CN118105243A

CN118105243A - Absorbent article

Info

Publication number: CN118105243A
Application number: CN202311526416.2A
Authority: CN
Inventors: 金田悠太郎
Original assignee: Oji Holdings Corp
Current assignee: Oji Holdings Corp
Priority date: 2022-11-30
Filing date: 2023-11-16
Publication date: 2024-05-31

Abstract

An absorbent article comprising: an outer body; a waist opening portion formed by joining a widthwise end portion of the front body outer body and a widthwise end portion of the rear body outer body, the waist opening portion being configured to allow the abdomen of the wearer to pass therethrough; left and right leg hole openings configured to allow the legs of the wearer to be inserted therethrough; an absorber which is disposed on the skin surface side of the outer body including the crotch region, has an absorbent core, and is configured to absorb discharged liquid; and a water-impermeable backsheet which is disposed on the non-skin-side surface side of the absorbent core and is longer than the absorbent core in the longitudinal direction, at least the longitudinal end side of the end sheet portion including a portion of the backsheet extending outward in the longitudinal direction than the longitudinal end of the absorbent core is not joined to the outer body.

Description

Absorbent article

Technical Field

The present disclosure relates to absorbent articles.

Background

As an example of an absorbent article, a diaper is known which has an outer body covering the non-skin surface side of the wearer and an absorber covering the skin surface side of the wearer from the front body region to the rear body region (japanese patent application laid-open 2016-128051).

Disclosure of Invention

The discharged liquid of the wearer sometimes moves in the longitudinal direction on the skin surface side of the diaper before being absorbed by the absorbent body. When the discharged liquid that moves rapidly passes the longitudinal end of the absorber, the discharged liquid may cause abdominal leakage or back leakage.

The purpose of the present invention is to restrict the flow of discharged liquid at the longitudinal end of an absorber, and to suppress abdomen leakage and back leakage.

An absorbent article according to an aspect of the present disclosure has a length along a longitudinal direction and a width along a width direction orthogonal to the longitudinal direction, and a front body region located on a abdomen side of a wearer, a crotch region located in a crotch portion, and a back body region located on a back side in a wearing state are sequentially provided in the longitudinal direction, and includes: an outer body; a waist opening portion configured to allow insertion of the abdominal circumference of the wearer; a left leg hole opening and a right leg hole opening configured to allow the legs of the wearer to be inserted therethrough; an absorber configured to absorb the discharged liquid; and a water impermeable backsheet. The outer body includes a front body outer body forming an outer surface of the front body region, and a rear body outer body forming an outer surface of the rear body region. The waist opening is formed by joining the widthwise end portion of the front body outer case and the widthwise end portion of the rear body outer case. The absorbent body is disposed on the skin surface side of the outer body including the crotch region, and has an absorbent core. The back sheet is disposed on the non-skin surface side of the absorbent core and is longer than the absorbent core in the longitudinal direction. At least the longitudinal end side of the end piece is not joined to the exterior body. The end sheet portion includes a portion of the back sheet that extends outward in the longitudinal direction than the longitudinal end portion of the absorbent core.

An absorbent article according to an aspect of the present disclosure may be provided with a water permeable core wrap sheet that wraps the absorbent core. The core wrap sheet may extend at the end sheet portion. An absorbent article according to an aspect of the present disclosure may include an elastic member extending in an elongated state in the width direction of the outer body. The elastic member may bias the end piece portion toward the skin surface side in a state where the outer body is elongated in the left-right direction. In the absorbent article according to one aspect of the present disclosure, the elastic member may be arranged in plural in parallel along the width direction at intervals in the longitudinal direction. In the absorbent article according to one aspect of the present disclosure, 1 or more pleats formed in the end panel portion may be wider in the width direction than in the crotch region side at the end in the longitudinal direction.

An absorbent article according to an aspect of the present disclosure may include an end piece that is joined to the outer body and is disposed on a skin surface side of the absorbent body. The end piece may extend toward the longitudinal end side of the absorbent body so as not to be joined to the absorbent body but to overlap at least the end piece portion.

An absorbent article according to an aspect of the present disclosure may include a pair of left and right leakage preventing sheets that overlap width-direction end portions of the absorbent body and stand up toward the skin surface side, and that are joined to the absorbent body in the vicinity of longitudinal-direction end portions of the absorbent body. At the end piece portion, the leakage preventing sheet may be joined to the absorber. In the absorbent article according to one aspect of the present disclosure, the end piece and the outer body may be joined by a joining line extending in the width direction and separated from each other in the length direction. The bonding wire and the elastic member may not overlap. In the absorbent article according to one aspect of the present disclosure, the elastic member at the crotch-most side of the elastic members may overlap the absorber. In the absorbent article according to one aspect of the present disclosure, the elastic member at the crotch-most side of the elastic members may overlap the absorbent core.

In the absorbent article according to one aspect of the present disclosure, the absorber may have a fold portion extending in the width direction in a region corresponding to a urethral orifice of the wearer on the front body region side. The absorber may be formed with a convex portion that is convexly curved toward the skin surface side along the curved portion. In the absorbent article according to one aspect of the present disclosure, the end portion of the absorbent body in the width direction may be non-bonded to the outer body in the end region of the absorbent body in the longitudinal direction.

In the absorbent article according to one aspect of the present disclosure, the absorbent article may include leakage preventing walls that are provided at the widthwise ends of the absorbent body, extend in the longitudinal direction, and are formed to stand up toward the skin surface side of the wearer. The outer body and the absorber may be non-bonded in a side end overlapping region including an extension region of the leakage preventing wall in a region where the outer body overlaps with the end in the width direction of the absorber.

According to the present invention, the flow of the discharged liquid can be restricted at the longitudinal end portion of the absorber, and abdomen leakage and back leakage can be suppressed.

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 a diaper according to embodiment 1.

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

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

Fig. 4 is a view showing a state in which the outer body and the absorber are bonded.

Fig. 5 is a conceptual view of the vicinity of the absorber end sheet portion joined to the outer body.

Fig. 6 is a view showing the longitudinal end portion of the absorbent body including the three-dimensional gather.

Fig. 7 is a view showing the longitudinal end portion of the absorbent body including the three-dimensional gather.

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 cross-sectional view of the diaper, schematically showing a state in which the widthwise end portions of the longitudinal end regions of the absorbent body are raised.

Fig. 10 is a cross-sectional view schematically showing a state in which a side flap portion of a diaper according to the embodiment is raised.

Fig. 11 is an exploded perspective view of a diaper according to embodiment 2.

Fig. 12 is a view schematically showing a state in which the diaper according to embodiment 2 is developed and extended.

Fig. 13 is a diagram showing a relationship between a linear rubber and a bonding line between an end piece and a cover piece.

Detailed Description

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

< Embodiment 1>

Fig. 1 is a perspective view of a diaper according to embodiment 1. More specifically, the present application relates to a perspective view of a disposable diaper for adult use (hereinafter, simply referred to as "diaper"). 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 skin side facing the wearer is referred to as the skin side, and the opposite side to the skin side is referred to as the non-skin side. The direction connecting the skin surface side and the non-skin surface side is referred to as the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is referred to as the width direction. In addition, the thickness direction is defined as a planar view. The diaper 1 has a length along the longitudinal direction and a width along the width direction orthogonal to the longitudinal direction, and is worn on the crotch of a wearer. The term "direction" used in the present application means a direction which coincides with the front, rear, left, and right of the wearer in a state where the diaper 1 is worn on the wearer. For example, in the present application, the term "right-left direction" means a direction which coincides with the right-left direction of the wearer when the diaper 1 is worn on the wearer.

In the present embodiment, as an example of the absorbent article, a pants-type disposable diaper having a tubular structure with an opening into which the abdominal region of the wearer enters and a pair of left and right openings through which the left and right lower limbs of the wearer pass is exemplified, but the "absorbent article" in the present application is not limited to pants-type disposable diapers for adults. The term "absorbent article" as used herein includes pants-type disposable diapers for children. Further, there is also provided an absorbent article capable of wrapping various forms of the abdominal periphery and the crotch, such as a belt-type disposable diaper, which is formed by attaching a belt, which is fixed to a vicinity of one end portion of a sheet-like member covering the crotch (pudendum) of a wearer from the front body over the back body, to a vicinity of the other end portion of the sheet-like member to form a tubular structure.

The diaper 1 has: the crotch region 1B is a portion corresponding to a crotch region that covers the pudendum (crotch) of the wearer in a worn state; the front body region 1F is a region corresponding to a front body at the waist of the wearer and is for covering the abdomen side of the wearer; and a back region 1R, which is a portion corresponding to the back of the wearer at the waist and is for covering the back side of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B, and the rear body region 1R is located on the rear side of the crotch region 1B. Since the diaper 1 of 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. In this way, in the diaper 1, the waist opening 2T, which is a waist opening through which the trunk of the wearer can be inserted, 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 through which a left leg can be inserted is formed in a portion of the left side of the crotch region 1B to which the above-described joining is not performed, and a right leg opening 2R through which a right leg can be inserted is formed in a portion of the right side of the crotch region 1B, thereby forming left and right leg opening portions. When the diaper 1 is worn with the left lower limb of the wearer inserted into the left lower limb opening 2L, the right lower limb of the wearer inserted into the right lower limb opening 2R, and the trunk 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 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. The joining in the present disclosure means that the constituent elements of the diaper 1 are bonded or fused to such an extent that they are not separated in a normal use state, and specifically includes bonding by an adhesive such as a hot melt adhesive, welding by thermal welding or ultrasonic welding, and the like.

In the diaper 1, an absorber capable of absorbing and retaining liquid is mainly disposed around the crotch region 1B. 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. Leg gathers 3LL, 3LR are provided at positions surrounding the root portions of the legs of the wearer. The three-dimensional gathers 3BL, 3BR and the waist gather 3R are brought into close contact with the skin of the wearer by the elastic force of the linear rubber. The leg gathers 3LL and 3LR prevent gaps from being formed between the root portions of the legs of the wearer and the diaper 1. Thus, the discharged matter discharged from the pudendum of the wearer is absorbed by the absorber of the diaper 1 almost without leaking out from the diaper 1.

The left edge of the front body region 1F of the diaper 1 and the left edge of the rear body region 1R are joined to each other. The right edge of the front region 1F and the right edge of the rear region 1R are also joined to each other. The joint portion extends from the left and right lower limb openings 2L, 2R to reach the trunk opening 2T, forming side seal portions 3SL, 3SR. When the side seal portion 3SR is torn from the right lower limb opening portion 2R toward the trunk opening portion 2T, and the side seal portion 3SL is torn from the left lower limb opening portion 2L toward the trunk opening portion 2T, the diaper 1 becomes a flat plate shape. Therefore, the wearer or the facilitator can smoothly change the diaper 1. The right lower limb opening 2R and the left lower limb opening 2L may be collectively referred to as "lower limb opening" or "lower limb opening" as appropriate.

The diaper 1 can be used in combination with an inner pad, not shown. The inner pad is a substantially rectangular absorbent article provided with an absorber, and absorbs discharged liquid. When the diaper 1 is used in combination with an inner pad, the inner pad is placed so as to abut against the discharge hole of the wearer on the skin surface side of the diaper 1 with respect to the absorber. The discharged liquid is first absorbed by the inner pad, and only the discharged liquid which has not been absorbed by the inner pad reaches the absorber of the diaper 1 and is further absorbed. 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 period of time.

Fig. 2 is an exploded perspective view of the diaper 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 3LL, 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. The cover sheet 4 and the inner cover sheet 5 are examples of the outer package of the present disclosure. In the present disclosure, the outer body covers the entire diaper 1, but may be a separate body of the front outer body covering the front region 1F side of the diaper 1 and the rear outer body covering the rear region 1R side of the diaper 1. In the case where the front body region 1F and the rear body region 1R are separate members, a pad cover sheet covering the non-skin surface side of the absorbent member may be provided separately in the crotch region 1B and bonded to both the front body outer member and the rear body outer member. In addition, even when using an exterior body covering the entire diaper 1 as in the present disclosure, expressions such as a front exterior body and a rear exterior body may be used for convenience. In this case, the front body outer body forms the outer surface of the front body region 1F on the outer side in the longitudinal direction after the widened portion of the outer body on the front body region 1F side, and the rear body outer body forms the outer surface of the rear body region 1R on the outer side in the longitudinal direction after the widened portion of the outer body on the rear body region 1R side.

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).

The diaper 1 has a back sheet 6, an absorber 8, and a top sheet 9 laminated in this order on the wearer-side surface of the cover sheet 4 and the inner cover sheet 5. The back sheet 6 is a substantially rectangular parallelepiped sheet having a length extending from the front body to the rear body of the wearer through the crotch in the longitudinal direction and a predetermined width in the width direction 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 water impermeable, that is, liquid impermeable thermoplastic resin, for suppressing leakage of discharged material. The top sheet 9 is a sheet-like member disposed on the skin surface side of the wearer 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 impregnated into the absorber 8 through the topsheet 9 which may contact with the skin of the wearer, and is absorbed by the absorber 8. Examples of the liquid-permeable sheet include woven fabrics, nonwoven fabrics, and porous films. In addition, the top sheet 9 may have hydrophilicity.

The absorbent body 8 has an absorbent core 8c and a core wrap sheet 7 wrapped around the absorbent core 8 c. The absorbent core 8c is substantially hourglass-shaped. 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. Thus, the absorber 8 can absorb the discharged liquid. In the present embodiment, the absorbent core 8c is substantially hourglass-shaped with a narrowed central portion. 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 absorbent core 8c according to the present embodiment is blended with both the short fibers and the SAP, and the difference in the characteristics between the short fibers and the SAP improves the absorption performance and retention performance of the discharged liquid. However, the structure of the absorbent core 8c is not limited to this, and may be made of short fibers without SAP. When the absorbent core 8c is made of only short fibers, the skin feel is improved. In addition, since the outflow of SAP from the absorbent core 8c does not need to be considered, a form in which the core wrap sheet 7 is not provided may be employed.

Further, for example, the absorbent core 8c may be formed of only SAP without adding short fibers. In this form, the absorbent core 8c can be made extremely thin in a state where moisture is not absorbed, such as in a flow-through state, and handling can be facilitated.

The absorbent core 8c may be formed of a plurality of absorbent pads. In this case, absorbent pads having different shapes may be overlapped as the absorbent core 8c. As an example, the absorbent core 8c may be constituted by two pads, an upper layer absorbent pad on the skin surface side and a lower layer absorbent pad on the non-skin surface side. The shape of the upper layer absorbent pad may be substantially hourglass, and the lower layer absorbent pad may be rectangular, which is narrower than the wide portion of the upper layer absorbent pad, so that the width of the lower layer absorbent pad is substantially the same as the width of the narrowed portion of the upper layer absorbent pad.

The core wrap sheet 7 is a thin liquid-permeable sheet, and by wrapping the absorbent core 8c with the core wrap sheet 7, the SAP of the absorbent core 8c described above 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 side of the wearer and a lower sheet disposed on the non-skin side of the wearer and wound around the side surface and the skin side of the absorbent core. When the core wrap sheet 7 is formed of 2 sheets, the width direction end portion of the upper side sheet may be wrapped with another sheet (for example, side sheets 10L and 10R, back sheet 6, and top sheet 9 described later). The length of the core wrap sheet 7 in the longitudinal direction may be the same as the length of the absorbent core 8c in the longitudinal direction.

The entire surface of the absorbent core 8c is covered with a back sheet 6 and a top sheet 9 described later. Therefore, the absorbent core 8c can be protected by these sheets, and a structure in which the core wrap sheet 7 is not provided can be considered. The backsheet 6 is longer than the absorbent core 8c in the longitudinal direction. Therefore, in the vicinity of the longitudinal end portion of the absorber 8, there is an end portion sheet portion 8e as a region where the absorbent core 8c does not extend. The end sheet portion 8e includes the back sheet 6 extending longer than the absorbent core 8c in the longitudinal direction. In addition to the back sheet 6, the top sheet 9 may extend at the end sheet portion 8e, and these sheets may be bonded to each other with an adhesive.

In the present embodiment, the length in the longitudinal direction of the core wrap sheet 7 and the absorbent core 8c is the same, but a configuration may be considered in which the core wrap sheet 7 extends in the longitudinal direction beyond the absorbent core 8c and extends to the end sheet portion 8 e. In this case, the core wrap sheet 7 may be bonded to the back sheet 6 by an adhesive such as a hot melt adhesive in the end sheet portion 8 e. In this configuration, an adhesive such as hot melt may be applied between the core wrap sheet 7 on the skin surface side and the core wrap sheet 7 on the non-skin surface side, and the core wrap sheet 7 on the skin surface side and the core wrap sheet 7 on the non-skin surface side may be bonded to each other. 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 back sheet 6, the absorber 8, and the top sheet 9 all extend from the front body region 1F to the back body region 1R. Thus, when the back sheet 6, the absorber 8, and the top sheet 9 are laminated to cover the wearer's pudendum (crotch), 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 3BR. The side sheets 10L and 10R are provided on the long side 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 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 of the right edge of the rear body region 1R are joined to each other to form the side seal portions 3SL, 3SR, the side sheets 10L, 10R are pulled in the longitudinal direction by the contraction force of the linear rubbers 10L1, 10R1 to stand up from the top sheet 9 along the fold lines 10L2, 10R2, as in the finished diaper 1 shown in fig. 1. As a result, three-dimensional gathers 3BL, 3BR are formed which prevent liquid from flowing out of the left and right lower limb openings 2L, 2R. The side sheets 10L and 10R function as leakage preventing sheets for preventing lateral leakage of discharged liquid. The method for forming the side seal portions 3SL, 3SR is not particularly limited, and may be performed by heat sealing, high-frequency sealing, ultrasonic sealing, or the like, for example.

Fig. 3 is a view schematically showing a state in which the diaper 1 according to embodiment 1 is developed and extended. Part (a) of fig. 3 schematically shows the internal configuration of 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. 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 to the front region of the cover sheet 4, and bonding linear rubbers (linear rubbers) 4R1, 4R2 to the rear region of the cover sheet 4. The linear rubbers 4F1 and 4F2 are provided in the order of the linear rubbers 4F1 and 4F2 from the side of the folding line 4FF along the folding line 4FF that forms 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 rear body region 1R when folded back, as with the linear rubbers 4F1 and 4F 2. The linear rubbers 4F1, 4R1, 4F2, 4R2 are formed by providing a plurality of elastic members extending and contracting in the width direction in parallel in the longitudinal direction.

Therefore, the linear rubbers 4F1, 4F2 are provided on the cover sheet 4 in such an orientation that the direction around the trunk, which is the extension and contraction direction, is the right and left 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. Thus, when the edge 4F4 and the edge 4R4 are joined to each other and the edge 4F5 and the edge 4R5 are joined to each other at the side seal portions 3SL and 3SR, 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 trunk-surrounding direction. That is, the linear rubbers 4F1 and 4F2 and the linear rubbers 4R1 and 4R2 exert a 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 extend in the width direction and are arranged in parallel at predetermined intervals in the longitudinal direction. The linear rubbers 4F1 and 4R1 fasten the abdomen of the wearer relatively strongly above the linear rubbers 4F2 and 4R2 in a state where the diaper 1 is worn. The linear rubbers 4F1 and 4R1 serve to prevent the diaper 1 from being brought into close contact with the wearer, thereby preventing the wearing position from being shifted, and preventing discharged materials from leaking from the abdomen and back. The linear rubbers 4F2 and 4R2 alleviate the feeling of compression to the wearer due to the contraction force of the linear rubbers 4F1 and 4R 1. In addition, in the case of using the inner pad, the displacement of the inner pad is suppressed.

Further, the linear rubber 4F3 and the linear rubber 4R3 are bonded to the cover sheet 4. 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 so as to be bent in the crotch region 1B, unlike the other linear rubbers which are bonded so as not to be bent from the left end to the right end of the cover sheet 4. In this way, the linear rubbers 4F3 and 4R3 are disposed in a curved manner, and thus the disposed areas of the linear rubbers 4F3 and 4R3 have a function as leg gathers for bringing the peripheries of the leg hole openings including the left and right lower limb openings 2L and 2R into contact with the skin surface of the wearer.

The linear rubber 4F3 on the front body region 1F side crosses the absorber 8 in the width direction and continues in the width direction. The portion of the linear rubber 4F3 crossing the absorber 8 in the width direction corresponds to the vicinity of the pubis of the wearer. The urethral opening of the wearer is in contact with the skin surface side of the diaper 1 on the crotch side of the portion where the linear rubber 4F3 crosses the absorber 8.

On the other hand, the linear rubber 4R3 on the rear body region 1R side overlaps the widthwise outer side of the absorbent core 8c at the narrowed portion of the hourglass-shaped absorbent core, but does not traverse the absorbent body 8 in the widthwise direction. The linear rubber 4R3 is disposed in a region that abuts the buttocks of the wearer near the absorber 8. In the back region 1R, the diaper 1 is strongly pressed by the pressure applied to the buttocks of the wearer compared to the front region 1F. Therefore, the linear rubber 4R3 is not provided at the widthwise central portion of the absorber 8, but is biased to pull apart widthwise end portions of the absorber 8 from each other, whereby the diaper 1 is brought into contact with the wearer with an appropriate adhesion force.

The cover sheet 4 is folded back at the folding lines 4FF, 4RF, and the arrangement regions of the linear rubbers 4F1, 4F2, 4R1, 4R2 are reinforced by the folding portions.

In the present application, the state in which the sheets overlap is not limited to the state in which the sheets overlap each other in the state in which the sheets are in contact with each other over the entire surface, and is a concept including the state in which a part of the sheets overlap each other. The diaper 1 has a laminate in which a cover sheet 4, an inner cover sheet 5, and side sheets 10L, 10R are stacked in addition to a back sheet 6 and a top sheet 9 sandwiching an absorber 8.

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 a state in which the diaper 1 according to embodiment 1 is developed and extended. In fig. 4, the top sheet 9, the side sheets 10L, 10R, and the end sheets 11F, 11R are omitted from illustration. 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 apart from each other in the longitudinal direction.

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

The narrow portion 12B is provided in the crotch region 1B, and adheres the portion at the center in the longitudinal direction of the absorber 8 to the inner cover sheet 5. The narrow portion 12B overlaps with the narrowest portion 88B of the absorbent core 8C and the widened portion 88C on the rear body region 1R side. The linear adhesive portion 12a constituting the narrow portion 12B extends in a range where both widthwise end portions of the absorber 8 are removed. 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 outward in the width direction than the absorbent core 8 c. That is, in the 2 nd width portion 12B2, the length of the linear adhesive portion 12a in the width direction is equal to the width of the narrowest portion 88B of the absorbent core 8 c. In the 2 nd width portion 12B2, the widthwise end portion of the absorbent core 8c 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. Here, the non-adhesive region 13 is provided to include a region corresponding to the urethral orifice of the wearer (hereinafter, referred to as "urethral orifice corresponding region") and a region corresponding to the inguinal region of the wearer (hereinafter, referred to as "inguinal region corresponding region"). The urethral opening corresponding region is a region where the urethral opening of the wearer is located in the wearing state of the diaper 1. The groin-corresponding region is a region where the groin of the wearer is located in the wearing state of the diaper 1. 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 formed adjacently in the longitudinal direction to form steps in the width direction, so that 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 in the narrow portion 12B, and therefore the absorber 8 and the outer body are not bonded to each other on 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 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 so as to overlap the side flap portions 14 in an extended state, 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 raised. 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 a diaper according to embodiment 1. More specifically, the present invention is a cross-sectional view schematically showing a cross-sectional structure of the diaper 1 according to the embodiment, in a 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, 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 top sheet 9 is also wider than the absorber 8, and is wrapped around the side surface of the absorber 8 to reach the non-skin surface side, and is folded back at the widthwise end of the absorber 8 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 region to the rear region in the longitudinal direction of the diaper 1. Thus, the diaper 1 can also 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, i.e., the folding lines 10L2 and 10R2, formed at the positions overlapping the top sheet 9. 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 and 3BR are formed so as to rise toward the skin surface side from the fold-back lines 10L2 and 10R2 which are joining end portions 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. In the side panels 10L, 10R, the range from the folded-back portions 3BL2, 3BR2 to the free end portions 3BL4, 3BR4 is in contact with the skin of the wearer. The base end side panels 3BL1, 3BR1, the folded-back 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 function from the rising ends of the folding lines 10L2 and 10R2 to the folding portions 3BL2 and 3BR 2. The region from the folded portions 3BL2, 3BR2 to the free end portions 3BL4, 3BR4 of the linear rubbers 10L1, 10R1 which are arranged on the skin surface side of the rising portion and have a plurality of elastic members extending in the longitudinal direction 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 according to 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.

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

As shown in fig. 3, a 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.

The linear rubbers 4F2, 4R2 extend during wearing of the diaper 1, and press the end piece 8e 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 according to the present embodiment effectively prevents the movement of the discharged liquid toward the longitudinal end portion side, and suppresses the abdomen leakage and the back leakage. The linear rubbers 4F2, 4R2 overlapped with the end piece 8e are an example of the plurality of elastic members of the present disclosure.

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.

Since the dome shape is formed near the longitudinal end portion of the absorber 8, the proportion of the absorber 8 that contacts 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 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 in which the flow is suppressed in the vicinity of the longitudinal end portion, and can prevent the discharged liquid from moving toward 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 discharge liquid may flow through the space to reach the longitudinal end. In the diaper 1 according to 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, etc. of the linear rubbers 4F2, 4R2, and the like, and the shape of a dome bent toward the skin surface side is not necessarily formed. In such a case, the discharged liquid may reach the longitudinal end portion through the gather portion, but the longitudinal end portion of the end portion sheet portion 8e stands up toward the skin surface side of the wearer and comes into contact with the skin of the wearer in a planar manner to form the leakage preventing wall, so that leakage of the discharged liquid from the longitudinal end portion of the absorber 8 can be suppressed.

Fig. 6 is a conceptual view of the vicinity of the absorber end sheet portion joined to the outer body. In the outer case including the inner cover 5, linear rubbers 4F2, 4R2 extending in the width direction are provided at predetermined intervals in the longitudinal direction in the vicinity of the longitudinal end portions of the absorber 8. The linear rubbers 4F2 and 4R2 contract inward in the width direction, so that fine, pleated irregularities are formed between the respective linear rubbers constituting the linear rubbers 4F2 and 4R2. The irregularities function as cushioning portions, and suppress the sense of discomfort caused to the skin surface of the wearer by the linear rubbers 4F2, 4R2.

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 at an extension region of the absorbent core 8c, and also overlaps with a part of the linear rubbers 4F2, 4R2 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. In the extended region of the absorbent core 8c, the absorber 8 is folded inward in the width direction, and the widthwise central portion thereof is dome-shaped to the skin surface side so as to come into contact with the skin surface of the wearer. With this configuration, the ratio of the longitudinal end region of the absorbent core 8c to contact 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 at the end sheet portion 8e, the core wrap sheet 7 joined to the inner side thereof is joined to the top sheet 9 on the skin surface side and joined to the back sheet 6 on the non-skin surface side to form the end sheet portion 8e. These sheets forming the end sheet portions 8e are not liquid-absorbent, but are less rigid than the absorbent core 8c having high rigidity, and therefore are more pliable. 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 applied to the end piece 8e from the linear rubbers 4F2, 4R2 is reduced at least at the longitudinal end thereof.

Although the end sheet portion 8e has a plurality of pleats formed therein, the width of each pleat is larger than the width of the pleat formed in the outer body, and the depth is shallower than the pleat formed in the outer body. Further, since the forces received by the end sheet portions 8e from the linear rubbers 4F2, 4R2 are stronger on the crotch region 1B side, the plurality of folds are so-called horn shapes that are narrow in the width direction on the crotch region 1B side and wide in the width direction at the longitudinal end portions.

Since the pleats are shallow at the longitudinal ends of the end sheet portions 8e and are wide in the width direction, the contact ratio of the longitudinal ends of the end sheet portions 8e with the skin surface of the wearer is large. 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. 7 is a view showing the longitudinal end portion of the absorbent body including the three-dimensional gather. In the present figure, the front region 1F side is illustrated, but the structure of the absorber 8 is common to both sides in the longitudinal direction, and therefore the same applies to the rear region 1R side. The side sheets 10L, 10R are overlapped with 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 overlap the absorbent body 8 over the entire region of the extension region of the absorbent body 8, and the joined portions reach the end sheet portions 8e. Therefore, the rigidity of the widthwise ends of the end sheet portions 8e is enhanced by joining the side sheets 10L, 10R. Since the end portion 8e has high rigidity in the width direction end portion, the entire end portion 8e is easily bent toward the skin surface side. Further, since the end portion 8e has high rigidity in the width direction end portion, the biasing force indirectly applied by the linear rubbers 4F2, 4R2 to bend the end portion 8e inward in the width direction can be more easily opposed. With this configuration, the bending of the longitudinal ends of the end piece portions 8e does not occur or becomes very gentle, and even if wrinkles are formed, the depth of the wrinkles is reduced, and the size of the wrinkles is also increased in the width direction. As a result, the longitudinal end of the end piece 8e contacts the skin surface of the wearer over a large area, and the function as a leakage preventing wall in the longitudinal direction can be more effectively exhibited.

Further, the diaper 1 is folded in the longitudinal direction in a state before use. In the state of use, the fold mark remains as a fold C, and the absorber 8 is folded toward the non-skin surface side in the vicinity of the fold C. The absorber 8 is bent toward the skin surface side in the overlapping region with the 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 in which discharged liquid can be stored 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.

Fig. 8A, 8B, and 8C are diagrams illustrating the convex portions. Fig. 8A, 8B, and 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 unabsorbed discharged liquid is not absorbed and swelled, and the unabsorbed discharged liquid continues to stay between the absorbent body and the skin surface of the wearer, and the wearing sensation is reduced. 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 according to 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 according to 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 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, the rising ends of the three-dimensional gathers 3BL, 3BR serving as leakage preventing walls are located further to the outside in the width direction than the widthwise ends of the absorbent core 8c at the convex portions 17. Therefore, the three-dimensional gathers 3BL and 3BR become soft in the vicinity of the convex portions 17, rise toward the skin surface side following the formation of the convex portions 17, and prevent 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, 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. As described above, the diaper 1 according to the present embodiment forms the convex portion 17 by bending the absorber 8 in the longitudinal direction, and does not cause lateral leakage.

Fig. 8C is a diagram showing a more preferable configuration of the absorber 8 of the diaper 1 according to the present embodiment. In the present embodiment, the non-adhesive region 13 extends toward the front body region 1F and toward the rear body region 1R than the portion of the linear rubber 4F3 that traverses the crotch region 1B in the width direction. As shown in fig. 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 according to 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.

In addition, 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 according to 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.

In addition, when the diaper 1 is worn by a male, the testis is 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 bulges along with the bulge of the testis, but the testis can be held by lifting up 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 according to 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 according to 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 according to 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 than the end in the width direction of the absorbent core 8c at the convex portions 17, and have lower rigidity than the extension region of the absorbent core 8c, and therefore are easily bent in accordance with the bending of the convex portions 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 diaper 1 according to the present embodiment is not limited to the longitudinal direction, and leakage of discharged liquid can be suppressed in the width direction. The absorbent core 8c forms the convex portion 17 with a portion narrowed in the width direction. That is, at the bent portion, which is the range where the convex portion 17 is formed, the absorbent core 8c is narrowed in the width direction. Thus, the folded 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 positioned on the outer side in the width direction than the absorbent core 8c at the folded portions which are the ranges where the convex portions 17 are formed. When viewed in the thickness direction, the three-dimensional gathers 3BL, 3BR are formed in a rectangular shape. Therefore, if the folded lines 10L2, 10R2 (standing lines) are positioned to overlap the absorbent core 8c at the bent portions that are the areas where the convex portions 17 are formed, when the three-dimensional gathers 3BL, 3BR stand up in the 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 areas where the convex portions 17 are formed where the absorbent body 8 bulges, and therefore, a difference in height of the three-dimensional gathers 3BL, 3BR occurs in the front and rear areas where the convex portions 17 are formed. In this way, the three-dimensional gathers 3BL and 3BR strongly contact the skin at the bent portions in the range where the convex portions 17 are formed, and the three-dimensional gathers 3BL and 3BR may easily come off from the skin at the positions before and after the bent portions in the range where the convex portions 17 are formed. In contrast, in the diaper 1 according to the present embodiment, the fold lines 10L2, 10R2 (standing lines) are provided at the positions where the rigidity of the absorbent body 8 is low in the range where the convex portions 17 are formed, and therefore the fold lines 10L2, 10R2 can sink to the non-skin surface side, and the occurrence of the height difference of the three-dimensional gathers 3BL, 3BR is suppressed in the folded portion which is the range where the convex portions 17 are formed and the range in front and rear of the folded portion. 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 and 10R1 of the plurality of linear rubbers 10L1 and 10R1 disposed on the outer side in the width direction of the diaper 1 have lower elongation than the linear rubbers 10L1 and 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 according to 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 suppressed from being reversed to the inner side 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 suppressed from being reversed to the top sheet 9 side.

Fig. 9 is a cross-sectional view of the diaper 1, schematically showing a state in which the widthwise end portions of the longitudinal end regions of the absorber 8 are raised. In fig. 9, the construction of the absorber 8 is illustrated in simplified form. As described above, the diaper 1 according to the present embodiment includes: an absorber 8 provided at a position including the crotch region 1B and capable of absorbing the 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 for adhering the absorber 8 to the outer case. 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. 9, 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 flatter than 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 skin surface and the abdomen side and the back side 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 according to the present embodiment includes three-dimensional gathers 3BL and 3BR provided at the widthwise end portions of the absorbent body 8, extending in the longitudinal direction, and standing up toward the skin surface side. As a result, as shown in fig. 9, 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 according to the present embodiment are joined to the top sheet 9 and stand up from the fold-back lines 10L2 and 10R2, which are joining end portions with the top sheet 9, toward the skin surface side. The three-dimensional pleats 3BL, 3BR have: base end side panels 3BL1, 3BR1 extending inward in the width direction from the joined end with the top sheet 9; and base end adhesive parts 31 for fixing both ends of the base end side panels 3BL1, 3BR1 in the longitudinal direction to the top sheet 9, respectively, wherein linear rubbers 10L1A, 10R1A extending in the longitudinal direction are provided in the base end side panels 3BL1, 3BR1 in an elongated state. In the diaper 1 according to the present embodiment, the widthwise end portion of the absorber 8 is non-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 widthwise end portions of the absorbent body 8 can be raised toward the skin surface side within the non-fixed range R1 in which the base end side panels 3BL1, 3BR1 can be raised. As a result, the base end portion side sheets 3BL1, 3BR1 are raised toward the skin surface side while facing the inner side in the width direction by the tension of the linear rubber 10L1A, and thereby, as shown in fig. 9, a space can be formed between the raised widthwise end portion of the absorber 8 and the raised base end portion side sheets 3BL1, 3BR 1. Thus, even when the discharged material that has entered the abdomen side and the back side reaches the widthwise end 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 is suppressed.

In the diaper 1 according to the present embodiment, the widthwise end portion of the absorber 8 and the outer cover are non-bonded within the range (the fixed range R2) in the longitudinal direction in which the base end bonding portion 31 is formed. Accordingly, even in the fixed range R2 located on the longitudinal end side of the base end side panels 3BL1, 3BR1, the widthwise end of the absorber 8 can be raised, and therefore, the widthwise end 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 according to 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 can be brought into contact with the skin more reliably than in the case where the three-dimensional gathers 3BL, 3BR do not have the free end side panels 3BL3, 3BR3. In the diaper 1 according to 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 portion of the absorber 8 can be raised more reliably, and lateral leakage of the discharged material can be suppressed more appropriately. The three-dimensional gathers 3BL, 3BR may not have the free end side panels 3BL3, 3BR3.

In the diaper 1 according to the embodiment, the 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 side edge on the inner side in the width direction of the base end portion side sheets 3BL1, 3BR1 from the non-skin surface side, and the joined end portion of the base end portion side sheets 3BL1, 3BR1 and the top sheet 9 is located on the outer side in the width direction than the absorbent core 8c of the absorbent body 8 in the range of the length direction in which the convex portion 17 is formed. In this way, since the fold-back lines 10L2, 10R2 (standing lines) are provided at the positions where the absorbent core 8c is absent and the rigidity of the absorbent body 8 is low in the range where the convex portions 17 are formed, the fold-back lines 10L2, 10R2 can sink into the non-skin surface side, and the occurrence of the height difference of the three-dimensional gathers 3BL, 3BR between the range where the convex portions 17 are formed and the front-rear range of the convex portions 17 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. 10 is a cross-sectional view schematically showing a state in which the side flap portions 14L, 14R of the diaper 1 according to the embodiment are raised. Fig. 10 corresponds to a cross-sectional view of the diaper 1 taken at the line BB in fig. 3, and a simplified diagram shows the structure of the absorber 8. As described above, 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, and therefore 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. 10. The crotch region 1B is a region of the diaper 1 where the skin of the wearer is most likely to be separated. In contrast, in the diaper 1 according to the present embodiment configured as described above, the side flap 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 fold-back lines 10L2, 10R2, which are the base ends of the three-dimensional gathers 3BL, 3BR, at a position overlapping the side flap 14, as shown in fig. 10, the three-dimensional gathers 3BL, 3BR can be further raised from the widthwise ends of the side flap 14 in a state where the side flap 14 is raised toward the skin surface side and is brought 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 according to the present embodiment, the adhesive portion 12 is formed so that the width thereof is narrowed from the rear body region 1R side toward the longitudinal center side (the crotch region 1B side), and 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 side 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 increased near 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 skin of the wearer is most easily separated in the crotch region 1B, and the three-dimensional gathers 3BL, 3BR can be reliably brought into contact with the skin. Further, by raising the raised 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 and lowering the raised height of the side flap 14 toward the rear body region 1R, the three-dimensional gathers 3BL and 3BR are naturally brought into contact with the skin surface on the rear body region 1R along the back side skin surface that is flatter than 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, urine can be stored in the space, and even if urine overflows from the space to the back side, urine naturally diffuses to the back side and is absorbed while being suppressed by the three-dimensional gathers 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 region 1F side toward the crotch region 1B side, or may be narrowed from both end portions in the longitudinal direction toward the crotch region 1B side.

The diaper 1 according to the present embodiment includes: a top sheet 9, 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 disposed 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 stand up from the fold-back lines 10L2 and 10R2, which are joining end portions with the top sheet 9, toward the skin surface side. 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 and 3BR have an inside-outside folded shape that is 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 a 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 absorbent core 8c is covered with the widthwise end portion of the absorbent body 8, the three-dimensional gathers 3BL, 3 BR. 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 leakage may occur.

In contrast, in the diaper 1 according to the present embodiment, the absorber 8 is convexly folded toward the skin surface side of the wearer, so that the convex portion 17 extending in the width direction is formed in the crotch region 1B, and the convex portion 17 is formed at least over the portion 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. By forming such a convex portion 17 between the side end overlapping regions A1, A1 on both sides in the width direction in the diaper 1 according to the present embodiment, the widthwise end portion of the absorber 8 in the side end overlapping region A1 is 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.

Further, 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. 10, the side wing 14 is supported from the inner side in the width direction by the convex portion 17, and the side wing 14 can be restrained from being bent from the base end portion so as to incline inward in the width direction (tilting manner) and from being recessed inward in the width direction while the side wing 14 is raised toward the skin surface side. 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.

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

< Embodiment 2 >

Fig. 11 is an exploded perspective view of a diaper according to embodiment 2. In embodiment 2, in each drawing, 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, in addition to the configuration of embodiment 1, the diaper 1 further includes an end piece 11F that is laminated on the wearer side surface in the front region 1F of the cover sheet 4 and an end piece 11R that is laminated on the wearer side surface in the rear region 1R of the cover sheet 4.

The end sheets 11F, 11R are long, water impermeable sheets that overlap the cover sheet 4 at one end side in the longitudinal direction of the top sheet 9. The end pieces 11F, 11R are water-impermeable nonwoven fabrics, and reinforce the cover piece 4 mainly at the waist contact portion of the diaper 1. The end sheets 11F and 11R are disposed closer to the skin surface than the laminate formed by the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L and 10R, and prevent the end portions of the laminate from coming into direct contact with the skin surface to give the wearer a feeling of discomfort.

Fig. 12 is a view schematically showing a state in which the diaper according to embodiment 2 is developed and extended. In embodiment 2, the cover sheet folded back at the folding lines 4FF, 4RF covers the skin surface side of the extension region of the linear rubbers 4F1, 4R1, but does not cover the skin surface side of the extension region of the linear rubbers 4F2, 4R 2. 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.

The end pieces 11F, 11R are joined to the inner cover piece 5 in the areas where the absorber 8 does not extend. However, the end pieces 11F, 11R are not joined to the longitudinal ends of the end piece portion 8e of the absorber 8. With this configuration, the end pieces 11F and 11R do not prevent the end piece 8e from rising toward the skin surface side. With this configuration, even if the skin surface side of the end piece portion 8e is covered with the end pieces 11F and 11R, the function as the leakage preventing wall is not lost, and abdomen leakage and back leakage of the discharged liquid can be suppressed.

In the region where the absorber 8 does not extend, the end pieces 11F, 11R are joined to the inner cover piece 5, and are easily subjected to the biasing force of the linear rubbers 4F2, 4R 2. In this region, small wrinkles in the width direction due to the urging forces of the linear rubbers 4F2, 4R2 are formed in parallel in the end pieces 11F, 11R. On the other hand, the end pieces 11F, 11R are not directly joined to the inner cover piece 5 in the extension region of the absorber 8, and the influence of the force received from the linear rubbers 4F2, 4R2 is reduced. In the extension region of the absorber 8, no wrinkles are formed in the end pieces 11F, 11R, or even if wrinkles are formed, the wrinkles are larger than those in the region joined to the inner cover sheet 5 in the width direction, and the contact ratio with the skin surface is also increased. As described above, in the diaper 1 according to embodiment 2, the action of the discharged liquid flowing in the longitudinal direction is suppressed by the synergistic effect of the end piece portion 8e and the end pieces 11F and 11R, and therefore, the abdomen leakage and the back leakage can be suppressed more effectively.

The end pieces 11F, 11R are not joined to the longitudinal ends of the end piece 8e of the absorber 8, and are therefore movable relative to the end piece 8 e. In the diaper 1 according to embodiment 2, the longitudinal end portions of the end portions 8e are prevented from being caught by the skin surface of the wearer, and the skin feel can be improved.

Fig. 13 is a diagram showing a relationship between a linear rubber and a bonding line between an end piece and a cover piece. The present figure is an enlarged view illustrating a case where one side of the extension region of the end piece 11F in the front body region 1F of the diaper 1 is viewed from the skin surface side. The diaper 1 according to the present embodiment has a bilaterally symmetrical structure, and the structure is the same on the opposite side. The same applies to the configuration described in fig. 13 on the rear region 1R side. The linear rubbers 4F2, 4R2 are disposed in the front region 1F and the rear region 1R of the diaper 1 so as to extend in the width direction with a predetermined interval therebetween in the longitudinal direction. The linear rubbers 4F2 and 4R2 are disposed between the cover sheet 4 and the inner cover sheet 5, and are bonded to both the cover sheet 4 and the inner cover sheet 5 by using an adhesive such as a hot melt adhesive applied to the linear rubbers 4F2 and 4R2, for example.

The end pieces 11F and 11R are also joined to the outer body, more specifically, to the inner cover piece 5, by a plurality of joining lines formed by an adhesive agent HM such as a hot melt adhesive. The bonding wires are arranged in plural so as to be separated from each other at a predetermined interval in the longitudinal direction and extend in the width direction. Here, the bonding wires for bonding the end pieces 11F, 11R to the exterior body are arranged such that the bonding wires that do not overlap the linear rubbers 4F2, 4R2 are more than the bonding wires that overlap the linear rubbers 4F2, 4R 2.

The end pieces 11F, 11R are in contact with the skin surface of the wearer. The end pieces 11F and 11R function as cushioning members for dispersing the contraction force of the linear rubbers 4F2 and 4R2 in a range where the end pieces are not bonded to the inner cover piece 5 by bonding wires. The linear rubbers 4F2 and 4R2 press the diaper 1 against the skin surface of the wearer to suppress the displacement. In addition, when the diaper 1 and the inner pad are used together, it is preferable that the inner pad is held in place, and the diaper is pressed against the skin surface of the wearer with a constant force. On the other hand, when the biasing force of the linear rubber is directly transmitted to the skin surface of the wearer, the linear rubber 4F2, 4R2 is caught on the skin surface of the wearer. When the linear rubber is caught on the skin surface of the wearer, the wearing feeling of the diaper is reduced, which also causes a skin surface problem. In the diaper 1 according to embodiment 2, the joint lines of the end pieces 11F and 11R do not overlap the positions of the linear rubbers 4F2 and 4R 2. Or the portion where the bonding wires of the end pieces 11F, 11R do not overlap with the positions of the linear rubbers 4F2, 4R2 is larger than the overlapping portion. The end pieces 11F, 11R function as cushioning members for the linear rubbers 4F2, 4R2 on the skin surface side of the wearer, and disperse the urging forces of the linear rubbers 4F2, 4R2 to suppress the intrusion into the skin surface. As a result, a diaper having an appropriate force to cause the diaper 1 to follow the skin surface of the wearer and suppressing a decrease in the wearing feeling can be provided.

Further, a configuration may be considered in which the linear rubber disposed on the crotch side of the plurality of linear rubbers 4F2, 4R2 overlaps with the bonding wire between the end pieces 11F, 11R and the outer body to form the overlapping portion 15. By overlapping the linear rubbers 4F2, 4R2 and the bonding wires between the end pieces 11F, 11R and the outer body at the overlapping portion 15, the biasing force of the linear rubbers 4F2, 4R2 is not relaxed by the end pieces 11F, 11R, and is strongly applied to the skin surface of the wearer. By providing the overlapping portion 15 at a position closest to the crotch, the diaper 1 is strongly abutted against the vicinity of the waist bones of the wearer, and slipping-off can be strongly suppressed.

The overlapping portion 15 may overlap the absorber 8. More preferably, it may overlap the extension of the absorbent core 8 c. The absorber 8 overlaps the skin surface side of the outer body. When the overlapping portion 15 is provided at the crotch-most side of the plurality of linear rubbers 4F2, 4R2, there is a possibility that the linear rubbers 4F2, 4R2 are caught on the skin surface of the wearer at the overlapping portion 15. Therefore, by providing the overlapping portion 15 at the portion where the absorber 8 overlaps the skin surface side of the outer body, the absorber 8 having high rigidity functions as a cushion, and the linear rubbers 4F2, 4R2 can be suppressed from being pulled into the skin surface of the wearer. Further, even at the end sheet portion 8e where the absorbent core 8c does not extend, the rigidity of the absorbent body 8 is higher than the end sheets 11F, 11R. Since the rigidity of the absorber 8 is higher in the range in which the absorbent core 8c extends, the overlapping portion 15 is provided in the extending region of the absorber 8, so that the linear rubbers 4F2 and 4R2 can be more effectively prevented from being caught on the skin surface of the wearer.

By providing the overlapping portion 15 at a position overlapping the absorber 8, the diaper 1 can be prevented from slipping off and the skin feel can be improved.

In fig. 13, the overlapping portion 15 is provided at only one portion on the crotch side, but a plurality of portions may be provided within a range where the end pieces 11F, 11R overlap the linear rubbers 4F2, 4R 2. As an example, one of 3 to 4 of the linear rubbers 4F2, 4R2 may be configured as the overlapping portion 15. By providing a plurality of overlapping portions 15, the diaper 1 can be further prevented from slipping off. Further, it is preferable that the position where the overlapping portion 15 is present is sufficiently separated in the longitudinal direction, so that the wearing feeling can be suppressed from being lowered.

The embodiments have been described above, but the content of the present invention is not limited to the above embodiments. For example, it is also conceivable that the end pieces 11F, 11R overlapping the absorber 8 in the thickness direction are not joined to the absorber 8 in the entire extension region of the absorber 8. In this case, in the extension region of the absorber 8, the end pieces 11F, 11R form a pocket-like space with the absorber 8. The discharged liquid that has moved to the longitudinal end portion falls into the pocket-like space, and thus abdomen leakage and back leakage can be suppressed, and eventually absorbed by the absorbent core 8c of the absorbent body 8. Since the end pieces 11F and 11R are not bonded to the absorber 8, the absorber 8 is less susceptible to the end pieces 11F and 11R, and deformation and wrinkles formed in the absorbent core 8c and the end piece portion 8e are formed in the same manner as in embodiment 1. Therefore, the flow of the discharged liquid can be suppressed.

When the end pieces 11F and 11R are configured to function as bag-like spaces for suppressing movement of the discharged liquid in the longitudinal direction, the end pieces 11F and 11R are not coated with the hot-melt adhesive at positions overlapping the absorbent body 8. In this configuration, the linear rubbers 4F2 and 4R2 are suppressed not only by the absorber 8 but also by the end pieces 11F and 11R, so that both the prevention of slipping down of the diaper 1 and the improvement of the skin feel can be better achieved.

The embodiments disclosed above can be combined separately.

Claims

1. An absorbent article having a length along a 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 a wearer's abdomen side, a crotch region located in a crotch portion, and a rear body region located on a back side in this order in a wearing state,

The absorbent article includes:

an outer body (4, 5), the outer body (4, 5) comprising a front body outer body forming an outer surface of the front body region, and a rear body outer body forming an outer surface of the rear body region;

A waist opening (2T) formed by joining the end in the width direction of the front body outer body and the end in the width direction of the rear body outer body, the waist opening (2T) being configured to allow the abdomen circumference of the wearer to pass through;

left and right leg hole openings (2L, 2R), the left and right leg hole openings (2L, 2R) being configured to allow the legs of the wearer to pass therethrough;

An absorber which is disposed on the skin surface side of the outer body (4, 5) including the crotch region, has an absorbent core, and is configured to absorb discharged liquid; and

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

At least the longitudinal end portion side of the end sheet portion is not joined to the outer case (4, 5), and the end sheet portion includes a portion of the back sheet (6) extending outward in the longitudinal direction than the longitudinal end portion of the absorbent core.

2. The absorbent article of claim 1, wherein the absorbent article comprises,

The absorbent article further comprises a water permeable core wrap sheet (7) for wrapping the absorbent core,

The core wrap sheet (7) extends at the end sheet portion.

3. The absorbent article of claim 1, wherein the absorbent article comprises,

The absorbent article further comprises elastic members (4F 2, 4R 2), wherein the elastic members (4F 2, 4R 2) extend in an elongated state in the width direction of the outer body (4, 5),

The elastic members (4F 2, 4R 2) apply force to the end piece portions toward the skin surface side in a state where the outer body (4, 5) is elongated in the left-right direction.

4. The absorbent article as set forth in claim 3 wherein,

The elastic members (4F 2, 4R 2) are arranged in parallel in the width direction at intervals in the longitudinal direction.

5. The absorbent article as in any of claims 1-4, wherein,

The 1 or more pleats formed in the end sheet portion are wider in the width direction than the crotch region side at the end in the longitudinal direction.

6. The absorbent article as in claim 3 or 4, wherein,

The absorbent article further comprises an end piece (11F), wherein the end piece (11F) is joined to the outer body (4, 5) and is arranged on the skin surface side of the absorbent body,

The end piece (11F) extends toward the end portion side of the absorber in the longitudinal direction so as not to be joined to the absorber but so as to overlap at least the end piece portion.

7. The absorbent article as in any of claims 1-4, wherein,

The absorbent article further comprises a pair of left and right leakage preventing sheets (10L, 10R), wherein the pair of left and right leakage preventing sheets (10L, 10R) are overlapped with the width direction end part of the absorber and stand up to the skin surface side, are jointed with the absorber near the length direction end part of the absorber,

The leakage preventing sheets (10L, 10R) are joined to the absorbent body at the end sheet portions.

8. The absorbent article as in claim 6, wherein,

The end piece (11F) and the outer body (4, 5) are joined by a joining line extending in the width direction and separated from each other in the length direction, and

The bonding wire does not overlap the elastic members (4F 2, 4R 2).

9. The absorbent article as in claim 6, wherein,

The elastic member at the crotch-most side of the elastic members (4F 2, 4R 2) overlaps the joining line.

10. The absorbent article as in claim 9, wherein,

The elastic member at the crotch-most side of the elastic members (4F 2, 4R 2) overlaps the absorber.

11. The absorbent article as set forth in claim 10 wherein,

The elastic member at the crotch-most side of the elastic members (4F 2, 4R 2) overlaps the absorbent core.

12. The absorbent article of claim 1, wherein the absorbent article comprises,

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

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

13. The absorbent article of claim 1, wherein the absorbent article comprises,

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

14. The absorbent article of claim 1, wherein the absorbent article comprises,

The absorbent article further comprises leakage preventing walls (3 BL, 3 BR), wherein the leakage preventing walls (3 BL, 3 BR) are provided at the ends of the absorbent body in the width direction, extend in the longitudinal direction, and are formed to stand up toward the skin surface side of the wearer,

The outer body (4, 5) and the absorber are non-bonded in a side end overlapping region including an extension region of the leakage preventing wall (3 BL, 3 BR) in a region where the outer body (4, 5) and the end of the absorber in the width direction overlap.