CN219516843U

CN219516843U - Absorbent article

Info

Publication number: CN219516843U
Application number: CN202320086436.1U
Authority: CN
Inventors: 笹津嵩礼
Original assignee: Oji Holdings Corp
Current assignee: Oji Holdings Corp
Priority date: 2022-02-03
Filing date: 2023-01-30
Publication date: 2023-08-15
Anticipated expiration: 2033-01-30
Also published as: CN116531178A

Abstract

An absorbent article having a length along a longitudinal direction and a length along a width direction orthogonal to the longitudinal direction. The absorbent article comprises an absorbent body (8), an outer sheet, stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3), and a non-adhesive layer. The absorbent body (8) is configured to have an absorbent core and a core wrap sheet and to absorb discharged liquid discharged from a wearer. The absorbent core has a narrowed portion that narrows in the width direction. The core wrap sheet is configured to cover the absorbent core. The outer sheet is disposed on the non-skin surface side of the absorber (8). The stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) are bonded to at least a part of the outer sheet in an elongated state and are stretchable in the width direction. The non-adhesive layer is provided between the absorbent core and the stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3).

Description

Absorbent article

Technical Field

The present utility model relates to an absorbent article.

Background

In an absorbent article, in order to suppress a gap which forms a liquid outflow path between the absorbent article and the skin of a wearer, waist gathers are provided at a portion around the abdomen of the wearer, and leg gathers are provided at a position around the root portions of the legs of the wearer.

Disclosure of Invention

These gathers can be formed by adhering the stretchable member to the sheet of the absorbent article, but there is a possibility that the contractive force of the stretchable member is transmitted to the absorbent body and the absorbent body is deformed.

The utility model provides an absorbent article capable of inhibiting the occurrence of a shape of an absorbent body.

An absorbent article according to one embodiment of the present utility model has a length along a width direction orthogonal to a longitudinal direction, and includes an absorber, an outer sheet, a stretchable member, and a non-adhesive layer. The absorbent body is configured to have an absorbent core and a core wrap sheet and to absorb discharged liquid discharged from a wearer. The absorbent core has a narrowed portion that narrows in the width direction. The core wrap sheet is configured to cover the absorbent core. The outer sheet is disposed on the non-skin surface side of the absorbent body. The stretchable member is configured to stretch in the width direction by being bonded to the region of the outer sheet in an extended state. The non-adhesive layer is disposed between the absorbent core and the extensible member.

Further, the absorbent article according to one embodiment of the present utility model may have a water impermeable sheet disposed between the absorber and the outer sheet. The extensible member may be the 1 st extensible member that traverses the absorbent core in a planar view. The non-adhesive layer may be a layer where the water impermeable sheet and the outer sheet are not adhered.

Further, the absorbent article according to one embodiment of the present utility model may have a 2 nd stretchable member that is bonded in an elongated state to a region of the outer sheet overlapping the absorbent core and is stretchable in the width direction when viewed in plan. The water impermeable sheet and the outer sheet may be bonded to each other in the region where the 2 nd stretchable member overlaps the absorbent core.

In the absorbent article according to one embodiment of the present utility model, the core wrap sheet and the absorbent core may be non-bonded in the region where the 2 nd stretchable member overlaps the absorbent core.

In the absorbent article according to one embodiment of the present utility model, the core wrap sheet and the water impermeable sheet may be bonded to each other in a region where the 2 nd stretchable member overlaps the absorbent core.

In the absorbent article according to one embodiment of the present utility model, the non-adhesive layer may be a layer in which the absorbent core and the core wrap sheet are not adhered, or a layer in which the core wrap sheet and the outer sheet are not adhered.

In the absorbent article according to one aspect of the present utility model, the non-adhesive layer may have a longitudinal portion extending in the longitudinal direction, and the longitudinal portion may include at least a region overlapping the stretchable member when viewed in a plane.

In the absorbent article according to one embodiment of the present utility model, the stretchable member may be disposed so as to include a region overlapping the absorbent core when viewed in a plane.

In the absorbent article according to one aspect of the present utility model, the absorbent core may include an upper absorbent pad having a narrowed portion that narrows in the width direction, and a lower absorbent pad disposed on the non-skin surface side of the upper absorbent pad and having a length in the width direction that is the same as a length in the width direction of the narrowed portion of the upper absorbent pad. The non-skin side of the lower absorbent pad may be bonded to the core wrap sheet at the widthwise ends. The upper layer absorbent pad may have: the non-skin-side region of the upper absorbent pad is bonded to the 1 st bonding region of the core-wrap sheet in the vicinity of the widthwise end portion of the lower absorbent pad, and the non-skin-side region of the upper absorbent pad is not bonded to the 1 st non-bonding region of the core-wrap sheet in the outer side in the widthwise direction than the region in the vicinity of the widthwise end portion of the lower absorbent pad. The 1 st adhesive region and the 1 st non-adhesive region may extend in the longitudinal direction, respectively. In the case of planar view, the stretchable member may overlap the 1 st non-adhesive region.

In the absorbent article according to one embodiment of the present utility model, the lower absorbent pad may have a 2 nd non-bonded region where the non-skin surface side of the lower absorbent pad is not bonded to the core wrap sheet. The stretchable member may overlap the 2 nd non-bonded region in a planar view near the longitudinal end portion of the lower absorbent pad.

In the absorbent article according to one embodiment of the present utility model, the stretchable member may be disposed so as to overlap the upper absorbent pad and overlap the core wrap sheet when viewed in a plane.

In the absorbent article according to one embodiment of the present utility model, the absorbent core may include an upper absorbent pad having a narrowed portion that narrows in the width direction, and a lower absorbent pad disposed on the non-skin surface side of the upper absorbent pad and having a length in the width direction that is the same as a length in the width direction of the narrowed portion of the upper absorbent pad. The non-skin side of the lower absorbent pad may be bonded to the core wrap sheet at the widthwise ends. The upper layer absorbent pad may have: the non-skin-side region of the upper absorbent pad is bonded to the 3 rd bonding region of the core-wrap sheet in the vicinity of the widthwise end portion of the lower absorbent pad, and the non-skin-side region of the upper absorbent pad is not bonded to the 3 rd non-bonding region of the core-wrap sheet in the outer side in the widthwise direction than the region in the vicinity of the widthwise end portion of the lower absorbent pad. The 3 rd bonding region and the 3 rd non-bonding region may extend in the longitudinal direction, respectively.

In the absorbent article according to one embodiment of the present utility model, the one end portion of the stretchable member may be disposed so as not to overlap the upper absorbent pad and so as to overlap the core wrap sheet when viewed in plan.

The absorbent article according to one embodiment of the present utility model may have a water impermeable sheet disposed between the absorber and the outer sheet. The non-skin side of the core wrap sheet may have a 4 th adhesive region adhered to the water impermeable sheet. The 4 th adhesive region may extend in the longitudinal direction and be provided at intervals in the width direction. The non-adhesive layer may include a 4 th non-adhesive region, which is a region between 4 th adhesive regions disposed at intervals in the width direction. The absorbent article according to one embodiment of the present utility model may further include an inner cover sheet disposed between the water-impermeable sheet and the outer cover sheet. The non-skin-side of the water-impermeable sheet may have a 5 th adhesive region adhered to the inner cover sheet. The 5 th adhesive region may extend in the width direction and be provided at intervals in the longitudinal direction. The non-adhesive layer may include a 5 th non-adhesive region, and the 5 th non-adhesive region is a region between 5 th adhesive regions disposed at intervals in the longitudinal direction.

According to the absorbent article of one embodiment of the present utility model, occurrence of a shape of the absorbent body can be suppressed.

Drawings

Features, advantages, and technical and industrial significance of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings, in which like elements are designated by like reference numerals, and in which:

fig. 1 is an external perspective view of a diaper according to embodiment 1.

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

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

Fig. 4 is a diagram illustrating the arrangement of the absorber and the rubber threads in the diaper of embodiment 1.

Fig. 5 is a cross-sectional view of the diaper according to embodiment 1 in the width direction.

Fig. 6 is a diagram illustrating the arrangement of the absorber and the rubber threads in the diaper according to embodiment 2.

Fig. 7A is a cross-sectional view of the diaper of embodiment 2 taken in the width direction.

Fig. 7B is a cross-sectional view of the diaper of embodiment 2 along the width direction.

Detailed Description

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

Embodiment 1 >

Fig. 1 is a perspective view of a pants-type disposable diaper for adults (hereinafter, simply referred to as "diaper") according to embodiment 1. In a diaper, a direction connecting a front body disposed to face an abdomen of a wearer and a rear body disposed to face a back is taken as a longitudinal direction. The crotch portion disposed in the crotch (disposed opposite to the crotch) of the wearer is located 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 wearer wears the diaper, the side facing the skin of the wearer is referred to as the skin-facing side, and the opposite side to the skin-facing side is referred to as the non-skin-facing 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. Further, the thickness direction is to be viewed as a plane. The diaper 1 has a length along the longitudinal direction and a lateral width along the width direction orthogonal to the longitudinal direction, and is put on the crotch of the 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 the state where the wearer wears the diaper 1. For example, in the case of the left-right direction in the present application, the direction means a direction which coincides with the left-right direction of the wearer in a state where the wearer wears the diaper 1.

In the present embodiment, a pants-type disposable diaper having a tubular structure with an opening through which the abdominal region of the wearer enters and a pair of left and right openings through which the left and right lower limbs of the wearer pass is illustrated as an example of an absorbent article, 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, various absorbent articles such as a belt-type disposable diaper capable of wrapping the abdomen and crotch are included, and the belt-type disposable diaper is configured such that a belt fixed near one end portion of a sheet-like member that covers the crotch (pudendum) of a wearer from the front to the back is attached near the other end portion of the sheet-like member to form a tubular structure.

The diaper 1 has a crotch region 1B which covers a crotch region corresponding to a pudendum (crotch) of a wearer in a worn state, a front body region 1F which is a region corresponding to a front body at a waistline of the wearer and is used to cover an abdomen side (umbilical lower portion) of the wearer, and a back body region 1R which is a region corresponding to a back body at a waistline of the wearer and is used to cover a back side (buttock) of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B, and the rear body region 1R is located on the rear side of the crotch region 1B. Since the diaper 1 in the present embodiment is a pants-type disposable diaper, the left edge of the front body region 1F and the left edge of the rear body region 1R are joined to each other, and the right edge of the front body region 1F and the right edge of the rear body region 1R are joined to each other. Thus, in the diaper 1, the waist-abdomen opening 2T is formed by the upper edge of the front body region 1F and the upper edge of the rear body region 1R. In the diaper 1, a left leg opening 2L is formed in a left portion of the crotch region 1B where the above-described joining is not performed, and a right leg opening 2R is formed in a right portion of the crotch region 1B. When the diaper 1 is worn with the left lower limb of the wearer inserted through the left lower limb opening 2L, the right lower limb of the wearer inserted through the right lower limb opening 2R, and the waist and abdomen of the wearer entering the waist and abdomen opening 2T, the diaper 1 is fixed to the wearer's body in a state in which the front body region 1F is disposed on the abdomen side of the wearer, the rear body region 1R is disposed on the back side of the wearer, and the left lower limb opening 2L and the right lower limb opening 2R are disposed around 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.

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 becomes a flow-out path of liquid between the diaper 1 and the skin of the wearer, the three-dimensional gather 3BL is provided in the left leg opening 2L around the thigh of the left leg of the wearer, the three-dimensional gather 3BR is provided in the right leg opening 2R around the thigh of the right leg of the wearer, and the waist gather 3R is provided in a portion around the abdomen of the wearer. Further, leg gathers 3LL, 3LR are provided at positions around 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 rubber threads. 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 liquid discharged from the pudendum of the wearer is absorbed by the absorber of the diaper 1 almost without leaking out from the diaper 1.

The diaper 1 can be used in combination with an inner pad, not shown. The inner pad is a substantially rectangular absorbent article having an absorber, and absorbs discharged liquid. When the combined diaper 1 and inner pad is used, the inner pad is placed on the skin surface side of the diaper 1 so as to be in contact with the discharge hole of the wearer. The discharged liquid is first absorbed by the inner pad, and only the discharged liquid which cannot be absorbed by the inner pad reaches the absorber of the diaper 1 and is then 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 the discharged liquid is generated, so that nursing cost can be reduced. In addition, the diaper 1 can be used for a long period of time.

Fig. 2 is an exploded perspective view of the diaper 1 of 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 that are attached together to form the outer surface of the diaper 1, and are identical in shape except for the front body region 1F-side end and the rear body region 1R-side end. In the state of wearing the 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 wearer side. Rubber threads for forming the waist gather 3R and the leg gathers 3LL, 3LR are provided between the cover sheet 4 and the inner cover sheet 5. Further, a stretchable member such as a belt-like rubber may be appropriately selected instead of the rubber wire.

For example, in order to suppress leakage of excrement, nonwoven fabrics composed of a liquid impermeable thermoplastic resin can be used as the material of the cover sheet 4 and the inner cover sheet 5. Here, examples of the liquid-impermeable thermoplastic resin include Polyethylene (PE) and polypropylene (PP). Hereinafter, as a concept corresponding to a combination of the absorbent body 8 and the backsheet 6 (an example of the "water impermeable sheet" in the present application), the top sheet 9, and the side sheets 10L and 10R, the cover sheet 4 and the inner cover sheet 5 each provided with a rubber string may be collectively referred to as an outer cover.

The diaper 1 has a backsheet 6, an absorber 8, and a topsheet 9 laminated in this order on the wearer-side surfaces of the cover sheet 4 and the inner cover sheet 5. The backsheet 6 is a substantially rectangular sheet having a length extending from the front body to the rear body of the wearer through the crotch in the longitudinal direction and a predetermined lateral width in the width direction perpendicular to the longitudinal direction. The absorber 8 and the top sheet 9 are sheet-like members having a substantially rectangular appearance like the backsheet 6, and are sequentially laminated on the backsheet 6 in a state where the longitudinal direction matches the longitudinal direction of the backsheet 6. The backsheet 6 is a sheet formed of a liquid impermeable thermoplastic resin as a material for suppressing leakage of excrement. The top sheet 9 is a sheet-like member disposed on the skin surface side of the wearer so as to cover the water absorbing 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 excreted from the wearer is absorbed by the absorbent body 8 through the top sheet 9 which can be brought into contact with the skin of the wearer. Examples of the liquid-permeable sheet include woven fabrics, nonwoven fabrics, and porous films. In addition, the topsheet 9 may have hydrophilic properties.

The absorber 8 has an absorbent core 8c constituted by one pad and a core wrap sheet 7 wrapping the absorbent core 8 c. The absorbent core 8c is of a substantially hourglass shape with narrowed portions. The absorbent core 8c has the following structure: in the gaps between the short fibers of cellulose fibers such as pulp fibers, rayon fibers, and cotton fibers and/or the short fibers obtained by hydrophilizing synthetic fibers such as polyethylene, polypropylene, and polyethylene terephthalate, a particulate absorbent resin (a high molecular weight water absorbing material) such as SAP (a superabsorbent polymer: super Absorbent Polymer) which is a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining water is held. When the absorbent core 8c absorbs liquid excreted from the wearer, the absorbent resin in the gaps held in the short fibers is inflated to hold the liquid in the short fibers. In the present embodiment, the absorbent core 8c is substantially hourglass-shaped narrowed in the width direction near the center of the crotch region 1B. The absorbent core 8c can take an appropriate shape according to the purpose. Examples of the shape of the absorbent core 8c include a rectangular shape, an elliptical shape, and various other shapes.

The core wrap sheet 7 is a thin liquid-permeable sheet, and by wrapping the absorbent core 8c with the core wrap sheet 7, the SAP of the absorbent core 8c is less likely to be mixed into other structures. In addition, the deformation of the absorbent core 8c can be suppressed. The core wrap sheet 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, but may be composed of 2 sheets, that is, an upper sheet (for example, an upper core wrap sheet 7f described later) disposed on the skin side of the wearer, and a lower sheet (for example, a lower core wrap sheet 7b described later) disposed on the non-skin side of the wearer and wound around the side surface and the skin side of the absorbent core 8 c. In the case where the core wrap sheet 7 is formed of 2 sheets, the width direction end portion of the upper side sheet may be wrapped with other sheets (for example, side sheets 10L and 10R, back sheet 6, and top sheet 9 described later). Further, since the absorber 8 is wrapped with the backsheet 6 and the topsheet 9, the shape of the absorber can be suppressed by these sheets, and therefore, the core wrap sheet 7 may not be provided.

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

The diaper 1 has elongated belt-shaped side panels 10L and 10R for forming the above-described three-dimensional gathers 3BL and 3BR. The side sheets 10L and 10R are provided on the long side of the top sheet 9. The rubber threads 10L1, 10R1 are bonded to the side panels 10L, 10R along the longitudinal direction. Thus, the edge 4F4 of the cover sheet 4, which is the left edge of the front body region 1F, and the edge 4R4, which is the left edge of the back body region 1R, are joined to each other, and the edge 4F5 of the cover sheet 4, which is the right edge of the front body region 1F, and the edge 4R5, which is the right edge of the back body region 1R, are joined to each other, so that the diaper 1 in the finished state shown in fig. 1 is obtained, and thus the side sheets 10L, 10R are pulled in the longitudinal direction by the contraction force of the rubber threads 10L1, 10R1 and rise from the top sheet 9 along the folding lines 10L2, 10R 2. 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 bonding method of the edge 4F4 and the edge 4R4, and the edge 4F5 and the edge 4R5 is not particularly limited, and can be performed by, for example, heat sealing, high-frequency sealing, ultrasonic sealing, or the like.

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

Fig. 3 is a view schematically showing a state in which the diaper 1 of embodiment 1 is developed and extended. Part (a) of fig. 3 schematically shows the internal structure in the case of the diaper 1 in the developed and elongated state as viewed from the left side. Part (B) of fig. 3 schematically shows a plan view of the diaper 1 in an unfolded and elongated state. In fig. 3 (B), the side panels 10L and 10R and the end panels 11L and 11R are not shown. One end side of the cover sheet 4 is folded back at folding lines 4FF and 4RF shown in fig. 2. The above-described waist gather 3R is formed by bonding rubber threads (linear rubber) 4F1, 4F2 to the front region of the cover sheet 4 and bonding rubber threads (linear rubber) 4R1, 4R2 to the rear region of the cover sheet 4. The rubber lines 4F1, 4F2 are provided in the order of the rubber lines 4F1, 4F2 from the folded line 4FF side along the folded line 4FF forming the upper edge of the precursor region 1F when folded back. The rubber threads 4R1, 4R2 are also provided in the order of the rubber threads 4R1, 4R2 from the folded-back thread 4RF side along the folded-back thread 4RF forming the upper edge of the rear body region 1R when folded back, as with the rubber threads 4F1, 4F 2.

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

The rubber wires 4F1, 4R1 are provided so as to extend in the left-right direction along the portions of the front body region 1F and the rear body region 1R that are the upper edges shown in fig. 1. The rubber wires 4F2, 4R2 are disposed in parallel with a predetermined interval. The rubber threads 4F1, 4R1 fasten the abdomen of the wearer relatively firmly above the rubber threads 4F2, 4R2 in the state of wearing the diaper 1. The rubber threads 4F1, 4R1 prevent the diaper 1 from being put on the wearer by being stuck to the wearer, and prevent leakage of discharged liquid from the abdomen and back. The rubber threads 4F2, 4R2 alleviate the sense of compression to the wearer caused by the contraction force of the rubber threads 4F1, 4R 1. In addition, in the case of using the inner pad, the displacement of the inner pad is suppressed.

Further, the rubber thread 4F3 (an example of the "1 st stretchable member" in the present application) and the rubber thread 4R3 (an example of the "2 nd stretchable member" in the present application) are bonded to the cover sheet 4. The rubber threads 4F3 and 4R3 are stretchable members provided in the crotch region 1B side of the rubber threads 4F2 and 4R2 in the cover sheet 4. The rubber thread 4F3 is provided so as to cross in the left-right direction in the crotch region 1B on the front body side. At the portion where the rubber thread 4F3 is provided so as to cross in the left-right direction in this way, the rubber thread 4F3 and the absorber 8 overlap in the thickness direction of the diaper 1. The widthwise central portion of such a cross-over region corresponds to the urethral orifice of the female wearer when the diaper 1 is worn. The arrangement of the rubber thread 4F3 in the region where the absorber 8 overlaps as viewed in the thickness direction is not limited to the case where it crosses as shown in fig. 3. As long as the extending direction of the rubber thread 4F3 has a component in the width direction, it is preferable that the width direction component in the extending direction of the rubber thread 4F3 is larger than the length direction component. The rubber thread 4R3 is arranged to be bent in the direction of the crotch region 1B, unlike other rubber threads bonded without interruption from the left end to the right end of the cover sheet 4, and overlaps with a part of the absorbent core 8c at the narrowed portion of the hourglass-shaped absorbent core 8 c. With this configuration, the arrangement region of the rubber threads 4F3, 4R3 can be caused to function as leg gathers.

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

In the present application, the state in which the sheets overlap is not limited to the state in which the overlapped sheets overlap each other in a state of being in contact with each other over the entire surface, and is a concept including a state in which part of the sheets overlap each other. For example, the end piece 11F is overlapped in a state where a part of one end side in the longitudinal direction of the back piece 6 is in contact with a part of the cover piece 4. In addition to the backsheet 6 and the topsheet 9 sandwiching the absorber 8, the cover sheet 4, the end sheets 11F, 11R, the inner cover sheet 5, and the side sheets 10L, 10R are laminated to form the diaper 1, so that the diaper 1 can be said to have a laminate in which the plurality of sheets are laminated.

Fig. 4 is a diagram illustrating the arrangement of the absorber and the rubber threads in the diaper 1 of embodiment 1. Fig. 4 shows a structure of the diaper 1 when viewed from the skin side, and for ease of explanation, the backsheet 6, the topsheet 9, the side panels 10L, 10R, the end panels 11F, 11R, and the like are omitted. The diaper 1 of the present embodiment has an outer sheet composed of 2 layers of sheets, i.e., a cover sheet 4 and an inner cover sheet 5. As described above, the inner cover sheet 5 is provided on the skin surface side of the cover sheet 4.

The absorbent body 8 is disposed on the outer sheet so that the longitudinal direction and the width direction thereof coincide with the longitudinal direction and the width direction of the diaper 1, and has an absorbent core 8c and a core wrap sheet 7. The absorbent core 8c has an abdomen 81, a 1 st widened portion 82, a crotch portion 83, a 2 nd widened portion 84, and a back portion 85, and the respective portions 81 to 85 are arranged in this order in the longitudinal direction. The abdomen 81 and the back 85 are, for example, substantially rectangular, and are the portions having the widest lateral width among the portions 81 to 85 of the absorbent core 8 c. The crotch portion 83 is, for example, substantially rectangular, and is the portion having the narrowest lateral width among the portions 81 to 85 of the absorbent core 8 c. That is, the crotch portion 83 can be said to be a narrowed portion of the absorbent core 8c (and thus the absorbent body 8). The 1 st widened portion 82 is a portion which is disposed between the crotch portion 83 and the abdomen portion 81 and whose lateral width is widened as going from the crotch portion 83 toward the abdomen portion 81. The 2 nd widened portion 84 is a portion which is disposed between the crotch portion 83 and the back portion 85 and whose lateral width is widened from the crotch portion 83 toward the back portion 85.

The plurality of rubber wires including the plurality of rubber wires 4F1, 4R1, the plurality of rubber wires 4F2, 4R2, and the plurality of rubber wires 4F3, 4R3 are disposed on the exterior sheet. The plurality of rubber threads 4F1, 4R1 extend from one end to the other end of the outer sheet in the width direction at the end of the outer sheet in the length direction. The plurality of rubber wires 4F1, 4R1 are arranged at intervals in the longitudinal direction. The rubber threads 4F1, 4R1 are folded back at the folding lines 4FF, 4RF in an elongated state by an adhesive such as hot melt, and are adhered to the non-skin-surface-side cover sheet 4 and the inner cover sheet 5 (see part (a) of fig. 3). As a result, the rubber wires 4F1, 4R1 can expand and contract in the width direction, and exert a contraction force that contracts inward in the width direction in the expanded state.

The plurality of rubber threads 4F2, 4R2 extend from one end to the other end of the outer sheet in the width direction in a region on the central side in the length direction of the outer sheet than the region where the rubber threads 4F1, 4R1 are arranged. The plurality of rubber wires 4F2, 4R2 are arranged at intervals in the longitudinal direction. The rubber threads 4F2, 4R2 are bonded to the cover sheet 4 and the inner cover sheet 5 in an elongated state by an adhesive such as hot melt (see part (a) of fig. 3). As a result, the rubber wires 4F2, 4R2 can expand and contract in the width direction, and exert a contraction force that contracts inward in the width direction in the expanded state. In addition, a part of the plurality of rubber threads 4F2, 4R2 overlaps with a part of the core wrap sheet 7 extending outward in the width direction of the ends in the longitudinal direction of the abdomen 81 and the back 85 and further of the ends in the longitudinal direction of the abdomen 81 and the back 85 in the absorbent core 8c in plan view. Thus, it can be said that the partial rubber threads 4F2 and 4R2 are arranged so as to include a region overlapping with the longitudinal ends of the abdomen 81 and the back 85 in a planar view.

The plurality of rubber threads 4F3, 4R3 extend from the widthwise end portions of the outer sheet to the widthwise end portions of the absorber 8 along the edges of the lower limb openings 2L, 2R in the region of the outer sheet on the central side in the longitudinal direction than the region where the rubber threads 4F2, 4R2 are arranged. The plurality of rubber wires 4F3, 4R3 are arranged at intervals in the longitudinal direction. The rubber thread 4F3 crosses the absorbent core 8c in the range from the 1 st widened portion 82 to the crotch portion 83. The rubber thread 4R3 is disposed at the center portion in the width direction at a distance from the crotch portion 83 to the 2 nd widened portion 84. Further, the inner sides of the plurality of rubber threads 4F3, 4R3 in the width direction extend in the substantially width direction at least in the area overlapping the core wrap sheet 7 and the absorbent core 8c (absorbent body 8) in a planar view. The rubber threads 4F3, 4R3 are bonded to the cover sheet 4 and the inner cover sheet 5 in an elongated state by an adhesive such as hot melt (see part (a) of fig. 3). Accordingly, the inner end portions in the width direction of the rubber wires 4F3, 4R3 can expand and contract in the substantially width direction, and in the expanded state, a contraction force that contracts to the substantially outer side in the width direction is exerted.

Further, a portion of the plurality of rubber threads 4F3, 4R3 other than the end portion on the inner side in the width direction, which does not overlap the core wrap sheet 7 in a planar view, extends along the edges of the lower limb openings 2L, 2R in a direction inclined with respect to the width direction. Thus, the contraction force exerted in the extended state by the portion other than the end portion on the inner side in the width direction includes a component that contracts in the longitudinal direction and a component that contracts in the width direction.

As described above, the rubber threads provided on the outer body exert a contractive force to help the diaper 1 to be brought into close contact with the skin of the wearer. For example, the absorber 8 can be brought into close contact with the skin of the wearer by the contraction force of the rubber threads 4F3, 4R 3. On the other hand, the absorbent core 8c is an aggregate of short fibers such as pulp fibers including particulate absorbent resin such as SAP, and therefore has low rigidity and is easy to form. If the contraction force due to the rubber threads is excessively applied to such an absorbent core 8c, the absorbent core 8c may be deformed. The diaper 1 of the present embodiment is provided with a non-adhesive layer formed between the absorbent core 8c and the rubber string.

As shown in fig. 4, the inner cover sheet 5 and the absorber 8 are non-bonded (as a non-adhesive layer 15) in the region where the rubber thread 4F3 crosses from the 1 st widened portion 82 to the crotch portion 83. In fact, in the non-adhesive layer 15, the inner covering sheet 5 and the backsheet 6 are non-adhesive. The non-adhesive layer 15 is a layer where the backsheet 6 and the inner covering sheet 5 of the outer sheet are not adhered. The non-adhesive layer 15 extends to the front body region side and the rear body region side of a portion where the rubber thread 4F3 crosses the crotch region 1B (hereinafter, this portion may be referred to as a crossing portion of the rubber thread 4F 3). In fig. 4, the non-adhesive layer 15 is illustrated in a line-coated manner. The non-adhesive layer 15 is provided over the entire width of the backsheet 6.

The non-adhesive layer 15 is formed so as to include the abdomen 81 side (the front body region side) of the extension region of the rubber thread 4F3, and has a component that stretches in the longitudinal direction of the diaper 1 on the outer side in the width direction of the portion where the rubber thread 4F3 crosses the absorber 8. Therefore, the outer sheet (the cover sheet 4 and the inner cover sheet 5) in the non-adhesive layer 15 is pulled toward the front body region side by the rubber string 4F3, and the inner body including the absorber 8 is pulled toward the front body region side by this outer body. The diaper 1 having such a configuration can suppress the absorber 8 from leaving the skin surface of the wearer by pulling up the absorber 8 on the skin surface side of the non-adhesive layer 15 toward the front body region side. Further, if the non-adhesive layer 15 is formed to include a portion closer to the front body region 1F than the extension region of the rubber thread 4F3, the non-adhesive layer can be pulled toward the front body region 1F by the rubber thread 4F3, and the absorber 8 can also be pulled toward the front body region 1F.

Further, the diaper 1 can suppress shrinkage of the absorber 8 at the cross portion of the rubber thread 4F3 by providing the non-adhesive layer 15. If the absorber contracts to contact the skin of the wearer, the wearer is uncomfortable and the wearing sensation is reduced. The diaper 1 of the present embodiment can suppress the reduction of the wearing sensation by suppressing the shrinkage of the absorber 8. In addition, there is a concern that pulp may be scattered if the absorber shrinks after absorbing urine. The diaper 1 of the present embodiment can suppress the shape of the absorber 8 by suppressing the shrinkage of the absorber 8.

The non-adhesive layer 15 is provided so as to include the crotch portion 83. As a result, even if the diaper 1 is deformed in the width direction of the absorber 8 in the crotch 83 by the legs of the wearer, the non-adhesive layer 15 is pulled up by the rubber threads 4F3, and the absorber 8 is pulled up, so that the absorber 8 can be pushed toward the skin side along the wearer, and the shape of the absorber 8 can be suppressed.

Fig. 5 is a cross-sectional view of the diaper according to embodiment 1 in the width direction. Fig. 5 is a cross-sectional view of the absorbent core 8c at the 2 nd widened portion 84. In fig. 5, the end pieces 11F and 11R are not shown for ease of explanation.

The absorbent core 8c is surrounded by a water permeable core wrap sheet 7. The core wrap sheet 7 is divided into an upper core wrap sheet 7f that is positioned on the skin side of the wearer when worn, and a lower core wrap sheet 7b that is positioned on the non-skin side of the wearer when worn. The upper core wrap sheet 7f and the lower core wrap sheet 7b are bonded to each other at the skin-surface side end portion of the absorbent core 8 c. The upper core wrap sheet 7f is adhered to the skin surface side of the absorbent core 8 c. The lower core wrap sheet 7b is adhered to the non-skin surface side of the absorbent core 8 c. The hot melt adhesive HM is applied between the lower core wrap sheet 7b and the absorbent core 8c so as to extend in the longitudinal direction of the diaper 1.

The backsheet 6 is a water impermeable film laminated on the non-skin surface side of the absorbent body 8, and prevents the discharged liquid that has permeated the absorbent body 8 from leaking out to the cover sheet 4 side. The backsheet 6 is wider than the absorbent core 8c, and is wrapped around the side surface of the absorbent core 8c and reaches the skin surface side. The diaper 1 is coated with a hot melt adhesive HM for bonding the lower core wrap sheet 7b, which is the non-skin side of the absorbent body 8, and the backsheet 6. The hot melt adhesive HM is applied in a plurality of rows separately from each other.

The top sheet 9 is a water permeable sheet that contacts the skin surface of the wearer. When discharged from the wearer, the discharged liquid permeates the absorbent core 8c through the top sheet 9 and is absorbed. The top sheet 9 is also wider than the absorbent core 8c, and wraps around the side surface of the absorbent core 8c to reach the non-skin surface side. The top sheet 9 is laminated on the skin surface side of the absorbent body 8, more toward the skin surface side than the back sheet 6.

The side sheets 10L and 10R are water impermeable nonwoven fabric sheets disposed on both sides in the width direction of the absorber 8, and constitute a pair of side sheets covering the side surfaces in the width direction of the absorber 8. The side sheets 10L and 10R further stand up toward the skin surface side at the skin surface side end portion of the absorbent body 8 to form three-dimensional gathers 3BL and 3BR for preventing side leakage of discharged liquid. The side sheets 10L, 10R are laminated on the skin surface side of the top sheet 9 on the skin surface side of the absorber 8.

In the side surface portion of the absorber 8 of the diaper 1 in the present embodiment, a top sheet 9 and side sheets 10L and 10R made of nonwoven fabric are laminated on the further outer side of the backsheet 6 which is a water impermeable sheet. By covering the side surface of the absorber 8 with the nonwoven fabric sheets in this manner, the backsheet 6, which is a water impermeable film, can be prevented from directly contacting the skin surface of the wearer at the side surface portion of the absorber 8, and giving the wearer a feeling of discomfort. The side surface of the absorber 8 is covered with a plurality of sheets and reinforced, so that the absorbent core 8c can be prevented from being deformed.

The backsheet 6 is folded back toward the skin surface side at the widthwise end portion of the absorber 8 and extends toward the skin surface side of the absorber 8. The folded portion of the backsheet 6 covers the widthwise end portion of the absorber 8. A hot melt adhesive HM is applied between the backsheet 6 and the topsheet 9 so as to extend in the longitudinal direction of the diaper 1. By applying the hot melt adhesive, the backsheet 6 and the topsheet 9 are bonded to the skin surface side.

The side sheets 10L, 10R for forming the three-dimensional gathers 3BR, 3BL are disposed outside the center in the width direction of the diaper 1 and on the skin surface side of the top sheet 9. The hot melt adhesive HM is applied between the top sheet 9 and the side sheets 10L and 10R so as to extend in the longitudinal direction of the diaper 1. The side sheets 10L and 10R cover at least the widthwise ends of the top sheet 9 and the back sheet 6 at the lodging portions of the three-dimensional gathers 3BL and 3BR (the fixing portions, the end portions of the three-dimensional gathers 3BL and 3BR in the longitudinal direction).

In the case of the diaper 1 in plan view, the rubber thread 4R3 is bonded between the inner cover sheet 5 and the cover sheet 4 overlapped with the absorbent core 8c, and can stretch in the width direction. Here, the backsheet 6 and the inner cover sheet 5 are bonded in a region where the rubber thread 4R3 overlaps the absorbent core 8 c. In the present embodiment, the hot melt adhesive HM1 for bonding the backsheet 6 and the inner cover sheet 5 is applied in this range. In fig. 5, the space between the backsheet 6 and the inner cover sheet 5 is illustrated relatively widely, and accordingly, the adhesive HM1 is illustrated relatively thick, and in reality, there is little space between the backsheet 6 and the inner cover sheet 5, and the adhesive HM1 is a hot-melt adhesive having the same thickness as other adhesive portions.

The backsheet 6 and the absorber 8 also contract in the width direction by the contraction of the rubber thread 4R3, but by applying the adhesive HM1 to the extension of the rubber thread 4R3, the rigidity of this range is increased and contraction is difficult, and the shape of the absorber 8 can be suppressed.

In addition, in the case of planar view, the lower core wrap sheet 7b of the core wrap sheet 7 and the absorbent core 8c are non-bonded in the range where the rubber thread 4R3 overlaps the absorbent core 8 c. With this configuration, the diaper 1 does not transmit the contraction force of the rubber thread 4R3 to the absorbent core 8c on the widthwise end side which is liable to be deformed, and thus can suppress the deformation of the absorbent core 8 c.

In addition, in the case of planar observation, the lower core wrap sheet 7b and the backsheet 6 are bonded in the range where the rubber thread 4R3 overlaps the absorbent core 8c. In the present embodiment, the hot melt adhesive HM2 for bonding the lower core wrap sheet 7b and the backsheet 6 is applied in this range. The backsheet 6 and the absorber 8 also contract in the width direction by the contraction of the rubber thread 4R3, but by providing the adhesive HM2 in the extension range of the rubber thread 4R3, the rigidity of the range is increased and the contraction is difficult, and the shape of the absorber 8 can be suppressed.

Embodiment 2 >

Next, a diaper 1 according to embodiment 2 will be described. Fig. 6 is a diagram illustrating the arrangement of the absorber and the rubber threads in the diaper according to embodiment 2.

In the present embodiment, the absorber 8 has a plurality of pads. The absorbent body 8 has an absorbent core 8c composed of a plurality of pads and a core wrap sheet 7 wrapped around the absorbent core 8c. In the present embodiment, as shown in fig. 6, the absorbent core 8c has an upper absorbent pad 8a and a lower absorbent pad 8b. The upper layer absorbent pad 8a is substantially hourglass-shaped with narrowed portions, and the lower layer absorbent pad 8b is rectangular. The width of the lower absorbent pad 8b is substantially the same as the width of the narrowed portion of the upper absorbent pad 8 a. Thus, 2 layers of absorbent pads can be laminated to form the absorbent core 8c.

In the present embodiment, the rubber threads 4F3 and 4R3 are arranged to be bent in the direction of the crotch region 1B, unlike the other rubber threads bonded from the left end to the right end of the cover sheet 4, and overlap with a part of the core wrap sheet 7 at the narrowed portion of the hourglass-shaped absorbent core 8 c. One of the two widthwise outer ends of the plurality of rubber threads 4F3, 4R3 is disposed at the widthwise end of the outer sheet, and the other widthwise inner end is disposed at the widthwise end of the absorber 8. The end portions on the inner sides in the width direction of the plurality of rubber threads 4F3, 4R3 do not overlap the absorbent core 8c (the upper absorbent pad 8a and the lower absorbent pad 8 b) in plan view, but overlap the portions of the core wrap sheet 7 extending to the outer sides in the width direction of the 1 st and 2 nd widened portions 82, 84 in the absorbent core 8 c. The region where the ends of the plurality of rubber wires 4F3, 4R3 are disposed on the inner side in the width direction is not limited to the region on the outer side in the width direction of the 1 st widened portion 82 and the 2 nd widened portion 84. For example, part of the inner ends in the width direction of the plurality of rubber wires 4F3 may be disposed in the outer region in the width direction of the 1 st widened portion 82, and the other inner ends in the width direction may be disposed in the outer region in the width direction of the crotch portion 83; further, part of the inner ends in the width direction of the plurality of rubber threads 4R3 is disposed in the outer region in the width direction of the 2 nd widened portion 84, and the other inner ends in the width direction are disposed in the outer region in the width direction of the crotch portion 83. Further, the inner ends of the plurality of rubber wires 4F3, 4R3 in the width direction extend in the substantially width direction at least in the region overlapping the core-coating sheet 7 in a planar view. The region where the ends of the plurality of rubber wires 4F3, 4R3 on the inner side in the width direction are arranged is not limited to the 1 st widened portion 82 and the 2 nd widened portion 84.

Fig. 7A and 7B are cross-sectional views of the diaper according to embodiment 2 in the width direction. Fig. 7A is a cross-sectional view at the ends in the longitudinal direction in the abdomen 81 and the back 85 of the absorbent core 8c, and fig. 7B is a cross-sectional view at the 1 st widened portion 82 and the 2 nd widened portion 84 of the absorbent core 8 c. In fig. 7A, the end pieces 11F and 11R are not shown for ease of explanation.

The absorbent core 8c has: an upper absorbent pad 8a having a substantially hourglass shape and a narrowed portion narrowed in the width direction; and a rectangular lower absorbent pad 8b disposed on the non-skin surface side of the upper absorbent pad 8a, and having a lateral width substantially equal to the lateral width of the narrowed portion of the upper absorbent pad 8 a. In the central portion in the width direction of the absorbent core 8c, both the upper layer absorbent pad 8a and the lower layer absorbent pad 8b are provided over the entire absorbent core 8c in the longitudinal direction, and become high-order portions. In addition, the lower absorbent pad 8b is not provided in the portion other than the central portion in the width direction (so-called ear portion of the absorbent core 8 c: see fig. 6), and only the upper absorbent pad 8a is provided in the abdomen 81, the 1 st widened portion 82, the 2 nd widened portion 84, and the back portion 85 of the absorbent core 8c in the longitudinal direction, so that the lower order portion having low rigidity is formed. That is, the abdomen 81, the 1 st widened portion 82, the 2 nd widened portion 84, and the back portion 85 have both widthwise end portions of the upper layer absorbent pad 8a protruding outward in the width direction than the lower layer absorbent pad 8b like a eave.

The core wrap sheet 7 includes an upper core wrap sheet 7f covering the skin surface side of the upper absorbent pad 8a and a lower core wrap sheet 7b covering the non-skin surface side of the lower absorbent pad 8b. The upper core wrap sheet 7f has substantially the same lateral width as the absorbent core 8 c. On the other hand, the lower core wrap sheet 7b is wider in transverse width than the absorbent core 8c, and the lower core wrap sheet 7b covers not only the non-skin surface side of the lower absorbent pad 8b but also the side surfaces of the lower absorbent pad 8b and the upper absorbent pad 8a. The lower core wrap sheet 7b is folded back toward the skin surface side of the upper absorbent pad 8a, and covers the end portion of the upper absorbent pad 8a in the width direction on the skin surface side. The upper core wrap sheet 7f is adhered to the upper absorbent pad 8a by a plurality of adhesives HM. The lower core wrap sheet 7b is adhered to the lower absorbent pad 8b by a plurality of adhesives HM. The adhesive HM forms a plurality of adhesive layers for bonding the lower absorbent pad 8b and the lower core wrap sheet 7b. A non-adhesive layer is formed between the plurality of adhesive layers, in which the lower absorbent pad 8b and the lower core wrap sheet 7b are not adhered to each other. The lower core-covering sheet 7b is bonded to the upper core-covering sheet 7f by an adhesive, not shown. Thus, the absorbent core 8c is covered with the upper core wrap sheet 7f and the lower core wrap sheet 7b. This prevents the absorbent core 8c from being deformed, and prevents SAP particles from escaping from the absorbent core 8c to the outside.

However, as described above, the upper absorbent pad 8a extends outward in the width direction from the lower absorbent pad 8b in the abdomen 81, the 1 st widened portion 82, the 2 nd widened portion 84, and the back 85 of the absorbent core 8 c. The upper layer absorbent pad 8a is not bonded to the lower layer absorbent pad 8b in most of the area, but is bonded to the lower layer absorbent pad 8b in some of the area. That is, a part of the adhesive HM applied to both ends in the width direction of the lower absorbent pad 8b out of the plurality of adhesives HM adhering the lower absorbent pad 8b and the lower core cover sheet 7b exceeds the ends in the width direction of the lower absorbent pad 8b and is exposed to the outside in the width direction. The adhesive HM of the exposed portion is brought into contact with the non-skin surface side of the upper absorbent pad 8a by the pressure in the thickness direction at the time of forming the absorber 8 or the like. In this way, in the region near the both ends of the lower absorbent pad 8b in the width direction, an adhesive layer is formed by the adhesive HM of the exposed portion, in which the upper absorbent pad 8a and the lower core wrap sheet 7b are adhered. On the other hand, a non-adhesive layer NA1 is formed on the outer side in the width direction than the region where the adhesive layer is formed, in which the upper absorbent pad 8a and the lower core wrap sheet 7b are not adhered. The adhesive HM for bonding the lower absorbent pad 8b and the lower core wrap sheet 7b is applied so as to extend in the longitudinal direction and is applied at intervals in the width direction. Thus, the plurality of adhesive layers and the plurality of non-adhesive layers formed by the adhesive HM extend in the longitudinal direction over the entire absorbent core 8 c. The adhesive layer and the non-adhesive layer NA1 formed by the adhesive HM of the exposed portion also extend in the longitudinal direction at least in the abdomen 81, the 1 st widened portion 82, the 2 nd widened portion 84, and the back 85 of the absorbent core 8c, respectively.

The region outside the region where the adhesive layer is formed by the adhesive HM in the exposed portion in the width direction may be a non-adhesive region where the upper absorbent pad 8a and the lower core wrap sheet 7b are not adhered, but may be a non-adhesive region where the lower absorbent pad 8b and the lower core wrap sheet 7b are not adhered. In the case of planar view, the rubber threads 4F2, 4R2 (an example of the "stretchable member" in the present application) overlap with the abdomen 81 and the back 85 of the absorbent core 8c (the upper absorbent pad 8a and the lower absorbent pad 8 b) and the portion of the core wrap sheet 7 extending outward in the width direction of the abdomen 81 and the back 85 with respect to such a non-adhesive region. In planar view, the inner ends in the width direction of the rubber wires 4F3, 4R3 (an example of the "stretchable member" in the present application) overlap at the portions of the core coating sheet 7 extending outward in the width direction of the 1 st widened portion 82 and the 2 nd widened portion 84. Thus, it can be said that the non-adhesive layer NA1 is disposed between the upper layer absorbent pad 8a and the rubber threads 4F2, 4R2, and between the upper layer absorbent pad 8a and the widthwise inner ends of the rubber threads 4F3, 4R 3. Further, since the non-adhesive layer NA1 extends in the longitudinal direction, it can be said that it has a longitudinal portion extending in the longitudinal direction. The non-adhesive layer NA1 is disposed between the upper absorbent pad 8a and the rubber threads 4F2, 4R2, 4F3, and 4R3, and therefore, it can be said that the length portion of the non-adhesive layer NA1 includes at least the region overlapping the rubber threads 4F2, 4R2, 4F3, and 4R3 when viewed in plan.

The backsheet 6 is disposed on the non-skin surface side of the absorbent body 8. The backsheet 6 has a wider transverse width than the absorbent body 8, and the backsheet 6 covers not only the non-skin surface side of the absorbent body 8 but also both side surfaces of the absorbent body 8. The backsheet 6 is folded back toward the skin surface side of the absorbent body 8, and covers both ends in the width direction of the skin surface side of the absorbent body 8. By covering not only the non-skin-surface side surface of the absorbent body 8 but also the side surfaces of the absorbent body 8 with the backsheet 6 in this manner, the side surfaces of the absorbent core 8c are reinforced, and thus, the deformation at the end portions in the width direction of the absorbent core 8c can be suppressed.

The backsheet 6 is bonded to the lower core wrap sheet 7b of the absorbent body 8 by a plurality of adhesives HM. Thus, a plurality of adhesive layers are formed by the adhesive HM to adhere the lower core wrap sheet 7b and the backsheet 6. Further, non-adhesive layers are formed between the plurality of adhesive layers, respectively, in which the lower core wrap sheet 7b and the backsheet 6 are not adhered. The non-adhesive layer NA2 is formed on both end portions of the plurality of non-adhesive layers in the width direction of the backsheet 6, for example. The adhesive HM for bonding the lower core wrap sheet 7b and the backsheet 6 is applied so as to extend in the longitudinal direction and is applied at intervals in the width direction. Thus, the plurality of adhesive layers formed by the adhesive HM and the plurality of non-adhesive layers including the non-adhesive layer NA2 extend in the longitudinal direction.

The non-adhesive layer NA2 overlaps with the rubber threads 4F2, 4R2 at the abdomen 81 and the back 85 of the absorbent core 8c (the upper absorbent pad 8a and the lower absorbent pad 8 b) and at the portion of the core wrap sheet 7 extending outward in the width direction of the abdomen 81 and the back 85 in plan view. The non-adhesive layer NA2 overlaps the ends of the rubber wires 4F3, 4R3 on the inner side in the width direction at the portions of the core coating sheet 7 extending to the outer sides in the width direction of the 1 st widened portion 82 and the 2 nd widened portion 84 in the planar view. Thus, it can be said that the non-adhesive layer NA2 is disposed between the upper layer absorbent pad 8a and the rubber threads 4F2, 4R2, and between the upper layer absorbent pad 8a and the widthwise inner ends of the rubber threads 4F3, 4R 3. Further, since the non-adhesive layer NA2 extends in the longitudinal direction, it can be said that it has a longitudinal portion extending in the longitudinal direction. The non-adhesive layer NA2 is disposed between the upper absorbent pad 8a and the rubber threads 4F2, 4R2, 4F3, and 4R3, and therefore, it can be said that the length portion of the non-adhesive layer NA2 includes at least the region overlapping the rubber threads 4F2, 4R2, 4F3, and 4R3 when viewed in plan.

The top sheet 9 is disposed on the skin surface side of the absorber 8. The top sheet 9 is wider in transverse width than the absorbent body 8, and the top sheet 9 covers not only the skin surface side of the absorbent body 8 but also both side surfaces of the absorbent body 8. The top sheet 9 is folded back toward the non-skin surface side of the absorbent body 8, and covers both ends in the width direction of the non-skin surface side of the absorbent body 8. By covering not only the skin-side surface of the absorbent body 8 but also the side surfaces of the absorbent body 8 with the top sheet 9 in this way, the side surfaces of the absorbent core 8c are reinforced, and thus, the deformation at the end portions in the width direction of the absorbent core 8c can be suppressed.

The side sheets 10L and 10R are disposed on the side surface side of the absorbent body 8, and further stand up to the skin surface side at the skin surface side end of the absorbent body 8, thereby forming three-dimensional gathers 3BL and 3BR for preventing side leakage of discharged liquid. The side sheets 10L and 10R also cover both side surfaces of the absorbent body 8 and extend to both end portions in the width direction on the non-skin surface side of the absorbent body 8. By covering the side surfaces of the absorbent body 8 with the side sheets 10L, 10R in this way, the side surfaces of the absorbent core 8c are reinforced, and thus, the deformation at the end portions in the width direction of the absorbent core 8c can be suppressed.

The composition in which the backsheet 6, the topsheet 9, and the side sheets 10L and 10R are combined with the absorbent body 8 is referred to herein as an absorbent pad. Such an absorbent pad is adhered to the skin surface side of the inner cover sheet 5 in the outer sheet by an adhesive, not shown. The adhesive for bonding the absorber pad and the exterior sheet is applied, for example, so as to extend in the width direction, and is applied at intervals in the longitudinal direction. The adhesive forms a plurality of adhesive layers for bonding the backsheet 6 in the absorbent pad and the inner cover sheet 5 in the outer cover sheet. The plurality of adhesive layers are arranged so as to extend in the width direction and are arranged so as to be spaced apart from each other in the longitudinal direction. Non-adhesive layers are formed between the plurality of adhesive layers, respectively, in which the backsheet 6 and the inner cover sheet 5 are not adhered. In the region where the non-adhesive layer extending in the width direction is formed, non-adhesive layers NA3 are formed on both end portions of the backsheet 6 in the width direction in the non-adhesive layer.

For example, as shown in fig. 7A and 7B, in the region outside the width direction of the region where the non-adhesive layer where the backsheet 6 and the inner cover sheet 5 are not adhered is formed, when the rubber threads 4F2, 4R2 and the rubber threads 4F3, 4R3 are arranged, the non-adhesive layer NA3 overlaps the rubber threads 4F2, 4R2 in the abdomen 81 and the back 85 of the absorbent core 8c (the upper absorbent pad 8a and the lower absorbent pad 8B) and in the portion of the core wrap sheet 7 extending outward in the width direction of the abdomen 81 and the back 85 when viewed in plan. The non-adhesive layer NA3 overlaps with the end portions of the rubber threads 4F3, 4R3 on the inner side in the width direction at the portion of the core coating sheet 7 extending to the outer side in the width direction of the 1 st widened portion 82 and the 2 nd widened portion 84 in the planar view. Thus, it can be said that the non-adhesive layer NA3 is disposed between the upper layer absorbent pad 8a and the rubber threads 4F2, 4R2, and between the upper layer absorbent pad 8a and the widthwise inner ends of the rubber threads 4F3, 4R 3.

As described above, for example, the rubber threads 4F2, 4R2 for forming the waist gathers 3R and the rubber threads 4F3, 4R3 for forming the leg gathers 3LL, 3LR are bonded to the outer sheet in an elongated state. Thereby, the rubber wires 4F2, 4R2 and the rubber wires 4F3, 4R3 exert contraction forces, respectively. A plurality of adhesive layers are formed between the outer sheet and the absorbent core 8c. The plurality of adhesive layers are specifically an adhesive layer formed between the inner cover sheet 5 and the backsheet 6, an adhesive layer formed between the backsheet 6 and the lower core wrap sheet 7b, and an adhesive layer formed between the lower core wrap sheet 7b and the lower absorbent pad 8 b. The contraction force generated by the rubber threads 4F2, 4R2 and the rubber threads 4F3, 4R3 is indirectly transmitted to the absorbent core 8c via these adhesive layers. However, since the rigidity of the absorbent core 8c itself is low, if the contraction force generated by the rubber threads 4F2, 4R2 and 4F3, 4R3 is excessively applied to the absorbent core 8c, the absorbent core 8c may be deformed.

In contrast, according to the present embodiment, there are a plurality of non-adhesive layers formed between the absorbent core 8c and the rubber threads 4F2, 4R2, 4F3, 4R 3. The plurality of non-adhesive layers are specifically a non-adhesive layer NA3 formed between the inner cover sheet 5 and the backsheet 6, a non-adhesive layer NA2 formed between the backsheet 6 and the lower core-wrap sheet 7b, and a non-adhesive layer NA1 formed between the lower core-wrap sheet 7b and the upper absorbent pad 8 a. By forming the non-adhesive layers NA1 to NA3 between the absorbent core 8c and the rubber threads 4F2, 4R2, 4F3, 4R3, the contraction force generated by the rubber threads 4F2, 4R2, 4F3, 4R3 is less likely to be transmitted by the respective non-adhesive layers NA1 to NA3, and as a result, is less likely to be transmitted to the widthwise end portions of the absorbent core 8 c. This can suppress the occurrence of deformation in the absorbent core 8 c. In particular, the upper absorbent pad 8a is provided only in the abdomen 81, the 1 st widened portion 82, the 2 nd widened portion 84, and the back portion 85 of the absorbent core 8c, and the rigidity is particularly low in the portions (ear portions) other than the central portion in the width direction of the absorbent core 8 c. Therefore, the formation of the non-adhesive layers NA1 to NA3 effectively suppresses the occurrence of the deformation of the upper absorbent pad 8 a.

Further, among the plurality of non-adhesive layers NA1 to NA3, for example, the non-adhesive layer NA1 extends in the longitudinal direction at least at the abdomen 81, the 1 st widened portion 82, the 2 nd widened portion 84, and the back portion 85 of the absorbent core 8 c. In addition, the non-adhesive layer NA2 extends in the longitudinal direction throughout the absorbent core 8 c. Therefore, not only in a region in which the linear region extending in the width direction, that is, the region short in the longitudinal direction, in which the rubber wires 4F2, 4R2 and 4F3 are provided, but also in a region in which the length is longer in the longitudinal direction than the length of the abdomen 81 and the 1 st widened portion 82, the length of the 2 nd widened portion 84 and the back portion 85 of the absorbent core 8c, or the length of the entire absorbent core 8c, the contraction force generated by the rubber wires 4F2, 4R2 and 4F3, 4R3 can be made difficult to be transmitted to the end portion of the absorbent core 8c in the width direction.

The widthwise inner ends of the rubber threads 4F3, 4R3 do not overlap with the upper absorbent pad 8a of the absorbent core 8c when viewed in plan. Therefore, the contraction force of the rubber threads 4F3, 4R3 is hard to be transmitted to the widthwise end portions of the upper absorbent pad 8 a. Further, since the non-adhesive layers NA1 to NA3 are provided between the absorbent core 8c and the rubber threads 4F3, 4R3, the contraction force of the rubber threads 4F3, 4R3 is more difficult to be transmitted to the widthwise end portions of the upper absorbent pad 8 a. Therefore, the occurrence of deformation of the upper absorbent pad 8a can be further effectively suppressed.

Modification of the embodiment

In the foregoing embodiment, the 3 non-adhesive layers NA1 to NA3 are formed between the absorbent core 8c and the rubber threads 4F2, 4R2 and between the absorbent core 8c and the rubber threads 4F3, 4R3, but not limited thereto. For example, any one of the non-adhesive layers NA1 to NA3 or any two of the non-adhesive layers NA1 to NA3 may be formed between the absorbent core 8c and the rubber threads 4F2, 4R2, 4F3, 4R 3. By forming at least one of the non-adhesive layers NA1 to NA3, the contraction force generated by the rubber strings 4F2, 4R2 and 4F3, 4R3 can be made difficult to be transmitted to the widthwise end portion of the absorbent core 8 c.

In the above-described embodiment, the entire surface of the absorbent core 8c is covered with a plurality of core wrap sheets such as the upper core wrap sheet 7f and the lower core wrap sheet 7b, but the present invention is not limited to this configuration. For example, a structure in which the entire surface of the absorbent core 8c is covered with 1 core-covering sheet may be employed, or a structure in which only a part of the absorbent core 8c is covered with 1 or more core-covering sheets may be employed.

The embodiments and application examples disclosed above can be combined.

Claims

1. An absorbent article having a length along a longitudinal direction and a length along a width direction orthogonal to the longitudinal direction, the absorbent article comprising:

an absorber (8) configured to have an absorbent core having a narrowed portion narrowed in the width direction and a core-wrapping sheet configured to cover the absorbent core and to absorb discharged liquid discharged from a wearer;

an outer sheet disposed on the non-skin surface side of the absorbent body (8);

a stretchable member (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) that is bonded to at least a part of the outer sheet in an extended state and is stretched in the width direction; and

And a non-adhesive layer provided between the absorbent core and the stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3).

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

further comprising a water impermeable sheet (6) disposed between the absorber (8) and the outer sheet;

the extensible members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) are the 1 st extensible members that traverse the absorbent core in a planar view;

the non-adhesive layer is a layer in which the water-impermeable sheet (6) and the exterior sheet are not adhered.

3. The absorbent article of claim 2,

a 2 nd stretchable member configured to be stretched in the width direction while being bonded in an elongated state to a region of the outer sheet overlapping the absorbent core in a planar view;

the water impermeable sheet (6) is bonded to the outer sheet in a region where the 2 nd stretchable member overlaps the absorbent core.

4. The absorbent article of claim 3,

the core wrap sheet and the absorbent core are non-bonded in the region where the 2 nd stretchable member overlaps the absorbent core.

5. The absorbent article of claim 3,

The core wrap sheet is bonded to the water impermeable sheet (6) in a region where the 2 nd stretchable member overlaps the absorbent core.

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

the non-adhesive layer is a layer in which the absorbent core and the core wrap sheet are not adhered, or a layer in which the core wrap sheet and the exterior sheet are not adhered.

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

the non-adhesive layer has a length portion extending in the longitudinal direction, the length portion including at least a region overlapping the stretchable member (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) in plan view.

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

the stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) are disposed so as to include a region overlapping the absorbent core when viewed in plan.

9. The absorbent article of claim 8,

the absorbent core includes an upper layer absorbent pad having the narrowed portion narrowed in the width direction, and a lower layer absorbent pad disposed on a non-skin surface side of the upper layer absorbent pad and having a length in the width direction that is the same as a length in the width direction of the narrowed portion of the upper layer absorbent pad;

The non-skin-surface side of the lower absorbent pad is bonded to the core-wrap sheet at the end in the width direction;

the upper layer absorbent pad has: the non-skin-side region of the upper absorbent pad is bonded to the 1 st bonding region of the core-wrap sheet in the vicinity of the end portion of the lower absorbent pad in the width direction, and the non-skin-side region of the upper absorbent pad is not bonded to the 1 st non-bonding region of the core-wrap sheet in the outer side of the region of the lower absorbent pad in the vicinity of the end portion of the lower absorbent pad in the width direction;

the 1 st bonding region and the 1 st non-bonding region extend in the length direction, respectively;

the stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) overlap the 1 st non-adhesive region when viewed in plan.

10. The absorbent article of claim 9,

the lower layer absorbent pad has a 2 nd non-bonded region of the non-skin side of the lower layer absorbent pad not bonded to the core wrap sheet;

in the vicinity of the longitudinal end portion of the lower absorbent pad, the stretchable member (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) overlaps the 2 nd non-adhesive region in plan view.

11. The absorbent article of claim 9,

the stretchable members (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) are arranged so as to overlap the upper absorbent pad and overlap the core wrap sheet when viewed in plan.

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

the upper layer absorbent pad has: the non-skin-side region of the upper absorbent pad is bonded to the 3 rd bonding region of the core-wrap sheet in the vicinity of the end portion of the lower absorbent pad in the width direction, and the non-skin-side region of the upper absorbent pad is not bonded to the 3 rd non-bonding region of the core-wrap sheet in the outer side of the region of the lower absorbent pad in the vicinity of the end portion of the lower absorbent pad in the width direction;

The 3 rd bonding region and the 3 rd non-bonding region extend in the longitudinal direction, respectively.

13. The absorbent article of claim 12,

in a planar view, one end portion of the stretchable member (4F 1, 4F2, 4F3, 4R1, 4R2, 4R 3) is disposed so as not to overlap the upper layer absorbent pad and so as to overlap the core wrap sheet.

14. The absorbent article of claim 13,

the non-skin surface side of the core wrap sheet has a 4 th bonding area bonded to the water-impermeable sheet (6);

the 4 th adhesive region extends in the longitudinal direction and is provided at intervals in the width direction;

the non-adhesive layer includes a 4 th non-adhesive region, and the 4 th non-adhesive region is a region between the 4 th adhesive regions provided at intervals in the width direction.

15. The absorbent article of claim 14,

further comprising an inner cover sheet (5) disposed between the water-impermeable sheet (6) and the outer cover sheet;

the non-skin surface side of the non-water permeable sheet (6) has a 5 th adhesive region adhered to the inner cover sheet (5);

The 5 th adhesive region extends in the width direction and is provided at intervals in the longitudinal direction;

the non-adhesive layer includes a 5 th non-adhesive region, and the 5 th non-adhesive region is a region between the 5 th adhesive regions provided at intervals in the longitudinal direction.