Absorbent articles

Abstract

To suppress the generation of displacement of an absorbent article, and the generation of skin roughness.SOLUTION: The present disclosure is an absorbent article 10 which comprises a liquid permeable top sheet 11, a liquid impermeable back sheet, and an absorber 13, and can be used by being attached to a garment of a wearer comprises: a fixing material disposed on a non-skin side surface of the absorbent article 10, and capable of being stuck to the skin side surface of the garment; and an anti-slip material 15 disposed on a skin side surface 10b of the absorbent article 10, and permitting anti-slippage to the skin of the wearer. The anti-slip material 15 is disposed in at least one of first regions 17 on both sides in the longitudinal direction of the absorbent article 10, and second regions 18 on both sides in the width direction of the absorbent article 10 in the skin side surface 10b of the absorbent article 10. A cavity 20 in which the anti-slip material 15 is not arranged is disposed in an anti-slip region 19 in which the anti-slip material 15 is surrounded by virtual straight lines VL1-VL4 contacting the outer end of the anti-slip material 15 from both sides in the longitudinal direction and the width direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to absorbent articles.

Background Art

[0002] Some commercially available absorbent articles such as pads for paper pants are provided with fixing materials such as surface fasteners and adhesives in order to prevent displacement and sagging during use.

[0003] For example, Patent Document 1 discloses an absorbent article configured by interposing an absorber between a liquid-impermeable back sheet and a liquid-permeable front sheet. On the liquid-impermeable back sheet of this absorbent article, an adhesive displacement-preventing means of a predetermined pattern is formed by a hot melt adhesive.

[0004] Further, Patent Document 2 discloses an absorbent article in which an absorption element is interposed between a body fluid-permeable front sheet and a body fluid-impermeable back sheet. On the use surfaces at the front and rear ends of this absorbent article, an adhesive portion made of a hot melt adhesive or a pressure-sensitive adhesive having adhesiveness to the human skin is exposed and formed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In absorbent articles such as pads for paper pants, displacement and sagging are likely to occur with long-term use. If displacement and sagging occur, the absorbent article cannot absorb excrement well, and the excrement is directly received by the paper pants, causing discomfort and also requiring replacement of the paper pants, which may deteriorate the economy.

[0007] In the absorbent article described in Patent Document 1, a means to prevent slippage that can be adhered to the disposable pants or underwear used in combination is provided on the liquid-impermeable back sheet (back sheet). However, if the disposable pants or underwear shift, the absorbent article will also shift with them.

[0008] Furthermore, in the absorbent article described in Patent Document 2, an adhesive portion that adheres to the skin is provided on the surface of the absorbent article for use. However, if the adhesive portion continues to come into contact with the skin, breathability may be hindered, potentially causing skin irritation and roughness.

[0009] Therefore, this disclosure aims to provide an absorbent article that can suppress the occurrence of shifting and skin irritation. [Means for solving the problem]

[0010] To solve the above problems, a first aspect of the present invention provides an absorbent article that can be attached to the wearer's clothing and is usable, comprising a liquid-permeable top sheet located on the skin side when attached, a liquid-impermeable back sheet located on the non-skin side, and an absorbent disposed between the top sheet and the back sheet, wherein the absorbent article comprises a fastening material provided on the non-skin side of the absorbent article and attachable to the skin side of the clothing, and an anti-slip material provided on the skin side of the absorbent article to prevent slipping against the wearer's skin, wherein the anti-slip material is provided on at least one of the first regions on both sides in the longitudinal direction of the absorbent article and the second regions on both sides in the width direction of the absorbent article, and a gap is provided in the anti-slip region, which is the region enclosed by imaginary straight lines that are in contact with the outer end of the anti-slip material from both sides in the longitudinal and width directions, in which the anti-slip material is not disposed.

[0011] A second aspect of the present invention is an absorbent article according to the first aspect, wherein the first region is located at both ends of the absorbent body in the longitudinal direction, and the second region is located outside the absorbent body in the width direction.

[0012] A third aspect of the present invention is an absorbent article according to the second aspect, wherein the first region is located within a range of 20 mm to 60 mm from both ends of the longitudinal direction of the absorbent, and the length in the width direction of the anti-slip region of the first region is 50% to 70% of the total length in the width direction of the absorbent article.

[0013] A fourth aspect of the present invention is an absorbent article according to the first or second aspect, wherein the second region is provided spaced apart on both sides of the longitudinal center line of the absorbent article, and the distance from the center line to the anti-slip region of the second region on both sides in the longitudinal direction is 10% or more and 20% or less of the total length of the absorbent article in the longitudinal direction.

[0014] A fifth aspect of the present invention is an absorbent article according to the first or second aspect, wherein the total area of ​​the anti-slip regions is 10% or more and 30% or less of the area of ​​the skin-facing surface of the absorbent article.

[0015] A sixth aspect of the present invention is an absorbent article according to the first or second aspect, wherein the area of ​​the void provided in the anti-slip region is 50% or more and 80% or less of the area of ​​the anti-slip region.

[0016] A seventh aspect of the present invention is an absorbent article according to the first or second aspect, wherein a plurality of anti-slip materials are provided in parallel within the anti-slip area, and the distance between the plurality of anti-slip materials is equal to or greater than the width of the anti-slip material.

[0017] An eighth aspect of the present invention is an absorbent article according to the first or second aspect, wherein a plurality of anti-slip materials are provided in parallel within the anti-slip area, and the length of the anti-slip materials is 50% or less of the length in the long side direction of the anti-slip area.

[0018] A ninth aspect of the present invention is the absorbent article according to the first aspect or the second aspect, wherein a plurality of anti-slip materials are provided in parallel within the anti-slip region, and the width of the anti-slip material is 30% or less of the length of the short side direction of the anti-slip region.

[0019] A tenth aspect of the present invention is the absorbent article according to the first aspect or the second aspect, wherein the anti-slip material is silicone rubber.

Advantages of the Invention

[0020] According to the present disclosure, the occurrence of displacement and skin roughness can be suppressed.

Brief Description of the Drawings

[0021] [Figure 1] It is a plan view from the skin side of an absorbent article according to an embodiment of the present invention. [Figure 2] It is a plan view from the non-skin side of the absorbent article of FIG. 1. [Figure 3] It is a cross-sectional view taken along the arrow III-III of FIG. 1. [Figure 4] It is an explanatory view enlarging the IV part of FIG. 1. [Figure 5] It is an explanatory view showing a state in which the absorbent article is worn.

Modes for Carrying Out the Invention

[0022] Hereinafter, an absorbent article according to an embodiment of the present invention will be described with reference to the drawings.

[0023] In this specification, wearing an absorbent article means the state of wearing the absorbent article on the body, regardless of whether it is before, during, or after the absorption of bodily fluids. The "longitudinal direction" of each component of the absorbent article means the direction of the longer side of the absorbent article (the direction that follows the front and back of the wearer when worn), and is the direction along arrow X in the figure. The "width direction" of each component of the absorbent article means the direction of the shorter side perpendicular to the longitudinal direction (the direction that follows the left and right sides of the wearer when worn), and is the direction along 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 arrow Z in the figure. The "skin side" of each component of the absorbent article means the direction of the thickness direction that faces the wearer's body when the absorbent article is worn, and the "non-skin side" means the direction of the thickness direction opposite to the skin side. Bodily fluids refer to liquids that are expelled from the body to the outside, such as urine, blood, and water in loose stools. Examples of absorbent articles include, but are not limited to, absorbent napkins, light incontinence pads, urine absorption pads and other light incontinence products, sanitary napkins and other sanitary products, and panty liners.

[0024] Figure 1 is a plan view of an absorbent article from the skin side according to one embodiment of the present invention. Figure 2 is a plan view of the absorbent article of Figure 1 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 enlarged explanatory diagram of part IV in Figure 1. Figure 4 is an enlarged explanatory diagram of part IV in Figure 1. Figure 5 is an explanatory diagram showing the absorbent article in a fitted state. Note that each figure does not specify the relative sizes of the components of the absorbent article, and the dimensions of each component can be appropriately selected from a wide range depending on the application of the absorbent article.

[0025] [Absorbent articles] As shown in Figures 1 to 3, the absorbent article 10 according to one embodiment of the present invention is a pad-type absorbent article 10 that can be attached to the wearer's clothing A (see Figure 5), such as underwear or a disposable diaper. The absorbent article 10 comprises a liquid-permeable top sheet 11 that is located on the skin side when attached, a liquid-impermeable back sheet 12 that is located on the non-skin side when attached, an absorbent body 13 placed between the top sheet 11 and the back sheet 12, an adhesive layer (fastening material) 14 provided on the non-skin side (non-skin surface) 10a of the absorbent article 10, and an anti-slip material 15 provided on the skin side (skin surface) 10b of the absorbent article 10. In addition to the top sheet 11, back sheet 12, absorbent body 13, adhesive layer 14, and anti-slip material 15, the absorbent article 10 of this embodiment also comprises a three-dimensional gather 16. The absorbent article 10 may also include other sheets besides the top sheet 11, back sheet 12, and three-dimensional gathers 16 (for example, a cover sheet that encloses the absorbent body 13). Furthermore, the shape of the absorbent article 10 is not particularly limited, but it is preferably roughly rectangular or oval. In this embodiment, the absorbent article 10 is roughly rectangular.

[0026] The longitudinal length (maximum length; the same applies hereinafter) L1 of the absorbent article 10 is preferably 140 mm or more at the lower limit and 300 mm or less at the upper limit. The widthwise length L2 of the absorbent article 10 is preferably 50 mm or more at the lower limit and 100 mm or less at the upper limit. By adjusting the dimensions of the absorbent article 10 to the above range, a pad-type absorbent article 10 suitable for light incontinence products, sanitary napkins and other sanitary products, panty liners, etc. can be obtained.

[0027] (Top sheet) The top sheet 11 is a liquid-permeable sheet-like substrate that allows bodily fluids to pass rapidly towards the absorbent 13 and diffuse them in the planar direction of the absorbent 13. The top sheet 11 is preferably made of a soft, non-irritating substrate so that it can come into direct contact with the wearer's skin. Examples of substrates include nonwoven fabrics such as air-through nonwoven fabric, thermal bond nonwoven fabric, and spunbond nonwoven fabric; open films such as open polyethylene film; foamed films such as polyethylene foam and urethane foam; and multilayer sheets made by laminating two or more of these.

[0028] The top sheet 11 may be embossed or perforated on its surface to improve liquid permeability. Known methods can be used without limitation for these embossing and perforating processes. Furthermore, to reduce skin irritation, the top sheet 11 may contain lotions, antioxidants, anti-inflammatory components, pH adjusters, antibacterial agents, moisturizers, etc.

[0029] (Back seat) The backsheet 12 should be formed using a base material that is impermeable to liquids so that the bodily fluids held by the absorbent 13 do not wet the wearer's clothing. Examples of the base material include a resin film, a composite sheet which is a laminate of a resin film and a nonwoven fabric, etc. The nonwoven fabric used in the composite sheet is not particularly limited in its manufacturing method and examples include single-layer nonwoven fabrics such as spunbond nonwoven fabric and meltblown nonwoven fabric, composite nonwoven fabrics such as spunbond nonwoven fabric / meltblown nonwoven fabric laminate, spunbond nonwoven fabric / meltblown nonwoven fabric / spunbond nonwoven fabric laminate, and composite materials thereof. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and composite films of polyethylene and polypropylene. Furthermore, in order to prevent stuffiness when worn, it is preferable that the backsheet 12 be breathable. To make the backsheet 12 breathable, for example, fillers can be blended into the resin film base material, or the backsheet 12 can be embossed. Calcium carbonate can be used as a filler, and its formulation can be carried out without restriction using any known method.

[0030] (Absorbent) Examples of the absorbent material 13 include a fluff absorbent material containing absorbent fibers and a superabsorbent polymer (hereinafter sometimes referred to as "SAP"), and an SAP sheet in which SAP particles are fixed between liquid absorbent sheets.

[0031] Absorbent fibers are generally not limited to those used in absorbent articles such as sanitary napkins, disposable diapers, and incontinence pads. Examples include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, and hydrophilic nonwoven fabrics. Examples of fluff pulp include wood pulp (for example, bleached kraft pulp from coniferous trees such as Southern pine and Douglas fir (N-BKP)), synthetic fibers, resin fibers, and non-wood pulp that have been defibrated into a cotton-like form. Examples of liquid absorbent sheets include sheets composed of one or more of the above absorbent fibers.

[0032] There are no particular limitations on the superabsorbent polymer as long as it can absorb bodily fluids and prevent backflow. Examples include polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers, and their saponifies. Among these, polyacrylates are preferred from the viewpoint of absorption per unit weight, alkali metal polyacrylates are more preferred, and sodium polyacrylate is even more preferred. The superabsorbent polymer can be used alone or in combination of two or more.

[0033] In the absorbent body 13, the form of the absorbent fibers and SAP may be one in which SAP particles are mixed into absorbent fibers, or in which SAP particles are fixed between absorbent fibers.

[0034] (Cover sheet) A cover sheet (not shown) may be provided to enclose the absorbent 13 in order to prevent leakage of SAP particles and to stabilize the shape of the absorbent 13. The base material of the cover sheet can be any hydrophilic material, such as tissue, absorbent paper, airlaid nonwoven fabric, or spunbond nonwoven fabric. Among these, spunbond nonwoven fabric is preferred. If multiple cover sheets are provided, the base materials of the multiple 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 bodily fluids from the cover sheet side to the absorbent 13 side.

[0035] (Three-dimensional gathers) The absorbent article 10 may be provided with left and right three-dimensional gathers 16 on the skin-facing side 10b to prevent leakage of bodily fluids excreted by the wearer. In this case, the three-dimensional gathers 16 are provided at both ends in the width direction of the skin-facing side 11a of the top sheet 11, extending along the longitudinal direction of the absorbent article 10. The three-dimensional gathers 16 include a water-repellent and / or waterproof gather sheet 16a and an elastic stretchable member 16b.

[0036] The gathered sheet 16a is a sheet having water-repellent and / or waterproof (liquid impermeable) properties, and is made of, for example, a nonwoven fabric. The nonwoven fabric can be any water-repellent and / or waterproof nonwoven fabric formed from hydrophobic fibers, without any particular limitations. Examples 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. For example, one end (fixed end) of the gathered sheet 16a in the width direction is fixed near both ends in the width direction of the skin side surface of the back sheet 12, the middle part in the width direction is 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 is a free end that can stand upright. Note that the fixing position of the gathered sheet is not limited to this embodiment; 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.

[0037] The elastic stretch member 16b is arranged along the longitudinal direction near the free end (other end) of the gathered sheet 16a, providing the free end with uprightness and allowing the free end of the gathered sheet 16a and its vicinity to deform to conform to the wearer's body shape. As the elastic stretch member 16b, thread-like, string-like, or strip-like materials made of natural rubber, synthetic rubber, polyurethane, etc., can be used as appropriate.

[0038] (Fixing material) As shown in Figures 2 and 3, the non-skin side 10a of the absorbent article 10 (the non-skin side 12a of the backsheet 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 clothing A (underwear, disposable diapers, etc.). 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 clothing A. There are no particular limitations on the adhesive used to form the adhesive layer 14, but examples 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, and butadiene-styrene copolymer. These may be used individually or in a blend of several. 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, it is attached to the skin-facing side A1 of the garment A via the adhesive layer 14 (see Figure 5). Before use, a removable sheet (such as release paper) may be attached to the adhesive layer 14 of the absorbent article 10 to protect it. The fastening material is not limited to the adhesive layer 14 formed by applying an adhesive to the non-skin-facing side 10a of the absorbent article 10, but may also be double-sided tape or hook-and-loop fasteners attached to the non-skin-facing side 10a of the absorbent article 10 (such as the non-skin-facing side 12a of the back sheet 12).

[0039] (Anti-slip material) As shown in Figures 1 and 4, the skin-facing side 10b of the absorbent article 10 is provided with an anti-slip material 15 that prevents the absorbent article 10 from slipping against the wearer's skin B. That is, the anti-slip material 15 is provided on the skin-facing side 10b of the absorbent article 10 and prevents it from slipping against the wearer's skin B, and has a function to prevent the absorbent article 10 from shifting against the skin. Examples of anti-slip material 15 include silicone rubber, polyurethane film, natural rubber, and nitrile rubber. Among these, silicone rubber is preferred as the anti-slip material 15 because it has excellent gas permeability and water vapor permeability from the viewpoint of preventing stuffiness.

[0040] The anti-slip material 15 is provided on at least one of the first regions 17 on both sides in the longitudinal direction of the absorbent article 10 and the second regions 18 on both sides in the width direction of the absorbent article 10, on the skin-facing side 10b of the absorbent article 10. In this embodiment, the anti-slip material 15 is provided on both the first region 17 and the second region 18. In this embodiment, the anti-slip material 15 is provided on both the first region 17 and the second region 18, but it is not limited to this, and it is sufficient to provide it on at least one of the first region 17 and the second region 18. In this embodiment, the first region 17 is a part of the skin-facing side 11a of the top sheet 11 and the second region 18 is a part of the skin-facing side of the gathered sheet 16a, but it is not limited to this, and the first region 17 and the second region 18 are parts of the skin-facing side 10b of the absorbent article 10.

[0041] (1st area) The first regions 17 on both sides in the longitudinal direction are preferably regions that overlap with both ends of the absorbent material 13 in the longitudinal direction when the absorbent article 10 is viewed from the skin side. That is, it is preferable that the first regions 17 on both sides in the longitudinal direction are located at both ends of the absorbent material 13 in the longitudinal direction. In this case, it is also preferable that the first regions 17 on both sides in the longitudinal direction are regions within a range of 20 mm or more and 60 mm or less from both ends 13a in the longitudinal direction of the absorbent material 13 toward the inside (center side) in the longitudinal direction. That is, it is preferable that the first regions 17 on both sides in the longitudinal direction are located within a range of 20 mm or more and 60 mm or less from both ends 13a in the longitudinal direction of the absorbent material 13. If the first regions 17 are set to a position shorter than 20 mm from both ends 13a in the longitudinal direction of the absorbent material 13, the operability when providing the anti-slip material 15 in the first regions 17 will decrease, and this may lead to a decrease in the productivity of the absorbent article 10. Furthermore, if the first region 17 is set to a position longer than 60 mm from both ends 13a in the longitudinal direction of the absorbent material 13, it will be closer to the center of the absorbent material 13, which may reduce the water absorption performance of the absorbent material 13. In other words, by setting the first region 17 to a region within the range of 20 mm to 60 mm from both ends 13a in the longitudinal direction of the absorbent material 13, it is possible to suppress a decrease in operability and productivity while ensuring the water absorption performance of the absorbent material 13.

[0042] (Second area) It is preferable that the second regions 18 on both sides in the width direction are located outside the absorbent 13 in the width direction. Furthermore, it is preferable that each of the second regions 18 on both sides in the width direction is spaced apart on both sides of the longitudinal center line CL of the absorbent article 10 (shown as a dashed line CL in Figure 1).

[0043] (Anti-slip area) Within the anti-slip region 19, which is the area enclosed by imaginary straight lines VL1 to VL4 (shown as dashed lines VL1 to VL4 in Figures 1 and 4) that are in contact with the outer ends of the anti-slip material 15 provided in the first region 17 and the second region 18 (hereinafter sometimes referred to as "each region 17, 18") from both the longitudinal and width directions, there is a gap 20 (hatched area in Figure 1) where the anti-slip material 15 is not placed. Here, the imaginary lines VL1 and VL2 on both sides in the longitudinal direction are imaginary lines that extend linearly in the width direction and are in contact with the anti-slip material 15 provided in each region 17, 18. Also, the imaginary lines VL3 and VL4 on both sides in the width direction are imaginary lines that extend linearly in the longitudinal direction and are in contact with the anti-slip material 15 provided in each region 17, 18. Note that the first region 17, the second region 18, and the anti-slip region 19 are different concepts. The first region 17 and the second region 18 are general areas representing the positions on the skin-facing side 10b of the absorbent article 10 where the anti-slip material 15 is provided, while the anti-slip region 19 is the area enclosed by the anti-slip material 15 provided in each region 17 and 18 by virtual lines VL1 to VL4. In other words, the anti-slip region 19 is an area included in either the first region 17 or the second region 18.

[0044] When the anti-slip material 15 is provided in the first region 17, it is preferable to provide the anti-slip material 15 so that the anti-slip region 19 is elongated in the width direction of the absorbent article 10. Also, when the anti-slip material 15 is provided in the second region 18, it is preferable to provide the anti-slip material 15 so that the anti-slip region 19 is elongated in the longitudinal direction of the absorbent article 10.

[0045] The area of ​​the void 20 provided in the anti-slip area 19 is preferably 50% or more of the area of ​​the anti-slip area 19, and preferably 80% or less. Furthermore, the lower limit of the area of ​​the void 20 is more preferably 60% or more of the area of ​​the anti-slip area 19, and the upper limit of the area of ​​the void 20 is more preferably 70% or less of the area of ​​the anti-slip area 19. If the area of ​​the void 20 is smaller than 50% of the area of ​​the anti-slip area 19, the adhesion between the absorbent article 10 and the skin may become too high, potentially causing stuffiness or skin irritation. Conversely, if the area of ​​the void 20 is larger than 80% of the area of ​​the anti-slip area 19, the anti-slip effect may not be sufficiently achieved. In other words, by setting the area of ​​the void 20 provided in the anti-slip area 19 to 50% or more and 80% or less of the area of ​​the anti-slip area 19, stuffiness and skin irritation can be suppressed, and a sufficient anti-slip effect can be achieved.

[0046] The total area of ​​the anti-slip regions 19 is preferably 10% or more, and preferably 30% or less, of the area of ​​the skin-facing side 10b of the absorbent article 10. By setting the total area of ​​the anti-slip regions 19 within the above range, it is possible to exert an anti-slip effect while suppressing skin damage caused by the anti-slip material 15.

[0047] When an anti-slip material 15 is provided in the first region 17, the widthwise length L3 of the anti-slip region 19 in the first region 17 is preferably 50% or more of the total widthwise length L2 of the absorbent article 10, and preferably 70% or less. By setting the widthwise length L3 of the anti-slip region 19 in the first region 17 to 50% or more of the total widthwise length L2 of the absorbent article 10, a slip-prevention effect can be achieved. Furthermore, by setting the widthwise length L3 of the anti-slip region 19 in the first region 17 to 70% or less of the total widthwise length L2 of the absorbent article 10, a decrease in the productivity of the absorbent article 10 can be suppressed, and productivity can be maintained at a good level.

[0048] When anti-slip material 15 is provided in second regions 18 spaced apart on both sides of the longitudinal center line CL of the absorbent article 10, the distance L4 from the center line CL to the anti-slip regions 19 of the second regions 18 on both sides in the longitudinal direction is preferably 10% or more of the total length L1 of the absorbent article 10 in the longitudinal direction, and preferably 20% or less. In this way, by spacing the second regions 18 on both sides in the longitudinal direction at least 10% of the total length L1 of the absorbent article 10 from the center line CL, it is possible to secure an area where anti-slip material 15 is not provided in the central part of the longitudinal direction including the center line CL, which is at least 20% of the total length L1 of the absorbent article 10. As a result, when the absorbent article 10 receives bodily fluids or other excretions, the three-dimensional gathers 16 in the central part of the longitudinal direction of the absorbent article 10 are raised, and the three-dimensional gathers 16 can function. Furthermore, by spacing the second regions 18 on both sides in the longitudinal direction from the center line CL by 20% or less of the total length L1 of the absorbent article 10 in the longitudinal direction, the area in the central part of the absorbent article 10 where the anti-slip material 15 is not provided can be reduced to 40% or less of the total length L1 of the absorbent article 10 in the longitudinal direction. This makes it possible to suppress the reduction in the anti-slip effect of the absorbent article 10 located in the crotch area.

[0049] The shape of the anti-slip material 15 provided in the first region 17 and the second region 18 is not particularly limited, and it is sufficient that there are gaps 20 within the anti-slip region 19. For example, multiple anti-slip materials 15 such as wavy lines, dashed lines, straight lines, or dots may be provided in each region 17 and 18 in such a manner that there are gaps 20 within the anti-slip region 19.

[0050] For example, as shown in Figures 1 and 4, multiple linear anti-slip materials 15 may be provided in parallel in each region 17 and 18. That is, multiple anti-slip materials 15 may be provided in parallel within the anti-slip region 19. In this embodiment, the multiple anti-slip materials 15 provided in the first region 17 are provided in parallel in the width direction with an inclination with respect to the longitudinal direction, and the multiple anti-slip materials 15 provided in the second region 18 are provided in parallel in the longitudinal direction with an inclination with respect to the width direction. As a result, within the anti-slip region 19 enclosed by the anti-slip materials 15 provided in each region 17 and 18 by virtual straight lines VL1 to VL4, there are gaps 20 where no anti-slip materials 15 are placed. The anti-slip region 19 of the first region 17 is elongated in the width direction of the absorbent article 10, and the anti-slip region 19 of the second region 18 is elongated in the longitudinal direction of the absorbent article 10.

[0051] In this case, it is preferable that the spacing L5 between multiple anti-slip materials 15 is greater than or equal to the width L6 of the anti-slip material 15 (100% or more of the width L6). In this embodiment, the spacing L5 between multiple anti-slip materials 15 is wider than the width L6 of the anti-slip material 15. If the spacing L5 between multiple anti-slip materials 15 is narrower than the width L6 of the anti-slip material 15, the adhesion between the absorbent article 10 and the skin may become too high, potentially causing stuffiness or skin irritation. In other words, by setting the spacing L5 between multiple anti-slip materials 15 to 100% or more of the width L6 of the anti-slip material 15, stuffiness and skin irritation can be suppressed.

[0052] Furthermore, it is preferable that the length L7 of the multiple anti-slip material 15 is 50% or less of the length L8 in the long side direction of the anti-slip area 19. If the length L7 of the multiple anti-slip material 15 is longer than 50% of the length L8 in the long side direction of the anti-slip area 19, the adhesion between the absorbent article 10 and the skin may become too high, potentially causing stuffiness or skin irritation. In other words, by setting the length L7 of the multiple anti-slip material 15 to 50% or less of the length L8 in the long side direction of the anti-slip area 19, stuffiness and skin irritation can be suppressed. Note that the long side direction of the anti-slip area 19 is the width direction of the absorbent article 10 in the case of anti-slip material 15 provided in the first area 17, and the longitudinal direction of the absorbent article 10 in the case of anti-slip material 15 provided in the second area 18.

[0053] Furthermore, it is preferable that the width L6 of the multiple anti-slip material 15 is 30% or less of the length L9 in the short-side direction of the anti-slip area 19. If the width L6 of the multiple anti-slip material 15 is longer than 30% of the length L9 in the short-side direction of the anti-slip area 19, the adhesion between the absorbent article 10 and the skin may become too high, potentially causing stuffiness or skin irritation. In other words, by setting the width L6 of the multiple anti-slip material 15 to 30% or less of the length L9 in the short-side direction of the anti-slip area 19, stuffiness and skin irritation can be suppressed. Note that the short-side direction of the anti-slip area 19 is the longitudinal direction of the absorbent article 10 in the case of anti-slip material 15 provided in the first area 17, and the width direction of the absorbent article 10 in the case of anti-slip material 15 provided in the second area 18.

[0054] (How to use) Next, an example of how to use the absorbent article 10 will be described. Figure 5 is an explanatory diagram showing the state in which the absorbent article is worn. Figure 5 is a schematic cross-sectional view of the state in which the absorbent article is worn, viewed from the side. Also, in Figure 5, clothing A (underwear, disposable diaper, etc.) and the wearer's body B are schematically shown, and the curved part at the bottom of body B is the crotch area, and the wearer's legs are not shown.

[0055] As shown in Figure 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 (the non-skin side 12a of the backsheet 12 in this embodiment) 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 15 of the skin side 10b of the absorbent article 10 comes into contact with the wearer's skin B. The anti-slip material 15 that comes into contact with the wearer's skin B provides an anti-slip effect for the absorbent article 10 against the wearer's skin B.

[0056] In the absorbent article 10 configured as described above, an adhesive layer (fastening material) 14 is provided on the non-skin side 10a of the absorbent article 10, which can be attached to the skin side A1 of clothing A. Therefore, the absorbent article 10 can be attached to clothing A when in use. In addition, an anti-slip material 15 is provided on the skin side 10b of the absorbent article 10, which prevents slippage against the wearer's skin B. Therefore, when clothing A is worn with the absorbent article 10 attached, the anti-slip material 15 on the skin side 10b of the absorbent article 10 comes into contact with the wearer's skin B. The anti-slip material 15 has an anti-slip effect on the absorbent article 10 against the wearer's skin B. For example, when clothing A shifts during prolonged use, the shifting of the absorbent article 10 against the wearer's skin B can be suppressed.

[0057] Furthermore, the anti-slip material 15 is provided on at least one of the first regions 17 on both sides in the longitudinal direction and the second regions 18 on both sides in the width direction of the skin-facing side 10b of the absorbent article 10. In other words, since the anti-slip material 15 can be provided symmetrically in the longitudinal or width direction on the skin-facing side 10b of the absorbent article 10, the occurrence of slippage of the absorbent article 10 against the wearer's skin B can be stably suppressed.

[0058] Furthermore, within the anti-slip region 19 enclosed by the virtual straight lines VL1 to VL4, where the anti-slip material 15 is provided in each region 17 and 18, there are gaps 20 where the anti-slip material 15 is not placed. As a result, breathability can be ensured in the anti-slip region 19 where the anti-slip material 15 is provided, so even with prolonged use, skin irritation caused by the anti-slip material 15 coming into contact with the wearer's skin B can be suppressed, and the occurrence of skin roughness can be reduced.

[0059] Therefore, according to this embodiment, it is possible to suppress the occurrence of shifting of the absorbent article 10 and the occurrence of skin irritation.

[0060] Furthermore, by setting the second regions 18 on both sides in the width direction to be outside the width direction of the absorber 13, it is possible to prevent a decrease in the absorption capacity of the absorber 13 due to the anti-slip material 15 provided in the second regions 18.

[0061] Furthermore, by setting the first regions 17 on both sides in the longitudinal direction at both ends of the absorbent body 13 in the longitudinal direction, the displacement of the absorbent body 13 can be concentrated and suppressed, so that bodily fluids and other excretions can be reliably received by the absorbent body 13.

[0062] Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can naturally be modified as appropriate without departing from the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on these embodiments are of course included in the scope of the present invention. [Explanation of symbols]

[0063] 10: Absorbent articles 10a: Non-skin side of absorbent article 10b: Skin side of absorbent article 11: Top sheet 12: Back seat 13: Absorbent material 14: Adhesive layer (adhesive material) 15: Anti-slip material 17:First area 18:Second area 19: Anti-slip area 20:Void A: Clothing A1: Skin side of clothing B: The wearer's skin

Claims

1. An absorbent article comprising a liquid-permeable top sheet located on the skin side when worn, a liquid-impermeable back sheet located on the non-skin side, and an absorbent material positioned between the top sheet and the back sheet, which can be attached to the wearer's clothing, A fastening material provided on the non-skin side of the absorbent article and attachable to the skin side of the garment, The absorbent article comprises an anti-slip material provided on the skin-facing side to prevent slipping against the wearer's skin, The anti-slip material is provided on at least one of the first regions on both sides in the longitudinal direction of the absorbent article and the second regions on both sides in the width direction of the absorbent article, on the skin surface of the absorbent article. Within the anti-slip region, which is the area enclosed by imaginary straight lines that are in contact with the outer end of the anti-slip material from both the longitudinal and width directions, there is a gap in which the anti-slip material is not placed. The first region is located at both ends of the absorber in the longitudinal direction, The second region is located outside the width direction of the absorber. An absorbent article characterized by the following features.

2. The first region is located in a range of 20 mm to 60 mm from both ends of the absorbent in the longitudinal direction. The length in the width direction of the anti-slip area of ​​the first region is 50% or more and 70% or less of the total length in the width direction of the absorbent article. The absorbent article according to feature 1.

3. The second region is provided spaced apart on both sides of the longitudinal center line of the absorbent article, The distance from the center line to the anti-slip areas 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 absorbent article according to claim 1 or 2.

4. The total area of ​​the anti-slip regions is 10% to 30% of the area of ​​the skin-facing surface of the absorbent article. The absorbent article according to claim 1 or 2.

5. The area of ​​the gap provided in the anti-slip region is 50% or more and 80% or less of the area of ​​the anti-slip region. The absorbent article according to claim 1 or 2.

6. Multiple anti-slip materials are provided in parallel within the anti-slip area. The spacing between the aforementioned multiple anti-slip materials is greater than or equal to the width of the anti-slip material. The absorbent article according to claim 1 or 2.

7. Multiple anti-slip materials are provided in parallel within the anti-slip area. The length of the anti-slip material is 50% or less of the length in the long side direction of the anti-slip area. The absorbent article according to claim 1 or 2.

8. Multiple anti-slip materials are provided in parallel within the anti-slip area. The width of the anti-slip material is 30% or less of the length of the short side of the anti-slip area. The absorbent article according to claim 1 or 2.

9. The anti-slip material is silicone rubber. The absorbent article according to claim 1 or 2.

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