JP2024104035A - Absorbent articles - Google Patents

Abstract

To provide an absorbent article capable of suppressing the occurrence of slip and the occurrence of a rough dry skin.SOLUTION: An absorbent article 10 comprises: a liquid-permeable top sheet 11 on a skin side; a liquid-impermeable back sheet on a non-skin side; and an absorber 13 between the top sheet 11 and the back sheet, the absorbent article 10 being usable while being attached to clothing of a wearer. The absorbent article 10 comprises: a fixing material which is provided on the non-skin-side face of the absorbent article 10 and can be attached onto the skin-side face of the clothing; and an anti-slip sheet 15 having an air-permeable sheet-like substrate 17 fixed to a skin-side face 10b of the absorbent article 10 and a slip resistance material 18 made of silicone rubber which is provided on the skin-side face of the substrate 17 and has slip resistance with respect to the skin of the wearer. The anti-slip sheet 15 is provided in first areas 19 on both of the sides of the absorbent article 10 in a longitudinal direction and/or second areas 20 on both of the sides of the absorbent article 10 in a width direction, in the skin-side face 10b of the absorbent article 10.SELECTED DRAWING: Figure 1

Description

This disclosure relates to absorbent articles.

Some commercially available absorbent articles, such as pads for disposable pants, are equipped with fastening materials such as hook-and-loop fasteners or adhesives to prevent them from shifting or twisting during use.

For example, Patent Document 1 discloses an absorbent article that is constructed by sandwiching an absorbent body between a liquid-impermeable back sheet and a liquid-permeable top sheet. The liquid-impermeable back sheet of this absorbent article has a predetermined pattern of adhesive slip prevention means formed with a hot melt adhesive.

Patent Document 2 discloses an absorbent article in which an absorbent element is interposed between a bodily fluid-permeable top sheet and a bodily fluid-impermeable back sheet. On the use surfaces of the front and back ends of this absorbent article, adhesive sections made of hot melt adhesive or pressure-sensitive adhesive that has adhesive properties to human skin are exposed and formed.

JP 2003-10245 A Patent No. 4084009

Absorbent articles such as disposable pants pads are prone to shifting and wrinkling over time with use. When shifting or wrinkling occurs, the absorbent article cannot absorb body waste effectively and the waste ends up being received directly by the disposable pants, causing discomfort and requiring the disposable pants to be replaced, which can be economical.

In the absorbent article described in Patent Document 1, a slip-prevention means that can be attached to the paper pants or underwear used in combination is provided on the liquid-impermeable back sheet (back sheet), but if the paper pants or underwear shifts, the absorbent article will also shift.

In addition, the absorbent article described in Patent Document 2 has an adhesive part that adheres to the skin on the surface of the absorbent article that is used, but if the adhesive part continues to touch the skin, it can impede breathability and cause skin rashes and roughness.

Therefore, the present disclosure aims to provide an absorbent article that can prevent slippage and rough skin.

In order to solve the above problems, the first aspect of the present invention is an absorbent article that can be worn on a wearer's clothing and used, comprising a liquid-permeable top sheet that is positioned on the skin side when worn, a liquid-impermeable back sheet that is positioned on the non-skin side, and an absorbent body that is positioned between the top sheet and the back sheet, and the article is provided with a slip-prevention sheet having a fastening material that is provided on the non-skin side of the absorbent article and can be attached to the skin side of the clothing, a breathable sheet-like base material that is fixed to the skin side of the absorbent article, and a silicone rubber non-slip material that is provided on the skin side of the base material and can prevent slipping against the wearer's skin, and the slip-prevention sheet is provided on at least one of a first region on both sides of the longitudinal direction of the absorbent article and a second region on both sides of the width direction of the absorbent article on the skin side of the absorbent article.

The second aspect of the present invention is an absorbent article according to the first aspect, in which the skin side of the substrate of the slip prevention sheet is provided with a gap in which the anti-slip material is not disposed.

A third aspect of the present invention is an absorbent article according to the first or second aspect, in which the first region is a region located at both ends of the absorbent body in the longitudinal direction, and the second region is a region located outside the absorbent body in the width direction.

The fourth aspect of the present invention is an absorbent article according to the third aspect, in which the first region is an area located within a range of 20 mm to 60 mm from both ends of the absorbent body in the longitudinal direction, and the length in the width direction of the slip prevention sheet provided in the first region is 50% to 70% of the total length in the width direction of the absorbent article.

The fifth aspect of the present invention is an absorbent article according to the first or second aspect, in which the second region is a region provided on both sides of a center line in the longitudinal direction of the absorbent article, the distance from the center line to the slip prevention sheet of the second region on both sides in the longitudinal direction is 10% to 20% of the total length of the absorbent article in the longitudinal direction.

The sixth aspect of the present invention is an absorbent article according to the first or second aspect, in which the total area of the slip prevention sheets is 10% to 30% of the area of the skin side of the absorbent article.

The seventh aspect of the present invention is an absorbent article according to the second aspect, in which the area of the gap provided in the slip prevention sheet is 50% or more and 80% or less of the area of the slip prevention sheet.

The eighth aspect of the present invention is an absorbent article according to the second aspect, in which the anti-slip material of the anti-slip sheet is provided in parallel on the skin side of the base material in a plurality of strips, and the length of the anti-slip material is 50% or less of the length of the long side of the anti-slip sheet.

The ninth aspect of the present invention is an absorbent article according to the second aspect, in which the anti-slip material of the anti-slip sheet is provided in parallel on the skin side of the substrate in a plurality of strips, and the width of the anti-slip material is 30% or less of the length of the short side of the anti-slip sheet.

The tenth aspect of the present invention is an absorbent article according to the first or second aspect, in which the substrate of the slip prevention sheet is a breathable film or nonwoven fabric, and the basis weight of the substrate is 20 gsm or more and 32 gsm or less.

This disclosure makes it possible to prevent misalignment and skin irritation.

1 is a plan view of an absorbent article according to one embodiment of the present invention, viewed from the skin side. FIG. 2 is a plan view of the absorbent article of FIG. 1 from the non-skin side. FIG. 2 is a cross-sectional view taken along the line III-III in FIG. FIG. 2 is an enlarged explanatory diagram of a portion IV in FIG. 1 . FIG. 2 is an explanatory diagram showing the absorbent article when worn.

The following describes an absorbent article according to one embodiment of the present invention with reference to the drawings.

In the description of this specification, wearing an absorbent article means a state in which the absorbent article is worn on the body, regardless of whether the absorbent article is worn before, during, or after the absorption of bodily fluids. The "longitudinal direction" of each component of the absorbent article means the long direction of the absorbent article (the direction along the front and back of the wearer when worn), and is the direction along the arrow X in the figure. The "width direction" of each component of the absorbent article means the short direction perpendicular to the longitudinal direction (the direction along the left and right of the wearer when worn), and is the direction along the arrow Y in the figure. The "thickness direction" of each component of the absorbent article means the direction in which each component is stacked, and is the direction along the arrow Z in the figure. The "skin side" of each component of the absorbent article means the direction toward the wearer's body when the absorbent article is worn in the thickness direction, and the "non-skin side" means the direction opposite to the skin side in the thickness direction. Bodily fluids refer to liquids discharged from the body to the outside, such as urine, blood, and water in loose stool. Examples of absorbent articles include absorbent napkins, light incontinence pads, urine pads and other light incontinence products, sanitary napkins and other sanitary products, panty liners, etc., but are not limited to these and may be other absorbent articles.

Figure 1 is a plan view of an absorbent article according to one embodiment of the present invention, as viewed from the skin side. Figure 2 is a plan view of the absorbent article of Figure 1, as viewed from the non-skin side. Figure 3 is a cross-sectional view taken along the line III-III in Figure 1. Figure 4 is an explanatory diagram showing an enlargement of part IV in Figure 1. Figure 4 is an explanatory diagram showing an enlargement of part IV in Figure 1. Figure 5 is an explanatory diagram showing the absorbent article being worn. Note that each figure does not stipulate the size relationship between the components of the absorbent article, and the dimensions of each component can be appropriately selected from a wide range depending on the purpose of the absorbent article, etc.

[Absorbent articles]
As shown in Figures 1 to 3, an absorbent article 10 according to one embodiment of the present invention is a pad-type absorbent article 10 that can be worn on a wearer's underwear, disposable diaper, or other clothing A (see Figure 5). The absorbent article 10 includes a liquid-permeable top sheet 11 that is positioned on the skin side when worn, a liquid-impermeable back sheet 12 that is positioned on the non-skin side when worn, an absorbent body 13 that is disposed between the top sheet 11 and the back sheet 12, an adhesive layer (fastening material) 14 provided on the non-skin side (non-skin side surface) 10a of the absorbent article 10, and a slip-stop sheet 15 that is fixed to the skin side (skin side surface) 10b of the absorbent article 10. The absorbent article 10 of this embodiment also includes three-dimensional gathers 16 in addition to the top sheet 11, the back sheet 12, the absorbent body 13, the adhesive layer 14, and the slip-stop sheet 15. The absorbent article 10 may include other sheets (e.g., a cover sheet that encases the absorbent body 13) in addition to the top sheet 11, the back sheet 12, the slip prevention sheet 15, and the three-dimensional gathers 16. The shape of the absorbent article 10 is not particularly limited, but is preferably substantially rectangular or oval. The absorbent article 10 of the present embodiment has a substantially rectangular shape.

The longitudinal length (maximum length; the same applies below) L1 of the absorbent article 10 is preferably at least 140 mm and at most 300 mm. The widthwise length L2 of the absorbent article 10 is preferably at least 50 mm and at most 100 mm. By adjusting the dimensions of the absorbent article 10 to fall within the above ranges, a pad-type absorbent article 10 suitable for light incontinence products, sanitary products such as sanitary napkins, panty liners, etc. can be obtained.

(Top sheet)
The top sheet 11 is a liquid-permeable sheet-like substrate that quickly passes bodily fluids toward the absorbent body 13 and diffuses the bodily fluids in the surface direction of the absorbent body 13. The top sheet 11 is preferably a substrate that is soft to the touch and does not irritate the skin so that it may be in direct contact with the wearer's skin. Examples of substrates include nonwoven fabrics such as air-through nonwoven fabrics, thermal bond nonwoven fabrics, and spunbond nonwoven fabrics, open-type films such as open-type polyethylene films, foamed films such as polyethylene foams and urethane foams, and multilayer sheets formed by laminating two or more of these.

The surface of the top sheet 11 may be embossed or perforated to improve liquid permeability. Any known method may be used to perform the embossing or perforation without restriction. In addition, the top sheet 11 may contain lotions, antioxidants, anti-inflammatory ingredients, pH adjusters, antibacterial agents, moisturizers, etc. to reduce irritation to the skin.

(Back seat)
The back sheet 12 may be formed using a substrate having liquid impermeability so that the body fluid held by the absorbent 13 does not wet the wearer's clothing. Examples of the substrate include a resin film and a composite sheet that is a laminate of a resin film and a nonwoven fabric. The nonwoven fabric used in the composite sheet is not particularly limited in its manufacturing method, and examples thereof include single-layer nonwoven fabrics such as spunbond nonwoven fabrics and meltblown nonwoven fabrics, composite nonwoven fabrics such as spunbond nonwoven fabrics/meltblown nonwoven fabric laminates, and composite materials thereof. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and composite films of polyethylene and polypropylene. In addition, in order to prevent stuffiness during wearing, it is preferable that the back sheet 12 has breathability. In order to provide the back sheet 12 with breathability, for example, a filler may be blended into the resin film of the substrate, or the back sheet 12 may be embossed. As the filler, calcium carbonate can be used, and the method for blending the filler can be any known method without any restrictions.

(Absorber)
Examples of the absorbent body 13 include a fluff absorbent body containing absorbent fibers and superabsorbent polymer (hereinafter sometimes referred to as "SAP"), and an SAP sheet in which SAP particles are fixed between liquid absorbent sheets.

The absorbent fibers are not particularly limited as long as they are generally used in absorbent articles such as sanitary napkins, paper diapers, and urine pads, and examples thereof include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, hydrophilic nonwoven fabric, etc. Examples of fluff pulp include wood pulp (for example, bleached coniferous kraft pulp (N-BKP) such as southern pine or Douglas fir), synthetic fiber, resin fiber, non-wood pulp, etc. that have been defibrated into a cotton-like state. Examples of liquid absorbent sheets include sheets composed of one or more of the above absorbent fibers.

There are no particular limitations on the superabsorbent polymer as long as it can absorb body fluids and prevent backflow, and examples of such polymers include polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers, and saponified versions thereof. Among these, from the viewpoint of absorption per weight, polyacrylates are preferred, alkali metal polyacrylates are more preferred, and sodium polyacrylate is even more preferred. The superabsorbent polymers can be used alone or in combination of two or more.

In the absorbent body 13, the absorbent fibers and SAP may be in the form of a mixture of SAP particles in the absorbent fibers, or the SAP particles may be fixed between the absorbent fibers.

(Cover sheet)
A cover sheet (not shown) may be provided to encase the absorbent 13 in order to prevent leakage of SAP particles and stabilize the shape of the absorbent 13. The base material of the cover sheet may be any material having hydrophilic properties, such as tissue, absorbent paper, airlaid nonwoven fabric, spunbond nonwoven fabric, etc. Among these, spunbond nonwoven fabric is preferable. In addition, when a plurality of cover sheets are provided, the base materials of the plurality of cover sheets may be the same or different. In addition, an ADL layer may be provided between the top sheet 11 and the cover sheet to quickly capture and distribute body fluid from the cover sheet side to the absorbent 13 side.

(3D gathers)
Left and right three-dimensional gathers 16 for preventing lateral leakage of bodily fluids excreted by the wearer may be provided on the skin side 10b of the absorbent article 10. In this case, the three-dimensional gathers 16 are provided at both widthwise ends of the skin side 11a of the top sheet 11 so as to extend along the longitudinal direction of the absorbent article 10. The three-dimensional gathers 16 include a water-repellent and/or waterproof gathered sheet 16a and an elastic stretchable member 16b.

The gather sheet 16a is a water-repellent and/or waterproof (liquid-impermeable) sheet, and is made of, for example, a nonwoven fabric. As the nonwoven fabric, any water-repellent and/or waterproof nonwoven fabric made of hydrophobic fibers can be used without any particular limitation, and examples thereof include spunbond nonwoven fabric, meltblown nonwoven fabric, and composite nonwoven fabric (SMS nonwoven fabric) which is a laminate of spunbond nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric. The gather sheet 16a has, for example, one end (fixed end) in the width direction fixed near both ends in the width direction of the skin side surface of the back sheet 12, a middle part in the width direction fixed near both ends in the width direction of the skin side surface 11a of the top sheet 11, and the other end in the width direction being a free end having uprightness. Note that the fixing position of the gather sheet is not limited to this embodiment, and for example, one end (fixed end) in the width direction may be fixed near both ends in the width direction of the skin side surface 11a of the top sheet 11.

The elastic stretch member 16b is disposed along the longitudinal direction near the free end (other end) of the gathered sheet 16a, imparting standing ability to the free end and allowing the free end of the gathered sheet 16a and its neighboring area to be deformed to fit the wearer's body shape. The elastic stretch member 16b may be, for example, a thread-, string-, or band-shaped member made of natural rubber, synthetic rubber, polyurethane, or the like.

(Fastening material)
As shown in FIG. 2 and FIG. 3, the non-skin side 10a of the absorbent article 10 (the non-skin side 12a of the back sheet 12 in this embodiment) is provided with an adhesive layer (fastening material) 14 for attaching the absorbent article 10 to the skin side A1 of the clothing A (such as underwear or a disposable diaper). That is, the adhesive layer 14 is provided on the non-skin side 10a of the absorbent article 10 and can be attached to the skin side A1 of the clothing A. There is no particular limitation on the adhesive that forms the adhesive layer 14, and examples of the adhesive include hot melt adhesives such as polyacrylic acid ester, vinyl acetate-ethylene copolymer, vinyl acetate-acrylic copolymer, polymethyl methacrylate, polystyrene, styrene-acrylic copolymer, polyester resin, epoxy resin, butadiene-styrene copolymer, etc. These may be used alone or in a blend of two or more. The adhesive layer 14 can be formed by applying the above adhesive to the non-skin side 10a of the absorbent article 10. When the absorbent article 10 is used, the absorbent article 10 is attached to the skin side A1 of the garment A via the adhesive layer 14 (see FIG. 5). A removable sheet (such as release paper) may be attached to the adhesive layer 14 of the absorbent article 10 before use to protect the adhesive layer 14. Note that the fastening material is not limited to the adhesive layer 14 formed by applying an adhesive to the non-skin side 10a of the absorbent article 10, and may be, for example, a double-sided tape or a hook-and-loop fastener attached to the non-skin side 10a of the absorbent article 10 (such as the non-skin side 12a of the backsheet 12).

(Anti-slip sheet)
1, 3, and 4, a plurality of anti-slip sheets 15 are provided on the skin side 10b of the absorbent article 10 to prevent the absorbent article 10 from slipping against the wearer's skin (sometimes referred to as "body") B. Each of the plurality of anti-slip sheets 15 includes a breathable sheet-like substrate 17 fixed to the skin side 10b of the absorbent article 10, and an anti-slip material 18 made of silicone rubber provided on the skin side of the substrate 17 to prevent slipping against the wearer's skin B. The anti-slip sheets 15 are provided on the skin side 10b of the absorbent article 10 to prevent slipping against the wearer's skin B, and have a function of preventing the absorbent article 10 from slipping against the skin B.

(Base material)
The substrate 17 is a breathable sheet-like substrate, and is fixed to the skin side 10b of the absorbent article 10. For example, the substrate 17 is adhered and fixed to the skin side 10b of the absorbent article 10 by an adhesive such as a hot melt. The substrate 17 is preferably a breathable film or nonwoven fabric. From the viewpoint of preventing stuffiness and skin rash, for example, a PE-based porous film having a moisture permeability of 6000 (g/m ² ·24h) or more, or a plastic-based film having an equivalent breathability, etc. can be used as the film. For example, a spunbond nonwoven fabric, a meltblown nonwoven fabric, a composite nonwoven fabric (SMS nonwoven fabric) which is a spunbond nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric laminate, etc. can be used as the nonwoven fabric. The basis weight of the substrate 17 is preferably 20 gsm or more as a lower limit, and 32 gsm or less as an upper limit. If the basis weight of the substrate 17 is less than 20 gsm, it becomes too thin and it is difficult to ensure the fixation of the anti-slip material 18 described below. Also, if the basis weight of the substrate 17 is 32 gsm or more, the breathability deteriorates, which is not preferable from the viewpoint of preventing stuffiness and skin rash.

(Anti-slip material)
The non-slip material 18 is made of silicone rubber that is non-slip with respect to the skin B, and has a function of preventing the absorbent article 10 from slipping from the skin B. In other words, the non-slip material 18 does not need to have an adhesive strength sufficient to adhere (fasten) the absorbent article 10 to the skin B, but only needs to have an adhesive strength sufficient to prevent the absorbent article 10 from slipping from the skin B. Since the non-slip material 18 is made of silicone rubber, it has excellent gas permeability and water vapor permeability and is less likely to become stuffy.

The slip prevention sheet 15 is provided on at least one of the first regions 19 on both sides of the absorbent article 10 in the longitudinal direction of the absorbent article 10 and the second regions 20 on both sides of the absorbent article 10 in the width direction of the absorbent article 10 on the skin side 10b of the absorbent article 10. That is, at least two slip prevention sheets 15 are provided. In this embodiment, the slip prevention sheets 15 are provided in both the first region 19 and the second region 20. Specifically, the multiple slip prevention sheets 15 in this embodiment are a pair of front and rear slip prevention sheets 15a, 15b provided in the first region 19 and two pairs of left and right slip prevention sheets 15c to 15f provided in the second region 20 (see FIG. 1). It is preferable that the slip prevention sheets 15a, 15b provided in the first region 19 are longer in the width direction than in the longitudinal direction of the absorbent article 10. In addition, the slip prevention sheets 15c to 15f provided in the second region 20 are preferably longer in the longitudinal direction than in the width direction of the absorbent article 10. In this embodiment, the slip prevention sheet 15 is provided in both the first region 19 and the second region 20, but this is not limited to this, and it is sufficient that it is provided in at least one of the first region 19 and the second region 20. In this embodiment, the first region 19 is a part of the skin side surface 11a of the top sheet 11, and the second region 20 is a part of the skin side surface of the gathered sheet 16a, but this is not limited to this, and it is sufficient that the first region 19 and the second region 20 are a part of the skin side surface 10b of the absorbent article 10.

(First region)
The first regions 19 on both sides in the longitudinal direction of the absorbent article 10 are preferably regions that overlap both longitudinal ends of the absorbent body 13 when the absorbent article 10 is viewed from the skin side. That is, the first regions 19 on both sides in the longitudinal direction of the absorbent article 10 are preferably regions located at both longitudinal ends of the absorbent body 13. As a result, when the slip prevention sheet 15 is provided in the first region 19, the front and rear slip prevention sheets 15a, 15b are located at both longitudinal ends of the absorbent body 13 as shown in FIG. 1. In this way, by setting the first region 19 in the region located at both longitudinal ends of the absorbent body 13, slippage of the absorbent body 13 can be concentratedly suppressed rather than the entire absorbent article 10, so that excrement such as bodily fluids can be reliably received by the absorbent body 13.

In addition, when the first region 19 is a region located at both ends of the absorbent body 13 in the longitudinal direction, the first region 19 is preferably a region located within a range of 20 mm to 60 mm from both ends 13a of the absorbent body 13 in the longitudinal direction (center side). If the first region 19 is set at a position shorter than 20 mm from both ends 13a of the absorbent body 13 in the longitudinal direction, the operability of providing the anti-slip sheets 15a, 15b in the first region 19 may decrease, and the productivity of the absorbent article 10 may decrease accordingly. In addition, if the first region 19 is set at a position longer than 60 mm from both ends 13a of the absorbent body 13 in the longitudinal direction, the anti-slip sheets 15a, 15b of the first region 19 may be close to the center of the absorbent body 13 in the longitudinal direction, and the water absorption performance of the absorbent body 13 may decrease. That is, by making the first region 19 a region within a range of 20 mm to 60 mm from both ends 13a in the longitudinal direction of the absorbent body 13, it is possible to suppress the decrease in operability and productivity when providing the anti-slip sheets 15a, 15b in the first region 19, and to ensure the water absorption performance of the absorbent body 13.

When the slip prevention sheet 15 is provided in the first region 19, the widthwise length L3 of the slip prevention sheets 15a, 15b is preferably 50% or more, and preferably 70% or less, of the total widthwise length L2 of the absorbent article 10. By setting the widthwise length L3 of the slip prevention sheets 15a, 15b to 50% or more of the total widthwise length L2 of the absorbent article 10, the slip prevention effect can be exerted. In addition, by setting the widthwise length L3 of the slip prevention sheets 15a, 15b to 70% or less of the total widthwise length L2 of the absorbent article 10, the productivity of the absorbent article 10 can be prevented from decreasing, and good productivity can be maintained.

(Second Area)
The second regions 20 on both sides in the width direction of the absorbent article 10 are preferably regions located on the outer side in the width direction than the absorbent body 13. As a result, when the slip prevention sheet 15 is provided in the second region 20, the left and right slip prevention sheets 15 are located on the outer side in the width direction than the absorbent body 13. In this way, by setting the second regions 20 on both sides in the width direction of the absorbent article 10 on the outer side in the width direction than the absorbent body 13, it is possible to prevent a decrease in the absorption capacity of the absorbent body 13 caused by the slip prevention sheet 15 provided in the second region 20. Note that the second region 20 of the absorbent article 10 is not limited to a region located on the outer side in the width direction than the absorbent body 13, and may be, for example, a region overlapping the absorbent body 13.

In addition, it is preferable that the second regions 20 on both sides in the width direction of the absorbent article 10 are provided spaced apart from each other on both sides of the center line CL (shown by the dashed line CL in Figure 1) in the longitudinal direction of the absorbent article 10. As a result, when the anti-slip sheet 15 is provided in the second region 20, two pairs of anti-slip sheets 15c to 15f are provided on the left and right sides, as shown in Figure 1. In this case, the distance L4 from the center line CL to the anti-slip sheets 15c to 15f of the second regions 20 on both sides in the longitudinal direction is preferably 10% or more and preferably 20% or less of the total length L1 in the longitudinal direction of the absorbent article 10. In this way, by separating the slip prevention sheets 15c to 15f from the center line CL by 10% or more of the total length L1 in the longitudinal direction of the absorbent article 10, it is possible to ensure that the area in the longitudinal center portion including the center line CL where the slip prevention sheet 15 is not provided is 20% or more of the total length L1 in the longitudinal direction of the absorbent article 10. This makes it easier to stand up the three-dimensional gathers 16 in the longitudinal center portion of the absorbent article 10 when the absorbent article 10 receives bodily fluids or other excrement, so that the three-dimensional gathers 16 can function effectively. In addition, by separating the slip prevention sheets 15c to 15f from the center line CL by 20% or less of the total length L1 in the longitudinal direction of the absorbent article 10, it is possible to ensure that the area in the longitudinal center portion of the absorbent article 10 where the anti-slip material 18 is not provided is 40% or less of the total length L1 in the longitudinal direction of the absorbent article 10. This makes it possible to prevent a decrease in the slip prevention effect of the absorbent article 10 located at the crotch area of the wearer when worn. Note that the second region 20 of the absorbent article 10 is not limited to two pairs of regions on both sides in the width direction of the absorbent article 10, but may be one pair of regions on both sides in the width direction, or three or more pairs of regions on both sides in the width direction.

(Gap)
It is preferable to provide a gap 21 where the anti-slip material 18 is not arranged on the skin side of the substrate 17 of the slip-prevention sheet 15. The area of the gap 21 provided on the skin side of the substrate 17 of the slip-prevention sheet 15 is preferably 50% or more, and preferably 80% or less, of the area of the slip-prevention sheet 15 (the area of the skin side of the substrate 17). In addition, the lower limit of the area of the gap 21 is more preferably 60% or more of the area of the slip-prevention sheet 15, and the upper limit of the area of the gap 21 is more preferably 70% or less of the area of the slip-prevention sheet 15. If the area of the gap 21 is smaller than 50% of the area of the slip-prevention sheet 15, the adhesion between the absorbent article 10 and the skin becomes too high, increasing the possibility of stuffiness and skin rash. In addition, if the area of the gap 21 is larger than 80% of the area of the slip-prevention sheet 15, there is a possibility that the slip-prevention effect cannot be fully exerted. In other words, by setting the area of the gaps 21 provided in the anti-slip sheet 15 to be greater than or equal to 50% and less than or equal to 80% of the area of the anti-slip sheet 15, it is possible to suppress stuffiness and skin irritation while also achieving a sufficient anti-slip effect.

The shape of the anti-slip material 18 provided on the skin side of the substrate 17 of the anti-slip sheet 15 is not particularly limited, and for example, multiple anti-slip materials 18 in wavy, dashed, straight, dotted, or other shapes may be provided in a manner that provides gaps 21 on the skin side of the substrate 17.

For example, as shown in FIG. 1 and FIG. 4, multiple straight anti-slip materials 18 may be provided in parallel on the skin side of the substrate 17. That is, multiple anti-slip materials 18 may be provided in parallel on the skin side of the substrate 17. In this embodiment, multiple anti-slip materials 18 provided on the anti-slip sheets 15a, 15b in the first region 19 are provided in parallel in the width direction (Y direction) from one end to the other end of the longitudinal direction (X direction) of the anti-slip sheets 15a, 15b, with an inclination relative to the longitudinal direction. In addition, multiple anti-slip materials 18 provided on the anti-slip sheets 15c to 15f in the second region 20 are provided in parallel in the longitudinal direction (X direction) from one end to the other end of the width direction (Y direction) of the anti-slip sheets 15c to 15f, with an inclination relative to the width direction. The slip prevention sheets 15a and 15b in the first region 19 are elongated in the width direction of the absorbent article 10, and the slip prevention sheets 15c to 15f in the second region 20 are elongated in the longitudinal direction of the absorbent article 10.

In this case, the length L5 of the anti-slip material 18 is preferably 50% or less of the length L6 of the long side of the slip-prevention sheet 15. If the length L5 of the anti-slip material 18 is longer than 50% of the length L6 of the long side of the slip-prevention sheet 15, the absorbent article 10 may adhere too closely to the skin, causing stuffiness or skin irritation. In other words, by setting the length L5 of the anti-slip material 18 to 50% or less of the length L6 of the long side of the slip-prevention sheet 15, stuffiness and skin irritation can be suppressed. In addition, the long side direction of the slip-prevention sheet 15 is the width direction (Y direction) of the absorbent article 10 in the case of the slip-prevention sheets 15a and 15b provided in the first region 19, and is the length direction (X direction) of the absorbent article 10 in the case of the slip-prevention sheets 15c to 15f provided in the second region 20 (see FIG. 1).

The width L7 of the anti-slip material 18 is preferably 30% or less of the length L8 of the short side of the slip-prevention sheet 15. If the width L7 of the anti-slip material 18 is longer than 30% of the length L8 of the short side of the slip-prevention sheet 15, the absorbent article 10 may adhere too closely to the skin, causing stuffiness or skin rash. In other words, by setting the width L7 of the anti-slip material 18 to 30% or less of the length L8 of the short side of the slip-prevention sheet 15, stuffiness and skin rash can be suppressed. In addition, the short side direction of the slip-prevention sheet 15 is the longitudinal direction (X direction) of the absorbent article 10 in the case of the slip-prevention sheets 15a and 15b provided in the first region 19, and is the width direction (Y direction) of the absorbent article 10 in the case of the slip-prevention sheets 15c to 15f provided in the second region 20.

The total area of the anti-slip sheets 15 (in this embodiment, the total area of the anti-slip sheets 15a to 15f) is preferably 10% or more and 30% or less of the area of the skin side 10b of the absorbent article 10. By setting the total area of the anti-slip sheets 15 within the above range, it is possible to prevent damage to the skin caused by the anti-slip sheets 15 while still achieving the anti-slip effect.

(how to use)
Next, an example of a method of using the absorbent article 10 will be described. Fig. 5 is an explanatory diagram showing the absorbent article being worn. Fig. 5 is a schematic cross-sectional view of the absorbent article being worn from the side. Fig. 5 also shows a schematic illustration of clothing A (underwear, disposable diaper, etc.) and a wearer's body B, with the lower curved portion of the body B being the crotch area, and the legs of the wearer not shown.

As shown in FIG. 5, when using the absorbent article 10, the user attaches the adhesive layer (fastening material) 14 of the non-skin side 10a of the absorbent article 10 (in this embodiment, the non-skin side 12a of the back sheet 12) to the skin side A1 of the garment A. When the user wears the garment A with the absorbent article 10 attached, the anti-slip material 18 of the anti-slip sheet 15 on the skin side 10b of the absorbent article 10 comes into contact with the wearer's skin B. The anti-slip material 18 of the anti-slip sheet 15 abutting against the wearer's skin B has an anti-slip effect on the absorbent article 10 against the wearer's skin B.

The absorbent article 10 configured as described above has an adhesive layer (adhesive material) 14 on the non-skin side 10a of the absorbent article 10 that can be attached to the skin side A1 of the clothing A, so that the absorbent article 10 can be attached to the clothing A when it is used. In addition, the skin side 10b of the absorbent article 10 has a slip-prevention sheet 15 having a slip-prevention material 18 that can prevent slipping against the wearer's skin B, so that when the clothing A with the absorbent article 10 attached is worn, the slip-prevention material 18 of the slip-prevention sheet 15 on the skin side 10b of the absorbent article 10 comes into contact with the wearer's skin B. The slip-prevention material 18 has an anti-slip effect on the absorbent article 10 against the wearer's skin B, so that, for example, when the clothing A slips during long-term use, the absorbent article 10 can be prevented from slipping against the wearer's skin B.

The anti-slip sheet 15 is provided on at least one of the first regions 19 on both longitudinal sides of the skin side 10b of the absorbent article 10 and the second regions 20 on both width sides. In other words, the anti-slip sheet 15 can be provided symmetrically in the longitudinal or width directions on the skin side 10b of the absorbent article 10, so that slippage of the absorbent article 10 against the wearer's skin B can be stably prevented.

In addition, the base material 17 of the slip prevention sheet 15 is breathable, which helps prevent stuffiness and skin rashes.

In addition, the anti-slip material 18 of the anti-slip sheet 15 is made of silicone rubber, and therefore has excellent gas and water vapor permeability, ensuring breathability and preventing stuffiness and skin rashes. In addition, since the absorbent article 10 is prevented from slipping relative to the skin B and is not adhered (attached) to the skin B, the anti-slip sheet 15 may come into contact with the skin B or move away from the skin B depending on the wearer's movements and posture. In this way, a gap may be created between the skin B and the anti-slip sheet 15 depending on the wearer's movements and posture, ensuring breathability and preventing stuffiness and skin rashes.

Therefore, this embodiment can prevent the absorbent article 10 from shifting and causing rough skin.

In addition, by providing gaps 21 on the skin side of the base material 17 of the anti-slip sheet 15 where no anti-slip material 18 is placed, the breathability of the anti-slip sheet 15 can be further improved, preventing stuffiness and skin rashes, and preventing the occurrence of rough skin.

The manner (including shape and dimensions) of providing the anti-slip material 18 on the skin side of the substrate 17 of the anti-slip sheet 15 is not limited to the above. For example, in this embodiment, the skin side of the substrate 17 of the anti-slip sheet 15 is provided with a gap 21 where the anti-slip material 18 is not arranged, but the anti-slip material 18 may be provided on the entire skin side of the substrate 17 without providing the gap 21. Even in this case, the substrate 17 has breathability, so breathability can be ensured and stuffiness and skin rash can be suppressed. In addition, since the anti-slip material 18 is made of silicone rubber, it has excellent gas permeability and water vapor permeability, and can ensure breathability and suppress stuffiness and skin rash. In addition, as described above, depending on the movement and posture of the wearer, a gap is generated between the skin B and the anti-slip sheet 15, so breathability can be ensured and stuffiness and skin rash can be suppressed.

The present invention has been described above based on the above embodiment, but the present invention is not limited to the contents of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention.

10: Absorbent article 10a: Non-skin side of absorbent article 10b: Skin side of absorbent article 11: Top sheet 12: Back sheet 13: Absorbent body 14: Adhesive layer (fastening material)
15: Anti-slip sheet 17: Base material 18: Anti-slip material 19: First region 20: Second region 21: Gap A: Garment A1: Skin side of garment B: Wearer's skin

Claims (10)

An absorbent article that can be worn on a wearer's clothes and used, comprising a liquid-permeable top sheet positioned on the skin side when worn, a liquid-impermeable back sheet positioned on the non-skin side, and an absorbent body disposed between the top sheet and the back sheet,
a fastening material provided on a non-skin side of the absorbent article and attachable to a skin side of the clothing;
a slip-prevention sheet including a breathable sheet-like substrate fixed to the skin side of the absorbent article, and a non-slip material made of silicone rubber provided on the skin side of the substrate and capable of preventing slipping against the skin of a wearer;
The anti-slip sheet is provided on at least one of a first region on both sides of the absorbent article in the longitudinal direction and a second region on both sides of the absorbent article in the width direction on the skin side of the absorbent article. The absorbent article according to claim 1 , wherein a gap is provided on the skin side of the substrate of the anti-slip sheet, where the anti-slip material is not disposed. The first region is a region located at both ends of the absorbent body in the longitudinal direction,
The absorbent article according to claim 1 or 2, wherein the second region is a region located outside the absorbent body in the width direction. The first region is a region located within a range of 20 mm to 60 mm from both ends of the absorbent body in the longitudinal direction,
The absorbent article according to claim 3, wherein the length in the width direction of the anti-slip sheet provided in the first region is 50% or more and 70% or less of the entire length in the width direction of the absorbent article. The second region is a region provided on both sides of a center line in the longitudinal direction of the absorbent article, the region being spaced apart from the center line,
The absorbent article according to claim 1 or claim 2, characterized in that the distance from the center line to the anti-slip sheets in the second regions on both sides of the longitudinal direction is greater than or equal to 10% and less than or equal to 20% of the total length of the absorbent article in the longitudinal direction. 3. The absorbent article according to claim 1, wherein a total area of the anti-slip sheets is 10% or more and 30% or less of an area of the skin side of the absorbent article. 3. The absorbent article according to claim 2, wherein an area of the gap provided in the anti-slip sheet is 50% or more and 80% or less of an area of the anti-slip sheet. The anti-slip material of the anti-slip sheet is provided in parallel on the skin side of the base material,
3. The absorbent article according to claim 2, wherein the length of the anti-slip material is 50% or less of the length of the anti-slip sheet in the long side direction. The anti-slip material of the anti-slip sheet is provided in parallel on the skin side of the base material,
3. The absorbent article according to claim 2, wherein the width of the anti-slip material is 30% or less of the length of the anti-slip sheet in the short side direction. The base material of the anti-slip sheet is a breathable film or nonwoven fabric,
The absorbent article according to claim 1 or 2, wherein the basis weight of the substrate is 20 gsm or more and 32 gsm or less.