 3BL and 3BR naturally contact the skin surface on the back region 1R along the back skin surface that is flatter than the skin surface on the crotch side. As a result, for example, even when the wearer sleeps in a sideways position or the like and discharges urine sideways toward the diaper 1, the urine can be stored in the space. Even if urine overflows from the space to the back side, the urine naturally spreads to the back side while being suppressed by the three-dimensional gathers 3BL and 3BR, and is absorbed. The width of the side flap portion 14 may be narrowed from at least one side in the longitudinal direction toward the crotch region 1B side, and the width of the adhesive portion 12 may be narrowed from the front body region 1F side toward the crotch region 1B side, or may be narrowed from both end portions in the longitudinal direction toward the crotch region 1B side.

The diaper 1 according to the present embodiment includes: a top sheet 9 having a water permeable region, provided on the skin surface side of the absorber 8; the water-impermeable side sheets 10L, 10R are side sheets 10L, 10R for forming the three-dimensional gathers 3BL, 3BR, and are disposed on the skin surface side of the top sheet 9. The three-dimensional gathers 3BL and 3BR are joined to the top sheet 9 and stand up from fold lines 10L2 and 10R2, which are joining ends with the top sheet 9, toward the skin surface side. The three-dimensional pleats 3BL, 3BR have: the base end side sheets 3BL1, 3BR1 extend inward in the width direction from the joined end portions with the top sheet 9; a base end adhesive portion 31 for fixing both longitudinal end portions of the base end portion side sheets 3BL1, 3BR1 to the top sheet 9, respectively; the folded portions 3BL2, 3BR2 formed on the widthwise inner side edges of the base end portion side panels 3BL1, 3BR1, and folded from the base end portion side panels 3BL1, 3BR1 to the skin surface side and widthwise outer side; the free end side panels 3BL3, 3BR3 extend outward in the width direction from the turnups 3BL2, 3BR 2; a free end adhesive portion 32 for fixing both longitudinal end portions of the free end portion side panels 3BL3, 3BR3 to the base end portion side panels 3BL1, 3BR1, respectively; and free end portions 3BL4, 3BR4 provided at the tips of the free end portion side pieces 3BL3, 3BR 3. The base end side panels 3BL1, 3BR1 are provided with wire rubbers 10L1A, 10R1A extending in the longitudinal direction in an extended state, and the free end side panels 3BL3, 3BR3 are provided with wire rubbers 10L1B, 10R1B extending in the longitudinal direction in an extended state.

That is, the three-dimensional gathers 3BL, 3BR have free end side panels 3BL3, 3BR3 facing the outer side in the width direction in addition to the base end side panels 3BL1, 3BR1 facing the inner side in the width direction. More specifically, the three-dimensional gathers 3BL and 3BR have an inwardly and outwardly folded shape folded inward and outward from the base end portion. The free end side panels 3BL3, 3BR3 can be brought into contact with the skin of the wearer in a range from the turnups 3BL2, 3BR2 to the free ends 3BL4, 3BR4, and therefore can be brought into contact with the skin more reliably than in the case where the free end side panels 3BL3, 3BR3 are not provided.

As described above, in the diaper 1, at least in the side end overlapping region A1, the outer body and the widthwise end of the absorber 8 are not bonded. Thus, in the side end overlapping region A1, the absorber 8 is easily deformed. If the widthwise end portion of the absorbent body 8 in the side end portion overlapping region A1 is deformed inward in the widthwise direction (for example, if the widthwise end portion of the absorbent body 8 is folded inward in the skin surface side or is recessed inward in the widthwise direction), a situation may occur in which the interval between the three-dimensional gathers 3BL, 3BR is narrowed in planar view, or a situation in which the widthwise end portion of the absorbent body 8, the three-dimensional gathers 3BL, 3BR and the absorbent core 8c overlap in planar view, that is, a situation in which the widthwise end portion of the absorbent body 8, the three-dimensional gathers 3BL, 3BR are covered on the absorbent core 8c. If these circumstances occur, the passage width for the wearer's discharged liquid to reach the absorber 8 from the excretory opening (urethral opening, anus) is narrowed, and therefore the discharged liquid may collide with the side flaps 14 and the three-dimensional gathers 3BL, 3BR, and the discharged liquid may not reach the absorber 8. That is, the side flap portion 14 and the three-dimensional gathers 3BL and 3BR may prevent the discharged material from reaching the absorbent core 8c. As a result, there is a concern that the discharged liquid may leak out of the absorbent article. Further, even if the discharged material can reach the absorbent core 8c, the discharged material cannot reach the widthwise center, and the absorption position may be deviated to one of the right and left, and as a result, leakage may occur.

In contrast, in the diaper 1 according to the present embodiment, the absorber 8 is bent so as to be convex toward the skin surface side of the wearer in the crotch region 1B, and the convex portion 17 extending in the width direction is formed. The convex portion 17 is formed at least across the side end overlapping regions A1, A1 on both sides in the width direction. The convex portions 17 extend in the width direction, and thus function as ribs (beam members) that reinforce the absorber 8 against forces inward in the width direction. In the diaper 1 according to the present embodiment, such protruding portions 17 are formed so as to extend between the side end overlapping regions A1 and A1 on both sides in the width direction, whereby the widthwise end portions of the absorber 8 in the side end overlapping region A1 are prevented from being deformed inward in the width direction. In this way, the three-dimensional gathers 3BL and 3BR can be more reliably brought into contact with the skin in the side end overlapping region A1, and the passage width for the discharged liquid of the wearer from the excretory opening to reach the absorbent core 8c can be ensured. Thus, the bias of the absorption position of the discharged material in the width direction with respect to the center of the absorbent body 8 and the absorbent core 8c, which is not reached by the discharged material, can be suppressed. As a result, according to the diaper 1, side leakage of discharged material can be more suitably suppressed.

As shown in fig. 7, the convex portion 17 is formed between the base end portions of the side wing portions 14L, 14R on both sides in the width direction. As a result, as shown in fig. 15, the side wing 14 is supported from the inner side in the width direction by the convex portion 17, and the side wing 14 is thereby raised toward the skin surface side, but the side wing 14 can be prevented from being bent from the base end portion so as to incline inward in the width direction (so as to fall down), and the base end portion of the side wing 14 is recessed inward in the width direction. That is, the side wing 14 can be put in a state of protruding outward in the width direction by suppressing the side wing 14 from deforming inward in the width direction. As a result, the three-dimensional gathers 3BL and 3BR can be more reliably brought into contact with the skin, and side leakage of the discharged material can be more suitably suppressed.

As described above, the diaper 1 according to the present embodiment has a dome shape that contacts the skin surface in the vicinity of the longitudinal end portion of the absorber 8, and the protruding portion 17 that contacts the skin surface is formed similarly to the extension of the linear rubber 4F3, thereby suppressing leakage of the discharged liquid. Further, the three-dimensional gathers 3BL and 3BR are folded inward and outward from the base end portions to the inside and folded outward on the outer sides in the width direction, and the side flaps 14 provided on the non-skin surface side of the three-dimensional gathers 3BL and 3BR are raised toward the skin surface side to suppress side leakage of discharged material. In the end region in the longitudinal direction of the absorber 8, the widthwise end of the absorber 8 stands up toward the skin surface side and approaches the skin surface of the wearer, so that side leakage at the longitudinal end can be suppressed. In addition, between the convex portion 17 and the longitudinal end portion, a crease C remains as a fold trace folded in the longitudinal direction in a state before use, and the absorbent body 8 is folded toward the non-skin surface side, thereby forming a space capable of temporarily holding the discharged liquid. The absorbent body 8 in this space has an absorbent core 8c, and thus the discharged liquid that has entered this space is rapidly absorbed by the absorbent core 8 c. Thus, leakage of discharged liquid can be suppressed, and comfort of the wearer can be maintained.

Fig. 16 is a diagram showing a more preferable form of the bonded portion 12. As described above, the shape of the three-dimensional gathers 3BL and 3BR, the shape of the side flap 14, the fold line C, the convex portion 17, the end piece portion 8e, and the dome shape formed in the vicinity of the longitudinal end portion and abutting against the skin surface suppress the flow of the discharged liquid generated on the abdomen side, and the discharged liquid is absorbed by the absorber 8 without causing leakage, so that the comfort of the wearer can be maintained.

These effects are further enhanced by making the shape of the adhesive portion 12 the shape shown in fig. 16. Specifically, the longitudinal end portion of the adhesive portion 12 shown in fig. 16 is arranged in a comb-tooth shape on the longitudinal end portion side of the absorber 8, and a comb-tooth portion 12C is formed. Near the longitudinal end of the absorber 8, the absorber 8 overlaps with the wire rubbers 4F2, 4R 2. The absorber 8 gives the linear rubbers 4F2 and 4R 2a biasing force, which causes the sample to be removed. On the other hand, in a state where the absorber 8 is not subjected to the urging force of the wire rubbers 4F2, 4R2, an appropriate dome shape is not formed. Therefore, in the form shown in fig. 16, by forming the comb-tooth portions 12C in the vicinity of the longitudinal end portions of the absorber 8 at the bonding portions 12, the forces of the wire rubbers 4F2, 4R2 can be adjusted to form a dome shape in an optimal manner.

In the embodiment shown in fig. 16, the adhesive portion 12 is provided with a cutout portion 12N on the outer side in the width direction of the longitudinal end portion side, to which no adhesive is applied. In the diaper 1 according to the present embodiment, the side sheets 10L and 10R are joined to the widthwise end portions on the outer side in the longitudinal direction of the absorbent body 8, so that the rigidity is higher than that on the inner side in the longitudinal direction, and the portions are easily raised toward the skin surface side by the urging forces of the three-dimensional gathers 3BL and 3BR, so that the flow of discharged liquid is prevented at the portions. By providing the cutout 12N in the adhesive portion 12 at this portion, the influence of the exterior body is reduced, and this portion is more easily erected. In this way, by adjusting the shape of the adhesive portion 12, the leakage suppressing effect of the discharged liquid can be further improved, which is preferable.

While the embodiment of the diaper 1 as the absorbent article according to the present invention has been described above by way of example, the above embodiment may be modified in addition, omission, substitution, and the like as appropriate without departing from the gist of the present invention.

Claims

1. An absorbent article (1) having a front body region (1F) located on the abdomen side of a wearer in a wearing state, a crotch region (1B) located in a crotch, and a rear body region (1R) located on the back side, the front body region being provided in this order in a longitudinal direction, the absorbent article (1) having a length along the longitudinal direction and a width along a width direction orthogonal to the longitudinal direction, the absorbent article comprising:

An absorber (8) provided at a position including the crotch region (1B) and configured to absorb the discharged liquid of the wearer; and

Outer body (4, 5) disposed on the non-skin surface side of the wearer than the absorber (8),

In the end region in the longitudinal direction of the absorber (8), the widthwise end of the absorber (8) and the outer case (4, 5) are not bonded.

2. The absorbent article (1) according to claim 1, further comprising:

A top sheet (9) provided on the skin surface side of the wearer with respect to the absorber (8) and having a water permeable region; and

Leakage preventing walls (3 BL, 3 BR) formed of a water impermeable leakage preventing sheet disposed on the skin surface side of the top sheet (9), provided at the widthwise end portion of the absorber (8) so as to extend in the longitudinal direction and stand up toward the skin surface side,

The leakage preventing walls (3 BL, 3 BR) are joined to the top sheet (9) and stand up from the joining end with the top sheet (9) toward the skin surface side,

The leakage preventing walls (3 BL, 3 BR) have:

base end side pieces (3 BL1, 3BR 1) extending inward in the width direction from the joint ends; and

A base end fixing portion (31) for fixing the both ends of the base end side sheet (3 BL1, 3BR 1) in the longitudinal direction to the top sheet (9),

The 1 st stretchable members (10L 1A, 10R 1A) extending in the longitudinal direction are provided in the base end side panels (3 BL1, 3BR 1) in an extended state,

The widthwise end portion of the absorber (8) and the outer case (4, 5) are not bonded in the longitudinal direction range extending from a portion other than the portion fixed by the base end fixing portion (31) in the base end portion side sheets (3 BL1, 3BR 1).

3. Absorbent article (1) according to claim 2, characterized in that,

In the range of the length direction in which the base end fixing portion (31) is provided, the width direction end portion of the absorber (8) and the outer body (4, 5) are not bonded.

4. An absorbent article (1) according to claim 2 or 3, characterized in that,

The leakage preventing walls (3 BL, 3 BR) have:

Bending portions (3 BL2, 3BR 2) provided on the lateral sides of the base end portion side pieces (3 BL1, 3BR 1) on the inner sides in the width direction, and bending the base end portion side pieces (3 BL1, 3BR 1) toward the skin surface side and outward in the width direction;

free end side pieces (3 BL3, 3BR 3) extending outward in the width direction from the bending portions (3 BL2, 3BR 2);

a free end fixing portion (32) for fixing the two ends of the free end side pieces (3 BL3, 3BR 3) in the longitudinal direction to the base end side pieces (3 BL1, 3BR 1), respectively; and

Free end portions (3 BL4, 3BR 4) provided at the tips of the free end portion side pieces (3 BL3, 3BR 3),

The free end side panels (3 BL3, 3BR 3) are provided with 2 nd stretchable members (10L 1B, 10R 1B) extending in the longitudinal direction so as to overlap with the non-bonded regions of the width-direction end portions of the absorber (8) and the outer cases (4, 5).

5. An absorbent article (1) according to claim 2 or 3, characterized in that,

The absorbent body (8) has a pad-shaped absorbent core (8 c) configured to absorb the discharged liquid of the wearer,

The absorber (8) is bent so as to be convex toward the skin surface side, a convex portion (17) extending in the width direction is provided so as to overlap the side edge of the inner side in the width direction of the base end portion side sheet (3 BL1, 3BR 1) from the non-skin surface side,

In the range of the length direction in which the convex portions (17) are formed, the joined end portions of the base end portion side sheets (3 BL1, 3BR 1) and the top sheet (9) are located further to the outside in the width direction than the absorbent core (8 c).

6. The absorbent article (1) according to claim 5, characterized in that,

The outer body (4, 5) has a waist opening (2T) configured to allow the abdomen of the wearer to pass through and two leg opening portions (2L, 2R) configured to allow the legs of the wearer to pass through,

A3 rd stretchable member (4F 3) extending along one leg hole opening (2L, 2R) and across the crotch region (1B) and along the other leg hole opening (2L, 2R) is provided in the outer body (4, 5) in an extended state on the abdomen side of the wearer,

In the overlapping region of the crotch region (1B) where the 3 rd stretchable member (4F 3) and the absorber (8) overlap, a non-adhesive region (13) where the absorber (8) and the outer body (4, 5) are not adhered to each other is provided,

The absorber (8) and the outer body (4, 5) are bonded before and after the longitudinal direction of the non-bonded region (13).

7. Absorbent article (1) according to claim 1 or 2, characterized in that,

Further comprising water impermeable end pressing pieces (11F, 11R) for covering the longitudinal end portions of the absorber (8) from the skin surface side of the wearer,

In the region where the end pressing pieces (11F, 11R) and the absorber (8) overlap, the widthwise end of the absorber (8) and the outer case (4, 5) are not bonded.

8. Absorbent article (1) according to claim 2, characterized in that,

In a region where the outer body (4, 5) and the widthwise end portion of the absorber (8) overlap, including a region where the 1 st stretchable member (10L 1A, 10R 1A) and the widthwise end portion of the absorber (8) overlap and a side end portion overlapping region (A1) of a region extending from the region to both sides in the longitudinal direction, the outer body (4, 5) and the absorber (8) are not bonded.