Absorbent articles

Abstract

To provide a technique capable of improving an adhesion property to a wearer's urethral opening.SOLUTION: An absorbent article comprises: an absorber provided at a position including a crotch area, and capable of absorbing a wearer's excreted liquid; an exterior body having a waist opening part through which a wearer's abdominal girth can be inserted and two leg opening parts through which wearer's legs can be inserted, disposed on a non-skin surface side of the absorber; a pair of right and left first grooves, first grooves formed on the absorber, extending in an end direction of a front body area side from the crotch area outwardly from the center in a width direction in respective areas corresponding to inguinal part sides of the wearer; and a non-adhesion area, in which the absorber and the exterior body are non-adhesive to each other, provided including an area where the first grooves overlap when an area where the first grooves are provided is seen in plan view.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to absorbent articles.

Background Art

[0002] Absorbent articles such as disposable diapers, urine pads, and sanitary products have been developed (for example, see Patent Document 1). Patent Document 1 discloses a pant-type disposable diaper.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Absorbent articles are required to have a function of absorbing and holding urine discharged by a wearer. In order to absorb urine, it is preferable that the absorbent article has high adhesion to the urethral orifice of the wearer. There is room for improvement in enhancing the adhesion of the absorbent article to the urethral orifice of the wearer.

[0005] An object of the present invention is to provide a technique capable of improving the adhesion of the absorbent article to the urethral orifice of the wearer.

Means for Solving the Problems

[0006] Specifically, the absorbent article according to the present invention is an absorbent article provided with a front body region located on the abdominal side of the wearer, a crotch region located under the crotch, and a back body region located on the back side in this order in the longitudinal direction in a worn state, and having a length along the longitudinal direction and a length along the width direction orthogonal to the longitudinal direction, the absorbent article including an absorber provided at a position including the crotch region and capable of absorbing the discharged liquid of the wearer, a waist opening through which the waist circumference of the wearer can be inserted, and the legs of the wearer inserted An outer casing having two leg openings through which the wearer can pass, positioned on the non-skin side of the absorbent material, and a pair of left and right first grooves formed in the absorbent material, extending outward from the center in the width direction from the crotch area toward the front body area side edge in a region corresponding to the wearer's groin, and a plan view of the region where the first grooves are provided The place The unit includes a non-adhesive region in which the first groove overlaps, and in which the absorber and the outer casing are not adhered.

[0007] Furthermore, in the absorbent article described above, the non-adhesive region may extend in the width direction and have a substantially rectangular shape.

[0008] Furthermore, the absorbent article may include a first expandable member that is adhered to the exterior body in an extended state in a region overlapping the non-adhesive region when viewed from above, and the end of the first expandable member may be positioned at the end in the width direction of the leg opening.

[0009] Furthermore, in the absorbent article described above, the first stretchable member may be provided on the front body region side along one of the leg openings, cross the crotch region in the non-adhesive region, and extend along the other leg opening.

[0010] Furthermore, the absorbent article may have a second groove formed in the absorbent material, comprising a pair of left and right second grooves extending along the longitudinal direction in a region corresponding to the wearer's urethral opening.

[0011] Furthermore, in the absorbent article described above, the first groove and the second groove may be compression grooves.

[0012] Furthermore, in the absorbent article described above, the first groove and the second groove may be adjacent with a gap between them, or they may be connected.

[0013] Furthermore, in the absorbent article described above, the non-adhesive region may include a region that overlaps with the front body region side end of the second groove when viewed from above.

[0014] Furthermore, in the absorbent article described above, the absorbent material may have a second groove, a pair of left and right second grooves extending along the longitudinal direction in a region corresponding to the wearer's urethral opening, and the first expandable member may be positioned to include a region that overlaps with the front body region of the second groove when viewed from above.

[0015] Furthermore, the absorbent article may include a highly rigid portion formed in the absorbent body, which is positioned on the rear body region side of the second groove and extends in the width direction.

[0016] Furthermore, in the above-mentioned absorbent article, the high-rigidity portion may be a compression groove.

[0017] Furthermore, in the absorbent article described above, the high-rigidity portion may be connected to the second groove.

[0018] Furthermore, in the absorbent article described above, the high-rigidity portion may be positioned in a region corresponding to the wearer's anus.

[0019] Furthermore, in the absorbent article described above, the second groove may be positioned on the front body area side of the area corresponding to the wearer's anus.

[0020] Furthermore, the absorbent article may be attached to the outer casing in an extended state and may include a second stretchable member that pulls the area corresponding to the wearer's anus in the width direction.

[0021] Furthermore, the absorbent article may include a third expandable member that is bonded to the non-skin side of the absorbent material in an extended state in the longitudinal direction, and is positioned in a region overlapping between the pair of second grooves, and expands and contracts in the longitudinal direction.

[0022] In addition, in the absorbent article described above, the third elastic member may extend including between the pair of left and right first grooves when viewed in a plan view.

[0023] In addition, in the absorbent article described above, the third elastic member may be disposed closer to the front body region side than the region corresponding to the anus of the wearer.

[0024] In addition, in the absorbent article described above, in the region corresponding to the anus of the wearer, the third elastic member and the absorber may be non-adhesive.

[0025] In addition, the absorbent article described above includes a water-impermeable sheet disposed between the absorber and the outer wrapper. The absorber has an absorbent core and a water-permeable sheet that wraps the absorbent core. The third elastic member may be disposed between the absorber and the water-impermeable sheet, adhered to the water-impermeable sheet, and non-adhesive to the absorber.

[0026] In addition, the absorbent article described above is disposed between the third elastic member and the absorber, and includes an elastic member cover sheet that covers the third elastic member. The elastic member cover sheet may be non-adhesive to the absorber.

[0027] In addition, in the absorbent article described above, the first elastic member may be provided so as to cross the crotch region on the rear body region side rather than the end portion on the rear body region side of the first groove.

[0028] In addition, in the absorbent article described above, the non-adhesive region extends closer to the front body region side than the portion where the first elastic member crosses the crotch region, and the first elastic member may have a component in the longitudinal direction on the outer side in the width direction than the absorber.

[0029] In addition, in the absorbent article described above, when the wearer is a female, the portion where the first elastic member crosses the crotch region may include a region corresponding to the urethral orifice.

[0030] Furthermore, in the absorbent article described above, if the wearer is male, the portion of the first stretchable member that crosses the crotch area may be closer to the crotch area than the portion corresponding to the penis. [Effects of the Invention]

[0031] According to the present invention, it is possible to improve the degree of contact with the wearer's urethral opening. [Brief explanation of the drawing]

[0032] [Figure 1] Figure 1 is a perspective view of a diaper according to Embodiment 1. [Figure 2] Figure 2 is an exploded perspective view of the diaper according to Embodiment 1. [Figure 3] Figure 3 is an exploded view of the diaper according to Embodiment 1. [Figure 4] Figure 4 is an unfolded view showing the absorbent material removed from the diaper according to Embodiment 1. [Figure 5] Figure 5 is a cross-sectional view of the diaper according to Embodiment 1 when it is cut in the width direction along line AA in Figure 3. [Figure 6] Figure 6 is a cross-sectional view of the diaper according to Embodiment 1 when it is cut in the width direction along the line BB in Figure 3. [Figure 7] Figure 7 is an exploded perspective view of the diaper according to Embodiment 2. [Modes for carrying out the invention]

[0033] <Embodiment 1> A diaper according to an embodiment of the present invention will be described below with reference to the drawings. Note that the configurations of the following embodiments are illustrative, and the present invention is not limited to these embodiments.

[0034] Figure 1 is an example of a perspective view of an adult disposable pant-type diaper (hereinafter simply referred to as "diaper") according to Embodiment 1. In the diaper, the direction connecting the front panel, which is positioned opposite the wearer's abdomen, and the back panel, which is positioned opposite the wearer's back, is defined as the longitudinal direction (also called the front-to-back direction). Between these front panel (one side in the longitudinal direction) and back panel (the other side in the longitudinal direction) (in the center in the longitudinal direction) lies the inseam section, which is positioned between the wearer's legs (opposite the crotch). Furthermore, when the diaper is worn by the wearer, the side facing the wearer's skin is defined as the skin-facing side, and the side opposite the skin-facing side is defined as the non-skin-facing side. In addition, the direction connecting the skin-facing side and the non-skin-facing side is defined as the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is defined as the width direction (also called the left-to-right direction). Moreover, viewing from the thickness direction is defined as a plan view. Diaper 1 has a length along its longitudinal direction and a width along a width direction perpendicular to its longitudinal direction, and is worn between the legs of the wearer. Furthermore, the terms related to direction used in this application refer to directions that coincide with the front, back, left, and right of the wearer when diaper 1 is worn by the wearer. For example, when referring to the left and right direction in this application, it means directions that coincide with the left and right of the wearer when diaper 1 is worn by the wearer.

[0035] In this embodiment, as an example of an absorbent article, a disposable pant-type diaper with a tubular structure having a waist opening through which the wearer's waist can be inserted and a pair of left and right leg openings through which the wearer's left and right lower limbs can be inserted is exemplified. Furthermore, although this embodiment exemplified an adult disposable pant-type diaper, the term "absorbent article" as used in this application is not limited to adult disposable pant-type diapers. The term "absorbent article" as used in this application includes disposable pant-type diapers for children.

[0036] Diaper 1 has a crotch region 1B, which is the part that covers the wearer's genitals (crotch) when worn; a front body region 1F, which is the part that covers the wearer's abdominal side and is the part that covers the wearer's waist; and a back body region 1R, which is the part that covers the wearer's back and is the part that covers the wearer's waist. Here, the front body region 1F is located in front of the crotch region 1B, and the back body region 1R is located behind the crotch region 1B. In this embodiment, since diaper 1 is a pant-type disposable diaper, the left edge of the front body region 1F and the left edge of the back body region 1R are joined to each other, and the right edge of the front body region 1F and the right edge of the back body region 1R are joined to each other. Thus, a waist opening 2T (an example of a "waist opening" in this disclosure) is formed in diaper 1 by the upper edge of the front body region 1F and the upper edge of the back body region 1R. Furthermore, the diaper 1 has a left lower limb opening 2L formed on the left side of the crotch area 1B where the above-mentioned joint is not applied, and a right lower limb opening 2R formed on the right side of the crotch area 1B. When the diaper 1 is worn, the wearer's left lower limb is inserted through the left lower limb opening 2L, the wearer's right lower limb is inserted through the right lower limb opening 2R, and the wearer's torso is placed in the torso opening 2T. The front body area 1F is positioned on the wearer's abdominal side, the back body area 1R is positioned on the wearer's back side, and the left lower limb opening 2L and the right lower limb opening 2R are fixed to the wearer's body, surrounding the wearer's thighs. Because the diaper 1 is fixed to the wearer's body in this manner, the wearer can move freely while wearing the diaper 1. The left lower limb opening 2L and the right lower limb opening 2R are examples of the "two leg openings" in this disclosure.

[0037] Diaper 1 has an absorbent material that can absorb and retain liquid, mainly located around the crotch area 1B. In addition, to prevent the formation of gaps between diaper 1 and the wearer's skin that could become pathways for liquid leakage, diaper 1 is provided with a three-dimensional gather 3BL at the left lower limb opening 2L surrounding the thigh of the wearer's left lower limb, a three-dimensional gather (not shown) at the right lower limb opening 2R surrounding the thigh of the wearer's right lower limb, and waist gathers 3R and tummy gathers 12 around the wearer's waist. Furthermore, leg gathers 3LF and 3LR (leg gather 3LR is not shown in Figure 1) are provided around the base of the wearer's legs. The leg gather 3LF is provided in the front body area 1F, and the leg gather 3LR is provided in the back body area 1R. In Figure 1, only the leg gather 3LF is shown as an example. The 3D gathers 3BL, 3BR and waist gather 3R contract through the elastic force of the stretch material, conforming closely to the wearer's skin. In addition, the leg gathers 3LF, 3LR prevent gaps from forming between the wearer's groin and diaper 1. Therefore, the discharge from the wearer's genitals is absorbed into the absorbent material of diaper 1 with almost no leakage.

[0038] Diaper 1 can be used in combination with an inner pad (not shown). The inner pad is a roughly rectangular absorbent article equipped with an absorbent material that absorbs the wearer's waste. When using diaper 1 and the inner pad together, the inner pad is placed on the skin-facing side of diaper 1 so as to be in contact with the wearer's urinary tract. The waste is first absorbed by the inner pad, and only the waste that cannot be absorbed by the inner pad reaches the absorbent material of diaper 1 and is further absorbed. Therefore, even if the amount of waste is large, leakage from diaper 1 can be prevented. Also, if the amount of waste is small and can be completely absorbed by the inner pad... In some cases, even if fluid is discharged, only the inner pad needs to be replaced, thus reducing care costs. Furthermore, the frequency of changing diaper 1 is reduced, allowing diaper 1 to be used for longer periods.

[0039] Figure 2 is an example of an exploded perspective view of a diaper 1 according to Embodiment 1. The diaper 1 has a cover sheet 4 and an inner cover sheet 5. The cover sheet 4 and the inner cover sheet 5 are roughly hourglass-shaped (gourd-shaped) sheets that are bonded together to form the outer surface of the diaper 1, and are the same shape and almost the same size except for the ends on the front body region 1F side and the ends on the back body region 1R side. When worn by a person, the cover sheet 4 is laminated on the side that does not touch the wearer's skin, and the inner cover sheet 5 is laminated on the side that touches the wearer's skin. Between the cover sheet 4 and the inner cover sheet 5, there are stretchable members for forming a waist gather 3R, a tummy gather 12, and leg gathers 3LF and 3LR. In this embodiment, elastic thread is used as the stretchable member. Note that, instead of elastic thread, a stretchable member such as a strip of elastic can be appropriately selected.

[0040] The cover sheet 4 and inner cover sheet 5 can be made of a nonwoven fabric made of a liquid-impermeable thermoplastic resin, for example, in order to suppress leakage of waste. Examples of liquid-impermeable thermoplastic resins include polyethylene (PE) and polypropylene (PP). Hereinafter, the absorbent 8 and the absorbent 8 combined with the back sheet 6, top sheet 9, and side sheets 10L and 10R will be referred to as the inner body, and the cover sheet 4 and inner cover sheet 5 with the elastic threads arranged on them will be referred to as the outer body as a concept corresponding to the inner body (an example of "outer body" in this disclosure).

[0041] Diaper 1 has a back sheet 6, an absorbent body 8, and a top sheet 9, which are sequentially laminated on the wearer-side surfaces of the cover sheet 4 and the inner cover sheet 5. The back sheet 6 is a substantially rectangular sheet with a length in the longitudinal direction that extends from the wearer's front body through the crotch to the back body, and a predetermined width in the width direction perpendicular to the longitudinal direction. The absorbent body 8 and the top sheet 9 are both sheet-like members that have a substantially rectangular appearance similar to the back sheet 6, and are sequentially laminated on the back sheet 6 with their longitudinal directions coinciding with the longitudinal direction of the back sheet 6. The back sheet 6 is a sheet made of a non-permeable thermoplastic resin to suppress leakage of waste. The back sheet 6 is also provided with minute pores. The pores allow for ventilation while preventing liquid permeation. The pores are provided, for example, in the area that overlaps with the absorbent body 8. The top sheet 9 is a sheet-like member that is positioned on the wearer's skin side so as to cover the absorbent surface of the absorbent body 8. This top sheet 9 is permeable to liquid in part or all of its structure. Therefore, when diaper 1 is worn, liquids discharged from the wearer penetrate the absorbent material 8 through the top sheet 9, which may come into contact with the wearer's skin, and are absorbed there. Examples of liquid-permeable sheets include woven fabrics, nonwoven fabrics, and porous films. The top sheet 9 may also be hydrophilic.

[0042] The absorbent body 8 comprises an absorbent core 8c made of one mat and a core wrap sheet 7 (an example of the "water-permeable sheet" in this disclosure) that encloses the absorbent core 8c. The absorbent core 8c is roughly hourglass-shaped with a constricted portion. The absorbent core 8c has a structure in which granular absorbent resin (super absorbent polymer), such as SAP (Super Absorbent Polymer), a hydrophilic polymer with a cross-linked structure capable of absorbing and retaining water, is held in the gaps between short fibers of cellulosic fibers such as pulp fibers, rayon fibers, or cotton fibers, or synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate that have been treated to be hydrophilic. When the absorbent core 8c absorbs liquid discharged from the wearer, it swells the absorbent resin held in the gaps between the short fibers, thereby retaining the liquid within the short fibers. In this embodiment, the absorbent core 8c is roughly hourglass-shaped with a constriction near the center. The absorbent core 8c can take on an appropriate shape depending on the purpose. Examples of the shape of the absorption core 8c include rectangular, elliptical, and various other shapes.

[0043] The core wrap sheet 7 is a thin, liquid-permeable sheet. By wrapping the absorbent core 8c with the core wrap sheet 7, the SAP of the absorbent core 8c is less likely to mix with other structures. In addition, deformation of the absorbent core 8c is suppressed. The core wrap sheet 7 can be made of pulp fibers, and tissue paper can be used as an example. The core wrap sheet 7 may be a single sheet, or it may consist of two sheets: an upper sheet placed on the skin side of the wearer, and a lower sheet placed on the non-skin side of the wearer, which wraps around the sides of the absorbent core and the skin side. If the core wrap sheet 7 consists of two sheets, the widthwise end of the upper sheet may be wrapped around the other sheets (for example, the side sheets 10L, 10R, back sheet 6, and top sheet 9 described later). Note that the absorbent body 8 is wrapped around the back sheet 6 and top sheet 9, and deformation can also be suppressed by these sheets, so the core wrap sheet 7 may not be provided.

[0044] The back sheet 6, absorbent material 8, and top sheet 9 all extend from the front body region 1F to the back body region 1R. Therefore, when the back sheet 6, absorbent material 8, and top sheet 9 are layered to cover the wearer's genital area (crotch), the longitudinal ends of the back sheet 6, absorbent material 8, and top sheet 9 are located on the wearer's ventral and dorsal sides. In other words, the wearer's genital area is covered by the absorbent material 8 from the wearer's ventral to dorsal side. Therefore, whether the wearer is lying face down or face down when expelling fluid from the body, the expelled fluid will come into contact with the absorbent material 8 via the top sheet 9.

[0045] Furthermore, a thread elastic 4F7 (an example of the "third stretchable member" in this disclosure) is provided in the widthwise center between the back sheet 6 and the core wrap sheet 7, stretched longitudinally from the front body region 1F to the crotch region 1B. The thread elastic 4F7 is bonded to the back sheet 6 and, via the back sheet 6, is bonded to the inner cover sheet 5 and the cover sheet 4. The thread elastic 4F7 exerts a force that causes the inner cover sheet 5 and the cover sheet 4 to contract longitudinally. It is preferable that the area where the thread elastic 4F7 is provided is an area where the absorbent 8 and the inner cover sheet 5 are not bonded, but it may also be an area where the absorbent 8 and the inner cover sheet 5 are bonded. The thread elastic 4F7 may also be provided between the cover sheet 4 and the inner cover sheet 5.

[0046] Furthermore, a rubber thread cover sheet 13 (an example of the "stretchable member cover sheet" in this disclosure) is placed on the skin-facing side of the rubber thread 4F7. The rubber thread cover sheet 13 covers the rubber thread 4F7 from the skin-facing side and is adhered to the back sheet 6. The rubber thread cover sheet 13 is placed between the rubber thread 4F7 and the absorbent body 8. Also, the rubber thread cover sheet 13 is not adhered to the core wrap sheet 7 of the absorbent body 8. The rubber thread 4F7 is placed between the absorbent body 8 and the back sheet 6, adhered to the back sheet 6, and not adhered to the absorbent body 8. This prevents the elastic force (contraction force) of the rubber thread 4F7 from acting on the absorbent body 8, and prevents the absorbent body 8 from deforming. Note that if a strip-shaped stretchable member is used instead of the rubber thread 4F7, the rubber thread cover sheet 13 is not provided, and the stretchable member and the core wrap sheet 7 can be left unadhered. Also, in this embodiment, the rubber thread cover sheet 13 is formed to the same length as the back sheet 6. The elastic thread cover sheet 13 may be formed to a length that matches the extended area of ​​the elastic thread 4F7, or it may be formed to be longer than the extended area of ​​the elastic thread 4F7 and shorter than the back sheet 6.

[0047] Furthermore, the diaper 1 has elongated strip-shaped side sheets 10L and 10R for forming the three-dimensional gathers 3BL and 3BR described above. The side sheets 10L and 10R are provided on the long sides of the top sheet 9. Elastic threads 10L1 and 10R1 are attached to the side sheets 10L and 10R in a stretched state along the longitudinal direction. Thus, the edge 4F4 which becomes the left edge of the front body region 1F of the cover sheet 4 and the edge 4R which becomes the left edge of the back body region 1R When 4 and 4 are joined together, and the edge 4F5 which forms the right edge of the front body region 1F of the cover sheet 4 and the edge 4R5 which forms the right edge of the back body region 1R are joined together, the diaper 1 is completed as shown in Figure 1. At this point, the side sheets 10L and 10R are pulled in the longitudinal direction by the contractile force of the elastic threads 10L1 and 10R1 and rise up from the top sheet 9 along the fold lines 10L2 and 10R2. As a result, three-dimensional gathers 3BL and 3BR are formed to prevent liquid from leaking out from the left lower limb opening 2L and the right lower limb opening 2R.

[0048] Here, when the three-dimensional gathers 3BL and 3BR are formed, the widthwise spacing between the vertical lines of the three-dimensional gathers 3BL and 3BR is set to allow for the insertion of an inner pad. The method of joining the edges 4F4 and 4R4, and edges 4F5 and 4R5 is not particularly limited, but can be done by heat sealing, high-frequency sealing, ultrasonic sealing, etc.

[0049] Furthermore, the diaper 1 has an end sheet 11F that is laminated on the wearer-facing side of the front body region 1F of the cover sheet 4, and an end sheet 11R that is laminated on the wearer-facing side of the back body region 1R of the cover sheet 4, sandwiching the back sheet 6, absorbent material 8, top sheet 9, and side sheets 10L, 10R. The end sheets 11F and 11R are strip-shaped sheets that are layered on the cover sheet 4 and inner cover sheet 5 at one end in the longitudinal direction of the top sheet 9. The end sheets 11F and 11R are made of non-permeable nonwoven fabric and mainly reinforce the cover sheet 4 and inner cover sheet 5 in the waist contact area of ​​the diaper 1. In addition, adhesive is applied to the end sheets 11F and 11R, and they are bonded to the inner cover sheet 5 by this adhesive. The end sheets 11F and 11R are positioned on the skin-facing side of the laminate formed by the back sheet 6, absorbent 8, top sheet 9, and side sheets 10L and 10R, preventing the edges of the laminate from directly touching the skin and causing discomfort to the wearer.

[0050] Figure 3 is an example of a schematic diagram showing the diaper 1 according to Embodiment 1 in an unfolded and extended state. Figure 3(A) schematically shows the internal structure of the unfolded and extended diaper 1 when viewed from the left side. Figure 3(B) schematically shows a plan view of the unfolded and extended diaper 1.

[0051] As shown in Figure 3, the elastic thread 4F3 (an example of the "first stretchable member" in this disclosure) that forms the leg gather 3LF is provided along the edges of the front body region 1F side of the right lower limb opening 2R and the left lower limb opening 2L into which the wearer's legs enter when the diaper 1 is assembled. The elastic thread 4F3 is provided so as to cross in the left-right direction in the crotch region 1B on the front body side. Where the elastic thread 4F3 is provided so as to cross in the left-right direction, the elastic thread 4F3 and the absorbent material 8 overlap in the thickness direction of the diaper 1. Furthermore, the central part in the width direction of such a crossing region corresponds to the urethral opening of a female wearer when the diaper 1 is worn. Note that in the region where the absorbent material 8 overlaps in the thickness direction, the arrangement of the elastic thread 4F3 is not limited to crossing as shown in Figure 3. The extension direction of the elastic thread 4F3 only needs to have a width component, and preferably the width component of the extension direction of the elastic thread 4F3 is greater than the longitudinal component.

[0052] On the other hand, the elastic thread 4R3 (an example of the "second stretchable member" in this disclosure) that forms the leg gather 3LR is provided so as to follow the edges of the right lower limb opening 2R and the left lower limb opening 2L on the back body region 1R side. In the crotch region 1B on the back body side, the tip of the elastic thread 4R3 is facing in the width direction. However, the elastic thread 4R3 is cut in the middle in the width direction, and the left elastic thread 4R3 and the right elastic thread 4R3 are not connected.

[0053] Furthermore, the inner cover sheet 5 and the absorbent material 8 extend from the front body area 1F to the back body area 1R. The inner cover sheet 5 and the absorbent 8 are appropriately bonded together with adhesive via the back sheet 6. However, as shown in Figure 3, in the area where the elastic thread 4F3 crosses the front body region 1F, the inner cover sheet 5 and the absorbent 8 are not bonded together (referred to as the non-bonded region 15). In practice, in the non-bonded region 15, the inner cover sheet 5 and the back sheet 6 are not bonded together. In this embodiment, the non-bonded region 15 is provided over the entire overlapping area of ​​the crotch region 1B where the elastic thread 4F3 and the absorbent 8 overlap. Note that in Figure 3, the non-bonded region 15 is shown as filled in.

[0054] Furthermore, as shown in Figure 3, the elastic thread 4F7 is provided in the widthwise center between the back sheet 6 and the core wrap sheet 7, stretched longitudinally from the front body region 1F to the crotch region 1B. In practice, the elastic thread 4F7 is provided between the back sheet 6 and the elastic thread cover sheet 13 (not shown in Figure 3). The crotch region 1B side of the elastic thread 4F7 corresponds to the wearer's anus when the wearer is wearing the diaper 1. The absorbent material 8 is compressed linearly around the elastic thread 4F7, and is shown as line 14 in Figure 3. Line 14 is provided in the widthwise direction at its end on the crotch region 1B side. Line 14 is also bent outward in the widthwise direction at its end on the front body region 1F side. This compression of the absorbent material 8 is achieved, for example, by embossing with a roller.

[0055] The cover sheet 4 has one end folded back at the fold lines 4FF and 4RF shown in Figure 2. The waist gather 3R described above is formed by attaching a stretched elastic thread (thread-like elastic) 4F1 to the front body region of the cover sheet 4, and attaching a stretched elastic thread (thread-like elastic) 4R1 to the back body region of the cover sheet 4. The elastic threads 4F1 and 4F2 are provided in the order of elastic thread 4F1 and elastic thread 4F2 from the fold line 4FF side, along the fold line 4FF which will form the upper edge of the front body region 1F when folded back. Similarly, the tummy gather 12 is formed by attaching a stretched elastic thread 4F2 to the front body region 1F of the cover sheet 4, and attaching a stretched elastic thread 4R2 to the back body region 1R of the cover sheet 4. Similar to the elastic threads 4F1 and 4F2, the elastic threads 4R1 and 4R2 are also provided along the fold line 4RF, which forms the upper edge of the back bodice region 1R when folded, starting from the fold line 4RF side, with elastic thread 4R1 and then elastic thread 4R2.

[0056] Therefore, the elastic threads 4F1 and 4F2 are provided on the cover sheet 4 with their longitudinal direction, which is the direction of stretching, oriented in the left-right direction of the diaper 1. Similarly, the elastic threads 4R1 and 4R2 are provided on the cover sheet 4 with their longitudinal direction, which is the direction of stretching, oriented in the left-right direction of the diaper 1. Thus, when the edges 4F4 and 4R4 are joined to each other, and the edges 4F5 and 4R5 are joined to each other, the elastic threads 4F1 and 4F2 and the elastic threads 4R1 and 4R2 form a substantially annular stretchable member that wraps around the waist opening 2T, and exert the function of contracting the waist opening 2T in the waist direction. In other words, the elastic threads 4F1 and 4F2 and the elastic threads 4R1 and 4R2 exert a contracting force to make the diaper 1 adhere closely to the wearer, preventing the formation of a gap between the diaper 1 and the wearer's waist circumference. The elastic threads 4F2 and 4R2 overlap with the absorbent material 8 in a portion of their crotch area 1B side.

[0057] The elastic threads 4F1 and 4R1 are provided to extend horizontally along the upper edges of the front and back body regions 1F and 1R, respectively, as shown in Figure 1. The elastic threads 4F2 and 4R2 are provided parallel to each other at predetermined intervals. When the diaper 1 is worn, the elastic threads 4F1 and 4R1 tighten relatively strongly around the wearer's waist above the elastic threads 4F2 and 4R2. The elastic threads 4F1 and 4R1 are responsible for keeping the diaper 1 in close contact with the wearer, preventing it from shifting position, and preventing leakage of discharge from the abdomen and back. The elastic threads 4F2 and 4R2 alleviate the feeling of pressure on the wearer caused by the contractile force of the elastic threads 4F1 and 4R1.

[0058] Cover sheet 4 is folded over at the fold lines 4FF and 4RF, and elastic threads 4F1 and 4 The R1 extension extends to the placement area, and the folded portion reinforces the placement areas of the elastic threads 4F1 and 4R1. The end sheets 11F and 11R (see Figure 2) are provided in the placement areas of the elastic threads 4F2 and 4R2 where the cover sheet 4 folded along the folding lines 4FF and 4RF does not extend, and reinforce the placement areas of the elastic threads 4F2 and 4R2.

[0059] In this application, the term "overlapping sheets" is not limited to a state in which the overlapping sheets are in full contact with each other, but also includes a concept that includes a state in which only parts of the sheets overlap. For example, the end sheet 11F is overlapped such that a part of one end of the back sheet 6 in the longitudinal direction touches a part of the cover sheet 4. The diaper 1 is formed by stacking the back sheet 6 and top sheet 9 with the absorbent material 8 in between, as well as the cover sheet 4, end sheets 11F, 11R, inner cover sheet 5, and side sheets 10L, 10R. Therefore, it can be said that the diaper has a laminate made up of these multiple sheets stacked on top of each other.

[0060] In this embodiment, as shown in Figure 3, the non-adhesive region 15 extends towards the front body region 1F and the back body region 1R from the portion where the elastic thread 4F3 crosses the crotch region 1B (hereinafter, this portion may be referred to as the "transverse portion of the elastic thread 4F3"). The non-adhesive region 15 is provided throughout the entire width of the diaper 1. Also, as shown in Figure 3, the elastic thread 4F3 has a longitudinal component of the diaper 1 outside the width of the diaper 1 relative to the absorbent material 8. Here, the longitudinal component refers to the component that extends and stretches along the longitudinal direction of the diaper 1, and even if the elastic thread 4F3 extends diagonally with respect to the longitudinal direction, the elastic thread 4F3 still has a longitudinal component.

[0061] The non-adhesive region 15 is formed to include the front body region 1F side of the extended region of the elastic thread 4F3, and furthermore, the outer widthwise portion of the elastic thread 4F3 that crosses the absorbent material 8 has a component that stretches in the longitudinal direction of the diaper 1. Therefore, the outer body (cover sheet 4 and inner cover sheet 5) in the non-adhesive region 15 is pulled towards the front body region 1F by the elastic thread 4F3, and the inner body including the absorbent material 8 is also pulled towards the front body region 1F by this outer body. With this configuration, the diaper 1 can prevent the absorbent material 8 from separating from the wearer's skin by pulling the absorbent material 8 on the skin-facing side of the non-adhesive region 15 towards the front body region 1F. Note that if the non-adhesive region 15 is formed to include the front body region 1F side beyond the extended region of the elastic thread 4F3, it can be pulled towards the front body region 1F by the elastic thread 4F3, and the inner body including the absorbent material 8 can also be pulled towards the front body region 1F.

[0062] Here, we will explain the case where the wearer of diaper 1 is female. When a woman wears diaper 1, the design ensures that the urethral opening is generally located at the crossing of the elastic thread 4F3. Therefore, the crossing of the elastic thread 4F3 includes an area corresponding to the urethral opening of a female wearer. As mentioned above, the elastic thread 4F3 pulls the outer body and the inner body including the absorbent material 8 on the non-adhesive area 15 towards the front body area 1F, bringing the absorbent material 8 closer to the woman's urethral opening, making it easier for urine excreted from the urethral opening to penetrate the absorbent material 8. In this way, diaper 1 can suppress urine leakage.

[0063] Next, we will describe the case when the wearer of diaper 1 is male. When a male wears diaper 1, the transverse portion of the elastic thread 4F3 is designed to be on the crotch area 1B side of the position of the male penis (male genitalia). In other words, the male penis is located on the front body area 1F side of the transverse portion of the elastic thread 4F3. Thus, the transverse portion of the elastic thread 4F3 is on the crotch area 1B side of the area corresponding to the penis. Diaper 1 can create a space to hold the penis in the area corresponding to the penis by using the elastic thread 4F3 to pull the outer body and inner body including the absorbent material 8 on the non-adhesive area 15 towards the front body area 1F, pressing the absorbent material 8 against the back of the testicles. Since male wearers urinate from the urethral opening of the penis, diaper 1 holds the penis. This allows for control of the direction of urination and suppression of urine leakage.

[0064] Furthermore, when a man wears the diaper 1, the design ensures that the testicles are positioned approximately where the elastic thread 4F3 crosses the crotch area 1B. Therefore, the area where the elastic thread 4F3 crosses the crotch area 1B includes the area corresponding to the testicles of the male wearer. The absorbent material 8 expands along with the bulge of the testicles, but the elastic thread 4F3 lifts the absorbent material 8, allowing the testicles to be held in place. In addition, even if the position of the testicles shifts or the position of the testicles relative to the diaper 1 differs depending on the wearer, the non-adhesive area 15 allows the relative position of the crossing portion of the elastic thread 4F3 to be moved, and the elastic thread 4F3 lifts the absorbent material 8 in the area where the testicles are located, allowing the testicles to be held in place.

[0065] Furthermore, by providing a non-adhesive area 15, the diaper 1 can suppress the contraction of the absorbent material 8 at the crossing portion of the elastic thread 4F3. If the absorbent material contracts and comes into contact with the wearer's skin, it will cause discomfort to the wearer and reduce the wearing comfort. The diaper 1 according to this embodiment can suppress the reduction in wearing comfort by suppressing the contraction of the absorbent material 8. In addition, if the absorbent material contracts after absorbing urine, the pulp may break down. The diaper 1 according to this embodiment can suppress deformation of the absorbent material 8 by suppressing the contraction of the absorbent material 8.

[0066] Here, the lines 14 formed on the absorbent material 8 will be explained using Figures 4 to 6. Figure 4 is a plan view showing the absorbent material 8 and elastic threads 4F3, 4R3, and 4F7 removed from the diaper 1. Figure 5 is a cross-sectional view of the diaper 1 when cut in the width direction along line AA in Figure 3. Figure 6 is a cross-sectional view of the diaper 1 when cut in the width direction along line BB in Figure 3. Note that in Figures 5 and 6, a gap is shown between the backsheet 6 and the inner cover sheet 5, but in reality, the backsheet 6 and the inner cover sheet 5 are bonded together except in the non-adhesive area 15.

[0067] As shown in Figure 4, line 14 has five grooves. The five grooves consist of grooves 14AL, 14AR (an example of the "first groove" in this disclosure), grooves 14BL, 14BR (an example of the "second groove" in this disclosure), and groove 14C (an example of the "high-rigidity section" in this disclosure). Grooves 14AL and 14AR are formed in the absorbent body 8 and are a pair of left and right grooves that extend outward from the center in the width direction of the diaper 1 towards the front body region 1F side end in the region corresponding to the wearer's groin. Grooves 14AL and 14AR are compression grooves formed by compressing the absorbent body 8. Note that grooves 14AL and 14AR may be formed by compressing only the absorbent core 8c, or they may be formed by compressing the absorbent body 8 including the core wrap sheet 7. In this embodiment, grooves 14AL and 14AR are formed by compressing the core wrap sheet 7 and the absorbent core 8c from the skin side. The absorbent material 8 bends along the wearer's groin area due to the grooves 14AL and 14AR that are formed therein.

[0068] Furthermore, when viewing the region where grooves 14AL and 14AR are provided in plan view... The placeA non-adhesive region 15 is formed in which the absorbent body 8 and the inner cover sheet 5 are not adhered, including the area where grooves 14AL and 14AR overlap. In Figure 4, the non-adhesive region 15 is shown as filled in. If the non-adhesive region 15 were not formed including the area where grooves 14AL and 14AR overlap, and the absorbent body 8 and the inner cover sheet 5 were adhered in that area, the outer casing would spread out and press against the skin, and as a result, the state of the outer casing would be transmitted to the absorbent body 8, causing a force to act on the absorbent body that moves it from a folded state along the groin to a flat state. In contrast, the diaper 1 according to this embodiment, by being configured as described above, makes it possible to press the absorbent body 8, which is folded along the groin, against the skin side while maintaining its folded state. As a result, the diaper 1 can improve the adhesion of the absorbent body 8 to the wearer's skin.

[0069] Furthermore, as shown in Figure 4, the non-adhesive region 15 extends in the width direction of the diaper 1 and has a substantially rectangular shape. Although not shown in Figure 4, the non-adhesive region 15 extends to the widthwise end of the outer casing of the diaper 1. When the outer casing of the diaper 1 is pulled in the left-right direction while worn, the outer casing pushes the absorbent material 8 towards the skin side, allowing the absorbent material 8 to be pressed against the wearer's skin. This improves the adhesion of the absorbent material 8 to the wearer's skin.

[0070] Furthermore, as shown in Figure 4, when the diaper 1 is viewed from above, the diaper 1 is equipped with elastic thread 4F3 that is attached to the inner cover sheet 5 and the cover sheet 4 in an extended state in the area overlapping the non-adhesive area 15. As shown in Figure 3, the ends of the elastic thread 4F3 are positioned at the widthwise ends of the left lower limb opening 2L and the right lower limb opening 2R. When the legs are inserted through the left and right lower limb openings 2L and 2R provided in the outer body, the outer body is pulled outward in the widthwise direction, and the elastic thread 4F3 is also pulled outward in the widthwise direction. As a result, in the area where the elastic thread 4F3 extends in the widthwise direction and crosses the crotch area 1B, the outer body is pushed towards the skin side, but this area is provided with a non-adhesive area 15 where the absorbent material 8 and the outer body are not adhered. Therefore, the absorbent material 8 is pushed up by the outer body to move closer to the skin side while maintaining its bent state along the groin. In this embodiment, the elastic thread 4F3 for forming leg gathers extends through the non-adhesive region 15 and is connected on both sides. However, the elastic thread provided in the non-adhesive region 15 that crosses the crotch region 1B and the elastic thread for forming leg gathers may be provided separately. Furthermore, the ends of the elastic thread 4F3 may be adhered to the outer casing, and in the non-adhesive region 15, which is the center in the width direction, the elastic thread may be adhered to another sheet material placed between the outer casing and the backsheet. Even with this configuration, the diaper 1 can obtain the above-described effects as long as the backsheet and the other sheet material are not adhered in the non-adhesive region 15.

[0071] Furthermore, one of the multiple elastic threads 4F3 on the back body region 1R side is positioned to cross the crotch region 1B on the back body region 1R side, beyond the end of the grooves 14AL and 14AR on the back body region 1R side. Because the non-adhesive region 15 is provided, the crossing portion of the elastic thread 4F3 is pulled up towards the front body region 1F side. In this pulled-up state, by positioning the rear elastic thread 4F3 at the rear end of the grooves 14AL and 14AR, the rear end of the grooves 14AL and 14AR can be pressed against the skin side by the elastic thread 4F3, or the front and rear of the rear end of the grooves 14AL and 14AR can be pressed against by the elastic thread 4F3.

[0072] Next, grooves 14BL and 14BR will be described. Grooves 14BL and 14BR are formed in the absorbent material 8 and are a pair of left and right grooves that extend longitudinally in the region corresponding to the wearer's urethral opening. Grooves 14BL and 14BR are compression grooves formed by compressing the absorbent material 8. Note that grooves 14BL and 14BR may be formed by compressing only the absorbent core 8c, or by compressing the absorbent material 8 including the core wrap sheet 7. In this embodiment, grooves 14BL and 14BR are formed by compressing the core wrap sheet 7 and the absorbent core 8c from the skin side. Due to the formation of grooves 14BL and 14BR, the absorbent material 8 between the grooves is raised toward the urethral opening. As a result, the diaper 1 can press the absorbent material 8 against the urethral opening, thereby improving the adhesion of the absorbent material 8 to the wearer's skin.

[0073] Furthermore, when viewed from above, the elastic thread 4F3 is positioned to include an area that overlaps with the front body area 1F side of the grooves 14BL and 14BR. This configuration enhances the effect of pressing the absorbent material 8 against the wearer's skin in a folded state due to the elastic thread 4F3. This is because by providing a non-adhesive area 15 in the area where the elastic thread 4F3 and the absorbent material 8 overlap, the absorbent material 8 is not deformed by the contraction of the elastic thread 4F3, but rather the absorbent material 8, which is folded by the grooves 14BL and 14BR, can be pressed against the skin. In addition, in order to achieve this effect, the elastic thread 4F3 is positioned in the left-right direction when the legs are inserted through the left and right lower limb openings 2L and 2R. It is preferable that the absorbent material 8 is pulled taut and pressed against the skin. For this reason, it is preferable that the elastic thread 4F3 is an elastic thread for forming leg gathers, with its end positioned at the widthwise end of the diaper 1. Also, when viewed in the thickness direction, if the elastic thread 4F3 for forming leg gathers overlaps with grooves 14AL and 14AR, it is preferable that the absorbent material 8, which is bent along the groin area, is pressed against the wearer's skin by the contractile force of the elastic thread 4F3. Also, when viewed in the thickness direction, if the elastic thread 4F3 for forming leg gathers overlaps with grooves 14BL and 14BR, it is preferable that the absorbent material 8 is pressed against the urethral opening of a female wearer, or that the inner pad (urine pad) placed on the top sheet 9 is pressed against the urethral opening of a female wearer. Furthermore, the diaper 1 may be configured such that the elastic thread 4F3 overlaps the grooves 14AL and 14AR, but does not overlap the grooves 14BL and 14BR, thereby being suitable for pressing the absorbent body 8, which is folded along the groin area, against the wearer's skin side by the contractile force of the elastic thread 4F3. Alternatively, the diaper 1 may be configured such that the elastic thread 4F3 does not overlap the grooves 14AL and 14AR, but overlaps the grooves 14BL and BR, thereby being suitable for pressing the absorbent body 8 against the female wearer's urethral opening when the elastic thread 4F3 for forming the leg gathers overlaps the grooves 14BL and 14BR, or for pressing the inner pad (urine pad) placed on the top sheet 9 against the female wearer's urethral opening. Furthermore, as in this embodiment, the diaper 1 has elastic threads 4F3 overlapping grooves 14AL, 14AR and grooves 14BL, 14BR, and of course it can be either of the two preferred configurations described above.

[0074] Note that grooves 14AL, 14AR and grooves 14BL, 14BR are not limited to compression grooves. Grooves 14AL, 14AR and grooves 14BL, 14BR only need to allow the absorbent body 8 to be bent starting from the groove, and may be weight-reducing grooves or through grooves formed by reducing the pulp weight of the absorbent core 8c only in the groove-forming area. Note that by making grooves 14AL, 14AR and grooves 14BL, 14BR compression grooves, the groove-forming area can be made more rigid and prevent deformation of the groove-forming area.

[0075] Furthermore, in this embodiment, groove 14AL and groove 14BL are connected, and groove 14AR and groove 14BR are connected. This allows groove 14AL and groove 14BL, and groove 14AR and groove 14BR to be formed integrally. Note that groove 14AL and groove 14BL may be adjacent with a gap between them, and groove 14AR and groove 14BR may be adjacent with a gap between them. Also, if a gap is provided between these grooves, the end of groove 14BL does not have to be located on the extension of groove 14AL, and the end of groove 14BR does not have to be located on the extension of groove 14AR.

[0076] Furthermore, the non-adhesive area 15 includes the area that overlaps with the front body area 1F side edge of grooves 14BL and 14BR when viewed from above. When the legs are inserted through the left and right lower limb openings 2L and 2R provided in the outer body, the outer body is pulled outward in the width direction, and the elastic thread 4F3 is also pulled outward in the width direction. As a result, in the area where the elastic thread 4F3 crosses the crotch area 1B which extends in the width direction, the outer body is pushed up toward the skin side, but there is a non-adhesive area 15 where the absorbent material 8 and the outer body are not adhered. Therefore, the absorbent material 8 maintains a raised state toward the urethral opening between grooves 14BL and 14BR, and is pushed up toward the urethral opening by the outer body. As a result, the diaper 1 can press the absorbent material 8 against the urethral opening, thereby improving the adhesion of the absorbent material 8 to the wearer's skin.

[0077] Next, groove 14C will be described. Groove 14C is formed in the absorbent body 8, is located on the back body region 1R side of grooves 14BL and 14BR, and extends in the width direction. Groove 14C is a compression groove formed by compressing the absorbent body 8. Note that groove 14C may be formed by compressing only the absorbent core 8c, or it may be formed by compressing the absorbent body 8 including the core wrap sheet 7. In this embodiment, groove 14C is formed by compressing the core wrap sheet 7 and the absorbent core 8c from the skin side.

[0078] Groove 14C is a compression groove and therefore has higher rigidity compared to the area outside the groove formation region. Furthermore, because grooves 14BL and 14BR are formed in diaper 1, when worn, the absorbent material 8 is narrowed laterally by the wearer's legs, and the absorbent material 8 bends so that it protrudes towards the skin starting from grooves 14BL and 14BR, improving its adhesion to the urethral opening. However, if the portion of the absorbent material 8 that protrudes towards the skin starting from grooves 14BL and 14BR extends to the wearer's anus, the absorbent material 8 will protrude towards the anus and may enter the gluteal cleft (cleft) of the buttocks, potentially causing discomfort to the wearer. Also, if the absorbent material 8 enters the gluteal cleft, the stool expelled from the anus may be pushed towards the skin surface by the absorbent material 8, potentially causing the stool to press against the skin. Therefore, it is undesirable for the absorbent material 8 to protrude towards the anus and enter the gluteal cleft of the buttocks.

[0079] To suppress the occurrence of this problem, the diaper 1 according to this embodiment has a groove 14C. By having a groove 14C, the diaper 1 can prevent the absorbent material 8 from protruding towards the skin in the area of ​​the diaper 1 corresponding to the anus. By providing a groove 14C, which is a highly rigid part extending in the left-right direction in the area of ​​the diaper 1 corresponding to the anus, the diaper 1 creates a space between the anus or gluteal cleft and the absorbent material 8, thereby suppressing the occurrence of the above-mentioned problem.

[0080] Furthermore, in this embodiment, since grooves 14BL and 14BR are also compression grooves, grooves 14BL and 14BR and groove 14C can be formed in the same process. Also, groove 14C may be connected to grooves 14BL and 14BR. This allows grooves 14BL and 14BR and groove 14C to be formed integrally. Even if groove 14C is connected to grooves 14BL and 14BR, the absorbent material 8 will be convex towards the skin between grooves 14BL and 14BR, but the convex shape of the absorbent material 8 will be suppressed in the groove 14C formation region, which is on the back side. In addition, grooves 14BL and 14BR are positioned on the front body region 1F side of the region corresponding to the wearer's anus. This prevents the absorbent material 8 from being convex in the region corresponding to the anus.

[0081] Furthermore, the diaper 1 is equipped with a rubber thread 4F7 that is attached to the non-skin side of the absorbent material 8 in a longitudinally stretched state. The rubber thread 4F7 is positioned in an overlapping area between a pair of grooves 14BL and 14BR and stretches longitudinally. The rubber thread 4F7 contracts the outer covering, consisting of the inner cover sheet 5 and the cover sheet 4, and pushes the absorbent material 8 towards the skin side. As a result, the diaper 1 can lift the portion of the absorbent material 8 that protrudes towards the urethral opening between the pair of grooves 14BL and 14BR towards the skin side by the outer covering. Because the diaper 1 can press the absorbent material 8 against the urethral opening, the adhesion of the absorbent material 8 to the wearer's skin can be improved.

[0082] Furthermore, when the diaper 1 is viewed from above, the elastic thread 4F7 extends between the pair of grooves 14AL and 14AR on the left and right sides. In the region where the absorbent material 8 is bent starting from the grooves 14AL and 14AR and is aligned with the groin area, the outer covering contracts in the longitudinal direction, floats away from the skin, and becomes more easily deformed along the base of the legs. As a result, the diaper 1 can be made more comfortable to wear.

[0083] As described above, the elastic thread 4F7 extends between grooves 14AL, 14AR and grooves 14BL, 14BR. As shown in Figure 3, when the diaper 1 is viewed from above, the elastic thread 4F7 does not overlap with the elastic thread 4F2 for the tummy gathers. By being configured in this way, the diaper 1 forms a space between the wearer's skin and the crotch area 1B of the tummy gathers, making it easier for urine that reaches the front body area 1F (abdominal side) in the left-right direction to flow to the other side. For example, if the wearer is male and the tip of the male genitalia (penis) is pointing in either the left or right direction when the wearer urinates, the urine will flow more easily to the other side, thus preventing urine leakage.

[0084] Furthermore, the elastic thread 4F7 is positioned on the front body area 1F side of the area corresponding to the wearer's anus. In other words, the elastic thread 4F7 is positioned on the front body area 1F side of the groove 14C. With this configuration, the diaper 1 lifts the outer body towards the skin side with the contractile force of the elastic thread 4F7, thereby lifting the part of the absorbent material 8 that is convex between grooves 14BL and 14BR towards the skin side, but suppressing the absorbent material 8 from being lifted towards the skin side in the area corresponding to the anus. The diaper 1 can be made to separate the anus from the skin side of the diaper 1.

[0085] Furthermore, the elastic thread 4F7 and the absorbent material 8 are not adhered to each other in the area corresponding to the wearer's anus. This configuration will be explained using Figures 5 and 6. As shown in Figure 6, the elastic thread cover sheet 13 extends even in the area corresponding to the anus (the area where the groove 14C is formed). Therefore, since the elastic thread cover sheet 13 is not adhered to the non-skin side of the core wrap sheet 7, a minute gap is formed between the elastic thread cover sheet 13 and the absorbent material 8 in the area where the elastic thread 4F7 extends, as shown in Figure 5. This gap expands as the outer casing is pulled by the contraction of the elastic threads 4F7 and 4R3. As a result, the diaper 1 can more easily form space between the absorbent material 8 and the wearer's anus.

[0086] <Embodiment 2> Next, we will describe the diaper 1 according to Embodiment 2. Figure 7 is an example of an exploded perspective view of the diaper 1 according to Embodiment 2. Note that components identical to those of Embodiment 1 described above are denoted by the same reference numerals, and their descriptions are omitted.

[0087] In this embodiment, the absorbent body 8 has a plurality of mats. The absorbent body 8 has an absorbent core 8c consisting of a plurality of mats and a core wrap sheet 7 that encloses the absorbent core 8c. In this embodiment, as shown in Figure 7, the absorbent core 8c has an upper absorbent mat 8a and a lower absorbent mat 8b. The upper absorbent mat 8a is roughly hourglass-shaped with a constricted portion, and the lower absorbent mat 8b is rectangular. The width of the lower absorbent mat 8b is approximately the same as the width of the constricted portion of the upper absorbent mat 8a. Thus, the absorbent core 8c may be formed by laminating two layers of absorbent mats.

[0088] <Variation> In the above embodiment, the absorbent 8 and the inner cover sheet 5 are not adhered to each other in the non-adherent region 15 where the elastic thread 4F3 traverses in the width direction. However, the absorbent 8 and the inner cover sheet 5 may be partially adhered to each other in the non-adherent region 15. In this case, displacement of the absorbent 8 relative to the inner cover sheet 5 can be prevented. The area where it is partially adhered may be, for example, the center in the width direction.

[0089] The embodiments and variations disclosed above can be combined in any way. [Explanation of symbols]

[0090] 1B: Inseam area 1F: Front bodice area 1R: Back panel area 2L:Left lower limb opening 2R: Right lower limb opening 2T: Body opening 3BL, 3BR: Three-dimensional gathers 3LF, 3LR: Leg Gather 3R: Waist Gather 4: Cover sheet 4F1, 4F2, 4F3, 4F7: Elastic thread 4F4, 4F5: Edge 4FF: Folding line 4R1, 4R2, 4R3, 4R3: Elastic thread 4R4, 4R5: Edge 4RF: Loopback Line 5: Inner cover sheet 6: Back seat 7: Core wrap sheet 8: Absorbent material 8c: Absorption core 9: Top sheet 10L, 10R: Side seats 10L1, 10R1: Elastic thread 10L2, 10R2: Turnaround line 11F, 11R: End sheet 12: Tummy Gather 13: Thread elastic cover sheet 14: Line 14AL, 14AR, 14BL, 14BR, 14C: Groove 15: Non-adhesive area

Claims

1. An absorbent article having a front panel region located on the wearer's abdominal side, a crotch region located in the crotch area, and a back panel region located on the back side, arranged in this order along the longitudinal direction, and having a length along the longitudinal direction and a length along the width direction perpendicular to the longitudinal direction, An absorbent body is provided in a position including the crotch area and capable of absorbing the wearer's excretory fluids, An outer casing having a waist opening through which the wearer's waist can be inserted, and two leg openings through which the wearer's legs can be inserted, and positioned on the non-skin side of the wearer than the absorbent material, The absorbent material has a first groove, comprising a pair of left and right first grooves that extend outward from the center in the width direction in the direction of the front body region towards the side edge of the front body region in the region corresponding to the wearer's groin, When the region where the first groove is provided is viewed from above, the region where the first groove overlaps is provided, and the absorbent and the outer casing are not adhered to each other in the non-adhesive region, Equipped with, In the front longitudinal side of the non-adhered region, the absorbent and the outer covering are bonded together in the front body region. In the rear longitudinal side of the non-adhered region, the absorbent material and the outer covering are bonded together in the crotch region and the back body region. Absorbent material.

2. The non-adhesive region extends in the width direction and has a substantially rectangular shape. The absorbent article according to claim 1.

3. When viewed from above, the exterior body is equipped with a first expandable member that is adhered in an extended state to the area overlapping the non-adhesive area. The end of the first expandable member is positioned at the end of the leg opening in the width direction, The absorbent article according to claim 1 or 2.

4. The first stretchable member is provided on the front body region side along one of the leg openings, crosses the crotch region in the non-adhesive region, and extends along the other leg opening. The absorbent article according to claim 3.

5. The absorbent material has a second groove, comprising a pair of left and right second grooves extending along the longitudinal direction in a region corresponding to the wearer's urethral opening. The absorbent article according to claim 1 or 2.

6. The first groove and the second groove are compression grooves. The absorbent article according to claim 5.

7. The first groove and the second groove are adjacent to each other with a gap between them, or are connected. The absorbent article according to claim 5.

8. The non-adhesive region, when viewed from above, includes the region that overlaps with the front body region side end of the second groove. The absorbent article according to claim 5.

9. The absorbent material has a second groove, comprising a pair of left and right second grooves extending along the longitudinal direction in a region corresponding to the wearer's urethral opening, The first expandable member is positioned to include an area that overlaps with the front body area of ​​the second groove when viewed from above. The absorbent article according to claim 3.

10. The absorbent has a high-rigidity portion that is positioned on the rear body region side of the second groove and extends in the width direction, The absorbent article according to claim 5.

11. The aforementioned high-rigidity part is a compression groove. The absorbent article according to claim 10.

12. The aforementioned high-rigidity portion is connected to the second groove. The absorbent article according to claim 10.

13. The aforementioned high-rigidity portion is positioned in the region corresponding to the wearer's anus. The absorbent article according to claim 10.

14. The second groove is positioned on the front body area side of the area corresponding to the wearer's anus. The absorbent article according to claim 10.

15. It comprises a second expandable member that is attached to the outer casing in an extended state and pulls the area corresponding to the wearer's anus in the width direction, The absorbent article according to claim 10.

16. A third expandable member is bonded to the non-skin side of the absorbent material in an extended state in the longitudinal direction, and is positioned in a region overlapping between a pair of second grooves, and comprises a third expandable member that expands and contracts in the longitudinal direction. The absorbent article according to claim 10.

17. The third expandable member extends, when viewed from above, including the space between the left and right pair of first grooves. The absorbent article according to claim 16.

18. The third stretchable member is positioned on the front body area side of the area corresponding to the wearer's anus. The absorbent article according to claim 16.

19. In the region corresponding to the wearer's anus, the third stretchable member and the absorbent material are not adhered to each other. The absorbent article according to claim 16.

20. The absorbent material is provided with a non-permeable sheet placed between it and the outer casing, The absorbent body comprises an absorbent core and a water-permeable sheet surrounding the absorbent core. The third expandable member is positioned between the absorbent and the impermeable sheet, is bonded to the impermeable sheet, and is not bonded to the absorbent. The absorbent article according to claim 16.

21. The third expandable member and the absorbent are positioned between them and the expandable member cover sheet which covers the third expandable member, The aforementioned expandable member cover sheet is not adhered to the absorbent. The absorbent article according to claim 16.

22. The first stretchable member is provided so as to cross the crotch area on the side of the back body area that is closer to the back body area than the end of the first groove on the back body area side. The absorbent article according to claim 4.

23. The non-adhesive region extends further toward the front body region than the portion where the first stretchable member crosses the crotch region. The first expandable member has a component in the longitudinal direction that is located outside the width direction of the absorber. The absorbent article according to claim 4.

24. If the wearer is female, the portion of the first stretchable member that crosses the crotch area includes the area corresponding to the urethral opening. The absorbent article according to claim 23.

25. If the wearer is male, the portion of the first stretchable member that crosses the crotch area is closer to the crotch area than the area corresponding to the penis. The absorbent article according to claim 23.

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