Absorbent article

Abstract

To suppress leakage of discharged liquid.SOLUTION: An absorbent article includes: an interior body including an absorber arranged so as to cover a crotch area positioned in the crotch of a wearer in a worn state; an exterior body arranged so as to cover at least a front body area positioned around the waist on the abdominal side of the wearer, and a rear body area positioned around the waist on the back part side of the wearer in a worn state, to which at least the two ends in the longitudinal direction of the interior body are joined; and end part sheets extending from the interior body to the exterior body, joined at least to the exterior body, having a non-bonded part that is not bonded to a skin surface side sheet for covering the skin surface side of the interior body, and having a plurality of slits extending in the width direction in the non-bonded part, not reaching the end part in the width direction, and arranged in parallel in the longitudinal direction, through which an absorbent pad used together can be inserted.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to absorbent articles.

Background Art

[0002] Disposable diapers, which are absorbent articles, are known (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the caregiving field, disposable diapers and absorbent pads are used in combination, and the absorbent pads are made to absorb the discharged liquid, thereby reducing the frequency of changing the disposable diapers. However, the discharged liquid such as urine discharged by the wearer may flow on the absorbent pad and reach the longitudinal end of the absorbent pad, which may cause abdominal leakage and back leakage.

[0005] An object of the present invention is to suppress leakage of discharged liquid.

Means for Solving the Problems

[0006] The absorbent article according to one aspect of the present invention includes an inner body containing an absorber, which is arranged to cover the crotch region located at the wearer's crotch in the worn state, and, in the worn state, at least a front body region located around the wearer's abdominal torso and a back body region located around the wearer's back torso, an outer body arranged to cover the regions, with at least both longitudinal ends of the inner body joined thereto, and an end sheet extending from the inner body to the outer body, having a non-adhesive portion that is non-adhesive to at least the outer body and covers the skin side of the inner body, the non-adhesive portion extending in the width direction and not reaching the ends in the width direction, and having a plurality of cuts arranged in parallel to the longitudinal direction into which an absorbent pad to be used in combination can be inserted.

Advantages of the Invention

[0007] According to the present invention, leakage of the discharged liquid can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0009] Hereinafter, a diaper according to an embodiment of the present invention will be described with reference to the drawings. Note that the configurations of the following embodiments are examples, and the present invention is not limited to the configurations of these embodiments. No.

[0010] FIG. 1 is a perspective view of a pant-type disposable diaper for adults according to an embodiment (hereinafter simply referred to as "diaper"). In the diaper, the direction connecting the front body portion disposed opposite to the abdomen of the wearer and the back body portion disposed opposite to the back is defined as the longitudinal direction. Between these front body portions (one side in the longitudinal direction) and the back body portions (the other side in the longitudinal direction) (the center in the longitudinal direction), there is a crotch portion disposed under the crotch of the wearer (opposite to the crotch). Further, in a state where the diaper is worn by the wearer, the side facing the wearer's skin is defined as the skin side, and the side opposite to the skin side is defined as the non-skin side. Furthermore, the direction connecting the skin side and the non-skin side is defined as the thickness direction, and the direction orthogonal to both the longitudinal direction and the thickness direction is defined as the width direction. In addition, viewing from the thickness direction is defined as a plan view. The diaper 1 has a length along the longitudinal direction and a width along the width direction orthogonal to the longitudinal direction, and is worn under the crotch of the wearer. Also, the terms related to the directions used in the present application are meant to be the directions that coincide with the front, rear, left, and right of the wearer in a state where the diaper 1 is worn by the wearer. For example, when referring to the left-right direction in the present application, it means the direction that coincides with the left and right of the wearer in a state where the diaper 1 is worn by the wearer.

[0011] In the present embodiment, as an example of the absorbent article, a pant-type disposable diaper having a tubular structure with a body opening into which the abdominal circumference of the wearer fits and a pair of left and right leg openings through which the left and right lower limbs of the wearer are inserted is exemplified. However, the "absorbent article" referred to in the present application is not limited to adult pant-type disposable diapers. The "absorbent article" referred to in the present application includes pant-type disposable diapers for children.

[0012] The diaper 1 has a crotch region 1B which is a part corresponding to the crotch region (the area from the crotch to the knees) of the wearer covering the crotch of the wearer in the worn state, a front body region 1F which is a part corresponding to the front body of the wearer around the body circumference and covers the abdominal side of the wearer, and a back body region 1R which is a part corresponding to the back body of the wearer around the body circumference and covers the back side of the wearer. Here, the front body region 1F is located on the front side of the crotch region 1B, and the back body region 1R is located on the back 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 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. Therefore, a body opening 2T is formed by the upper edges of the front body region 1F and the back body region 1R in the diaper 1. Further, a left leg opening 2L is formed in the left part of the crotch region 1B where the above joining is not performed, and a right leg opening 2R is formed in the right part of the crotch region 1B. And when the diaper 1 is worn such that the left leg of the wearer is inserted through the left leg opening 2L, the right leg of the wearer is inserted through the right leg opening 2R, and the body of the wearer enters the body opening 2T, the front body region 1F is disposed on the abdominal side of the wearer, the back body region 1R is disposed on the back side of the wearer, and the left leg opening 2L and the right leg opening 2R are fixed to the body of the wearer in a state of surrounding the thighs of the wearer. Since the diaper 1 is fixed to the body of the wearer in such a form, the wearer can move freely while wearing the diaper 1. Incidentally, the left leg opening 2L and the right leg opening 2R may be referred to as a pair of leg openings.

[0013] In the diaper 1, an absorber capable of absorbing and holding liquid is mainly disposed around the crotch region 1B. Further, in the diaper 1, in order to suppress the formation of a gap serving as a liquid outflow path between the diaper 1 and the wearer's skin, a three-dimensional gather 3BL is provided at the left lower limb opening 2L that surrounds the thigh of the wearer's left lower limb, a three-dimensional gather 3BR is provided at the right lower limb opening 2R that surrounds the thigh of the wearer's right lower limb, and a waist gather 3R is provided at a portion that surrounds the wearer's abdominal circumference. Further, leg gathers 3LL and 3LR are provided at positions surrounding the base of the wearer's legs. The three-dimensional gathers 3BL and 3BR and the waist gather 3R adhere to the wearer's skin by the elastic force of the thread rubber. Further, the leg gathers 3LL and 3LR prevent a gap from being generated between the base of the wearer's legs and the diaper 1. Therefore, the The discharged liquid discharged from the genital area is absorbed by the absorber of the diaper 1 with almost no leakage from the diaper 1.

[0014] The diaper 1 can be used in combination with an absorbent pad (not shown). The absorbent pad is a substantially rectangular absorbent article provided with an absorber and absorbs discharged liquid. When the diaper 1 and the absorbent pad are used in combination, the absorbent pad is placed on the skin side of the diaper 1 so as to abut against the discharge hole of the wearer. The discharged liquid is first absorbed by the absorbent pad, and only the discharged liquid that cannot be absorbed by the absorbent pad reaches the absorber of the diaper 1 and is further absorbed. Therefore, even when the amount of discharged liquid is large, it is possible to prevent the discharged liquid from leaking from the diaper 1. Further, when the amount of discharged liquid is small and can be completely absorbed by the absorbent pad, only the absorbent pad needs to be replaced even when discharged liquid is generated, so that the assistance cost can be reduced. Further, the diaper 1 can be used for a long time.

[0015] Figure 2 is an exploded perspective view of the diaper 1 according to the embodiment. The diaper 1 has a cover sheet 4 and inner cover sheets 5F and 5R. The cover sheet 4 is a sheet having a substantially hourglass shape (a gourd shape) that forms the non-skin side surface of the diaper 1. The inner cover sheets 5F and 5R are sheets that are bonded to the cover sheet 4 in the front body region 1F and the rear body region 1R, respectively, and reinforce the cover sheet 4 in the front body region 1F and the rear body region 1R. In the state where the wearer is wearing the diaper, the cover sheet 4 is laminated on the non-skin side of the wearer, and the inner cover sheets 5F and 5R are laminated on the skin side of the wearer to form the outer surface of the diaper 1. Between the cover sheet 4 and the inner cover sheets 5F and 5R, thread rubber for forming the waist gather 3R and the leg gathers 3LL and 3LR is provided. Note that, instead of the thread rubber, an elastic member such as a strip-shaped rubber can be appropriately selected. The cover sheet 4 and the inner cover sheets 5F and 5R are an example of the outer body in the present disclosure.

[0016] In the present embodiment, the inner cover sheets 5F and 5R are separate bodies, but it is also possible to adopt a configuration in which a single inner cover sheet 5 extends from the front body region 1F to the rear body region 1R. Further, it is also possible to separately arrange a pad cover sheet that divides the cover sheet 4 and is arranged to cover the front body region 1F and the rear body region 1R and covers the non-skin side of the absorber 8. The configuration in which the inner cover sheet 5 is a single sheet and the configuration in which the cover sheet 4 is separated into a front side and a rear side are also included in the technical scope of the present invention.

[0017] For example, in order to suppress leakage of excrement, the cover sheet 4 and the inner cover sheets 5F and 5R can be made of a non-woven fabric made of a liquid-impermeable thermoplastic resin as the material. Here, examples of the liquid-impermeable thermoplastic resin include polyethylene (PE) and polypropylene (PP).

[0018] The diaper 1 has a backsheet 6, an absorber 8, and a topsheet 9, which are laminated in order on the wearer side surface of the cover sheet 4 and the inner cover sheets 5F and 5R. The backsheet 6 has a length in the longitudinal direction that reaches from the front body of the wearer via the crotch to the back body, and is a substantially rectangular parallelepiped sheet having a predetermined lateral width in the width direction orthogonal to the longitudinal direction. Both the absorber 8 and the topsheet 9 are sheet-like members having a substantially rectangular appearance similar to the backsheet 6, and are laminated in order on the backsheet 6 with the longitudinal direction coinciding with the longitudinal direction of the backsheet 6. The backsheet 6 is a sheet formed of a liquid-impermeable thermoplastic resin in order to suppress leakage of excrement. Further, the topsheet 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. This topsheet 9 has liquid permeability in part or all of it. Therefore, in a state where the diaper 1 is worn, the liquid excreted from the wearer penetrates through the topsheet 9 that can come into contact with the wearer's skin and enters the absorber 8, where it is absorbed. Examples of the liquid-permeable sheet include woven fabric, non-woven fabric, and porous film. Also, the topsheet 9 may have hydrophilicity. The topsheet 9 is an example of the skin surface side sheet in the present disclosure. Also, the backsheet 6 is an example of the non-skin surface side sheet in the present disclosure. Hereinafter, the laminate formed by laminating the backsheet 6, the absorber 8, and the topsheet 9 may be referred to as an interior body as a concept corresponding to the exterior body.

[0019] The absorbent body 8 has an absorbent core 8C made of one or more mats, and a core wrap sheet 7 that wraps the absorbent core 8C. The absorbent core 8C has a structure in which granular absorbent resin (polymer water absorbent material) such as SAP (Super Absorbent Polymer), which is a hydrophilic polymer having a cross-linked structure capable of absorbing and retaining water, is held in gaps between short fibers of cellulosic fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers obtained by hydrophilizing synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate. When the absorbent core 8C absorbs liquid excreted from the wearer, the absorbent resin held in the gaps between the short fibers swells to hold the liquid in the short fibers. The absorbent core 8C can have an appropriate shape according to the purpose, and can have, for example, a rectangular shape, an elliptical shape, or various other shapes. In this embodiment, the absorbent core 8C is an hourglass shape with a narrowed center.

[0020] The absorbent core 8C may be provided with a flow guide hole extending in the longitudinal direction, penetrating the skin-facing side and the non-skin-facing side, in the widthwise center of the crotch region 1B. If the absorbent core 8C is provided with a flow guide hole when the diaper 1 is not used in combination with an absorbent pad, the extension range of the flow guide hole includes the position opposite the urethral opening. Therefore, when the diaper 1 is not used in combination with an absorbent pad, urine produced by the wearer falls into the flow guide hole and spreads in the longitudinal direction, making it easier for the urine to be efficiently absorbed over a wide range of the absorbent core 8C.

[0021] The core wrap sheet 7 is a thin liquid-permeable sheet. By wrapping the absorbent core 8C with the core wrap sheet 7, it becomes difficult for the SAP of the absorbent core 8C described above to mix into other structures. Also, the collapse of the absorbent core 8C is suppressed. The core wrap sheet 7 can be formed of pulp fibers, and for example, tissue paper can be used. The core wrap sheet 7 may be a single sheet, but it may also be composed of two sheets, an upper sheet disposed on the skin side of the wearer and a lower sheet disposed on the non-skin surface side of the wearer, which wraps around the side surface and the skin side of the absorbent core 8C. When the core wrap sheet 7 is composed of two sheets, the widthwise end portions of the upper sheet may be structured to be wrapped by other sheets (for example, the side sheets 10L and 10R, the back sheet 6, and the top sheet 9 described later). Note that the absorber 8 is wrapped by the back sheet 6 and the top sheet 9, and the collapse can also be suppressed by these sheets, so the core wrap sheet 7 can also be omitted.

[0022] The back sheet 6, the absorber 8, and the top sheet 9 all extend from the front crotch region 1F to the back crotch region 1R. Therefore, when the back sheet 6, the absorber 8, and the top sheet 9 are laminated to cover the crotch (groin) of the wearer, both longitudinal ends of the back sheet 6, the absorber 8, and the top sheet 9 are in a state of being located on the ventral side and the dorsal side of the wearer. That is, the crotch of the wearer is in a state of being covered by the absorber 8 from the ventral side to the dorsal side of the wearer. Therefore, no matter whether the wearer discharges liquid out of the body in a posture with the abdomen facing downward or a posture with the back facing downward, the discharged liquid will contact the absorber 8 through the top sheet 9.

[0023] In addition, 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 at the long-side portions of the top sheet 9. Thread rubbers 10L1 and 10R1 are adhered to the side sheets 10L and 10R along the longitudinal direction. Therefore, the edge 4F4, which is the left edge of the front body region 1F of the cover sheet 4, and the edge 4R4, which is the left edge of the rear body region 1R, are joined to each other, and the edge 4F5, which is the right edge of the front body region 1F of the cover sheet 4, and the edge 4R5, which is the right edge of the rear body region 1R, are joined to each other. When the diaper 1 in the completed state as shown in FIG. 1 is formed, the side sheets 10L and 10R are drawn in the longitudinal direction by the contracting force of the thread rubbers 10L1 and 10R1 and rise from the top sheet 9 along the folding lines 10L2 and 10R2. As a result, three-dimensional gathers 3BL and 3BR that prevent the outflow of liquid from the left lower limb opening 2L and the right lower limb opening 2R are formed. The joining methods of the edges 4F4 and 4R4, and the edges 4F5 and 4R5 are not particularly limited, and for example, they can be performed by heat sealing, high-frequency sealing, ultrasonic sealing, etc.

[0024] Furthermore, the diaper 1 includes an end sheet 11F laminated on the wearer-side surface in the front body region 1F of the cover sheet 4 with the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L and 10R interposed therebetween, and an end sheet 11R laminated on the wearer-side surface in the rear body region 1R of the cover sheet 4. The end sheets 11F and 11R are strip-shaped sheets that are overlapped with the cover sheet 4 and the inner cover sheets 5F and 5R on one end side in the longitudinal direction of the top sheet 9. The end sheets 11F and 11R are non-water-permeable nonwoven fabrics that mainly reinforce the cover sheet 4 and the inner cover sheets 5F and 5R at the waist contact portion of the diaper 1. Further, adhesives are applied to the end sheets 11F and 11R respectively, and the adhesives adhere to the inner cover sheets 5F and 5R on the side of the body opening 2T. The end sheets 11F and 11R are disposed on the skin side of the laminate formed by the back sheet 6, the absorber 8, the top sheet 9, and the side sheets 10L and 10R, preventing the ends of the laminate from directly touching the skin and giving the wearer a sense of discomfort. Also, it prevents the contents of the absorber 8 from dissipating from the longitudinal ends of the absorber 8.

[0025] The end sheets 11F and 11R overlap with the interior body on the inner side in their longitudinal direction. When the diaper 1 and the absorbent pad are used in combination, by inserting the absorbent pad between the end sheets 11F and 11R and the interior body, displacement of the absorbent pad can be suppressed. Further, the end sheets 11F and 11R have a plurality of cuts that extend in the width direction and are arranged parallel to the longitudinal direction at the overlapping portion with the interior body. The cuts may be pre-cut, may be formed as perforations, and may be torn as necessary. The extending widths of the respective cuts may be different. The cuts may be arranged only in the end sheet 11R that becomes the back side during wearing, or may be arranged in the end sheet 11F that becomes the front side during wearing in addition to the end sheet 11R. In the present embodiment, cuts are arranged in both of the end sheets 11F and 11R. The end sheets 11F and 11R are joined to the outer body by a plurality of linear adhesive portions that extend in the width direction. The end sheets 11F and 11R are not joined to the interior body in the arrangement region of the cuts on the inner side in the longitudinal direction, but are joined to the interior body by a plurality of linear adhesive portions that extend in the width direction on the outer side in the longitudinal direction of the cuts. That is, the end sheets 11F and 11R are joined to the interior body and the outer body by a plurality of linear adhesive portions.

[0026] Figure 3 is a diagram schematically showing a state in which the diaper 1 according to the embodiment is unfolded and extended. Fig. 3(A) schematically shows the internal structure when the unfolded and extended diaper 1 is viewed from the left side. Fig. 3(B) schematically shows a plan view of the unfolded and extended diaper 1. In Fig. 3(B), illustration of the side sheets 10L and 10R and the end sheets 11F and 11R is omitted. In this figure, an inner cover sheet 5F is provided so as to cover the front body region 1F of the diaper 1, and an inner cover sheet 5R is provided so as to cover the back body region 1R of the diaper 1. And in the crotch region 1B, the inner cover sheets 5F and 5R do not exist. As shown in the figure, the crotch region 1B is narrower in width than the front body region 1F and the back body region 1R.

[0027] The cover sheet 4 has one end folded at the folding lines 4FF and 4RF shown in FIG. 2. In the front body region 1F, a plurality of thread rubbers (thread-like rubbers) 4F1 and 4F2 extend in the width direction in a stretched state and are adhesively bonded at intervals in the longitudinal direction between the front body region 1F of the cover sheet 4 and the inner cover sheet 5F. Also, in the rear body region 1R, thread rubbers (thread-like rubbers) 4R1 and 4R2 extend in the width direction in a stretched state and are adhesively bonded at intervals in the longitudinal direction between the rear body region 1R of the cover sheet 4 and the inner cover sheet 5R. The thread rubbers 4F1 and 4F2 are provided along the folding line 4FF that will form the upper edge of the front body region 1F when folded, in the order of thread rubber 4F1 and thread rubber 4F2 from the folding line 4FF side. The thread rubbers 4R1 and 4R2 are also provided along the folding line 4RF that will form the upper edge of the rear body region 1R when folded, in the order of thread rubber 4R1 and thread rubber 4R2 from the folding line 4RF side, similar to the thread rubbers 4F1 and 4F2. As a result, the longitudinal direction, which is the expansion and contraction direction, of the thread rubbers 4F1 and 4F2 will be provided on the cover sheet 4 in the direction that is the left - right direction of the diaper 1. Also, the longitudinal direction, which is the expansion and contraction direction, of the thread rubbers 4R1 and 4R2 will be provided on the cover sheet 4 in the direction that is the left - right direction of the diaper 1. Therefore, when the edge 4F4 and the edge 4R4 are joined to each other and the edge 4F5 and the edge 4R5 are joined to each other, the thread rubbers 4F1, 4F2 and the thread rubbers 4R1, 4R2 form a substantially annular expansion and contraction member that circulates along the body opening 2T, and exhibit the function as the waist gather 3R that contracts the body opening 2T in the body circumferential direction. That is, the thread rubbers 4F1, 4F2 and the thread rubbers 4R1, 4R2 exert a contraction force to make the diaper 1 adhere to the wearer and prevent a gap from being formed between the diaper 1 and the wearer's abdominal circumference. The thread rubbers 4F2 and 4R2 overlap the absorber 8 in a part on the crotch region 1B side.

[0028] For this reason, the longitudinal direction, which is the expansion and contraction direction, of the thread rubbers 4F1 and 4F2 will be provided on the cover sheet 4 in the direction that is the left - right direction of the diaper 1. Also, the longitudinal direction, which is the expansion and contraction direction, of the thread rubbers 4R1 and 4R2 will be provided on the cover sheet 4 in the direction that is the left - right 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 thread rubbers 4F1, 4F2 and the thread rubbers 4R1, 4R2 form a substantially annular expansion and contraction member that circulates along the body opening 2T, and perform the function as the waist gather 3R that contracts the body opening 2T in the body circumferential direction. That is, the thread rubbers 4F1, 4F2 and the thread rubbers 4R1, 4R2 exert a contraction force to make the diaper 1 adhere to the wearer and prevent a gap from being formed between the diaper 1 and the wearer's abdominal circumference. The thread rubbers 4F2 and 4R2 overlap the absorber 8 in a part on the crotch region 1B side.

[0029] The thread rubbers 4F1 and 4R1 are provided to extend in the width direction, parallel to each other with a certain interval in the longitudinal direction, along the portions that form the upper edges of the front body region 1F and the rear body region 1R shown in FIG. 1. The thread rubbers 4F2 and 4R2 are provided to extend in the width direction, parallel to each other with a predetermined interval in the longitudinal direction. The interval between the thread rubbers 4F1 and 4R1 is narrower than the interval between the thread rubbers 4F2 and 4R2. Therefore, in the state where the diaper 1 is worn, the thread rubbers 4F1 and 4R1 tightly compress the wearer's abdominal circumference relatively strongly above the thread rubbers 4F2 and 4R2. The thread rubbers 4F1 and 4R1 have the function of preventing the wearing position from shifting by closely attaching the diaper 1 to the wearer and preventing the discharge liquid from leaking from the abdomen and back.

[0030] The interval between the thread rubbers 4F2 and 4R2 is wider than that between the thread rubbers 4F1 and 4F2, and relieves the sense of pressure on the wearer caused by the contraction force of the thread rubbers 4F1 and 4R1. Also, when an absorbent pad is used in combination, it suppresses the displacement of the absorbent pad.

[0031] A plurality of thread rubbers 4F3 are adhesively bonded in a stretched state between the cover sheet 4 and the inner cover sheet 5F, and a plurality of thread rubbers 4R3 are adhesively bonded in a stretched state between the cover sheet 4 and the inner cover sheet 5R. The thread rubbers 4F3 and 4R3 are elastic members provided in a region further on the crotch region 1B side than the thread rubbers 4F2 and 4R2 among the thread rubbers provided between the cover sheet 4 and the inner cover sheets 5F and 5R. However, unlike the other thread rubbers that are adhesively bonded without interruption from the left end to the right end of the cover sheet 4 and the inner cover sheets 5F and 5R, the thread rubbers 4F3 and 4R3 are curved in the direction of the crotch region 1B and are located at the constricted portion of the hourglass-shaped absorbent core 8C, overlapping a part of the core wrap sheet 7. With this configuration, the arrangement region of the thread rubber 4F3 functions as the leg gathers 3LL and 3LR which are the leg circumference contraction parts, bringing the pair of leg circumference openings consisting of the left lower limb opening 2L and the right lower limb opening 2R into contact with the skin surface of the wearer and following the movement of the wearer's lower limbs.

[0032] The cover sheet 4 is folded along the folding lines 4FF and 4RF and extends to the areas where the thread rubbers 4F1 and 4R1 are arranged, and reinforces the areas where the thread rubbers 4F1 and 4R1 are arranged at the folded parts. The end sheets 11F and 11R are provided in the areas where the thread rubbers 4F2 and 4R2 are arranged where the cover sheet 4 folded along the folding lines 4FF and 4RF does not extend, and reinforce the areas where the thread rubbers 4F2 and 4R2 are arranged. A part of the thigh area 1B side of the thread rubbers 4F2 and 4R2 overlaps with the absorber 8, but does not overlap with the extending area of the absorption core 8C. They reinforce the areas where the thread rubbers 4F2 and 4R2 are arranged. A part of the thigh area 1B side of the thread rubbers 4F2 and 4R2 overlaps with the absorber 8, but does not overlap with the extending area of the absorption core 8C.

[0033] In the present application, the state where the sheets overlap is not limited to the form where the sheets to be overlapped overlap in a state where they are in full contact with each other, but is a concept including the form where a part of the sheets overlap. For example, one end side part of the end sheet 11F in the longitudinal direction of the back sheet 6 is overlapped in a state of touching a part of the cover sheet 4. The diaper 1 is formed by stacking the cover sheet 4, the end sheets 11F and 11R, the inner cover sheets 5F and 5R, and the side sheets 10L and 10R in addition to the back sheet 6 and the top sheet 9 with the absorber 8 sandwiched therebetween. Therefore, it can be said that the diaper 1 has a laminate in which these multiple sheets are stacked.

[0034] The end sheets 11F and 11R overlap the outer side in the longitudinal direction of the absorber 8 on the crotch region 1B side of their extending regions. On the crotch region 1B side of the extending region, the end sheets 11F and 11R are not joined to the interior body, and a non-adhesive portion is disposed between them and the top sheet 9 constituting the interior body. On the other hand, on the extension line of the cut, a joining portion 11S for joining the end sheets 11F and 11R to the exterior body is disposed. At the joining portion 11S, the end sheets 11F and 11R and the exterior body are firmly joined by an adhesive such as a hot melt adhesive or heat welding. If the entire extending range on the crotch region 1B side of the end sheets 11F and 11R is non-adhesive to the interior body and the exterior body, the absorbent pad P inserted into the cut disposed in the extending range is likely to move in the width direction, and there is a problem that the widthwise position of the absorbent pad P becomes unstable despite being inserted into the cut. To solve this problem, it is preferable to dispose a joining portion 11S that restricts the movement of the end sheets 11F and 11R with respect to the interior body and the exterior body on the outer side in the left-right direction of the cut.

[0035] In the diaper 1, among the plurality of linear adhesive portions, the one disposed closest to the crotch side, more specifically, the adhesive force of the one disposed closest to the crotch side among the linear adhesive portions that join the end sheets 11F and 11R and the interior body is stronger than that of the other linear adhesive portions. As a method of increasing the adhesive force, it is conceivable to thicken the linear adhesive portion, increase the amount of hot melt adhesive, or use an adhesive with a stronger adhesive force. The end sheets 11F and 11R cover the longitudinal ends of the absorber 8 from the skin side, and have a function of suppressing the leakage of SAP particles and pulp fibers, which are the contents of the absorption core 8C, from the longitudinal ends of the absorber 8. However, in the present embodiment, a large non-adhesive region is disposed on the crotch region 1B side of the end sheets 11F and 11R, and the non-adhesive region may float up from other regions. If the adhesive force of the linear adhesive portion is not sufficient, when a force is applied to the lifted non-adhesive region, the linear adhesive portion may peel off, and the contents of the absorption core 8C may leak. This can be particularly problematic when the absorbent pad P is inserted into the cut provided in the non-adhesive region. Therefore, by strengthening the adhesive force of the one disposed closest to the crotch side among the plurality of linear adhesive portions, the end sheets 11F and 11R are prevented from peeling off from the ends of the absorber 8, so that this problem does not occur.

[0036] FIG. 4 is a cross-sectional view showing a state in which an absorbent pad is held by an end sheet of a diaper. FIG. 4(A) is a view showing a state in which a plurality of cuts are provided in the end sheets 11F and 11R and a single absorbent pad P is passed through the plurality of cuts. FIG. 4(B) is a view showing a conventional example in which the longitudinal ends of the absorbent pad P are held by the end sheets 11F and 11R. In the present embodiment, a plurality of cuts extending in the width direction are arranged in parallel in the overlapping region of the end sheets 11F and 11R with the absorber 8. The wearer or caregiver of the diaper 1 can insert the longitudinal ends of the absorbent pad P into the cuts provided in the end sheets 11F and 11R. When the wearer or caregiver inserts the absorbent pad P into the cut, it becomes easy to maintain the positional relationship between the diaper 1 and the absorbent pad P. The positional relationship between the diaper 1 and the absorbent pad P If it becomes easier to maintain, problems such as discomfort to the wearer due to displacement and the problem that the absorbent pad P cannot correctly absorb the discharged liquid due to displacement, resulting in an increased frequency of changing the diaper 1, are less likely to occur.

[0037] Furthermore, in the present embodiment, the absorbent pad P can be held in the form shown in FIG. 4(A). More specifically, the absorbent pad P inserted between the top sheet 9 and the end sheets 11F, 11R is inserted into the cuts provided on the outer side in the longitudinal direction among the plurality of cuts provided in the end sheets 11F, 11R. Furthermore, the ends of the absorbent pad P exposed on the skin side of the end sheets 11F, 11R are inserted into the cuts provided on the inner side in the longitudinal direction among the plurality of cuts provided in the end sheets 11F, 11R. By this insertion, the longitudinal ends of the absorbent pad P come to be located on the non-skin side of the end sheets 11F, 11R.

[0038] In this way, by inserting the absorbent pad P into the cuts a plurality of times, the absorbent pad P and the diaper 1 are firmly engaged, and it becomes difficult for displacement to occur. Furthermore, the absorbent pad P is thick and has rigidity compared to the end sheets 11F, 11R which are non-woven fabric sheets. The absorbent pad P can lift the end sheets 11F, 11R more toward the skin side by engaging with the end sheets 11F, 11R. The end sheets 11F, 11R have a function of forming a pocket that regulates the flow of the discharged liquid that tries to flow beyond the longitudinal ends of the absorbent body 8. In the conventional example shown in FIG. 4(B), since there is no support on the end sheets 11F, 11R, the rising of the end sheets 11F, 11R is insufficient, a pocket of sufficient size is not formed, and the discharged liquid may flow over the pocket portion toward the body opening 2T side. When the discharged liquid flows over the pocket portion on the front body region side, it causes leakage from the front, and when it flows over the pocket portion on the back body region side, it causes leakage from the back.

[0039] On the other hand, when the absorbent pad P is arranged as shown in Fig. 4(A), due to the rigidity of the absorbent pad P, the end sheets 11F and 11R are likely to stand up on the skin side, making it easier to suppress the flow of the discharged liquid. Furthermore, the absorbent pad P itself has absorbency. The discharged liquid that flows longitudinally on the skin side of the absorbent pad P and enters the pocket portion is not only simply suppressed in its flow but also absorbed by the absorbent pad P in the pocket portion. Therefore, the discharged liquid that has entered the pocket portion is likely to be absorbed from the inner wall of the pocket portion, and it is less likely to flow back to the thigh region 1B side.

[0040] Fig. 5 is a view showing a state in which an absorbent pad is attached to the diaper. As shown in Fig. 5, by arranging a plurality of cuts in the end sheets 11F and 11R, passing the absorbent pad P from the cut on the body opening 2T side to the skin side and then from the cut on the thigh region 1B side to the non-skin side, the pocket portion can be strengthened and made to stand up easily. In addition, since the absorbent pad P extends over the entire pocket portion, absorbency can be added to the pocket portion. The diaper 1 according to the present embodiment can more effectively hold and absorb the discharged liquid that has entered the pocket portion.

[0041] In this way, the diaper 1 according to the present embodiment can hold the absorbent pad P and suppress displacement by inserting the absorbent pad P into a plurality of cuts arranged in the end sheets 11F and 11R. Furthermore, the diaper 1 according to the present embodiment can effectively absorb the discharged liquid that has entered the pocket portion by making the pocket portion easier to stand up and imparting absorbency to the pocket portion itself. When the discharged liquid flows to the ventral side and enters the pocket portion, ventral leakage can be suppressed, and when the discharged liquid flows to the dorsal side and enters the pocket portion, dorsal leakage can be suppressed.

[0042] Fig. 6 is a view showing the form of the cuts. Each drawing in Fig. 7 has the upward direction as the body opening 2 The T side and the downward direction are on the thigh length area 1B side. In Fig. 6(A), the cut is linear and extends in the width direction. Such a cut is easy to process. The cut may be pre-cut, or perforations may be made in the cut portion, and the user may break and separate the perforations to form the cut. By making perforations in the cut portion, it is possible to form a cut of a sufficient length according to the size of the absorbent pad P.

[0043] In Fig. 6(B), the cut is convex such that the central side in the width direction faces the longitudinal end side. More specifically, the inner side in the width direction is in a semi-elliptical shape bent toward the body opening 2T side. When the cut is arranged such that the central portion in the width direction is convex toward the body opening 2T side in this way, the opening formed by the cut spreads outward in the longitudinal direction with respect to the line connecting both ends in the width direction of the cut. When using a cut in such a form, the opening can be widened, and the insertion of the absorbent pad P becomes easy. Also, in the state where the absorbent pad P is attached, the absorbent pad P spreads in the width direction, and the width direction end of the absorbent pad P is longer than the line connecting the width direction ends of the cut. For this reason, in the worn state, the absorbent pad P is less likely to come out of the cut.

[0044] In Fig. 6(C), the cut is in a trapezoidal shape with the upper base side arranged on the body opening 2T side. Similar to Fig. 6(B), in Fig. 6(C) as well, the cut is convex such that the central side in the width direction faces the longitudinal end side. Even in the form as shown in Fig. 6(C), it is possible to obtain the same effect as Fig. 6(B).

[0045] FIG. 7 is a diagram showing an example of the end portion of the notch. The end sheets 11F and 11R are provided with reinforcing portions at at least one location on both end portions in the width direction of the notch. By providing the reinforcing portions, it is possible to suppress the breakage of the end portions in the width direction of the notch and the expansion of the notch. As an example, the reinforcing portion can be formed by heating and curing a part of the end sheets 11F and 11R. Further, it may be formed by joining the end sheets 11F and 11R to the exterior body with an adhesive such as a hot melt adhesive. Alternatively, a combination of a reinforcing portion formed by heat curing and a reinforcing portion formed by joining may be used.

[0046] Each figure shown in FIG. 7 is a diagram showing an example of a form that can be taken as the reinforcing portion. FIG. 7(A) is an example in which the reinforcing portion is arranged in a linear shape perpendicular to the extension line of the notch. By arranging the linear reinforcing portion perpendicular to the extension line of the notch, it is possible to suppress the expansion of the notch outward in the width direction.

[0047] FIG. 7(B) is an example in which the reinforcing portion is arranged in a U shape in which the bent portion contacts the extension line of the notch. The notch does not necessarily expand on the extension line of the notch and may tend to expand in an oblique direction. For example, this tendency becomes stronger when the shape of the notch is arranged as shown in FIGS. 7(B) and 7(C). By arranging the reinforcing portion in a U shape in which the bent portion contacts the extension line of the notch, it is possible to effectively suppress the expansion even when the notch tries to expand deviating from the extension line of the notch.

[0048] FIG. 7(C) is an example in which the reinforcing portion is arranged in a square bracket shape. Although the notch does not necessarily expand on the extension line of the notch, the probability of expanding on the extension line of the notch is the highest. When the reinforcing portion is arranged as shown in FIG. 7(C), a high expansion suppressing effect can be obtained when the notch tries to expand on the extension line of the notch, and an expansion suppressing effect can also be obtained when the notch tries to expand obliquely with respect to the notch.

[0049] FIG. 7(D) shows an example in which the reinforcing portions are arranged concentrically around the widthwise end of the notch. By arranging the reinforcing portions as shown in FIG. 7(D), an expansion suppressing effect can be obtained regardless of the direction in which the notch expands from the widthwise end of the notch, so it is preferable. It can be said that it is.

[0050] FIG. 8 is a diagram showing an example of a restricting portion provided in the notch. In the example of this figure, the notch is a perforation, and a restricting portion straddling the notch is arranged outside the notch in the width direction. The restricting portion may be formed by thermosetting a part of the end sheets 11F and 11R, similar to the reinforcing portion shown in FIG. 7. In the example of this figure, the restricting portion is arranged at a right angle to the notch so as to straddle the notch. When the perforation is broken and separated to form a notch, the breaking of the perforation once stops at the restricting portion, and no further breaking occurs unless a force is intentionally applied. In this configuration, the restricting portion prevents the notch from being easily formed, and it becomes easy to cope with absorbent pads P of various widths. By adopting this configuration, it is possible to cope with absorbent pads P having a plurality of sizes of lateral widths with a single notch.

[0051] Note that the restricting portion may be created by increasing the distance between the holes of the perforation at a portion corresponding to the restricting portion, or may be created by overlapping the thermosetting portion serving as the restricting portion with the perforation so that the perforation is difficult to break at that portion. Further, a hot melt adhesive may be applied to the non-skin side of the restricting portion to join the sheet disposed on the non-skin side of the end sheets 11F and 11R and the end sheets 11F and 11R to serve as the restricting portion. When the restricting portion is provided, since the end sheets 11F and 11R are joined to other sheets at the restricting portion and are not released, it is necessary to release the joining between the restricting portion and the other sheets in order for the wearer or caregiver to insert the absorbent pad P beyond the restricting portion. Thus, various configurations can be adopted as the restricting portion, and by providing the restricting portion and making it possible to gradually widen the lateral width, absorbent pads having various lateral widths can be used in combination with the diaper 1.

[0052] As described above, the present embodiment has been explained, but the content of the present invention is not limited to the above embodiment. For example, the content of the present invention is also applicable when a tape-type diaper is used in combination with an absorbent pad. In the present embodiment, an example in which two cuts are provided at each of the end sheets 11F and 11R has been illustrated, but it is also possible to provide three or more cuts. When providing three or more cuts, the width of the cut may be changed for each set. If cuts with different widths are provided, the diaper 1 can be used in combination with absorbent pads of various sizes.

[0053] In the present embodiment, the cuts are arranged on both of the end sheets 11F and 11R, but the cuts may be arranged on only one of the end sheets 11F and 11R. More specifically, the cuts may be provided only on the end sheet 11R in the back body region 1R. Generally, for an elderly person who is a wearer of the diaper 1, it is relatively easy to stretch the hand downward to the lower abdomen, but it is difficult to turn it backward. When attaching the absorbent pad P, it is also difficult to adjust the position of the absorbent pad P in the back body region 1R. Therefore, by providing a cut in the end sheet 11R and fixing the absorbent pad P in advance, it is possible to facilitate wearing and adjustment while suppressing back leakage.

[0054] The features included in each of the above-disclosed embodiments and their modifications can be combined with each other.

Explanation of Reference Numerals

[0055] 1 ·· Diaper 1F ·· Front body region 1B ·· Crotch region 1R ·· Back body region 2R ·· Right lower limb opening 2L ·· Left lower limb opening 3BL, 3BR ·· Three-dimensional gathers 3R ·· Waist gather 3LL, 3LR ·· Leg gathers 4 ·· Cover sheet 4F1, 4F2, 4F3, 4R1, 4R2, 4R3 ·· Thread rubber 4F4, 4R4, 4F5, 4R5 ··· Edge 4FF, 4RF ··· Fold line 5F, 5R ··· Inner cover sheet 6 ··· Back sheet 7 ··· Core wrap sheet 8 ··· Absorbent body 9 ··· Top sheet 10L, 10R ··· Side sheet 10L1, 10R1 ··· Thread rubber 11F, 11R ··· End sheet P ··· Absorbent pad

Claims

1. An interior body including an absorber, disposed so as to cover the crotch region located at the wearer's crotch in the worn state; An exterior body disposed so as to cover at least the front body region located around the wearer's abdomen and the back body region located around the wearer's back in the worn state, with at least both longitudinal ends of the interior body joined thereto; An end sheet extending from the interior body to the exterior body, having a non-adhesive portion that is at least non-adhesive to the exterior body and covers the skin side of the interior body, extending in the width direction at the non-adhesive portion, not reaching the ends in the width direction, and having a plurality of cuts arranged in parallel to the longitudinal direction into which an absorbent pad to be used in combination can be inserted; An absorbent article comprising the above.

2. In a part of the non-adhesive portion, there is a joining portion that is disposed outside the width direction of the ends of the cuts and joins the exterior body and the end sheet. The absorbent article according to Claim 1.

3. The end sheet extends in the width direction and is joined to the interior body and the exterior body by a plurality of linear adhesive portions spaced apart from each other in the longitudinal direction, The linear adhesive portion disposed most inward in the longitudinal direction has a stronger adhesive force than the other linear adhesive portions. The absorbent article according to Claim 1 or 2.

4. Both widthwise ends of the front body region and the back body region of the exterior body are joined, and both longitudinal ends of the interior body are joined to form a body opening and a pair of leg openings. The absorbent article according to Claim 1 or 2.

5. The cuts are disposed on the back side during wearing. The absorbent article according to Claim 1 or 2.

6. The cuts are disposed on both the ventral side and the dorsal side during wearing. The absorbent article according to Claim 1 or 2.

7. At least one reinforcing portion is provided on the extension line of the ends in the width direction of the cuts. The absorbent article according to Claim 1 or 2.

8. The cuts are serrations. The absorbent article according to Claim 1 or 2.

9. A regulating portion for suppressing the separation of the serrations is provided on the end side in the width direction of the extending region of the cuts. The absorbent article according to Claim 8.

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