JP2024014704A - absorbent articles - Google Patents

Abstract

[Problem] To provide an absorbent article that allows easy attachment of an absorbent pad. [Solution] An absorbent article having a front body region facing the wearer's abdomen, a rear body region facing the wearer's back, and a crotch region located between the front body region and the rear body region and in which an absorbent body is disposed, the absorbent article includes a front exterior part that forms the exterior surface of the non-skin-facing side of the front body region, and a rear exterior part that forms the exterior surface of the non-skin-facing side of the rear body region, an exterior body that forms a waist opening through which the wearer's waist is inserted and a pair of leg openings through which the wearer's thighs are inserted, an absorbent body that is positioned on the skin-facing side of the exterior body across the front exterior part and the rear exterior part and is narrower than the front exterior part and the rear exterior part, and a contraction member that is bonded to the exterior body in a stretched state and contracts the edges of the pair of leg openings, a convex part extending in the width direction is formed on the skin-facing side of the absorbent body due to contraction of the contraction member, and the contraction member is visible from the skin-facing side of the exterior body. [Selected Figure] Figure 1

Description

The present invention relates to absorbent articles.

Disposable diapers, which are absorbent articles, are known (Patent Document 1). Also known is an absorbent pad that is used by being placed between a disposable diaper or underwear and the skin surface (Patent Document 2).

Unexamined Japanese Patent Publication No. 2019-68949 Japanese Patent Application Publication No. 2016-198142

Generally, absorbent articles and absorbent pads are often used in combination. An object of the present invention is to provide an absorbent article to which an absorbent pad can be easily attached.

The absorbent article according to one aspect of the present invention has a front body region facing the wearer's abdomen, a back body region facing the wearer's back, and located between the front body region and the back body region. , an absorbent article in which the crotch region in which the absorbent body is disposed is connected, the front exterior part forming the exterior surface on the non-skin side of the front body region, and the exterior surface on the non-skin side of the back body region. a rear exterior part forming an exterior surface, and an exterior body forming a waist opening through which the wearer's torso is inserted and a pair of leg openings through which the wearer's thighs are inserted; , an absorbent body disposed astride the front exterior part and the rear exterior body on the skin side of the exterior body and having a width narrower than the front exterior part and the rear exterior body; and an absorbent body that is bonded to the exterior body in a stretched state. a contracting member that contracts the edges of the pair of leg openings, and a convex portion extending in the width direction is formed on the skin side of the absorbent body by contraction of the contracting member. The shrinkable member is visible from the skin side of the exterior body.

According to the present invention, an absorbent article to which an absorbent pad can be easily attached can be realized.

FIG. 1 is an external perspective view of a diaper according to an embodiment. FIG. 2 is an exploded perspective view of the diaper according to the embodiment. FIG. 3 is a diagram schematically showing a state in which the diaper according to the embodiment is unfolded and stretched. FIG. 4 is a diagram showing grooves formed in the width direction of the diaper according to the embodiment. FIG. 5 is a diagram schematically showing the diaper according to the embodiment in an unfolded and stretched state from the non-skin side. FIG. 6 is a diagram schematically showing the diaper according to the embodiment in an unfolded and stretched state from the skin side. FIG. 7 is a diagram schematically showing a state in which the diaper according to the modified example is unfolded and stretched.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Diapers according to embodiments 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 the configurations of these embodiments.

<Embodiment>
FIG. 1 is a perspective view of a pants-type disposable diaper for adults (hereinafter simply referred to as a "diaper") according to an embodiment. In a diaper, the longitudinal direction is defined as the direction that connects the front body, which is arranged to face the wearer's abdomen, and the back body, which is arranged to face the wearer's back. Between the front body (on one side in the longitudinal direction) and the back body (on the other side in the longitudinal direction) (at the center in the longitudinal direction) is an inseam that is placed at the wearer's crotch (located opposite the crotch). Department is located. Further, when the diaper is worn by a 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. Further, the direction connecting the skin side and the non-skin 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. In addition, viewing from the thickness direction is considered to be a planar view. The diaper 1 has a length along the longitudinal direction and a width along the width direction orthogonal to the longitudinal direction, and is worn on the wearer's crotch. Moreover, the terminology used in this application regarding direction shall mean the direction corresponding to the front, back, left, and right of the wearer when the diaper 1 is worn by the wearer. For example, in the present application, the left-right direction refers to the direction that corresponds to the left and right sides of the wearer when the diaper 1 is worn by the wearer.

In this embodiment, as an example of an absorbent article, a pants-type absorbent article having a cylindrical structure has a torso opening into which the wearer's abdominal circumference enters, and a pair of left and right leg openings through which the wearer's left and right lower legs are inserted. Although a disposable diaper is exemplified, the "absorbent article" referred to in this application is not limited to pants-type disposable diapers for adults. The term "absorbent article" as used herein includes pants-type disposable diapers for children. In addition, a cylindrical structure can be created by attaching a tape fixed near one end of a sheet-like member that covers the wearer's crotch (pubic area) from the front body to the back body and pasting it near the other end of the sheet-like member. This includes various forms of absorbent articles that can wrap around the abdominal circumference and crotch, such as tape-type disposable diapers.

The diaper 1 has an inseam region 1B that corresponds to the crotch region that covers the wearer's genitals (inseam) when worn, and a region that corresponds to the front body around the wearer's waist and that covers the wearer's abdomen side. It has a front body region 1F for covering, and a back body region 1R, which is a part of the wearer's torso that corresponds to the back body and is for covering the wearer's back side. 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 rear side of the crotch region 1B. The front body region 1F and the crotch region 1B of the diaper 1 are connected, and the back body region 1R and the crotch region 1B are connected.

Since the diaper 1 in this 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 back body region The right edges of the region 1R are joined together. Therefore, in the diaper 1, a torso opening 2T, which is a torso opening, is formed by the upper edge of the front body region 1F and the upper edge of the rear body region 1R. Further, in the diaper 1, a left lower leg opening 2L is formed on the left side of the crotch area 1B, which is not joined, and a right lower leg opening 2R is formed on the right side of the crotch area 1B. A circumferential opening is formed. The diaper 1 is configured such that the wearer's left lower leg is inserted through the left lower leg opening 2L, the wearer's right lower leg is inserted through the right lower leg opening 2R, and the wearer's torso is inserted into the torso opening 2T. When worn, the front body area 1F is placed on the wearer's abdomen side, the back body area 1R is placed on the wearer's back side, and the left lower leg opening 2L and right lower leg opening 2R are placed on the wearer's thigh. It is fixed to the wearer's body in a state surrounding the body. Since the diaper 1 is fixed to the wearer's body in this manner, the wearer can move freely while wearing the diaper 1.

In the diaper 1, absorbers capable of absorbing and retaining liquid are arranged mainly around the crotch region 1B. The diaper 1 also includes a left lower leg opening that surrounds the thigh of the wearer's left lower leg in order to prevent a gap from forming between the diaper 1 and the wearer's skin as a liquid outflow path. Three-dimensional gathers 3BL are provided at 2L, three-dimensional gathers 3BR are provided at the right lower leg opening 2R surrounding the thigh of the wearer's right lower leg, and waist gathers 3R are provided at a region surrounding 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, 3BR and the waist gathers 3R adhere to the wearer's skin due to the elasticity of the rubber thread. Further, the leg gathers 3LL and 3LR prevent a gap from being created between the wearer's groin and the diaper 1. Therefore, the liquid discharged from the wearer's genitals is absorbed into the absorbent body of the diaper 1 without leaking from the diaper 1.

The diaper 1 can be used in combination with an inner pad (not shown). The inner pad is a substantially rectangular absorbent article that includes an absorbent body and absorbs drained liquid. When the diaper 1 and the inner pad are used in combination, the inner pad is placed on the skin side of the diaper 1 so as to come into contact with the wearer's discharge hole. The drained liquid is first absorbed by the inner pad, and only the drained liquid that cannot be absorbed by the inner pad reaches the absorbent body of the diaper 1 and is further absorbed. Therefore, even if the amount of discharged liquid is large, leakage of the discharged liquid from the diaper 1 can be prevented. Further, if the amount of drained liquid is small and the inner pad can absorb all of it, even if the drained liquid occurs, only the inner pad needs to be replaced, which can reduce the cost of assistance. Moreover, the diaper 1 can be used for a long time.

FIG. 2 is an exploded perspective view of the diaper 1 according to the embodiment. The front body region 1F side of the diaper 1 includes a cover sheet 4 provided on the most non-skin side, and an inner cover sheet 5F bonded to the cover sheet 4. Further, on the rear body region 1R side of the diaper 1, there is a cover sheet 4 provided on the most non-skin surface side, and an inner cover sheet 5R bonded to the cover sheet 4. Inner cover sheets 5F and 5R reinforce cover sheet 4 in front body region 1F and back body region 1R, and these sheets protect the internal structure of diaper 1 from the outside.

When worn by the wearer, the cover sheet 4 is provided on the wearer's non-skin side to form the outer surface of the diaper 1, and the inner cover sheets 5F and 5R are provided on the wearer's skin side. They are laminated to form the exterior body of the diaper 1. A rubber thread for forming the waist gathers 3R and leg gathers 3LL, 3LR is provided between the cover sheet 4 and the inner cover sheets 5F, 5R. Note that, instead of the rubber thread, an elastic member such as a band-shaped rubber can be appropriately selected.

The cover sheet 4 and the inner cover sheets 5F, 5R may be made of a nonwoven fabric made of liquid-impermeable thermoplastic resin, for example, in order to suppress leakage of excrement. Here, examples of the liquid-impermeable thermoplastic resin include polyethylene (PE) and polypropylene (PP). The cover sheet 4 and the inner cover sheet 5F are examples of front exterior parts that cover the non-skin side of the front body area of the diaper 1, and the cover sheet 4 and the inner cover sheet 5R are examples of the front exterior part that covers the non-skin side of the front body area of the diaper 1. This is an example of a rear exterior part that covers the front side.

In addition, instead of the cover sheet 4, a cover sheet 4F that covers a portion corresponding to the inner cover sheet 5F in the front body region 1F and a cover sheet 4R that covers a portion corresponding to the inner cover sheet 5R in the back body region 1R are independently provided. It is also possible to provide one. In this case, the area where the cover sheet 4F and the inner cover sheet 5F are arranged becomes the front exterior part, and the area where the cover sheet 4R and the inner cover sheet 5R are arranged becomes the rear exterior part.

A cover sheet 4F provided in the front body region 1F and a cover sheet 4 provided in the back body region 1R.
When R is provided as a separate body, a pad cover sheet 4B can be provided in the crotch region 1B. By providing the pad cover sheet 4B in the crotch region 1B, the diaper 1 according to the present embodiment can protect the internal structure even when the cover sheets 4F and 4R are provided separately.

Hereinafter, as a concept corresponding to the absorbent body 8 and the combination of the absorbent body 8 with the back sheet 6, top sheet 9, and side sheets 10L and 10R, the cover sheet 4 provided in the front body area 1F and the accompanying The inner cover sheet 5F on which the thread rubber is arranged, the cover sheet 4 provided in the back body region 1R, and the inner cover sheet 5R on which the thread rubber is arranged incidentally may be collectively referred to as an exterior sheet. . The exterior sheet extends from the front body region 1F to the back body region R and forms the exterior body of the diaper 1.

When the cover sheet 4 is divided into a front body region 1F and a back body region 1R to form a cover sheet 4F and a cover sheet 4R, and a pad cover sheet 4B that protects the crotch region 1B is provided, these sheets serve as exterior sheets.

The diaper 1 includes a back sheet 6, an absorbent core 8, and a top sheet that are laminated in this order on the wearer side surfaces of each sheet forming the exterior body of the diaper 1, that is, the cover sheet 4 and the inner cover sheets 5F and 5R. 9. The back sheet 6 is a substantially rectangular sheet that has a length in the longitudinal direction that reaches from the front body of the wearer via the crotch to the back body, and has 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 having a substantially rectangular appearance like the back sheet 6, and are placed against the back sheet 6 with their longitudinal directions matching the longitudinal direction of the back sheet 6. They are stacked in order. The back sheet 6 is a sheet made of a thermoplastic liquid-impermeable resin such as a polyethylene film in order to suppress leakage of the discharged liquid that has flowed into the absorber 8 . The backsheet 6 may be made of a moisture permeable material in order to suppress stuffiness when worn.

The top sheet 9 is a sheet-like member disposed on the wearer's skin side when viewed from the absorbent body 8 so as to cover the water-absorbing surface of the absorbent body 8 . This top sheet 9 has liquid permeability in part or in whole. Therefore, when the diaper 1 is worn, exudates from the wearer enter the absorbent body 8 through the top sheet 9 that can come into contact with the wearer's skin, and are absorbed there. Examples of liquid-permeable sheets constituting the top sheet 9 include woven fabrics, nonwoven fabrics, and porous films. Moreover, the top sheet 9 may have hydrophilicity.

The absorbent core 8 has an absorbent core 8c made of one or more mats, and a core wrap sheet 7 that wraps around the absorbent core 8c. The absorbent core 8c absorbs water into the gaps between short fibers of cellulose fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers made of synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate that have been subjected to a hydrophilic treatment. It has a structure that holds particulate absorbent resin (polymer water absorbing material) such as SAP (Super Absorbent Polymer), which is a hydrophilic polymer with a crosslinked structure that can absorb and retain water. . When the absorbent core 8c absorbs liquid excreted by the wearer, it swells the absorbent resin held in the gaps within the short fibers and retains the liquid within the short fibers. The absorbent core 8c can take an appropriate shape depending on the purpose, for example, a rectangular shape, an elliptical shape, and various other shapes. In this embodiment, the absorbent body 8 is disposed across the front exterior part and the rear exterior part, centering on the crotch region 1B, and is narrower than the front exterior part and the rear exterior part. The absorbent core 8c has an hourglass shape that is narrowed near the crotch region 1B. Furthermore, in the present embodiment, the absorbent body 8 is arranged in a slightly biased manner so that the end on the back body region 1R side is closer to the end in the longitudinal direction.

The absorbent core 8c according to the present embodiment is provided with a groove 8H, which is a groove extending in the longitudinal direction, at the center in the width direction of the crotch region 1B. The groove 8H may be a through groove that penetrates the skin side and the non-skin side of the absorbent core 8c, or may be a compressed groove that compresses the widthwise central portion of the absorbent core 8c parallel to the longitudinal direction. good. The extension range of the groove 8H includes a position corresponding to the urethral opening. Therefore, urine generated by the wearer flows into the grooves 8H, spreads in the longitudinal direction, and is efficiently absorbed in a wide range of the absorbent core 8c. Note that the groove 8H is not essential, and a configuration may be adopted in which it is not provided.

The core wrap sheet 7 is a thin, liquid-permeable sheet that wraps around the absorbent core 8c. By wrapping the absorbent core 8c with the core wrap sheet 7, the absorbent core 8c is prevented from losing its shape, and the SAP particles inside the absorbent core 8c are less likely to mix with other structures. The core wrap sheet 7 can be made of pulp fiber, and tissue paper can be used as an example. The core wrap sheet 7 may be a single sheet, but includes an upper sheet placed on the wearer's skin side, and a lower sheet placed on the wearer's non-skin side and wrapped around the side of the absorbent core and the skin side. The sheet may be composed of two sheets. When the core wrap sheet 7 is composed of two sheets, a structure in which the widthwise end of the upper sheet is wrapped by other sheets (for example, side sheets 10L, 10R, back sheet 6, and top sheet 9, which will be described later) It may be . Note that the absorbent body 8 is wrapped in the back sheet 6 and the top sheet 9, and since these sheets can also prevent the absorbent body from losing its shape, the core wrap sheet 7 may not be provided. In this embodiment, the core wrap sheet 7 is formed in a rectangular shape.

The backsheet 6, absorbent core 8, and topsheet 9 all extend from the front body region 1F to the back body region 1R. Therefore, when the backsheet 6, absorbent body 8, and topsheet 9 are laminated to cover the wearer's genitals (crotch), both longitudinal ends of the backsheet 6, absorbent body 8, and topsheet 9 are covered by the wearer's genitals. It is located on the ventral and dorsal sides of the body. That is, the wearer's genitals are covered with the absorbent body 8 from the ventral side to the back side of the wearer. Therefore, even if the wearer discharges the liquid from the body in either a posture with the belly facing down or a posture with the back facing downward, the discharged liquid will come into contact with the absorbent body 8 via the top sheet 9. I will do it.

Moreover, the diaper 1 has long and narrow band-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. Rubber threads 10L1 and 10R1 are bonded to the side sheets 10L and 10R along the longitudinal direction. Therefore, the edge 4F4 that is the left edge of the cover sheet 4 in the front body region 1F and the edge 4R4 that is the left edge of the cover sheet 4 in the back body region 1R are joined to each other, and the The right edge 4F5 of the cover sheet 4 and the right edge 4R5 of the cover sheet 4 in the back body region 1R are joined to each other, resulting in a diaper in the completed state as shown in FIG. 1, the side sheets 10L, 10R are pulled in the longitudinal direction by the contraction force of the rubber threads 10L1, 10R1 and rise from the top sheet 9 along the folding lines 10L2, 10R2. As a result, three-dimensional gathers 3BL and 3BR are formed that prevent liquid from flowing out from the left lower limb opening 2L and the right lower limb opening 2R. Note that the method of joining the edges 4F4 and 4R4, and the edges 4F5 and 4R5 is not particularly limited, but can be performed by, for example, heat sealing, high frequency sealing, ultrasonic sealing, or the like.

The back sheet 6, core wrap sheet 7, top sheet 9, and side sheets 10L and 10R are formed longer in the longitudinal direction than the absorbent core 8c in the front body region 1F and the back body region 1R. Therefore, a laminated portion having intermediate rigidity, which is formed by laminating the above-mentioned sheets, continues in a constant region in the longitudinal direction of the longitudinal end portion of the absorbent core 8c having high rigidity. A portion of the rubber threads 4F2 and 4R2 constituting the waist gathers 3R overlaps the laminated portion and is biased inward in the width direction.

Furthermore, the diaper 1 includes an end sheet 11F that is laminated on the wearer side surface of the front body region 1F side of the cover sheet 4, sandwiching the back sheet 6, absorbent body 8, top sheet 9, and side sheets 10L and 10R. , and an end sheet 11R laminated on the wearer side surface of the cover sheet 4 on the rear body region 1R side. The end sheets 11F and 11R are strip-shaped sheets that are stacked on the cover sheet 4 and the inner cover sheets 5F and 5R at one end side in the longitudinal direction of the top sheet 9. The end sheets 11F and 11R are non-water permeable non-woven fabrics, and mainly reinforce the cover sheet 4 and the inner cover sheets 5F and 5R at the waist contact portions of the diaper 1. Further, an adhesive is applied to the end sheets 11F and 11R, and the end sheets 11F and 11R are bonded to the inner cover sheets 5F and 5R. The end sheets 11F and 11R are arranged closer to the skin surface than the laminate formed by the back sheet 6, absorbent body 8, top sheet 9, and side sheets 10L and 10R, so that the longitudinal ends of the laminate directly contact the skin surface. Prevents the wearer from feeling uncomfortable when touched.

FIG. 3 is a diagram schematically showing a state in which the diaper 1 according to the embodiment is unfolded and stretched. FIG. 3(A) schematically shows the internal structure of the diaper 1 in an expanded and stretched state when viewed from the left side. FIG. 3(B) schematically shows a plan view of the diaper 1 in an expanded and stretched state. Note that in FIG. 3(B), illustration of the side seats 10L and 10R is omitted. The cover sheet 4 is folded back to the skin side at the folding line 4FF shown in FIG. 2 at the end of the front body region 1F, and folded back to the skin side at the folding line 4FR shown in FIG. 2 at the end of the back body region 1R. It has been folded back. In the above-mentioned waist gathers 3R, thread rubber (thread-like rubber) 4F1 and 4F2 are bonded in a stretched state to the cover sheet 4 in the front body region 1F, and thread rubber (thread-like rubber) 4R1 is attached to the cover sheet 4 in the back body region 1R. , 4R2 are bonded together in a stretched state. The rubber threads 4F1 and 4F2 are provided in the order of the rubber thread 4F1 and the rubber thread 4F2 from the folding line 4FF side along the folding line 4FF which will form the upper edge of the front body region 1F when folded back. Similarly to the rubber threads 4F1 and 4F2, the rubber threads 4R1 and 4R2 are also folded from the folding line 4RF side along the folding line 4RF that forms the upper edge of the back body region 1R when folded back. They are arranged in this order.

Therefore, the rubber threads 4F1 and 4F2 are provided on the cover sheet 4 in the front body region 1F so that the longitudinal direction, which is the direction of expansion and contraction, is the left-right direction of the diaper 1. Further, the rubber threads 4R1 and 4R2 are provided on the cover sheet 4R in the back body region 1R so that the longitudinal direction, which is the direction of expansion and contraction, is the left-right direction of the diaper 1. Therefore, when the edges 4F4 and 4R4 are joined to each other, and the edges 4F5 and 4R5 are joined to each other, the rubber threads 4F1, 4F2 and the rubber threads 4R1, 4R2 can be inserted around the wearer's waist, as shown in FIG. A substantially annular elastic member is formed that goes around the torso opening 2T, which is the torso opening, and functions to contract the torso opening 2T in the direction around the waist. That is, the rubber threads 4F1, 4F2 and the rubber threads 4R1, 4R2 exhibit contractile force to bring the diaper 1 into close contact with the wearer, thereby preventing a gap from being formed between the diaper 1 and the wearer's abdominal circumference. The rubber thread 4F2 and the rubber thread 4R2 overlap the core wrap sheet 7 of the absorbent core 8 in a part of the crotch region 1B side. The shrinkage force of each of the rubber thread 4F1 and the rubber thread 4F2, and of the rubber thread 4R1 and the rubber thread 4R2 may be constant in the width direction.

The rubber threads 4F1 and 4R1 extend in parallel in the width direction at a constant interval along the upper edges of the front body region 1F and the back body region 1R shown in FIG. It is set up like this. The rubber threads 4F2 and 4R2 are provided so as to extend in the width direction in parallel with each other at a predetermined interval. The distance between the rubber threads 4F1 and 4R1 is narrow, and the rubber threads 4F1 and 4R1 relatively strongly tighten the abdominal circumference of the wearer above the rubber threads 4F2 and 4R2 when the diaper 1 is worn. The rubber threads 4F1 and 4R1 have the function of keeping the diaper 1 in close contact with the wearer to prevent the wearer from shifting the wearing position, and also to prevent discharge fluid from leaking from the abdomen or back.

The distance between the rubber threads 4F2 and 4R2 is wider than that of the rubber threads 4F1 and 4F2, which alleviates the feeling of pressure on the wearer caused by the contraction force of the rubber threads 4F1 and 4R1. Furthermore, when an inner pad is used, displacement of the inner pad is suppressed. That is, the contraction force of the rubber threads 4F1 and 4R1 is larger than the contraction force of the rubber threads 4F2 and 4R2.

Further, in the front body region 1F, a rubber thread 4F3 is bonded to the cover sheet 4 in a stretched state, and in the back body region 1R, a rubber thread 4R3 is bonded to the cover sheet 4 in a stretched state. The rubber thread 4F3 is an elastic member provided on the crotch area 1B side of the rubber thread 4F2 of the cover sheet 4. The rubber thread 4R3 is an elastic member provided further to the crotch region 1B side of the rubber thread 4R2 of the cover sheet 4. However, unlike other thread rubbers that are bonded seamlessly from the left end to the right end of the cover sheet 4, the thread rubbers 4F3 and 4R3 are arranged curved in the direction of the crotch area 1B, and are arranged in a curved manner in the direction of the hourglass-shaped absorbent core. In some parts, it overlaps with a part of the core wrap sheet 7. With this configuration, the arrangement regions of the thread rubber 4F3 and 4R3 can function as leg gathers 3LL and 3LR that wrap around the left lower limb opening 2L and the right lower limb opening 2R.

In the front body region 1F, the cover sheet 4 is folded back along a folding line 4FF and extends to the region where the rubber thread 4F1 is arranged, and the folded portion reinforces the region where the rubber thread 4F1 is arranged. In the back body region 1R, the cover sheet 4 is folded back along a folding line 4FR and extends to the region where the rubber thread 4R1 is arranged, and the folded portion reinforces the region where the rubber thread 4R1 is arranged. The end sheet 11F is provided in the region where the rubber thread 4F2 is arranged, where the cover sheet 4 folded back along the folding line 4FF does not extend, and reinforces the region where the rubber thread 4F2 is arranged. The end sheet 11R is provided in the region where the rubber thread 4R2 is arranged, where the cover sheet 4 folded back along the folding line 4FR does not extend, and reinforces the region where the rubber thread 4R2 is arranged. The thread rubber 4F2, 4R2 and the end sheets 11F, 11R partially overlap the absorbent body 8 on the crotch region 1B side, but do not overlap with the extension region of the absorbent core 8c.

Note that in the present application, the state in which the sheets overlap is not limited to a state in which the sheets are overlapped in full contact with each other, but is a concept that includes a state in which parts of the sheets overlap. For example, the end sheets 11F are stacked such that a portion of one end in the longitudinal direction of the back sheet 6 touches a portion of the cover sheet 4. The diaper 1 is formed by stacking a back sheet 6 and a top sheet 9 with an absorbent body 8 in between, as well as a cover sheet 4, end sheets 11F and 11R, inner cover sheets 5F and 5R, and side sheets 10L and 10R. Therefore, it can be said that it has a laminate in which a plurality of these sheets are stacked.

A pants-type disposable diaper like the diaper 1 of the present disclosure is suitable for an active wearer because it can easily follow the wearer's own movements compared to a tape-type disposable diaper. However, pants-type disposable diapers require more effort to put on and take off than tape-type diapers, which can be put on simply by operating the fastening tape. Therefore, by arranging an absorbent pad between the diaper 1 and the wearer's skin and replacing the absorbent pad when discharge occurs, the number of times the diaper 1 is put on and taken off is reduced, and this effort is reduced. I can do it.

In order to use an absorbent pad in combination to reduce the number of times the diaper 1 is put on and taken off, the absorbent pad needs to be properly placed under the wearer's crotch. A certain degree of skill is required to properly contact the absorbent pad against the wearer's crotch. If the position of the absorbent pad is incorrect, the leak prevention means such as three-dimensional gathers that the absorbent pad itself has will not function properly, and the absorbent body 8 of the diaper 1 will not function properly.
It may be easier for waste to flow into the area. Additionally, when the wearer exercises, the absorbent pad may become dislodged from the wearer's crotch area and may no longer function properly. If the absorbent pad does not function properly and exudates flow into the absorbent core 8 of the diaper 1, the diaper 1 will need to be changed more frequently.

In this embodiment, when the diaper 1 is used in combination with an absorbent pad, the absorbent pad can be brought into proper contact with the wearer's crotch area without requiring any skill, and the wearer can exercise easily. Another object of the present invention is to provide a diaper 1 in which an absorbent pad is hard to slip from the wearer's crotch area.

FIG. 4 is a diagram showing grooves formed in the width direction of the diaper according to the embodiment. FIG. 4 is a diagram of the exterior surface of the diaper 1 viewed from the back region side. Hereinafter, the rear body region 1R of the diaper 1 will be explained as an example, but a similar configuration may be adopted in the front body region 1F. On the side of the rear body region 1R of the absorber 8 extending area of the diaper 1, the cover sheet 4 and the absorber 8, which are exterior bodies, are bent, and a plurality of grooves 8G, which are grooves extending in the width direction, are formed in parallel in the longitudinal direction. It is formed. In the groove 8G, the rubber thread 4R3 overlaps a part of the outer side of the absorbent body 8 in the width direction on the inner side in the width direction, and the biasing force of the rubber thread 4R3 is indirectly transmitted from both sides of the absorbent body 8 in the width direction. A plurality of them are formed in a virtual extension area on the inner side in the width direction of the thread rubber 4R3 of the body 8.

A plurality of grooves 8G are provided in the longitudinal direction with a width of 10 mm or more and 20 mm or less to form the groove extension portion 20. For a caregiver or the like, the groove 8G functions as a mark for arranging the absorbent pad in the diaper 1. When a caregiver or the like places the absorbent pad using the groove 8G as a mark, the absorbent pad can be properly attached to the wearer's crotch.

No other groove extending in the width direction is formed within a range of 30 mm or less on both sides of the groove extension portion 20 in the longitudinal direction. Therefore, the wearer and the helper can clearly identify the groove 8G and the area of the groove extension 20.

When viewed from the groove 8G side, a plurality of rubber threads 4R3 are provided on the outer side in the width direction of the groove extension portion 20. A plurality of thread rubbers 4R3 are present at the outer end of the absorber 8 in the width direction, spaced apart from each other by a width of 10 mm or more and 20 mm or less, forming a contractible member group, and a range of 30 mm or less in the longitudinal direction of the contractible member group. Inside, the absorbent body 8 has no other grooves extending in the width direction.

On the skin surface side of the groove 8G, a plurality of protrusions extending in the width direction are formed at positions corresponding to the groove 8G. In a state where the grooves 8G are formed on the non-skin side of the diaper 1, the bends formed in the absorber 8 by the grooves 8G appear as convex portions on the skin side of the diaper 1. When the absorbent pad is placed on the skin side of the diaper 1, the convex portion functions as a non-slip that brings the absorbent pad into close contact with the wearer's skin.

Note that the cover sheet 4 and inner cover sheets 5F and 5R are semitransparent. Therefore, the rubber threads 4F3 and 4R3, which are elastic members that extend to the outside in the width direction of the absorbent body 8 while imparting contractile force to the leg gathers 3LL and 3LR, can be applied from both the skin side and the non-skin side of the diaper 1. Visible. The wearer or the helper can also visually check the rubber threads 4F3 and 4R3 from the skin side and the non-skin side of the diaper 1 and place the absorbent pad in such a way that it fits in that position. A groove 8G is formed on the non-skin side of the absorbent body 8 and the cover sheet 4 corresponding to the widthwise inner side of the extension area of the thread rubber 4F3, 4R3, and a convex portion is formed on the skin side. There is. When the wearer or a caregiver visually recognizes the rubber threads 4F3 and 4R3 and places the absorbent pad so that it fits in that position, the absorbent pad will fit into the groove 8G formed on the non-skin side and the skin surface. Corresponds to the protrusion formed on the side. Therefore, the absorbent pad can properly perform its functions, and the period during which the diaper 1 can be worn can be extended.

FIG. 5 is a diagram schematically showing the diaper according to the embodiment in an unfolded and stretched state from the non-skin side. The rubber threads 4F3 and 4R3 extend to the outer end in the width direction of the absorbent body 8, and do not exist continuously in the extending region of the absorbent core 8c. In this embodiment, rubber thread fragments 4F3F, 4R3F exist in the virtual extension region of the rubber thread 4F3, 4R3 connected to the absorbent core 8c, and the fragments 4F3F, 4R3F of the thread rubber exist in the width direction. are placed intermittently. Such thread rubber fragments 4F3F, 4R3F are formed by forming the thread rubber 4F3, 4R3 so as to cross the absorbent core 8c in the width direction on the crotch region 1B side, and then forming a plurality of thread rubber fragments 4F3F, 4R3F corresponding to the extending region of the absorbent core 8c. It can be formed by cutting at a certain point.

The thread rubber fragments 4F3F and 4R3F remain even after the diaper 1 is completed. The rubber thread fragments 4F3F, 4R3F are not continuous with the rubber threads 4F3, 4R3, and the urging force applied to the absorbent body 8 is weaker than that of the rubber threads 4F3, 4R3. However, the thread rubber pieces 4F3F and 4R3F are still arranged intermittently in the width direction, and exert a weak biasing force on the arrangement range.

In this embodiment, the biasing force of the rubber threads 4F3 and 4R3 superimposed on a part of the width direction end portion of the absorbent body 8 is transmitted to the absorbent core 8c, so that the absorbent body 8 and the cover sheet 4 of the diaper 1 have a width A plurality of grooves 8G extending parallel to the direction are formed. In addition, the portion where the groove 8G overlaps with the absorbent core 8c also lies on an imaginary extension line connecting the inner ends of the thread rubber 4F3 and 4R3 in the width direction. Fragments 4F3F and 4R3F are arranged intermittently.

The rubber thread fragments 4F3F, 4R3F continue to apply a weak biasing force from the exterior body to the absorbent body 8 at the bottom portion of the groove 8G, so the diaper 1 according to the present embodiment has the biasing force of the rubber threads 4F3, 4R3. The groove 8G formed by the groove 8G can be reliably held.

As already mentioned, the absorbent core 8c is provided with the groove 8H, which is a groove extending in the longitudinal direction. Further, a groove 8G, which is a widthwise groove extending in the width direction, is provided on the non-skin side of the absorbent core 8c, and the groove 8H and the groove 8G are formed in the widthwise direction of the absorbent core 8c in the groove extension portion 20. They are orthogonal at the center. The wearer or the caregiver can place the absorbent pad in the diaper 1 with the groove 8G as the target, but the groove 8H provided in the center of the absorbent core 8c in the width direction allows the absorbent pad to be placed in the horizontal direction. can be aligned at appropriate positions.

Note that if the groove 8H provided in the absorbent core 8c is a compressed groove that is concave when viewed from the skin side, it can be used as a guide groove for flowing the drained liquid. By forming the slit grooves, the effect as the flow guide grooves can be further enhanced, and the grooves 8H can be easily identified even from the non-skin side of the diaper 1. This makes it easier to align the absorbent pad in the left-right direction.

In addition, the absorbent core 8c is provided with compressed grooves that are concave when viewed from the skin side, and compressed grooves that are concave when viewed from the non-skin side, so that the cross section of the absorbent core 8c is The shape can also be H-shaped. In this form, the grooves 8H function as flow guide grooves on the skin side of the diaper 1, and are also visible from the non-skin side. Therefore, it becomes easy to align the absorbent pad in the left-right direction.

FIG. 6 is a diagram schematically showing the diaper according to the embodiment in an unfolded and stretched state from the skin side. The groove 8H shown in FIG. 6 is a slit groove that penetrates the absorbent core 8c, and is configured so that the structure on the non-skin side can be seen through the groove 8H even when the diaper 1 is viewed from the skin side. There is. Since the thread rubber pieces 4F3F and 4R3F are intermittently arranged on the non-skin side of the absorbent core 8c, the thread rubber pieces 4F3F and 4R3F are intermittently arranged from the skin side of the diaper 1 through the groove 8H.
4R3F is visible. Furthermore, the grooves 8G formed in the cover sheet 4 by the thread rubber pieces 4F3F and 4R3F are also visible from the skin side of the diaper 1 through the grooves 8H.

When aligning the absorbent pad in the left-right direction, the pieces 4F3F and 4R3F of the rubber thread passing through the groove 8H function as a mark indicating the center portion of the diaper 1 in the width direction. Therefore, in addition to when the diaper 1 is viewed from the non-skin side, the absorbent pad can be easily aligned in the left-right direction when the diaper 1 is viewed from the skin side. When a caregiver or wearer places the absorbent pad on the diaper 1, when the diaper 1 is viewed from the non-skin side, the grooves 8G formed by the thread rubber pieces 4F3F and 4R3F and the absorbent core 8c are visible. The placement position of the absorbent pad in the longitudinal direction and the width direction can be determined by the groove 8H, which is perpendicular to the groove 8G in the widthwise central portion and is visible from the non-skin side.

When the diaper 1 is viewed from the skin side, the grooves 8H, which are slit grooves penetrating the absorbent core 8c, and the thread rubber pieces 4F3F and 4R3F, which are visible from the skin side through the grooves 8H, are visible. It is possible. Furthermore, when the diaper 1 is viewed from the skin side, the grooves 8G formed on the non-skin side by the thread rubber pieces 4F3F, 4R3F can also be visually recognized.

Further, in a state where the grooves 8G are formed on the non-skin side of the diaper 1, the bends formed in the absorber 8 by the grooves 8G appear as convex portions extending in the width direction on the skin side of the diaper 1. . The convex portion functions not only to prevent the absorbent pad from slipping, but also to serve as a mark when placing the absorbent pad on the diaper 1. Therefore, even when the diaper 1 is viewed from the skin side, the wearer or caregiver can see the multiple structures indicating the placement positions of the absorbent pads, and can place the absorbent pads in appropriate positions. It is.

As described above, the diaper 1 according to the present embodiment has a structure and marks for appropriately arranging the absorbent pad on the skin side, both when viewed from the skin side and when viewed from the non-skin side. have. Therefore, the wearer or the caregiver can appropriately determine the placement position of the absorbent pad.

(Modified example)
FIG. 7 is a diagram schematically showing a state in which the diaper according to the modified example is unfolded and stretched. In this modification, two parallel grooves 8HL and 8HR extending in the longitudinal direction of the absorbent core 8c are provided equidistantly on the left and right sides of the widthwise central portion of the absorbent core 8c. By providing the two grooves 8HL and 8HR, the diaper 1 can more easily function as a flow guiding groove. Furthermore, when considering the use of an absorbent pad in combination, alignment of the absorbent pad in the left-right direction becomes easier.

Although the embodiments of the features of the present invention have been described above, the content of the present invention is not limited to the above embodiments. For example, the longitudinal end sides of the groove 8H, or the grooves 8HL and 8HR when two grooves are provided, may be bent outward in the width direction. If the grooves 8HL and 8HR are bent, the discharge liquid that has flowed vigorously through the grooves 8HL and 8HR, which serve as flow guide grooves, will be decelerated at the bent portion and will be difficult to reach the longitudinal end of the absorbent core 8c. , can prevent back leakage and abdominal leakage. Further, since the grooves 8HL and 8HR are bent, the drained liquid can be absorbed over a wide range of the absorbent core 8c. When an absorbent pad is used in combination, the bent grooves 8HL and 8HR can be used for positioning in the left-right direction, as in the above embodiment.

The features included in each of the embodiments disclosed above can be combined.

1... Diaper 1B... Crotch area 1F... Front body area 1R... Back body area 3LL, 3LR... Leg gathers 3BL, 3BR... Three-dimensional gathers 4, 4F, 4R... Cover sheet 4B... Pad cover sheet 4F1 , 4F2, 4F3, 4R1, 4R2, 4R3... Rubber thread 4F3F, 4R3F... Rubber thread fragments 5F, 5R... Inner cover sheet 6... Back sheet 7... Core wrap sheet 8c... Absorption core 8... Absorber 8G, 8H, 8HL, 8HR...Groove 9...Top sheet 10L, 10R...Side sheet 11F, 11R...End sheet 20...Groove extension part

Claims (11)

A front body region facing the wearer's abdomen, a back body region facing the wearer's back, and a crotch region located between the front body region and the back body region and in which the absorbent body is arranged are connected. An absorbent article comprising:
a front exterior part forming an exterior surface on the non-skin side of the front body region;
a rear exterior part forming an exterior surface on the non-skin side of the rear body region;
including,
an exterior body forming a waist opening through which the wearer's torso is inserted, and a pair of leg openings through which the wearer's thighs are inserted;
The absorbent body is arranged astride the front exterior part and the rear exterior part, on the skin side of the exterior body, and is narrower than the front exterior part and the rear exterior part;
a contracting member that is adhered to the exterior body in a stretched state and contracts the edges of the pair of leg openings;
Prepare,
A convex portion extending in the width direction is formed on the skin side of the absorbent body by contraction of the contraction member,
The contraction member is visible from the skin side of the exterior body.
Absorbent articles. A front body region facing the wearer's abdomen, a back body region facing the wearer's back, and a crotch region located between the front body region and the back body region and in which the absorbent body is arranged are connected. An absorbent article comprising:
a front exterior part forming an exterior surface on the non-skin side of the front body region;
a rear exterior portion forming an exterior surface on the non-skin side of the rear body region;
including,
an exterior body forming a waist opening through which the wearer's torso is inserted, and a pair of leg openings through which the wearer's thighs are inserted;
The absorbent body is arranged astride the front exterior part and the rear exterior part, on the skin side of the exterior body, and is narrower than the front exterior part and the rear exterior part;
a contracting member that is adhered to the exterior body in a stretched state and contracts the edges of the pair of leg openings;
Prepare,
A groove extending in the width direction is formed on the non-skin side of the absorbent body and the exterior body by the contraction force of the contraction member,
The groove portion is visible from the non-skin side.
Absorbent articles. The contraction member is visible from the non-skin side,
A protrusion is formed on the skin side of the absorbent body corresponding to the groove.
The absorbent article according to claim 2. A plurality of the groove portions are spaced apart from each other in the longitudinal direction by a width of 10 mm or more and 20 mm or less to form a groove extension portion,
No other groove extending in the width direction is formed within a range of 30 mm or less in the longitudinal direction of the groove extension part.
The absorbent article according to claim 2. The contraction member is provided on the outer side in the width direction of the groove,
A plurality of the shrinkable members are spaced apart from each other by a width of 10 mm or more and 20 mm or less to form a shrinkable member group,
In the absorbent body, no other groove extending in the width direction is formed within a range of 30 mm in the longitudinal direction of the shrinkable member group.
The absorbent article according to claim 2. Fragments of the shrinkable member are arranged intermittently in the width direction on the non-skin side of the groove.
The absorbent article according to claim 2. A groove extending in the longitudinal direction is provided in at least one of the widthwise central portion of the absorbent body and both widthwise sides equidistant from the widthwise central portion;
The absorbent article according to claim 1 or 2. The groove extending in the longitudinal direction is a slit groove penetrating from the skin side to the non-skin side of the absorbent body, or a compressed groove with a concave side on the skin side.
The absorbent article according to claim 7. The groove extending in the longitudinal direction is a compressed groove having an H-shaped cross section in which the skin side is concave and the non-skin side is also concave.
The absorbent article according to claim 8. The absorbent body has a slit groove extending in the longitudinal direction in a central part in the width direction, penetrating from the skin side to the non-skin side of the absorbent body,
The fragment of the shrinkable member is visible from the skin side through the slit groove.
The absorbent article according to claim 6. The groove portion is visible from the skin side through the slit groove,
The absorbent article according to claim 10.

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