CN118021537A

CN118021537A - Absorbent article

Info

Publication number: CN118021537A
Application number: CN202311485541.3A
Authority: CN
Inventors: 花生裕之
Original assignee: Oji Holdings Corp
Current assignee: Oji Holdings Corp
Priority date: 2022-11-11
Filing date: 2023-11-09
Publication date: 2024-05-14

Abstract

An absorbent article (1) provided with a front body region (1F) located on the abdomen side of a wearer in a wearing state, a crotch region (1B) located in the crotch, and a rear body region (1R) located on the back side in this order in the longitudinal direction, the absorbent article having a length along the longitudinal direction and a width along the width direction orthogonal to the longitudinal direction, the absorbent article comprising: an absorber (8) which is provided at a position including the crotch region (1B) and can absorb the discharged liquid of the wearer; outer bodies (4, 5) disposed on the non-skin surface side of the wearer with respect to the absorber (8); and an adhesive part (12) configured to adhere the absorber (8) to the outer body (4, 5), wherein the absorber (8) has a bending part extending in the width direction in a region corresponding to the urethral orifice of the wearer when worn on the front body region (1F) side, and wherein the absorber (8) is formed with a convex part bending convexly toward the skin surface side along the bending part.

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article.

Background

An absorbent article having an absorber that absorbs liquid such as urine and body fluid is known (japanese patent application laid-open publication No. 2018-29481). The liquid is absorbed quickly by penetrating into the absorber, and therefore the wearer can use the absorbent article without feeling offensive.

Disclosure of Invention

When liquid permeates into the absorber, the absorber expands to fix moisture. When the wearer takes a sitting position, a load may be applied to the absorber due to the weight of the wearer, and the expansion of the absorber may be hindered. In a state where expansion is hindered, the liquid absorbing ability of the absorber is lowered, and therefore the liquid stays between the skin surface of the wearer and the absorber for a long period of time. When the liquid stays between the absorber and the skin surface of the wearer for a long period of time, the wearing sensation may sometimes be reduced.

The invention provides an absorbent article which can easily maintain the absorption capacity even in a state of applying load to an absorber.

An absorbent article according to an aspect of the present invention is an absorbent article having a length along the longitudinal direction and a width along a width direction orthogonal to the longitudinal direction, the absorbent article being provided with a front body region located on the abdomen side of a wearer, a crotch region located in a crotch, and a rear body region located on the back side in this order in a longitudinal direction in a worn state, the absorbent article comprising: an absorber provided at a position including the crotch region and capable of absorbing discharged liquid of the wearer; an outer body disposed on a non-skin surface side of the wearer with respect to the absorber; and an adhesive portion configured to adhere the absorber to the outer body, wherein the absorber has a fold extending in the width direction in a region corresponding to a urethral orifice of a wearer corresponding to the urethral orifice of the wearer when worn on the front body region side, and wherein the absorber is formed with a bending portion that bends convexly toward the skin side along the fold.

In the absorbent article according to the above aspect, the height from the base to the top of the convex portion may be 10mm or more.

In the absorbent article according to the above aspect, the absorbent body may have a pad-shaped absorbent core capable of absorbing the discharged liquid of the wearer and a core wrap sheet covering the absorbent core,

The absorbent body may be provided with leakage preventing walls formed to extend in the longitudinal direction and to stand up toward the skin surface side of the wearer at the widthwise end portions thereof,

The rising end of the leakage preventing wall extending in the longitudinal direction may be located further outside in the width direction than the end in the width direction of the absorbent core at the convex portion.

In the absorbent article according to the above aspect, the leakage preventing wall may include: a rising portion rising from the rising end toward the skin surface side when worn; and a skin contact portion that is disposed on the skin surface side of the rising portion, has a plurality of elastic members extending in the longitudinal direction, and contacts the skin surface of the wearer.

The leakage preventing wall may be raised from the raised end toward the skin surface side, bent at a boundary with the skin contact portion, and raised toward the outer side in the width direction at the skin contact portion.

In the absorbent article according to the above aspect, the adhesive portion may not be disposed in the vicinity of the convex portion.

The vicinity of the convex portion may be a non-bonded region where the absorber and the outer body are not bonded.

In the absorbent article according to the above aspect, the 1 st stretchable member having a component that biases the outer body in the longitudinal direction may be disposed in an elongated state in the non-adhesive region of the outer body.

In the absorbent article according to the above aspect, the 1 st stretchable member may be disposed so as to cross the crotch region in the width direction along the leg hole opening of the outer body.

The non-adhesive region may be provided in a region where the 1 st stretchable member overlaps the absorber.

In the absorbent article according to the above aspect, the non-adhesive region may be provided so as to include the region corresponding to the urethral orifice on the front body region side.

In the absorbent article according to the above aspect, the absorbent body may be provided with a2 nd stretchable member having a component for biasing the non-bonded region of the absorbent body in the longitudinal direction in an elongated state.

In the absorbent article according to the above aspect, the absorbent body may have a groove portion extending in the longitudinal direction on the skin surface side.

The groove may be folded outward in the width direction in the region corresponding to the urethral orifice.

In the absorbent article according to the above aspect, the absorbent body may include: a pad-shaped absorbent core capable of absorbing the discharged liquid of a wearer; and a water-impermeable back sheet disposed on the non-skin surface side of the absorbent core and longer than the absorbent core in the longitudinal direction.

The absorbent body may have an end sheet portion including the back sheet at the longitudinal end of the absorbent body and at a position outside the longitudinal end of the absorbent core.

At least the longitudinal end side of the end piece may not be joined to the exterior body.

In the absorbent article according to the above aspect, the end portion of the absorbent body in the width direction may be non-bonded to the outer body in the end portion region of the absorbent body in the longitudinal direction.

In the absorbent article according to the above aspect, the absorbent article may further include: a top sheet provided on the skin surface side of the wearer with respect to the absorber and 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 an end portion of the absorber in the width direction, the leakage preventing wall extending in the longitudinal direction and standing 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; a base end fixing portion configured to fix both ends of the base end portion side sheet in the longitudinal direction to the top sheet, respectively; a bending portion formed on a side edge of the proximal portion side sheet on an inner side in the width direction, the bending portion being bent from the proximal portion side sheet toward the skin surface side and toward an outer side in the width direction; a free end side piece extending outward in the width direction from the folded portion; a free end fixing portion configured to fix both 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.

According to the present invention, it is possible to provide an absorbent article which can easily maintain the absorption capacity even in a state where a load is applied to the absorber.

Drawings

Features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals denote like elements, and in which:

fig. 1 is a perspective view of an adult pants-type disposable diaper according to embodiment 1.

Fig. 2 is an exploded perspective view of the diaper of embodiment 1.

Fig. 3 is a view schematically showing a state in which the diaper of embodiment 1 is developed and extended.

Fig. 4 is a plan view showing adhesion between the outer body and the absorbent body of the diaper according to embodiment 1.

Fig. 5 is a cross-sectional view of the diaper of embodiment 1.

Fig. 6 is a cross-sectional view of the diaper of embodiment 1.

Fig. 7 is a plan view showing the diaper according to embodiment 1, with the back sheet, absorbent core, top sheet, and side sheet extracted.

Fig. 8A is a diagram illustrating the convex portion.

Fig. 8B is a diagram illustrating the convex portion.

Fig. 8C is a diagram illustrating the convex portion.

Fig. 9 is a conceptual view of the vicinity of the absorber end sheet portion joined to the outer body.

Fig. 10 is a view showing the longitudinal end portion of the absorbent body including the three-dimensional gather.

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

Fig. 12 is a cross-sectional view showing a state in which the side flap portion of the diaper of the embodiment is raised.

Fig. 13 is a developed view of the diaper of embodiment 2.

Fig. 14 is a developed view of the diaper of embodiment 3.

Fig. 15 is a developed view of the diaper of embodiment 4.

Detailed Description

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.

< Embodiment 1>

Fig. 1 is a perspective view of a pants-type disposable diaper for adults (hereinafter simply referred to as "diaper") according to embodiment 1. 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 a thickness direction, and the direction perpendicular to either the longitudinal direction or the thickness direction is referred to as a width direction. The case of viewing from the thickness direction is referred to as 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 refers to a direction that coincides with the front, rear, left, and right of the wearer of the diaper 1 when the diaper is worn on the wearer. For example, in the present application, the term "left-right direction" refers to a direction that coincides with the left-right 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, a pants-type disposable diaper having a tubular structure with an opening through 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 pants-type disposable diapers for adults. The term "absorbent article" as used herein includes pants-type disposable diapers for children. Further, there are various absorbent articles such as a belt-type disposable diaper having a tubular structure, which is formed by attaching a belt fixed to a portion of the sheet-like member that covers the crotch (pudendum) of the wearer from the front body over the back body, to a portion of the sheet-like member that is adjacent to the other end portion of the sheet-like member, and which can cover the abdomen circumference and the crotch.

The diaper 1 has: a crotch region 1B, wherein the crotch region 1B is a portion corresponding to a crotch region that covers a pudendum (crotch) of a wearer in a worn state; a front body region 1F, the front body region 1F being a portion corresponding to a front body at a waist of a wearer and covering an abdomen side of the wearer; and a back region 1R, the back region 1R being a portion corresponding to a back at a waist of a wearer and for covering a back side of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B, and 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, and the right edge of the front body region 1F and the right edge of the rear body region 1R are joined to each other. Therefore, in the diaper 1, the trunk opening portion 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, and the left lower limb opening 2L and the right lower limb opening 2R are examples of a "leg hole opening" of the present disclosure. When the diaper 1 is worn with the left lower limb of the wearer inserted through the left lower limb opening 2L, the right lower limb of the wearer inserted through the right lower limb opening 2R, and the trunk portion of the wearer entering the trunk opening 2T, 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 lower limb opening 2L and the right lower limb opening 2R are fixed to the wearer's body in a state surrounding the thigh portion 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.

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 capable of absorbing 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. 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, leg gathers 3LF are provided in the front body region 1F, and leg gathers 3LR are provided in the rear body region 1R. In fig. 1, only the leg gather 3LF is illustrated. The three-dimensional gathers 3BL, 3BR and the waist gather 3R are adhered to the skin of the wearer by the elastic force of the linear 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. Therefore, the discharged matter discharged from the private parts of the wearer hardly leaks out of the diaper 1 and is absorbed by the absorber of 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. In the case of using the diaper 1 and the inner pad in combination, the inner pad is placed on the skin surface side of the diaper 1 so as to abut against the discharge hole of the wearer. The discharged liquid is first absorbed by the inner pad, and only the discharged liquid which cannot be absorbed by the inner pad reaches the absorber of the diaper 1 and is further absorbed. Therefore, 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 the intervention cost can be reduced. In addition, the diaper 1 can be used for a long time.

Fig. 2 is an exploded perspective view of a diaper 1 according to embodiment 1. 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 substantially hourglass-shaped (gourd-shaped) sheets bonded together to form the outer surface of the diaper 1, and the front body region 1F-side end portion and the rear body region 1R-side end portion are the same shape. 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. Linear rubber for forming the waist gather 3R and the leg gathers 3LF, 3LR is provided between the cover sheet 4 and the inner cover sheet 5. Further, a band-shaped expansion member such as rubber can be appropriately selected instead of the linear 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 configuration in which the absorber 8 and the back sheet 6, the top sheet 9, and the side sheets 10L, 10R are combined with each other with respect to the absorber 8 may be referred to as an inner body, and the cover sheet 4 and the inner cover sheet 5 in which the linear rubber is disposed may be referred to as an outer body (an example of an "outer body" in the present disclosure) as a concept corresponding to the inner body. 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 with respect to 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, which are 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 through the crotch in the longitudinal direction and a predetermined width in the width direction orthogonal to the longitudinal direction. The absorber 8 and the top sheet 9 are sheet-like members having a substantially rectangular appearance similar to 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 wearer's skin surface side of the absorber 8 so as to cover the water absorption surface of the absorber 8. Part or all of the top sheet 9 has liquid permeability. Therefore, in a state where the diaper 1 is worn, liquid discharged from the wearer is immersed in the absorbent body 8 through the topsheet 9 which may come into contact with the wearer's skin, where it is absorbed. 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 one or a plurality of absorbent pads and a core wrap sheet 7 (water permeable sheet) wrapped around 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 a narrowed portion 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 retained in the gaps between the short fibers of cellulose fibers such as pulp fibers, rayon fibers, and cotton fibers, and the short fibers obtained by hydrophilizing synthetic fibers such as polyethylene, polypropylene, and polyethylene terephthalate. When absorbing liquid discharged from the wearer, the absorbent core 8c swells the absorbent resin in the gaps held in the short fibers to hold the liquid 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 width of the core wrap sheet 7 is wider than the width of the absorbent core 8c, and by wrapping the absorbent core 8c with the core wrap sheet 7, the SAP of the absorbent core 8c is less likely to be mixed into other structures. In addition, the deformation of the absorbent core 8c is suppressed. The core wrap 7 can be formed of pulp fibers, and as an example, a tissue paper (tissue paper) can be used. The core wrap sheet 7 may be 1 sheet, or 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 and the skin surface side. When the core wrap sheet 7 is composed of 2 sheets, the width direction end portion of the upper side sheet may be wrapped with other sheets (for example, side sheets 10L and 10R, back sheet 6, and top sheet 9 described later). Further, the absorber 8 is wrapped with the back sheet 6 and the top sheet 9, and the shape of the body can be suppressed by these sheets, so that the core wrap sheet 7 may not be provided.

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. The widened portion 88C is a portion which is interposed between the wide portion 88A and the narrowest portion 88B and gradually widened from the crotch region 1B to the front body region 1F or the rear body region 1R. Since the crotch region 1B is held between the legs of the wearer, a compressive pressure is applied inward in the width direction. On the other hand, in the front body region 1F and the rear body region 1R, pressure is applied in the thickness direction of the absorbent core 8c by applying the weight of the wearer. Therefore, by providing the narrowed portion in the crotch region of the absorbent core 8c, the absorbent core 8c in the crotch region is set to a high order, and thus deformation inward in the width direction is prevented. In addition, in the front body region and the rear body region, the width of the absorbent core is enlarged to increase the area to which the weight is applied, thereby preventing the deformation in the thickness direction. Therefore, the absorbent core 8c is preferably an hourglass shape.

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. Therefore, when the back sheet 6, the absorber 8, and the top sheet 9 are laminated to cover the wearer's pudendum (crotch), both longitudinal ends of each 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, the discharged liquid is brought into contact with the absorber 8 via the top sheet 9 regardless of whether the wearer discharges the liquid to the outside in any one of the abdomen-down posture and the back-down posture.

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 in the width direction of the absorber 8, and constitute a pair of side sheets covering the side surfaces in the width direction of the absorber 8. In practice, the side panels 10L, 10R are provided at the long side portions of the top sheet 9. The linear rubbers 10L1 and 10R1 are bonded to the side sheets 10L and 10R in the longitudinal direction. Thus, when the edge 4F4 of the cover sheet 4, which is the left edge of the front body region 1F, and the edge 4R4 of the cover sheet 4, which is the left edge of the rear body region 1R, are joined to each other, and the edge 4F5 of the cover sheet 4, which is the right edge of the front body region 1F, and the edge 4R5, which is the right edge of the rear body region 1R, are joined to each other, the side panels 10L, 10R are pulled in the longitudinal direction by the contraction force of the linear rubbers 10L1, 10R1, and stand up from the exterior body (top sheet 9) along the fold-back lines 10L2, 10R2, as shown in fig. 1. As a result, three-dimensional gathers 3BL and 3BR (described in detail below) are formed, which prevent liquid from flowing out through the left lower limb opening 2L and the right lower limb opening 2R. The fold-back lines 10L2, 10R2 are joining end portions on the inner side in the width direction of the side sheets 10L, 10R joined to the top sheet 9, and are formed at positions overlapping the top sheet 9. The bonding method of the edge 4F4 and the edge 4R4 and the bonding method of the edge 4F5 and the edge 4R5 are not particularly limited, and 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 that is laminated on the wearer-side surface in the front region 1F of the cover sheet 4, and an end sheet 11R that is laminated on the wearer-side surface in the back region 1R of the cover sheet 4, with the backsheet 6, the absorber 8, the top sheet 9, and the side sheets 10L, 10R interposed therebetween. The end sheets 11F and 11R are elongated 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 contact portion of the diaper 1. The end pieces 11F and 11R are coated with an adhesive, and bonded to the inner cover piece 5 with the adhesive. The end sheets 11F, 11R are disposed closer to the skin surface 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.

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

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

Therefore, the linear rubbers 4F1, 4F2 are provided on the cover sheet 4 in such an orientation that the longitudinal direction, which is the expansion and contraction direction, is the lateral direction of the diaper 1. The linear 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. Therefore, 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 linear rubbers 4F1 and 4F2 and the linear 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 direction around the trunk. That is, the linear rubbers 4F1 and 4F2 and the linear rubbers 4R1 and 4R2 exert contraction 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 linear rubbers 4F2 and 4R2 on the crotch region 1B side overlaps the absorber 8.

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

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

Further, the cover sheet 4 is bonded with the linear rubber 4F3 and the linear rubber 4R3 in an elongated state. The linear rubbers 4F3 and 4R3 are stretchable members provided in the cover sheet 4 in the crotch region 1B side of the linear rubbers 4F2 and 4R 2. However, the linear rubbers 4F3 and 4R3 are arranged in a curved manner in the direction of the crotch region 1B, unlike the other linear rubbers extending in the width direction of the diaper 1 from the left end to the right end of the cover sheet 4, and overlap with a part of the core wrap sheet 7 at the narrowed portion of the hourglass-shaped absorbent core 8 c. The linear rubbers 4F3 and 4R3 are examples of the "1 st stretchable member" of the present disclosure. By contracting the linear rubbers 4F3, 4R3 themselves in the extending direction, the portions of the cover sheet 4 to which the linear rubbers 4F3, 4R3 are attached become pleated, and function as leg gathers 3LF, 3LR for making the diaper 1 adhere to the thighs of the wearer.

As shown in fig. 3, the linear rubber 4F3 forming the leg gathers 3LF is provided along the edges of the front body region 1F side of the right and left lower limb openings 2R and 2L into which the legs of the wearer enter when the diaper 1 is assembled. The linear rubber 4F3 is provided in the crotch region 1B on the front side so as to cross in the lateral direction (width direction), and overlaps the widened portion 88C of the absorbent core 8C. At the portion where the linear rubber 4F3 is provided so as to traverse in the left-right direction in this way, the linear rubber 4F3 overlaps the absorber 8 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. The arrangement of the linear rubber 4F3 in the region where the absorbers 8 overlap in the thickness direction is not limited to the case where the linear rubber crosses as shown in fig. 3. The linear rubber 4F3 may have a component in the width direction, and the component in the width direction in the extending direction of the linear rubber 4F3 is preferably larger than the component in the length direction. The linear rubber 4F3 is an example of the 1 st stretchable member in the present disclosure.

On the other hand, the linear 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 linear rubber 4R3 faces the width direction. However, the linear rubber 4R3 is cut at the center in the width direction, and the left linear rubber 4R3 and the right linear rubber 4R3 are not connected. The linear rubber 4R3 extends inward 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.

In the present application, the state in which sheets overlap is not limited to a state in which sheets overlapping each other are overlapped with each other in a state of being in full contact with each other, but includes a concept in which a part of the sheets overlap with 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 showing adhesion between the outer body and the absorbent body of the diaper according to embodiment 1. More specifically, a plan view is provided for explaining the bonding pattern between the outer body and the absorber 8 of the diaper according to embodiment 1. Fig. 4 schematically shows the diaper 1 of embodiment 1 in an unfolded and extended state. In fig. 4, the top sheet 9, the side sheets 10L, 10R, and the end sheets 11F, 11R are omitted. 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 to the back sheet 6 of the inner case.

Specifically, the adhesive portion 12 that adheres the inner cover sheet 5 to the back sheet 6 is constituted 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 so as to be separated 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 portion 12a constituting the narrow portion 12B extends in a range other than both widthwise end portions of the absorber 8. More specifically, the linear adhesive portion 12a extends from the widthwise center of the absorber toward the widthwise outer side, and does not reach the widthwise end portion 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 a2 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 width of the 2 nd width portion 12B2 is narrower than the width of the 1 st width portion 12B 1. Therefore, 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 to the outer side 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 overlaps with the widthwise end portion of the adhesive portion 12.

The 1 st width portion 12B1 of the narrow portion 12B is adjacent to the wide portion 12R in the longitudinal direction. Therefore, 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 non-bonded 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 overlaps the absorber 8, a non-adhesive region 13 is formed between both widthwise ends 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 width portion 12B1, and 2 nd width portion 12B2 having different widths are adjacent 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 that the width thereof becomes narrower from the rear body region 1R side toward the longitudinal center side (the crotch region 1B side). The adhesive portion 12 may be formed in a stepped shape so that the width thereof becomes narrower from the front body region 1F side toward the longitudinal center side (the crotch region 1B side).

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 at the narrow portion 12B, and therefore the absorber 8 and the outer body are non-bonded to each other at the outer side in the width direction of the narrow portion 12B. In fact, the inner cover sheet 5 and the back sheet 6 are non-bonded to each other on the outer side in the width direction of the narrow portion 12B. Thus, side wing portions 14L, 14R which are non-adhesive 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 are non-bonded to the outer body, including portions extending in the longitudinal direction from the widthwise ends of the narrow portion 12B of the bonded portion 12 to the widthwise ends of the absorbent body 8. 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 portions 14L and 14R will be simply referred to as side portions 14 unless they are distinguished. A part of the side flap portion 14 overlaps the non-adhesive region 13. Since the side wing portions 14 formed on both sides in the width direction of the adhesive portion 12 are non-adhesive to the outer body, they are more likely to stand up toward the skin surface side of the wearer than the portions adhered to the outer body. The width of the adhesive portion 12 is not limited to the above-described case as long as the side wing portion 14 can be formed. For example, the adhesive portion 12 may be formed to have a width smaller than that of the absorber 8 over the entire longitudinal direction, instead of the stepped shape shown in fig. 4.

The absorbent core 8c is covered over its entire surface by the back sheet 6 and the top sheet 9. The back sheet 6 and the top sheet 9 are longer than the absorbent core 8c in the longitudinal direction. Therefore, an end sheet portion 8e is formed near the longitudinal end of the absorber 8, in which the absorbent core 8c does not extend, and only the back sheet 6 and the top sheet 9 extend. In the end sheet portion 8e, the back sheet 6 and the top sheet 9 may be joined.

In the present embodiment, the core wrap sheet 7 has the same length as the absorbent core 8c in the longitudinal direction, but a configuration may be considered in which the core wrap sheet 7 extends in the longitudinal direction and extends to the end sheet portion 8e as compared with the absorbent core 8 c. 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 in the end sheet portion 8 e. In this configuration, an adhesive such as a 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 sheets 7 on the skin surface side and the non-skin surface side may be bonded to each other. By extending the core wrap sheet 7 in a state where the absorbent core 8c is not covered on the end sheet portion 8e, the rigidity of the end sheet portion 8e can be improved.

The outer body (more specifically, the inner cover sheet 5) overlaps the side wing portions 14, and linear rubbers 4F3, 4R3 extending in the width direction are provided in an elongated state in the region overlapping the side wing portions 14 in the outer body. The linear rubbers 4F3, 4R3 are provided so as to overlap with the longitudinal ends of the side wing 14, the linear rubber 4F3 overlaps with the front end 1F of the side wing 14, and the linear rubber 4R3 overlaps with the rear end 1R of the side wing 14. In the region of the outer body overlapping the side wing 14, the linear rubbers 4F3, 4R3 extend from the widthwise outer end to the widthwise inner end of the side wing 14. That is, the linear rubbers 4F3, 4R3 are provided so as to overlap the widthwise outer end portions and the widthwise inner end portions of the side wing portions 14. The linear rubbers 4F3 and 4R3 extend to the region overlapping the adhesive portion 12. That is, the linear 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 linear 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 linear rubbers 4F3, 4R3 extending in the width direction are provided in an elongated state so as to overlap the side flap portions 14, and therefore, the side flap portions 14L, 14R are biased toward the skin surface side by contraction of the linear rubbers 4F3, 4R3, so that the side flap portions 14L, 14R can be easily lifted. In the present invention, the outer body may overlap at least a part of the side wing portion, and the 1 st stretchable member may be provided in the region overlapping the side wing portion. That is, at least a part of the region of the outer case where the 1 st stretchable member is provided may overlap with at least a part of the side wing portion. For example, in the present embodiment, the cover sheet 4 and the inner cover sheet 5 may be separated from each other at the center in the longitudinal direction without having a portion on the crotch side of the region overlapping the linear rubbers 4F3 and 4R 3.

Fig. 5 is a cross-sectional view of the diaper of embodiment 1. More specifically, the cross-sectional view schematically shows the cross-sectional configuration of the diaper 1 of the embodiment in the case where the diaper is taken at the AA line in fig. 3. In the present figure, the absorbent core 8c is wrapped with 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 around the side surface of the absorbent core 8c and reaches the skin surface side, and is folded back at the widthwise end portion of the absorbent core 8c so as to overlap the upper core wrap sheet 7f from the skin surface side. A hot-melt adhesive is applied between the folded-back portion of the lower core wrap sheet 7b and the upper core wrap sheet 7f so as to extend in the longitudinal direction, thereby forming an adhesive portion 16A. 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 has a width wider than that of the absorber 8, and the back sheet 6 wraps around the side surface of the absorber 8 and reaches the skin surface side, and is folded back at the widthwise end of the absorber 8 so as to overlap the folded back portion of the lower core wrap sheet 7b from the skin surface side. The adhesive portion 16B is formed by applying a hot-melt adhesive between the folded-back portion of the back sheet 6 and the folded-back portion of the lower core wrap sheet 7B so as to extend in the longitudinal direction. By this adhesive portion 16B, the back sheet 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 width of the top sheet 9 is also wider than the width of the absorber 8, and the top sheet 9 wraps around the side surface of the absorber 8 and reaches the non-skin surface side, and is folded back at the widthwise end portion of the absorber 8 so as to overlap the back sheet 6 from the non-skin surface side. The hot melt adhesive is applied between the folded back portions of the top sheet 9 and the back sheet 6 so as to extend in the longitudinal direction, thereby forming the adhesive portion 16C. 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 in the width direction of the diaper 1 and are laminated on the skin surface side of the top sheet 9. The side sheets 10L and 10R are wrapped around the side surface of the absorber 8 and reach the non-skin surface side, and are folded back at the widthwise end portions of the absorber 8 so as to overlap the backsheet 6 from the non-skin surface side. The adhesive portion 16D is formed by applying a hot melt adhesive between the folded-back portions of the side sheets 10L, 10R and the back sheet 6 so as to extend in the longitudinal direction. The side sheets 10L, 10R and the back sheet 6 are bonded to each other at the widthwise end portion on the non-skin surface side of the absorber 8 by the bonding portion 16D.

The side sheets 10L and 10R are raised toward the skin surface side at both widthwise end portions of the skin surface side of the absorbent body 8, and form three-dimensional gathers 3BL and 3BR for preventing lateral leakage of discharged liquid. Further, a hot melt adhesive is applied between the top sheet 9 and the side sheets 10L, 10R so as to extend in the longitudinal direction of the diaper 1, whereby the 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 so as to extend from the front body region to the rear body region so as to extend in the longitudinal direction of the diaper 1. Thus, the diaper 1 can suppress lateral 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 when the liquid permeates to the side of the widthwise end portion of the adhesive portion 16E, the diaper 1 can suppress lateral 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 to extend in the longitudinal direction and stand up toward the skin surface side. The three-dimensional gathers 3BL and 3BR stand up toward the skin surface side with the standing lines formed at the positions overlapping the top sheet 9, that is, the folding lines 10L2 and 10R2 as boundaries. The fold-back lines 10L2, 10R2 are formed along the side sheets 10L, 10R and the widthwise inner end portions of the adhesive portion 16E at positions inward in the width direction of the diaper 1 than the adhesive portion 16E. The three-dimensional gathers 3BL, 3BR are formed so as to stand up toward the skin surface side from the fold-back lines 10L2, 10R2 which are joining ends with the top sheet 9.

The three-dimensional gathers 3BL and 3BR are provided in a state folded toward the skin surface side as shown in fig. 5: the base end side panels 3BL1, 3BR1, the base end side panels 3BL1, 3BR1 extending inward in the width direction of the diaper 1 from the fold-back lines 10L2, 10R 2; the folded portions 3BL2, 3BR2 (an example of a "folded portion" of the present disclosure), the folded portions 3BL2, 3BR2 being formed extending in the longitudinal direction on the widthwise inner side edges of the base end portion side pieces 3BL1, 3BR1, and being folded from the base end portion side pieces 3BL1, 3BR1 toward the skin surface side and toward the widthwise outer side; the free end side panels 3BL3, 3BR3, which are folded outward in the width direction of the diaper 1 and extend outward in the width direction from the folded-back portions 3BL2, 3BR 2; and free end portions 3BL4, 3BR4, the free end portions 3BL4, 3BR4 being 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 back outwardly 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 folded-back portions 3BL2, 3BR2 to the free end portions 3BL4, 3BR 4.

The side sheets 10L, 10R are bonded in an elongated state and provided with a plurality of linear rubbers 10L1, 10R1 extending in the longitudinal direction of the diaper 1. The plurality of linear rubbers 10L1, 10R1 are arranged at intervals in the width direction of the diaper 1. The side sheets 10L and 10R are raised toward the skin surface side with the folded-back lines 10L2 and 10R2 as a boundary by the stretching force of the linear rubbers 10L1 and 10R1, thereby forming three-dimensional gathers 3BL and 3BR. The fold-back lines 10L2, 10R2 become rising ends when the three-dimensional gathers 3BL, 3BR are rising. The side panels 10L, 10R are in contact with the skin of the wearer in a range from the folded-back portions 3BL2, 3BR2 to the free end portions 3BL4, 3BR 4. The base end side panels 3BL1, 3BR1, the folded portions 3BL2, 3BR2, the free end side panels 3BL3, 3BR3, the free end portions 3BL4, 3BR4, and the linear rubbers 10L1, 10R1 of the side panels 10L, 10R constitute three-dimensional gathers 3BL, 3BR.

That is, when the diaper 1 is worn, the rising portions rising toward the skin surface side from the rising ends of the folding lines 10L2 and 10R2 to the folding portions 3BL2 and 3BR2 function as rising portions. The region from the folded-back portions 3BL2, 3BR2 to the free end portions 3BL4, 3BR4 of the linear rubbers 10L1, 10R1 which are elastic members extending in the longitudinal direction and are arranged on the skin surface side of the rising portion functions as a skin contact portion. As shown in fig. 5, the three-dimensional gathers 3BL and 3BR as leakage preventing walls have the following constitution: the rising portion rises from the rising end toward the inner side in the width direction, is bent to the opposite side at the boundary with the skin contact portion, and rises toward the outer side in the width direction at the skin contact portion.

In the diaper 1 of the present embodiment, one linear rubber 10L1, 10R1 is disposed on the widthwise inner side edges (i.e., the folded-back portions 3BL2, 3BR 2) of the base end side panels 3BL1, 3BR1, and two linear rubbers 10L1, 10R1 are disposed on the free end side panels 3BL3, 3BR 3. Hereinafter, as shown in fig. 5, the linear rubbers 10L1 and 10R1 provided on the widthwise inner side edges of the base end side panels 3BL1 and 3BR1 are referred to as linear rubbers 10L1A and 10R1A, and the linear rubbers 10L1 and 10R1 provided on the free end side panels 3BL3 and 3BR3 are referred to as linear rubbers 10L1B and 10R1B. The linear rubbers 10L1B and 10R1B are disposed so as to overlap with a region where the widthwise end portion of the absorber 8 and the outer cover are non-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 overlapped sheets and the number of adhesive sites are increased on the end side in the width direction than on the center side in the width direction. 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 back 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 central side. Therefore, 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 extends in the longitudinal direction of the diaper 1 including the region overlapping the linear rubber F3R, F L in the side flap portion 14, 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 of the diaper of embodiment 1. More specifically, the cross-sectional view schematically shows the cross-sectional structure of the diaper 1 according to the embodiment taken along the line BB in fig. 3. In the vicinity of the BB line, a linear rubber 4F3 is disposed on the non-skin surface side of the interior body, and the linear rubber 4F3 is overlapped in the thickness direction with respect to the non-skin surface side of the interior body, and is traversed in the width direction. As shown in fig. 4, in the extension region of the linear rubber 4F3, the inner body (more specifically, the back sheet 6) and the outer body (more specifically, the inner cover sheet 5) are not joined. On the other hand, the lower core wrap sheet 7b and the back sheet 6 are bonded to each other by an adhesive such as a hot melt adhesive. The lower core wrap sheet 7b and the absorbent core 8c may be bonded to each other by an adhesive such as a hot melt adhesive.

The core wrap 7 is formed of a pulp fiber sheet (paper towel as an example). Here, the tissue has a property of being easily broken after being wetted with water. That is, the core wrap sheet 7 is placed in a state where the diaper 1 absorbs discharged liquid, and is very easily broken. In the extension region of the linear rubber 4F3, when the outer body is joined to the inner body, the stretching of the linear rubber 4F3 due to the action of the wearer or the like is easily transmitted to the inner body. The lower core wrap sheet 7b of the inner body that absorbs the discharged liquid is placed in a state of being easily broken, and therefore, when the tensile force of the linear rubber 4F3 is directly transmitted, there is a possibility of breaking.

The lower core wrap sheet 7b is joined to the absorbent core 8c, and therefore, breakage of the lower core wrap sheet 7b easily causes deformation of the absorbent core 8 c. As shown in fig. 6, by not joining the absorber to the outer body in the extension region of the linear rubber 4F3, unnecessary tension can be suppressed from being applied to the lower core wrap sheet 7b in a state where the discharged liquid is absorbed, and breakage of the lower core wrap sheet 7b can be prevented. Since the lower core wrap sheet 7b is not broken, the absorbent core 8c can be prevented from being deformed.

Fig. 7 is a plan view showing the diaper 1 according to embodiment 1, in which the absorber 8, the top sheet 9, and the side sheets 10L and 10R are extracted. In fig. 7, the adhesive portion 12 is illustrated in a hatched pattern. 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.

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 to 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 to the base end portion side sheet 3BL 1. The base end bonding portion 31 and the free end bonding portion 32 are formed by applying a hot melt adhesive.

The base end 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 at a portion other than the end portion in the longitudinal direction. The base end bonding portion 31 bonds the lateral side edge of the base end portion side sheet 3BL1 on the inner side in the width direction to the top sheet 9. The base end side sheet 3BL1 is fixed to the top sheet 9 in a range where the base end adhesive portion 31 is formed in the longitudinal direction. The base end adhesive portion 31 fixes both longitudinal end portions of the base end portion side sheet 3BL1 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 linear rubber 10L 1. The three-dimensional gather 3BL stands up toward the skin surface side with the fold-back line 10L2 shown in fig. 7 as a boundary in the region where the base end adhesive portion 31 is not formed. The base end bonding portion 31 forms the longitudinal end side of the bonding portion 16E. The base end bonding portion 31 is formed to have a width larger than that of the bonding portion 16E located on the center side (crotch side) of the base end bonding portion 31 in the longitudinal direction. The free end portion side sheet 3BL3 shown in fig. 5 is fixed to the base end portion 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 up to the skin surface side at a portion 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 unfixed range R1. In other words, the non-fixed range R1 is a range in the longitudinal direction between the base end bonding portion 31 that fixes one end portion in the longitudinal direction of the base end portion side sheet 3BL1 and the base end bonding portion 31 that fixes 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. In the diaper 1 of the present embodiment, in the non-fixed range R1, the adhesive portion 12 is not present at both widthwise ends of the absorber 8, and the widthwise ends of the absorber 8 are non-adhered to the outer body.

The range in which the base end adhesive portion 31 is formed in the longitudinal direction of the diaper 1 is set as a fixed range R2. In other words, the fixing range R2 is a range in the longitudinal direction in which the base end bonding portion 31 extends, and is a range in the longitudinal direction in which a portion of the base end side panels 3BL1, 3BR1 fixed by the base end bonding portion 31 extends.

In the longitudinal direction, the end portion on the crotch side (longitudinal direction 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 other words, the free end bonding portion 32 extends toward the longitudinal center side from the base end bonding portion 31. Therefore, 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 elastic force of the linear rubbers 10L1B, 10R1B provided on the free end side panels 3BL3, 3BR3 acts on the base end side panels 3BL1, 3BR1 via the free end adhesive portion 32, but since the free end adhesive portion 32 exists in the non-fixed range R1 where the base end side panel 3BL1 is not fixed to the top sheet 9, the fixed portion between the base end side panels 3BL1, 3BR1 and the free end side panels 3BL3, 3BR3 in the non-fixed range R1 is pulled by the free end side panel 3BL3 by the elastic force of the linear rubbers 10L1B, 10R1B, and floats from the top sheet 9. The base end side panels 3BL1, 3BR1 float at both ends in the longitudinal direction of the non-fixed range R1, whereby the three-dimensional gathers 3BL, 3BR are easily erected.

Further, the linear rubber 10L1 disposed on the outer side in the width direction of the diaper 1 out of the 3 linear rubbers 10L1 has a lower elongation than the linear rubber 10L1 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 linear rubber is a value obtained by dividing the length (cut length) of the linear rubber when the linear rubber is incorporated into a diaper by the natural length of the linear rubber and expressing the ratio in percentage. The linear rubber 10L1 is assembled in an extended state to the diaper 1 so as to exert a contraction force. Therefore, the draft ratio becomes a value of more than 100%. In the diaper 1 of the present embodiment, the linear rubber 10L1 disposed on the outer side in the width direction has a lower elongation than the linear rubber 10L1 disposed on the inner side in the width direction, so that the inner region is contracted in the side sheet 10L than the outer region, and the outer region is restrained from being inclined inward in the width direction than the inner region, that is, the free end portion 3BL4 of the three-dimensional gather 3BL is restrained from being inclined inward toward the top sheet 9 side.

As described above, the diaper 1 of the present embodiment includes: an absorber 8 provided at a position including the crotch region 1B, the absorber 8 being capable of absorbing discharged liquid of the wearer; an outer body disposed on the non-skin surface side of the wearer with respect to the absorber 8; an adhesive portion 12, wherein the adhesive portion 12 adheres the absorber 8 to the outer body; and three-dimensional gathers 3BL, 3BR provided at the widthwise end of the absorbent body 8, formed so as to extend in the longitudinal direction and stand up toward the skin surface side. The adhesive portion 12 includes a narrow portion 12B having a width smaller than the absorber 8 in the width direction, and the narrow portion 12B is disposed so that the absorber 8 and the outer case are not adhered to each other at the outer side of the narrow portion 12B in the width direction.

The diaper 1 of the present embodiment is provided with a non-adhesive region 13. In the non-bonded region 13, the absorber 8 is not bonded to the outer body (more specifically, the inner cover sheet 5). Since the absorber 8 and the outer body are not bonded, the rigidity of the absorber 8 is relatively low at the portion corresponding to the non-bonded region 13. The diaper 1 is biased inward in the longitudinal direction by the three-dimensional gathers 3BL and 3BR when worn. As a result, a bending portion extending in the width direction is formed at a portion of the absorber 8 corresponding to the non-adhesive region 13 when worn, and the absorber 8 is bent to form a convex portion in a convex shape toward the skin surface side of the wearer starting from the bending portion. In order to improve the skin feel of the absorber, a diaper is known in which convex portions formed by embossing are provided on the skin surface side of the absorber, but the convex portions formed in the present embodiment are formed by bending the absorber 8 itself toward the skin surface side in the non-adhesive region 13. Therefore, the height difference from the base to the top is extremely large in the convex portion formed in the present embodiment, compared with the conventional convex portion formed by embossing. More specifically, the height difference from the base to the top is 10mm or more. The non-adhesive region 13 extends in the region corresponding to the urethral meatus. Therefore, the convex portion formed in the present embodiment is formed in the region corresponding to the urethral orifice.

Fig. 8A to 8C are diagrams illustrating the convex portions. Fig. 8A to 8C 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 wearer in a sitting position is indicated by a broken-line arrow. Fig. 8A is a diagram of an absorber of a known diaper in a state where no convex portion 17 is formed. In the case where the wearer takes a sitting position, a load caused by the weight of the wearer is applied to the crotch region of the diaper. In the present figure, a load portion W represents a portion to which a load is applied. 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 near the load site W and reaches the absorbent body. However, since a load is applied to the absorbent body, there are cases where the absorbent body cannot absorb the discharged liquid and swells, and the unabsorbed discharged liquid stays between the absorbent body and the skin surface of the wearer, and the wearing feeling is lowered. When the discharged liquid is in contact with the skin surface for a long period of time, skin surface problems such as rash are also liable to occur. In addition, the three-dimensional gathers are often crushed by the load at the load portion W. Therefore, unabsorbed discharged liquid may overflow in the three-dimensional gathers to cause lateral leakage.

Fig. 8B is a view showing the absorber 8 of the diaper 1 of the present embodiment. In the diaper 1 of the present embodiment, a non-adhesive region 13 is provided between the absorber 8 and the outer cover, and in this region, the rigidity of the absorber 8 is relatively low. Further, since the absorbent body 8 is biased inward in the longitudinal direction by the three-dimensional gathers 3BL and 3BR when worn, the absorbent body 8 is folded toward the skin surface side in the non-adhesive region 13, thereby forming 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.

Even when the wearer takes a sitting posture and applies a load to the absorber 8, the diaper 1 of the present embodiment can further increase the contact area between the absorber 8 and the discharged liquid U. 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. Therefore, the discharged liquid U does not come into contact with the skin surface of the wearer for a long period of time. Therefore, the wearing feeling of the diaper 1 is improved, and the occurrence of problems on the skin surface due to the discharged liquid U can be reduced.

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

When the absorbent body 8 is folded to form the convex portion 17, the absorbent body 8 approaches the skin surface at the top of the convex portion 17, and thus the three-dimensional gathers 3BL, 3BR reliably prevent lateral leakage of discharged liquid. However, since the absorber 8 is located on the non-skin surface side with respect to the base portion of the convex portion 17, the height of the standing portion of the three-dimensional gathers 3BL and 3BR is insufficient, and a gap may be generated between the standing portion 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 contacts the skin surface of the wearer in a planar manner, so that the occurrence of lateral leakage can be suppressed. In this way, the diaper 1 according to the present embodiment does not cause lateral leakage by forming the convex portion 17 by bending the absorber 8 in the longitudinal direction.

Fig. 8C is a diagram showing a more preferable configuration of the absorber 8 of the diaper 1 of 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. 3, the linear rubber 4F3 has a component in the longitudinal direction of the diaper 1 at a position outside 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, and even if the linear rubber 4F3 extends obliquely to the longitudinal direction, the linear rubber 4F3 has a longitudinal component. In fig. 8C, the component in the longitudinal direction is indicated by a dashed arrow P.

The non-adhesive region 13 is formed on the side of the front region 1F including the extension region of the linear 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 linear rubber 4F3 crosses the absorber 8. Therefore, the outer body in the non-adhesive region 13 is pulled toward the front body region 1F by the linear 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 can suppress the separation of the absorber 8 from the skin surface of the wearer by pulling the absorber 8 on the skin surface side of the non-adhesive region 13 toward the front body region 1F. Further, the non-adhesive region 13 is formed so as to include a position closer to the front body region 1F than the extension region of the linear rubber 4F3, and can be pulled toward the front body region 1F by the linear rubber 4F3, and the inner body including the absorber 8 can be pulled 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 at the crossing portion of the linear rubber 4F3, and therefore the absorber 8 is more folded. Therefore, the linear rubber 4F3 also has an effect of further enlarging the convex portion 17 to be obvious. By forming the large and distinct convex portion 17, the discharged liquid can be absorbed in a larger area. Further, since the convex portion 17 itself is pulled toward the front body region 1F by the influence of the longitudinal component generated by the linear rubber 4F3, the convex portion 17 is formed to be separated from the load portion W toward the front body region 1F. By the protrusion 17 being separated from the load portion W, the absorption capacity of the protrusion 17 is maintained even when the wearer takes a sitting posture, and the discharged liquid U can be absorbed promptly. By providing the crossing portion of the linear rubber 4F3 so as to overlap with the non-bonded region 13 in this way, 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.

Further, when the diaper 1 is used in combination with an inner pad, the convex portion 17 functions as an anti-slip member. In addition to the linear rubbers 4F2 and 4R2, the inner pad is pressed against the skin surface side by the convex portion 17 in the vicinity of the urethral orifice, so that urine leakage can be suppressed.

Here, a case where the wearer of the diaper 1 is female will be described. When the diaper 1 is worn by a female, the urethral orifice is designed to be located substantially at the crossing portion of the linear rubber 4F 3. Thus, the crossing portion of the linear rubber 4F3 includes an area corresponding to the urethral orifice of the female wearer. As described above, the outer body in the non-adhesive region 13 and the inner body including the absorber 8 having the convex portions 17 formed thereon are pulled up toward the front region 1F by the linear rubber 4F3, so that the absorber 8 is brought close to the urethral orifice of the female, and urine discharged from the urethral orifice is easily immersed in the absorber 8. Since the female urethral orifice is located slightly on the crotch side of the convex portion 17, the discharged liquid flows under the base portion 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 space approaches the load portion W, and the expansion of the absorber may be hindered by the load, and the absorption may take time. In the diaper 1 of the present embodiment, since the convex portions 17 can absorb the discharged liquid in addition to the flat portions of the absorber 8, the absorption area of the discharged liquid becomes larger and the absorption efficiency of the discharged liquid increases 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. When the diaper 1 is worn by a male, the crossing portion of the linear rubber 4F3 is designed to be positioned on the crotch side of the penis of the male (male genitals). In other words, the penis of the male is positioned closer to the front region 1F than the crossing portion of the linear rubber 4F 3. Thus, the crossing portion of the linear rubber 4F3 is located on the crotch side of the region corresponding to the penis. The diaper 1 can form a space for holding the penis in a region corresponding to the penis by pulling the outer body and the inner body including the absorber 8 in the non-adhesive region 13 toward the front body region 1F by the linear rubber 4F3 to press the absorber 8 against the rear side of the testis. 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.

When the diaper 1 is worn by a male, the testes are designed to be located substantially at the crossing portion of the linear rubber 4F 3. Therefore, the crossing portion of the linear rubber 4F3 includes a region corresponding to the testis of the male wearer. The absorber 8 also swells with the swelling of the testis, but the testis can be held by lifting the absorber 8 with the linear 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 position of the crossing portion of the linear rubber 4F3 relative to the testis can be moved, and the absorber 8 at the portion where the testis is located can be lifted by the linear rubber 4F3, thereby holding the testis.

As described above, the diaper 1 of the present embodiment can maintain the position of the male genitals even when the wearer is a male, and the urethral orifice is positioned in the vicinity of the protruding end portion of the protruding portion 17. Here, in the case where the wearer is a male, the flow direction of the discharged liquid depends on 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, or 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 of the present embodiment can efficiently absorb the discharged liquid by the same effect as in the case where the wearer is a female, and can suppress the decrease in wearing feeling and the roughness of the 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 crotch side, which is the load portion W and has a low absorption capacity when a load is applied thereto. Further, since the front body 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 wearing feeling or rough skin.

The diaper 1 of the present embodiment can suppress the separation of the absorber 8 from the skin surface of the wearer by pulling the absorber 8 on the skin surface side of the non-adhesive region 13 toward the front body region 1F. Further, by providing the convex portion 17 on the absorber side of the non-adhesive region 13 and pulling the absorber 8 in the vicinity of the convex portion 17 toward the front body region 1F by the urging force of the linear rubber 4F3, the absorption capacity is not reduced even when a load is applied to the absorber 8, and a comfortable diaper 1 can be provided. The effect is not dependent on the sex of the wearer. The raised ends of the three-dimensional gathers 3BL and 3BR serving as leakage preventing walls are positioned on the outer side in the width direction of the end portion of the absorbent core 8c in the convex portion 17, and have lower rigidity than the extension region of the absorbent core 8c, and therefore are easily bent in accordance with the bending of the convex portion 17 and are brought 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 that contact the skin surface of the wearer in a planar manner, even if the convex portions 17 are formed in the absorber 8, the occurrence of lateral leakage can be suppressed.

The longitudinal end portion of the absorber 8 has a dome-shaped structure for suppressing abdomen leakage and back leakage of discharged liquid. Since the movement of the discharged liquid reaching the longitudinal end portion side of the absorber 8 toward the longitudinal end portion side is blocked, a diaper in which leakage is less likely to occur can be provided.

The adhesive HM is not applied between the back sheet 6 and the exterior body at the longitudinal end of the end sheet portion 8 e. As shown in fig. 4, the adhesive HM may not be applied between the entire 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.

Part of the linear rubbers 4F2, 4R2 extends in the outer body of the region corresponding to the end piece 8 e. The linear rubbers 4F2, 4R2 are attached to the outer body 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 by the biasing force of the linear rubbers 4F2 and 4R2, but does not contract like the outer case, and floats up to the skin surface side.

When the diaper 1 is worn, the linear rubbers 4F2 and 4R2 extend, and the end piece 8e is pressed against the skin surface side of the wearer. Therefore, the longitudinal end of the end piece 8e contacts the skin surface in a planar manner, and functions as a leakage preventing wall. The diaper 1 of the present embodiment effectively prevents the movement of discharged liquid to the longitudinal end side, and suppresses abdomen leakage and back leakage.

Further, a part of the outer side of the absorber 8 in the longitudinal direction overlaps with the linear rubbers 4F2, 4R 2. The linear rubbers 4F2 and 4R2 contract the absorber 8 inward in the width direction within the range where the adhesive HM is applied. The absorber 8 has an absorbent core 8c. In any of the case where the absorbent core 8c is composed of the short fibers and the SAP, the case where the absorbent core 8c is composed of only the short fibers, and the case where the absorbent core 8c is composed of only the SAP, the absorbent core 8c has higher rigidity than other components of the diaper 1. In the extension of the absorbent core 8c, the widthwise central portion of the absorbent body 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 moving in the longitudinal direction can be suppressed until the discharged liquid reaches the longitudinal direction end portion of the absorber 8. The top sheet 9 and the core wrap sheet 7 have liquid permeability, and the absorbent core 8c has liquid absorbency. Therefore, the absorber 8 can absorb the discharged liquid whose flow is suppressed in the vicinity of the longitudinal end portion, and can prevent the discharged liquid from moving to the longitudinal end portion.

On the other hand, by bending the absorbent core 8c toward the skin surface side, a space may be generated between the non-skin surface side of the absorber 8 and the backsheet 6. The case where the discharged liquid flows in the space and reaches the end in the longitudinal direction can be considered. In the diaper 1 of the present embodiment, the end piece portion 8e is provided on the 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 further flow is suppressed, 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 occur in the absorber 8 due to the biasing force, external pressure, wearer's body shape, or the like of the linear rubbers 4F2, 4R2, and the like, and may not necessarily be in a dome shape bent toward the skin surface side. In such a case, although the discharged liquid may reach the longitudinal end portion through the gather portion, the longitudinal end portion of the end portion sheet portion 8e may be raised toward the skin surface side of the wearer and may be brought into contact with the skin of the wearer so as to form a leakage preventing wall, whereby leakage of the discharged liquid from the longitudinal end portion of the absorber 8 can be suppressed.

Fig. 9 is a conceptual view of the vicinity of the absorber end sheet portion joined to the outer body. The linear rubbers 4F2, 4R2 extending in the width direction are provided at predetermined intervals in the longitudinal direction on the outer body including the inner cover sheet 5 near the longitudinal end portions of the absorber 8. By contracting the linear rubbers 4F2, 4R2 inward in the width direction, fine, pleated irregularities are formed between the respective linear rubbers constituting the linear rubbers 4F2, 4R 2. The irregularities function as a cushion material, and the linear rubbers 4F2 and 4R2 are prevented from giving a sense of incongruity to the skin surface of the wearer.

The absorber 8 overlaps the outer cover in the thickness direction and overlaps a part of the linear rubbers 4F2 and 4R2 in the vicinity of the longitudinal end portions thereof. The absorber 8 is joined to the outer body in the extending region of the absorbent core 8c, and overlaps with a part of the linear rubbers 4F2, 4R2 also at a part thereof. Since the absorbent core 8c has rigidity, the linear rubbers 4F2 and 4R2 deform inward in the width direction due to the biasing force, but no pleated irregularities are formed at least on the skin surface side thereof. In the extension region of the absorbent core 8c, the absorber 8 is folded inward in the width direction, and the widthwise central portion thereof is dome-shaped and swelled toward the skin surface side so as to come into contact with the skin surface of the wearer. According to 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 moving 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. The sheet forming these end sheet portions 8e has no liquid absorption, but is less rigid than the absorbent core 8c having high rigidity, and therefore is easily folded. The end piece 8e overlaps with a part of the linear rubbers 4F2, 4R2 in the thickness direction. However, the entire end piece 8e or at least the longitudinal end of the end piece 8e is not joined to the outer body, and the force received by the end piece 8e from the linear rubbers 4F2, 4R2 is reduced at least at the longitudinal end thereof.

Although a plurality of pleats are formed in the end portion sheet portion 8e, each pleat has a width wider than that of the pleat-like irregularities formed in the outer body, and a depth shallower than that of the pleat-like irregularities formed in the outer body. 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 pleats become so-called horns that are narrower on the crotch region 1B side in the width direction and wider on the longitudinal end portion in the width direction.

Since the pleats are shallow at the longitudinal ends of the end sheet portions 8e and are wide in the width direction, the contact ratio between the longitudinal ends of the end sheet portions 8e and the skin surface of the wearer increases. Therefore, 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. 10 is a view showing the longitudinal end portions of the absorbent body including the three-dimensional gathers. In the present figure, the front region 1F side is shown, but the structure of the absorber 8 is the same on both sides in the longitudinal direction, and therefore, the structure is also the same for the rear region 1R side. Side panels 10L, 10R are overlapped at the widthwise end portions of the absorber 8. The side sheets 10L and 10R are disposed on the inner side in the width direction, and stand up toward the skin surface side of the wearer by the urging force of the linear rubber extending in the longitudinal direction, thereby forming three-dimensional gathers 3BL and 3BR functioning as leakage preventing walls for preventing discharged liquid from leaking to the outer side in the width direction.

The three-dimensional gathers 3BL, 3BR are joined to the longitudinal end portions of the absorbent body 8 by heat fusion or the like at the longitudinal end portions. By joining the three-dimensional gathers 3BL, 3BR to both longitudinal ends 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 overlap over the entire extension area 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 making the end portion 8e stiff in the width direction, the entire end portion 8e is easily bent toward the skin surface side. Further, by making the end portion 8e stiff in the width direction, the force indirectly applied by the linear rubbers 4F2, 4R2 to bend the end portion 8e inward in the width direction can be more easily counteracted. According to this configuration, the end portion of the end portion piece 8e is not bent or is extremely gentle in the longitudinal direction, and even if wrinkles are formed, the depth of the wrinkles is reduced, and the size of the wrinkles is also increased in the width direction. As a result, the longitudinal end of the end piece 8e is in contact with the skin surface of the wearer with 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 overlapping the linear 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 line C, the absorber 8 is curved toward the non-skin surface side, and therefore a space capable of storing discharged liquid can be formed. The absorbent core 8c extends in this space, 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.

The diaper 1 of the present embodiment is not limited to the longitudinal direction, and leakage of discharged liquid can be suppressed in the width direction. In fig. 7, 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 is formed with the convex portion 17 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 region R3, the folding 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-back 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 absorber 8 bulges, and therefore, a difference in height of the three-dimensional gathers 3BL, 3BR occurs in the front-rear regions of the convex region R3 and the convex region R3. In this way, the three-dimensional gathers 3BL and 3BR may strongly contact the skin in the convex region R3, and the three-dimensional gathers 3BL and 3BR may easily separate from the skin at the front and rear positions of the convex region R3. In contrast, in the diaper 1 of the present embodiment, since the fold-back lines 10L2, 10R2 (standing lines) are provided in the convex region R3 at the positions where the absorbent core 8c is not present and the rigidity of the absorbent body 8 is low, the fold-back lines 10L2, 10R2 can be caught on the non-skin surface side, and the occurrence of the difference in height between the three-dimensional gathers 3BL, 3BR in the front and rear regions of the convex region R3 and the convex region R3 is suppressed. This can suppress the separation of the three-dimensional gathers 3BL and 3BR from the skin, and can appropriately suppress the lateral leakage of the discharged material.

Further, the linear rubbers 10L1, 10R1 of the plurality of linear rubbers 10L1, 10R1 disposed on the outer side in the width direction of the diaper 1 have lower elongation than the linear 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 linear rubber is a value obtained by dividing the length (cut length) of the linear rubber when the linear rubber is incorporated into a diaper by the natural length of the linear rubber and expressing the ratio in percentage. The linear rubbers 10L1 and 10R1 are assembled in an extended state in the diaper 1 so as to exert a contraction force. Therefore, the draft ratio becomes a value of more than 100%. In the diaper 1 of the present embodiment, the linear rubbers 10L1 and 10R1 disposed on the outer side in the width direction have lower elongation than the linear rubbers 10L1 and 10R1 disposed on the inner side in the width direction, so that the inner regions are contracted in the side sheets 10L and 10R than the outer regions, and the outer regions are restrained from falling inward in the width direction than the inner regions, that is, the free end portions 3BL4 and 3BR4 of the three-dimensional gathers 3BL and 3BR are restrained from falling toward the top sheet 9 side.

Fig. 11 is a cross-sectional view of the diaper 1 taken along the line CC 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 construction of the absorber 8 is illustrated in simplified form. As described above, the diaper 1 of the present embodiment includes: an absorber 8 provided at a position including the crotch region 1B, the absorber 8 being capable of absorbing discharged liquid of the wearer; an outer body disposed on the non-skin surface side of the wearer with respect to the absorber 8; and an adhesive portion 12, wherein the adhesive portion 12 adheres the absorber 8 to the outer body. In the diaper 1, the end portion in the width direction of the absorber 8 is non-bonded to the outer case in the end portion region in the longitudinal direction of the absorber 8. As a result, as shown in fig. 11, the absorber 8 can be folded so that the widthwise end portion in the longitudinal end region is separated from the outer body, and can be 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. Therefore, the diaper 1 can form a space between the side of the abdomen and the back of the wearer and the skin surface by standing the widthwise end of the absorber 8 in the lengthwise end region 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, since the skin surface on the abdomen side and the back side of the wearer is flat compared with the skin surface on the crotch side, if the longitudinal end regions of the absorber 8 are also flat and the space is not present, the discharged material may leak along the skin to the outside of the absorbent article when the discharged material intrudes into the abdomen side and the back side. In contrast, in the diaper 1, by standing the widthwise end portion toward the skin surface side in the lengthwise end region of the absorber 8, a space is formed between the abdomen side, the back side, and the skin surface of the wearer, and the discharged material can be accommodated in the space. As a result, according to the diaper 1 of the present embodiment, lateral leakage of discharged material on the abdomen side and the back side of the wearer can be suppressed.

The diaper 1 of the present embodiment includes three-dimensional gathers 3BL and 3BR provided at the widthwise end portions of the absorbent body 8, and formed to extend in the longitudinal direction and 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 absorbent body 8, the three-dimensional gathers 3BL, 3BR further stand up from the widthwise end of the absorbent body 8 to the skin surface side in a state where the widthwise end of the absorbent body 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 lateral leakage of discharged material can be more appropriately suppressed.

The three-dimensional gathers 3BL and 3BR of the present embodiment are joined to the top sheet 9, and rise up to the skin surface side from the fold-back lines 10L2 and 10R2 which are joining ends with the top sheet 9. The three-dimensional pleats 3BL, 3BR have: base end side pieces 3BL1, 3BR1, the base end side pieces 3BL1, 3BR1 extending inward in the width direction from the joined end portions with the top sheet 9; and a base end adhesive portion 31, wherein the base end adhesive portion 31 fixes both ends of the base end side pieces 3BL1, 3BR1 in the longitudinal direction to the top sheet 9, respectively, and linear rubbers 10L1A, 10R1A extending in the longitudinal direction are provided in the base end side pieces 3BL1, 3BR1 in an elongated state. In the diaper 1 of the present embodiment, the widthwise end portion of the absorber 8 is not bonded to the outer body 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 in the non-fixed range R1 in which the base end side panels 3BL1, 3BR1 can stand up, the widthwise end portions of the absorbent body 8 can stand up toward the skin surface side. As a result, by the tension of the linear rubber 10L1A, the base end portion side pieces 3BL1, 3BR1 stand up toward the skin surface side while facing the inner side in the width direction, and thereby, as shown in fig. 11, a space can be formed between the end portion in the width direction of the standing absorber 8 and the standing base end portion side pieces 3BL1, 3BR 1. Thus, even when the discharged material that has entered the abdomen side or the back side reaches the widthwise end portion of the absorber 8, the discharged material that has entered the space does not pass over the base end portion side panels 3BL1, 3BR1, and lateral leakage of the discharged material can be suppressed.

In the diaper 1 of the present embodiment, the widthwise end portion of the absorber 8 and the outer cover are non-bonded 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, lateral leakage of the discharged material can be more appropriately suppressed.

The three-dimensional pleats 3BL and 3BR of the present embodiment include: the folded-back portions 3BL2, 3BR2, which are formed on the widthwise inner side edges of the base end portion side pieces 3BL1, 3BR1, and which are folded from the base end portion side pieces 3BL1, 3BR1 toward the skin surface side and outward in the widthwise direction; the free end side panels 3BL3, 3BR3, the free end side panels 3BL3, 3BR3 extending outward in the width direction from the folded-back portions 3BL2, 3BR 2; a free end adhesive portion 32, wherein the free end adhesive portion 32 fixes both ends of the free end side pieces 3BL3, 3BR3 in the longitudinal direction to the base end side pieces 3BL1, 3BR1, respectively; and free end portions 3BL4, 3BR4, wherein the free end portions 3BL4, 3BR4 are provided at the tips of the free end portion side pieces 3BL3, 3BR3, and linear rubbers 10L1B, 10R1B extending in the longitudinal direction are provided in an elongated state so as to overlap with the areas where the widthwise end portions of the absorber 8 and the outer body are not bonded to each other in the free end portion side pieces 3BL3, 3BR3. 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 folded-back portions 3BL2, 3BR2 to the free end portions 3BL4, 3BR4, and therefore the three-dimensional gathers 3BL, 3BR 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. In the diaper 1 of the embodiment, the linear rubbers 10L1B and 10R1B are provided in an elongated state so as to overlap with the widthwise end portion of the absorber 8 that can stand up toward the skin surface side, and therefore, the contraction force of the linear rubbers 10L1B and 10R1B acts so as to pull the widthwise end portion of the absorber 8. As a result, the widthwise end portions of the absorber 8 can be more reliably raised, and lateral leakage of discharged material can be more appropriately suppressed. The three-dimensional gathers 3BL, 3BR may not have the free end side panels 3BL3, 3BR3.

In the diaper 1 of the embodiment, the absorbent body 8 is bent so as to be convex toward the skin surface side, so that the convex portion 17 extending in the width direction is formed so as to overlap the inner side in the width direction of the base end portion side sheet 3BL1, 3BR1 from the non-skin surface side, and the joined end portion of the base end portion side sheet 3BL1, 3BR1 and the top sheet 9 is located at the outer side in the width direction than the absorbent core 8c of the absorbent body 8 in the range (convex range R3) in the length direction in which the convex portion 17 is formed. In this way, in the convex region R3, the folded 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, and therefore the folded lines 10L2, 10R2 can sink to the non-skin surface side, and the occurrence of a difference in height of the three-dimensional gathers 3BL, 3BR in the convex region R3 and the front-rear region of the convex region R3 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 suppress the separation of the three-dimensional gathers 3BL and 3BR from the skin, and can appropriately suppress the lateral leakage of the discharged material.

Fig. 12 is a cross-sectional view schematically showing a state in which the side flap portions 14L, 14R of the diaper 1 of the embodiment are raised. Fig. 12 corresponds to a cross-sectional view taken along line AA of fig. 3, and shows the structure of the absorber 8 in a simplified manner. As described above, since the linear rubbers 4F3 and 4R3 extending in the width direction are provided in the outer body so as to overlap the side wing portions 14 in an extended state, the side wing portions 14L and 14R are biased toward the skin surface side by contraction of the linear rubbers 4F3 and 4R 3. As a result, the side wing portions 14L, 14R stand up toward the skin surface side as shown in fig. 12. 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 of the present embodiment configured as described above, the side flap portions 14 not including the absorbent core 8c are formed in the crotch region 1B, so that the side flap portions 14 can be raised toward the skin surface side of the wearer. In addition, by providing at least a part of the folding lines 10L2, 10R2, which are the base end portions of the three-dimensional gathers 3BL, 3BR, at positions overlapping the side flap portions 14, as shown in fig. 12, the three-dimensional gathers 3BL, 3BR can be further raised from the widthwise end portions of the side flap portions 14 in a state where the side flap portions 14 are raised toward the skin surface side and come close to 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 lateral leakage of discharged material can be suppressed.

In the diaper 1 of 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), whereby the width of the side flap portion 14 is widened from the rear body region 1R side toward the longitudinal center side (the crotch region 1B side). That is, the wing portion 14 is formed to be wide at the center in the longitudinal direction. Therefore, 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 linear rubbers 4F3, 4R3 can be made high in the vicinity of the center in the longitudinal direction of the crotch region 1B. As a result, the side flap 14 can be brought close to the skin even in the vicinity of the center in the longitudinal direction where the wearer's skin 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, by increasing the rising height of the side flap 14 in the vicinity of the longitudinal center of the crotch region 1B to ensure a large urine storage space, the rising height of the side flap 14 is reduced toward the rear body region 1R, and the three-dimensional gathers 3BL and 3BR are naturally brought into contact with the skin surface on the rear body region 1R along the skin surface on the back side which is flat compared with the skin surface on the crotch side. Thus, for example, even when the wearer sleeps in a side-lying position or the like and discharges urine with the diaper 1 facing the side, the urine can be stored in the space, and even if urine overflows from the space to the back side, the urine can be naturally spread to the back side and absorbed while being suppressed by the three-dimensional wrinkles 3BL and 3 BR. The width of the side wing 14 may be narrowed from at least one side in the longitudinal direction toward the crotch region 1B, 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 of the present embodiment includes: a top sheet 9, wherein the top sheet 9 is arranged on the skin surface side of the absorber 8 and has a water permeable area; and water impermeable side sheets 10L, 10R, wherein the side sheets 10L, 10R are arranged on the skin surface side of the top sheet 9 for forming the three-dimensional gathers 3BL, 3 BR. The three-dimensional gathers 3BL and 3BR are joined to the top sheet 9, and rise up to the skin surface side from the fold-back lines 10L2 and 10R2 which are joining ends with the top sheet 9. The three-dimensional pleats 3BL, 3BR have: base end side pieces 3BL1, 3BR1, the base end side pieces 3BL1, 3BR1 extending inward in the width direction from the joined end portions with the top sheet 9; a base end adhesive portion 31, wherein the base end adhesive portion 31 fixes both ends of the base end side sheets 3BL1, 3BR1 in the longitudinal direction to the top sheet 9, respectively; the folded portions 3BL2, 3BR2, which are formed on the widthwise inner side edges of the base end portion side pieces 3BL1, 3BR1, and which are folded from the base end portion side pieces 3BL1, 3BR1 to the skin surface side and to the widthwise outer side; the free end side panels 3BL3, 3BR3, the free end side panels 3BL3, 3BR3 extending outward in the width direction from the folded-back portions 3BL2, 3BR 2; a free end adhesive portion 32, wherein the free end adhesive portion 32 fixes both ends of the free end side pieces 3BL3, 3BR3 in the longitudinal direction to the base end side pieces 3BL1, 3BR1, respectively; and free end portions 3BL4, 3BR4, wherein the free end portions 3BL4, 3BR4 are provided at the tips of the free end portion side pieces 3BL3, 3BR3, linear rubbers 10L1A, 10R1A extending in the longitudinal direction are provided in an elongated state on the base end portion side pieces 3BL1, 3BR1, and linear rubbers 10L1B, 10R1B extending in the longitudinal direction are provided in an elongated state on the free end portion side pieces 3BL3, 3BR 3.

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 simply, the three-dimensional gathers 3BL, 3BR have an inside-outside folded shape folded outward at the front end folded inward from the base end portion. The free end side panels 3BL3, 3BR3 can be brought into contact with the skin of the wearer in the range from the folded-back portions 3BL2, 3BR2 to the free end portions 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 non-bonded. Therefore, 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, 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 case may occur in which the interval between the three-dimensional gathers 3BL, 3BR becomes narrower in planar view, or a case 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 case in which the widthwise end portion of the absorbent body 8, the three-dimensional gathers 3BL, 3BR are covered on the absorbent core 8c. When such a situation occurs, since the passage width for the discharge liquid of the wearer to reach the absorber 8 from the discharge opening (urethral opening, anus) becomes narrow, the discharge liquid may collide with the side wing 14 and the three-dimensional gathers 3BL, 3BR, and the discharge liquid may not reach the absorber 8. That is, the side flaps 14 and the three-dimensional gathers 3BL and 3BR may prevent the discharged material from reaching the absorbent core 8c. As a result, the discharged liquid may leak out of the absorbent article. Further, even if the discharged material can reach the absorbent core 8c, it cannot reach the widthwise center, and as a result, the absorption position is deviated to either the right or left, and as a result, leakage may occur.

In contrast, in the diaper 1 of the present embodiment, in the crotch region 1B, the absorber 8 is convexly folded toward the skin surface side of the wearer to form the convex portion 17 extending in the width direction, and the convex portion 17 is formed at least over the region between 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 directed inward in the width direction. In the diaper 1 of 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, the passage width for the discharged liquid of the wearer to reach the absorbent core 8c from the discharge opening can be ensured, and the situation in which the discharged liquid cannot reach the absorbent body 8 or the situation in which the absorption position of the discharged liquid in the absorbent core 8c is shifted from the widthwise center can be suppressed. As a result, according to the diaper 1, lateral leakage of discharged material can be more appropriately 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. 12, the convex portion 17 supports the side flap portion 14 from the inner side in the width direction, whereby the side flap portion 14 can be restrained from being bent from the base end portion so as to incline (topple) to the inner side in the width direction while standing up the side flap portion 14 toward the skin surface side, and the base end portion of the side flap portion 14 can be restrained from being recessed to the inner side in the width direction. That is, the side wing 14 can be prevented from being deformed inward in the width direction, and the side wing 14 can be brought into a state of protruding outward 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 lateral leakage of the discharged material can be more appropriately suppressed.

< Embodiment 2 >

Fig. 13 is a developed view of the diaper of embodiment 2. In the following embodiments, in the drawings, the same reference numerals are given to constituent elements having substantially the same functions as those in embodiment 1, and the description thereof is omitted. In embodiment 2, a plurality of (e.g., 3) linear rubbers 4F7 (an example of the "2 nd stretchable member" of the present disclosure) are provided in the center in the width direction in a stretched state in a state of being stretched in the longitudinal direction from the front body region 1F to the crotch region 1B between the back sheet 6 and the core wrap sheet 7. A linear rubber cover sheet, not shown, is disposed on the skin surface side of the linear rubber 4F 7. The linear rubber cover sheet is adhered to the back sheet 6 while covering the linear rubber 4F7 from the skin surface side. The linear rubber cover sheet is disposed between the linear rubber 4F7 and the absorber 8. The linear rubber cover sheet is not bonded to the core wrap sheet 7 of the absorber 8. The linear rubber 4F7 is disposed between the absorber 8 and the back sheet 6, and is bonded to the back sheet 6 and is non-bonded to the absorber 8. This prevents the elastic force (contraction force) of the linear rubber 4F7 from acting excessively on the absorber 8. In addition, when a band-shaped stretchable member is used instead of the linear rubber 4F7, the stretchable member and the core wrap 7 can be made non-adhesive so that the linear rubber cover sheet is not provided.

The linear rubber 4F7 is provided in a state extending in the longitudinal direction from the front body region 1F to the crotch region 1B at a widthwise central portion between the back sheet 6 and the linear rubber cover sheet. The end portion side of the linear rubber 4F7 on the crotch region 1B side corresponds to the anus side of the wearer when the diaper 1 is worn by the wearer. On the other hand, the end portion of the linear rubber 4F7 on the front body region 1F side is located closer to the crotch region 1B than the arrangement region of the linear rubber 4F 2.

The portion where the linear rubber 4F7 is provided includes a non-bonded region 13 where the absorber 8 and the inner cover sheet 5 are not bonded. Therefore, by pressing the absorber 8 in the direction of the urethral orifice, the non-adhesive region 13 between the absorber 8 and the inner cover sheet 5 expands in the thickness direction. By expanding the non-adhesive region 13, the air permeability due to the non-adhesive region 13 can be further improved.

The convex portion 17 is basically formed by bending the absorbent body 8 having low rigidity in the non-adhesive region 13 toward the skin surface side by the urging force of the three-dimensional gathers 3BL, 3 BR. Further, the linear rubber 4F7 is provided on the back sheet 6 so as to include the non-adhesive region 13 in the extension region thereof, whereby the force of contraction in the longitudinal direction is transmitted to the absorber 8. Therefore, the protruding portion 17 can be more significantly raised by the linear rubber 4F7 and brought into contact with the skin surface of the wearer. In this way, in embodiment 2, the absorber 8 is folded by the urging force of the linear rubber 4F7 also in the non-adhesive region 13, and the folding of the convex portions 17 can be increased, so that a diaper having a higher absorption effect, a good wearing feeling, and being less likely to cause problems on the skin surface of the wearer can be provided.

< Embodiment 3>

Fig. 14 is a developed view of the diaper of embodiment 3. In the present embodiment, the absorber 8 is linearly pressed. In fig. 14, the squeeze portion is shown as a line 18. In the crotch region 1B, two lines 18 are provided on the left and right sides in the width direction near the widthwise central portion of the absorber 8, and the lines 18 extend along the longitudinal direction of the diaper 1. The wire 18 has a bending position in the non-adhesive region 13, and is bent outward in the width direction from the bending position provided in the non-adhesive region 13 where the linear rubber 4F3 overlaps in the thickness direction toward the end portion on the front body region 1F side. Such pressing of the absorber 8 is achieved by embossing with a roller, for example. The thread 18 may be formed not only by a method based on extrusion, but also by locally increasing the order of pulp, or by forming a large amount of laminate material, or by applying a hot-melt adhesive, and providing a high-rigidity portion to the absorbent body 8. Line 18 is an example of a trough in the present disclosure.

In addition, in the region corresponding to the anus of the wearer on the rear body region 1R side of the crotch region 1B, the string 18 is extended in the width direction, and the two strings 18 are connected. Since the wire 18 has higher rigidity than other regions, the absorber 8 can be prevented from being deformed in the width direction. Therefore, the diaper 1 can prevent the absorber 8 from getting caught in the buttocks of the wearer, and can suppress the decrease in wearing feeling.

In the range where the wire 18 extends in the longitudinal direction, the rigidity of the absorber is reinforced by the wire 18, and the absorber 8 is hard to bend in the longitudinal direction. On the other hand, in a range where the wire 18 is bent to be bent to the outside in the width direction, the rigidity of the wire 18 is relatively weakened. In addition, in the non-adhesive region 13, the rigidity of the absorbent body 8 is weakened by not being adhered to the outer body, and the convex portion 17 is formed by bending the side of the skin surface by the urging force of the three-dimensional gathers 3BL and 3 BR. Since the rigidity of the absorber 8 is lowered at the bending position of the wire 18, the bending position of the wire 18 functions as a starting point for forming the convex portion 17. The non-adhesive region 13 has a constant width in the longitudinal direction, but the position of the convex portion 17 can be defined by disposing a bent portion of the wire 18 in the non-adhesive region 13.

In the diaper 1 according to embodiment 3, the position where the convex portion 17 is formed can be defined in the longitudinal direction of the non-bonded region 13 by providing the line 18 to the absorber 8. Therefore, the convex portion 17 can be formed at the most appropriate position, and a sufficient absorbing effect can be obtained even when a load is applied, so that a diaper which does not cause discomfort to the wearer and does not cause skin problems can be provided.

< Embodiment 4 >

Fig. 15 is a developed view of the diaper of embodiment 4. In embodiment 4, as in embodiment 2, a plurality of linear rubbers 4F7 are provided between the back sheet 6 and the core wrap sheet 7 in an elongated state in the longitudinal direction at the widthwise central portion. The absorber 8 is extruded linearly as in embodiment 3, and the extruded portion is shown as a line 18. The wire 18 is formed so as to surround the linear rubber 4F7. The method of forming the wire 18 is not limited to the extrusion method, and may be set by increasing the order of pulp, or by stacking a large number of materials, or by applying a hot melt adhesive, as in embodiment 3.

In the diaper 1, a non-adhesive region 13 where the rigidity of the absorber 8 is weakened is provided, and the convex portion 17 is formed by applying a force of the three-dimensional gathers 3BL, 3BR to the non-adhesive region 13. Further, the convex portion is lifted up so as to be appropriately abutted against the lower abdomen of the wearer by the urging force of the linear rubber 4F3, whereby the absorption effect can be improved, the wearing feeling can be improved, and skin problems can be prevented. In addition, in the diaper 1 according to embodiment 4, the rising of the protruding portion 17 can be further increased by providing the linear rubber 4F 7. Further, the rigidity of the absorber 8 can be enhanced by the wire 18, and the formation of the convex portion 17 at an unexpected portion can be suppressed, and the bending position is set at the wire 18 to change the rigidity of the absorber 8, and the bending position becomes the starting point of the formation of the convex portion 17. Therefore, in the diaper of embodiment 4, the protruding portion 17 having a high effect can be formed, which is more preferable.

The present embodiment has been described above, but the content of the present invention is not limited to the above embodiment. The convex portion 17 may be formed on the rear body region 1R side. The convex portion 17 formed in the rear body region 1R can suppress movement of feces, and can make leakage from the diaper less likely to occur even when soft feces are generated. In addition, if the convex portion 17 is present on the rear body region 1R side, even if urine flows toward the back side rapidly on the surface of the absorber 8, the flow can be suppressed until reaching the end of the rear body region 1R, and the possibility of causing back leakage can be suppressed. As described above, since the convex portion 17 is produced as a composite effect by properly adjusting the structure of the diaper, even when the convex portion 17 is provided on the rear body region 1R side, the structure can be properly adjusted, and the convex portion 17 having an arbitrary size can be formed at an arbitrary position.

The embodiments disclosed above can be combined separately.

Claims

1. An absorbent article (1), wherein 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 are sequentially arranged in the longitudinal direction of the absorbent article (1), 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 (1) comprises:

an absorber (8), wherein the absorber (8) is arranged at a position containing the crotch area (1B) and can absorb the discharged liquid of the wearer;

An outer body (4, 5), wherein the outer body (4, 5) is arranged at a position closer to the non-skin surface side of the wearer than the absorber (8); and

An adhesive part (12), wherein the adhesive part (12) is configured to adhere the absorber (8) to the outer body (4, 5),

The absorber (8) has a bending part extending in the width direction at the front body region (1F) side in a region corresponding to the urethral orifice of the wearer when the absorber is worn,

The absorber (8) is formed with a convex portion (17) that is convexly curved toward the skin surface side along the curved portion.

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

The height from the base to the top of the convex part (17) is more than 10 mm.

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

The absorbent body (8) has a pad-shaped absorbent core (8 c) capable of absorbing the discharged liquid of the wearer and a core wrap sheet (7) covering the absorbent core (8 c),

The end of the absorber (8) in the width direction is provided with leakage preventing walls (3 BL, 3 BR) which extend in the length direction and are formed to stand up to the skin surface side of the wearer,

The rising ends of the leakage preventing walls (3 BL, 3 BR) extending in the longitudinal direction are located further outside in the width direction than the widthwise ends of the absorbent core (8 c) at the convex portions (17).

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

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

A rising portion rising from the rising end toward the skin surface side when worn; and

A skin contact portion which is disposed on the skin surface side of the rising portion, has a plurality of elastic members extending in the longitudinal direction, and contacts the skin surface of the wearer,

The leakage preventing walls (3 BL, 3 BR) are raised from the raised ends toward the skin surface side, bent at the boundary with the skin contact portion, and raised toward the outside in the width direction at the skin contact portion.

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

The adhesive part (12) is not arranged near the convex part (17),

The vicinity of the protruding part (17) is a non-bonded region (13) where the absorber (8) and the outer case (4, 5) are not bonded.

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

A1 st expansion member having a component for urging the outer bodies (4, 5) in the longitudinal direction is disposed in an elongated state in the non-adhesive region of the outer bodies (4, 5).

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

The 1 st stretchable member is disposed along leg-surrounding openings (2L, 2R) of the outer body (4, 5) so as to traverse the crotch region (1B) in the width direction,

The non-adhesive region (13) is provided in a region where the 1 st stretchable member overlaps the absorber (8).

8. The absorbent article (1) according to claim 7, characterized in that,

The non-adhesive region (13) is provided so as to include the region corresponding to the urethral orifice on the side of the anterior region (1F).

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

A2 nd stretchable member having a component for biasing the non-adhesive region (13) of the absorber (8) in the longitudinal direction is disposed in an elongated state in the absorber (8).

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

The skin surface side of the absorber (8) is provided with a groove part extending along the length direction,

The groove portion is bent outward in the width direction in the region corresponding to the urethral orifice.

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

The absorber (8) is provided with:

a pad-shaped absorbent core (8 c), said absorbent core (8 c) being capable of absorbing the discharge liquid of the wearer; and

A non-water-permeable back sheet (6), wherein the back sheet (6) is disposed on the non-skin surface side of the absorbent core (8 c) and is longer than the absorbent core (8 c) in the longitudinal direction,

An end sheet portion (8 e) including the back sheet (6) is provided at the longitudinal end of the absorber (8) and at a position outside the longitudinal end of the absorbent core (8 c),

At least the longitudinal end side of the end piece (8 e) is not joined to the outer case (4, 5).

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

In the end region of the absorber (8) in the longitudinal direction, the end of the absorber (8) in the width direction is non-bonded to the outer body (4, 5).

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

The absorbent article (1) further comprises:

A top sheet (9), wherein the top sheet (9) is arranged on the skin surface side of the wearer relative to the absorber (8) and has a water permeable area; 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), the leakage preventing walls (3 BL, 3 BR) being provided at the widthwise end portions of the absorber (8) and formed to extend in the longitudinal direction and stand up to 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), wherein the base end side pieces (3 BL1, 3BR 1) extend inward in the width direction from the joint ends;

a base end fixing portion (31), wherein the base end fixing portion (31) is configured to fix both ends of the base end side sheet (3 BL1, 3BR 1) in the longitudinal direction to the top sheet (9), respectively;

Bending portions (3 BL2, 3BR 2) formed on the inner side edges of the base end portion side pieces (3 BL1, 3BR 1) in the width direction, the bending portions (3 BL2, 3BR 2) being bent from the base end portion side pieces (3 BL1, 3BR 1) toward the skin surface side and toward the outer side in the width direction;

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

a free end fixing portion (32), wherein the free end fixing portion (32) is configured to fix both ends of the free end side sheet (3 BL3, 3BR 3) in the longitudinal direction to the base end side sheet (3 BL1, 3BR 1), respectively; and

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