JP2023176753A - Absorbent article - Google Patents

Abstract

To provide an absorbent article with an improved wearing feeling.SOLUTION: An absorbent article having a length along a longitudinal direction and a length along a width direction orthogonal to the longitudinal direction includes: an absorber; a water-permeable skin surface side sheet disposed on a skin surface side of the absorber; and a non-permeable non-skin surface side sheet disposed on a non-skin surface side of the absorber. The skin surface side sheet and the non-skin surface side sheet are longer in the width direction than the absorber, and extends outside a width direction end part of the absorber. The skin surface side sheet is longer in the width direction than the non-skin surface side sheet, and extends outside a width direction end part of the non-skin surface side sheet.SELECTED DRAWING: Figure 3

Description

The present invention relates to absorbent articles.

2. Description of the Related Art Absorbent articles that absorb fluids such as urine expelled from a wearer have been known. For example, Patent Document 1 discloses an absorbent pad.

International Publication No. 2016/114209

The present disclosure aims to provide an absorbent article with improved wearing comfort.

An absorbent article according to one aspect of the present disclosure is an absorbent article having a length along a longitudinal direction and a length along a width direction perpendicular to the longitudinal direction, the absorbent article including an absorbent body and a length along a width direction perpendicular to the longitudinal direction. A skin-side sheet with water permeability disposed on the skin side, and a non-skin-side sheet with water impermeability disposed on the non-skin side of the absorber, the skin-side sheet and The non-skin side sheet is longer than the absorbent body in the width direction and extends outward from the widthwise end of the absorbent body, and the skin side sheet is longer than the absorbent body in the width direction. It is longer in the width direction than the face side sheet, and extends outward from the width direction end portion of the non-skin side sheet.

According to the present disclosure, the feeling of wearing an absorbent article can be improved.

FIG. 1 is a plan view of an absorbent pad according to an embodiment viewed from the skin side. FIG. 2 is an exploded perspective view of the absorbent pad according to the embodiment. FIG. 3 is a cross-sectional view of the absorbent pad according to the embodiment taken along the width direction. FIG. 4 is a diagram showing a suspended state of the absorbent pad according to the embodiment. FIG. 5 is a cross-sectional view of the absorbent pad according to the embodiment taken along the width direction.

EMBODIMENT OF THE INVENTION Below, the absorbent article based on embodiment of this invention is demonstrated with reference to 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>
In this embodiment, a replaceable (disposable) absorbent pad (which is an example of an "absorbent article" in the present application) is arranged so as to face the front body and the back, which are arranged to face the abdomen of the wearer. The longitudinal direction is the direction connecting the back body. 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). The parts are connected and located. In addition, when the absorbent pad is worn by the wearer (hereinafter referred to as the "wearing state"), the side facing the wearer's skin (inner side when worn) is the skin side. The opposite side (outside when worn) is 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.

FIG. 1 is a plan view of an absorbent pad according to an embodiment viewed from the skin side. The absorbent pad 1 has a crotch region 1B corresponding to the crotch that covers the genitals of the wearer when worn, and a front region located on the abdominal side of the crotch region 1B and corresponding to the front body and waist of the wearer. It has a region 1F and a back body region 1R, which is located on the back side of the crotch region 1B and corresponds to the back body and waist of the wearer. An absorbent body 6 having a rectangular planar shape is incorporated in the front body region 1F, the back body region 1R, and the crotch region 1B, centering on the crotch region 1B. Note that the absorbent pad 1 according to the present embodiment has a symmetrical shape and configuration in the longitudinal direction, and has the same shape and configuration in the front body region 1F and the back body region 1R. The absorbent pad 1 is used by stacking it on the skin side of a tape-type diaper or a pants-type diaper. Since the absorbent pad 1 absorbs and retains urine and other fluids excreted by the wearer, only the absorbent pad 1 can be replaced and the diaper itself can be reused. In addition, the absorbent pad 1 may be placed on the skin side of the lower garment and used alone without being used together with a diaper. In this embodiment, an absorbent pad for adults (for nursing care) will be described.

The absorbent pad 1 also includes elastic bodies 2L and 2R (an example of a "shrink member" in the present application) extending in the longitudinal direction and disposed on both sides in the width direction. In the absorbent pad 1, leg gathers are formed along the wearer's thighs by the contraction force of the elastic bodies 2L and 2R. Since the leg gathers follow the wearer's thighs, the fluid discharged from the wearer is absorbed into the absorbent core of the absorbent pad 1 without leaking from the absorbent pad 1. Note that as the elastic members constituting the elastic bodies 2L and 2R, thread rubber, band-shaped rubber, or the like can be appropriately selected. Further, the elastic bodies 2L and 2R may be a plurality of parallel rubber threads. In this embodiment, the elastic bodies 2L and 2R are constituted by two rubber threads.

FIG. 2 is an exploded perspective view of the absorbent pad according to the embodiment. The absorbent pad 1 includes a top sheet 7 (an example of a "skin side sheet" in this application), a back sheet 5 (an example of a "non-skin side sheet" in this application), and a top sheet 7 and a back sheet 5. The absorbent body 6 is disposed between the top sheet 7 and the back sheet 5, and elastic bodies 2L and 2R are disposed on the outside of the absorbent body 6 in the width direction. The absorbent pad 1 has a layered structure in which a top sheet 7, an absorbent body 6, and a back sheet 5 are laminated in this order from the skin side. The top sheet 7, the absorbent body 6, and the back sheet 5 all have a rectangular shape, and their longitudinal directions coincide with the longitudinal direction of the absorbent pad 1. At the front body end, back body end, and widthwise end of the absorbent pad 1, the absorbent body 6 is not present, and the top sheet 7 and the back sheet 5 are adhered. In this way, in the absorbent pad 1, the top sheet 7 and the back sheet 5 are bonded to each other outside the region where the absorbent core 6 is arranged, and the absorbent core 6 is surrounded by this bonded region. Note that the planar shape of the absorbent body 6 may be a gourd shape. Note that the top sheet 7 and the back sheet 5 are bonded together using a hot melt adhesive.

The top sheet 7 is placed on the wearer's skin side so as to cover the water-absorbing surface of the absorbent body 6. The top sheet 7 is made of a spunbond nonwoven fabric containing thermoplastic resin fibers, an air-through nonwoven fabric, or the like. This top sheet 7 has water permeability (liquid permeability) in part or in whole. Therefore, when the absorbent pad 1 is worn, liquid discharged from the wearer enters the absorbent body 6 through the top sheet 7 that can come into contact with the wearer's skin, and is absorbed there. Moreover, the top sheet 7 may have hydrophilicity.

The absorbent body 6 has an absorbent core that absorbs liquid and a core wrap sheet that wraps around the absorbent core. The absorbent core is formed from short fibers of cellulose fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers obtained by subjecting synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate to hydrophilic treatment. A liquid-permeable nonwoven fabric is used for the core wrap sheet. In this embodiment, tissue is used for the core wrap sheet. Note that details of the absorber 6 will be described later.

The back sheet 5 is a sheet made of liquid-impermeable thermoplastic resin in order to suppress leakage of discharged materials. The backsheet 5 is preferably made of a material that is also moisture permeable in order to suppress stuffiness when worn.

The backsheet 5, absorbent core 6, and topsheet 7 all extend from the front body region 1F to the back body region 1R. Therefore, when the wearer's genitals are covered with the absorbent pad 1, the longitudinal ends of the backsheet 5, absorbent core 6, and topsheet 7 are positioned on the ventral and dorsal sides of the wearer. That is, the wearer's genitals are covered with the absorbent body 6 from the ventral side to the back side of the wearer. Therefore, whether the wearer is in a supine or prone position, the drained liquid will enter the absorbent body 6 through the top sheet 7.

FIG. 3 is a cross-sectional view of the absorbent pad according to the embodiment taken along the width direction. Specifically, FIG. 3 is a cross-sectional view taken along line AA in FIG. The absorbent core 6 of the absorbent pad 1 according to this embodiment has an absorbent core 6C and a core wrap sheet 6W that wraps around the absorbent core 6C. The absorbent core 6C is formed by laminating a plurality of absorbent mats. Specifically, the absorbent core 6C includes an upper absorbent mat 6A provided on the wearer's skin side and a lower absorbent mat 6B provided on the wearer's non-skin side. Further, the absorbent core 6C has SAP layers 8L and 8R between the upper absorbent mat 6A and the lower absorbent mat 6B. The SAP layers 8L and 8R are formed by collecting a plurality of particles of SAP (Super Absorbent Polymer), which is a hydrophilic polymer with a crosslinked structure that can absorb and retain water. The SAP layers 8L and 8R are arranged outside the widthwise central portion of the absorbent body 6 and extend along the longitudinal direction of the absorbent body 6. The SAP layers 8L and 8R are provided symmetrically to each other in the width direction. Note that the top sheet 7 extends toward the non-skin surface side, that is, the back sheet 5 side, and is bonded to the back sheet 5.

The SAP particles of this embodiment refer to particles of a resin composition containing SAP. The "resin composition containing SAP" as used herein refers to both compositions consisting only of SAP and compositions containing SAP as a main component and containing other substances to the extent that they do not adversely affect water absorption. It is a concept that encompasses Examples of "other substances" include additives (such as a surface modifier added for the purpose of making the particle surface hydrophobic), unreacted monomers remaining during the synthesis of SAP, and the like. Note that SAP particles may be arranged between the short fibers of the upper absorbent mat 6A and the lower absorbent mat 6B.

The core wrap sheet 6W is a thin liquid-permeable sheet, and by wrapping the absorbent core 6C with the core wrap sheet 6W, SAP particles in the SAP layers 8L and 8R are prevented from spilling to the outside of the absorber 6. . Furthermore, by wrapping the absorbent core 6C with the core wrap sheet 6W, the absorbent core 6C is prevented from losing its shape. The core wrap sheet 6W can be made of nonwoven fabric or pulp fiber, and tissue paper can be used as an example of the pulp fiber. Note that the absorbent body 6 is wrapped in the back sheet 5 and the top sheet 7, and since these sheets can also prevent the absorbent body from losing its shape, a configuration may be adopted in which the core wrap sheet 6W is not provided. In the configuration shown in FIG. 3, the core wrap sheet 6W includes an upper core wrap sheet 6WA that covers the top sheet 7 side that is the skin side of the absorbent core 6C, and a back sheet 5 that covers the non-skin side of the absorbent core 6C. The absorbent core 6C is composed of two sheets: a side surface and a lower core wrap sheet 6WB that covers the side surface side of the absorbent core 6C. The upper core wrap sheet 6WA and the lower core wrap sheet 6WB are laminated and bonded to each other at both ends in the width direction on the skin side of the absorbent core 6C. Therefore, the skin side of the absorbent body 6 is made up of the upper layer core wrap sheet 6WA, and the side surface side and the non-skin side of the absorbent body 6 are made up of the lower layer core wrap sheet 6WB.

Generally, as mentioned above, absorbent pads are often used in combination with diapers. Pants-type diapers and tape-type diapers are secured at the wearer's waist. However, although the absorbent pad is placed on the skin side of the diaper, it is not directly fixed to the wearer, so there is a risk that the absorbent pad may become misaligned within the diaper. The purpose of the absorbent pad 1 according to this embodiment is to improve the fixing force to a diaper used in combination. Double-sided tape is not used to improve this fixing force. The absorbent pad 1 according to the present embodiment can improve the fixing force to the diaper without using double-sided tape or the like, that is, while reducing the amount of materials used. Therefore, the absorbent pad 1 according to the present embodiment can suppress misalignment with respect to the diaper, thereby improving the feeling of wearing.

In the absorbent pad 1 according to the present embodiment, as shown in FIGS. 1 and 3, the top sheet 7 and the back sheet 5 are longer than the absorbent core 6 in the width direction, and Extends outward from the section. Here, the top sheet 7 is longer than the back sheet 5 in the width direction, and extends further outward than the ends of the back sheet 5 in the width direction. For this reason, the top sheet 7 protrudes most outward in the width direction within the absorbent pad 1, and comes into contact with materials such as diapers used in combination. The top sheet 7 gets wet with urine excreted by the wearer and comes into close contact with materials such as diapers. The diaper 1 according to the present embodiment can also suppress misalignment due to the adhesion force provided by the top sheet 7.

Furthermore, the frequency of diaper replacement is lower than that of the absorbent pad 1, and a new absorbent pad 1 may be placed in the diaper while the top sheet of the diaper is wet. In this case, the portion of the top sheet 7 of the absorbent pad 1 that extends outward in the width direction comes into contact with the top sheet of the diaper and becomes wet. Since the top sheet 7 comes into close contact with the top sheet of the diaper when wet, the absorbent pad 1 can suppress displacement.

Further, in the absorbent pad 1 according to the present embodiment, a non-water-permeable leak-proof sheet forming three-dimensional gathers is not provided on the skin side of the top sheet 7, and the top sheet 7 is It is placed closest to the wearer on the entire surface. Usually, the absorbent pad 1 is arranged between a pair of three-dimensional gathers of a diaper used in combination. Since the absorbent pad 1 does not have a leak-proof sheet, the top sheet 7 comes into contact with the three-dimensional gathers of the diaper. In such a state, the liquid discharged by the wearer is transmitted to the entire width of the top sheet 7, and moisture is present between the top sheet 7 and the three-dimensional gathers of the diaper, and due to the surface tension between the two, The top sheet 7 and the three-dimensional gathers of the diaper are in close contact with each other, and the positional shift of the absorbent pad 1 can be suppressed. It is also assumed that the drained liquid leaks from the absorbent pad 1 and enters between the diaper and the backsheet 5. Due to the presence of moisture between the backsheet 5 and the topsheet of the diaper, the backsheet 5 and the topsheet of the diaper are brought into close contact with each other due to the surface tension between them, thereby suppressing misalignment of the absorbent pad 1.

Further, the elastic bodies 2L and 2R are disposed between the top sheet 7 and the back sheet 5 on the outer side of the widthwise ends of the absorbent body 6 and on both sides of the widthwise ends. FIG. 4 shows a state in which the absorbent pad 1 according to the present embodiment is suspended from above with its longitudinal end portion (for example, the end portion on the front body region side) sandwiched. The absorbent pad 1 contracts in the longitudinal direction due to the contraction force of the elastic bodies 2L and 2R (see FIGS. 1 to 3), and is bulged and bent toward the backsheet 5 side. Even when the absorbent pad 1 is used in combination with a diaper, it is in approximately the same state as shown in FIG. 4 . The elastic bodies 2L and 2R are bonded to the backsheet 5 in a stretched state, causing the backsheet 5 to contract in the longitudinal direction.

As shown in FIG. 4, the absorbent pad 1 according to the present embodiment is in a state in which the end side in the width direction stands up from the backsheet 5 toward the wearer. Although the absorbent pad according to the present embodiment does not include three-dimensional gathers, the non-water permeable backsheet 5 rises toward the wearer, so that leakage of liquid from the outside in the width direction can be suppressed.

Further, the backsheet 5 rises toward the wearer from the widthwise end of the absorbent core 6 as a starting point. Here, as shown in FIG. 3, an area F surrounded by a dotted line in the figure near the widthwise end of the absorbent body 6 is located on the upper surface (skin surface) of the top sheet 7 when the back sheet 5 stands up. In contrast, it becomes a concave part that functions as a groove for draining fluids such as urine. This groove extends along the longitudinal direction of the absorbent pad 1. For example, most of the urine that reaches the widthwise ends of the absorbent body 6 flows along the grooves in the longitudinal direction without leaking from the widthwise ends, and is absorbed by the absorbent body 6 while flowing. Therefore, although the absorbent pad 1 according to the present embodiment does not include three-dimensional gathers, the amount of liquid leaking from the width direction, that is, so-called lateral leakage, can be reduced.

Further, as shown in FIG. 4, the elastic bodies 2L and 2R contract the backsheet 5, so that the widthwise component of the absorbent pad 1 is mainly the first fold 10 and the longitudinal component of the absorbent pad 1. A plurality of second folds 11 each containing the main component are formed.

In FIG. 4, six first folds 10 are illustrated and described with reference numerals, but the number of first folds is not limited to these six. A plurality of first folds are formed on the widthwise end side of the absorbent pad 1 . Further, in FIG. 4, four second folds 11 are illustrated and described with reference numerals, but the number of second folds is not limited to these four. A plurality of second folds are formed on the longitudinal end side of the absorbent pad 1 . Note that the first folds 10 extend diagonally and may include a longitudinal component of the absorbent pad 1, but the width component of the absorbent pad 1 is larger than the longitudinal component of the absorbent pad 1. It is a fold. Similarly, the second folds 11 extend diagonally and may include a widthwise component of the absorbent pad 1, but the lengthwise component of the absorbent pad 1 is larger than the widthwise component of the absorbent pad 1. It is a large fold.

In the absorbent pad 1, the first folds 10 and the second folds 11 sandwich the diaper material (for example, the top sheet of the diaper), thereby suppressing misalignment within the diaper. Since the absorbent pad 1 according to the present embodiment has a plurality of first folds 10 and second folds 11 formed during use, any one of the folds will sandwich the diaper material even when used for various types of diapers. becomes possible. Therefore, the absorbent pad 1 can be suitably combined with various diapers.

Further, as shown in FIG. 4, the absorbent pad 1 includes a combination of a plurality of first folds 10 with different intervals between the plurality of first folds 10 (for example, a combination of the first folds 10A and a combination of the first folds 10A, 10B), and a combination of a plurality of second folds 11 in which the intervals between the plurality of second folds 11 are different from each other (for example, a combination of second folds 11A and a combination of second folds 11B). As a result, the absorbent pad 1 has a combination of the first pleats 10A, the first pleats 10B, the second pleats 11A, or the second pleats 11B. There is a high possibility that the diaper material will get caught. Therefore, the absorbent pad 1 can be suitably combined with various diapers. Note that the combination of the first pleats 10A, the first pleats 10B, the second pleats 11A, and the second pleats 11B shown in FIG. 4 is an example. The absorbent pad 1 can be suitably combined with various diapers by having a plurality of combinations of the first pleats 10A, the first pleats 10B, the second pleats 11A, and the second pleats 11B.

Moreover, as shown in FIG. 4, the absorbent pad 1 has a combination of a plurality of first folds 10 adjacent to each other (for example, a combination of first folds 10C), and a plurality of second folds 10C. The folds 11 include a combination of a plurality of adjacent second folds 11 (for example, a combination of second folds 11C). This allows the absorbent pad 1 to more firmly sandwich the diaper material by the combination of the first folds 10C or the combination of the second folds 11C. Therefore, the absorbent pad 1 can suppress misalignment. Note that the combination of the first pleats 10C and the second pleats 11C shown in FIG. 4 is an example. The absorbent pad 1 has a plurality of combinations of first pleats 10 and second pleats 11, so that it can be suitably combined with various diapers.

Here, the static friction coefficient (static friction coefficient) of the backsheet 5 in this embodiment will be explained. The static friction coefficient of the absorbent pad 1 can be measured by the following method. The static friction coefficient was measured in accordance with JIS P 8147:2010 (Paper and paperboard - Measuring method for static and dynamic friction coefficients) using a surface property measuring device (Tribogear TYPE: 14DR) manufactured by Shinto Kagaku Co., Ltd. back seat 5
The static friction coefficient was 0.63 or less. Note that the static friction coefficient of the backsheet 5 is preferably 0.50 or more, but may be smaller than 0.50. Note that the back sheet 5 is made of polyethylene film.

In general, absorbent pads whose exterior surface is made of a material that is slippery are provided with an adhesive part that adheres to the diaper, etc., in order to prevent them from shifting in the diaper or holder pants used in combination. In order to increase the coefficient of static friction, it is necessary to layer non-woven fabric or the like. In commercially available absorbent pads, a cover sheet made of nonwoven fabric often forms the exterior surface. On the other hand, the absorbent pad 1 according to this embodiment does not include a cover sheet, and the back sheet 5 forms the exterior surface. The back sheet 5 is made of a liquid-impermeable sheet material (for example, a film). Such a backsheet 5 has a lower coefficient of static friction than a nonwoven cover sheet, and is more slippery than a cover sheet. However, in the absorbent pad 1 according to the present embodiment, the first pleats 10 and the second pleats 11 can prevent misalignment within the combined diaper.

Here, the contracted regions of the elastic bodies 2L and 2R are located between both ends of the absorber 6 in the longitudinal direction. The elastic bodies 2L, 2R are bonded to the backsheet 5, and the shrinkage area of the elastic bodies 2L, 2R is determined by the bonded end portions to the backsheet 5 in the shrinkage direction. In FIG. 1, the bonded end portion 2E is a portion of the elastic bodies 2L and 2R surrounded by an ellipse indicated by a dotted line. As shown in FIG. 1, in this embodiment, the elastic bodies 2L and 2R themselves are accommodated between both longitudinal ends of the absorber 6, and the adhesive end 2E is also located between both longitudinal ends of the absorber 6. It fits in. Note that the elastic bodies 2L, 2R themselves may protrude from between both ends of the absorber 6 in the longitudinal direction. Note that the elastic bodies 2L and 2R are also bonded to the top sheet 7.

The contracted regions of the elastic bodies 2L and 2R are located between both longitudinal ends of the absorbent body 6, so that the backsheet 5 does not stand up toward the wearer outside the longitudinal ends of the absorbent body 6. Therefore, the top sheet 7 is in contact with the wearer's skin while maintaining substantially the same plane as the absorber 6. When the top sheet 7 gets wet, it comes into close contact with the diaper material. Thereby, the absorbent pad 1 can suppress misalignment.

Furthermore, since a relatively large amount of urine is absorbed by the absorber 6 at a location closer to the urethral opening, the amount of urine that reaches a position away from the urethral opening of the wearer is relatively small. At the outer side of the longitudinal end of the absorbent body 6, which is a position away from the urethral opening, the top sheet 7 is wetted with a small amount of urine, and thus comes into close contact with the material of the diaper. Further, in a region closer to the urethral opening, the backsheet 5 rises toward the wearer, thereby suppressing lateral leakage of liquid.

Here, as shown in FIG. 1, the absorber 6 has a high-rigidity part 6H that is provided at the longitudinal end and the width-direction end and has higher rigidity than other parts. The longitudinal ends and widthwise ends are the four corners of the rectangular absorbent body 6. The rigidity of these four corners is higher than that of other parts of the absorbent body.

FIG. 5 is a cross-sectional view of the absorbent pad according to the embodiment taken along the width direction. Specifically, FIG. 5 is a cross-sectional view taken along line BB in FIG. As shown in FIG. 5, the number of laminated core wrap sheets 6W in the high-rigidity portion 6H is greater than in other portions in the thickness direction. Specifically, on the skin side of the absorber 6, an upper core wrap sheet 6WA and a lower core wrap sheet 6WB are laminated, and both are bonded together with a large amount of hot melt adhesive. Note that the absorbent body 6 is pressed in the step of bonding the upper core wrap sheet 6WA and the lower core wrap sheet 6WB. A high-rigidity portion 6H is formed by bonding the upper core wrap sheet 6WA and the lower core wrap sheet 6WB stacked in the thickness direction to each other. Note that the high rigidity portion 6H may also be formed by laminating a plurality of core wrap sheets.

The effects of providing the high-rigidity portion 6H will be explained with reference to FIG. 4. The high-rigidity portion 6H has such rigidity that it does not contract due to the contraction force of the elastic bodies 2L and 2R, or that it contracts only slightly compared to other parts of the absorbent body 6, the top sheet 7, and the back sheet 5. ing. Since the high-rigidity portion 6H does not contract or only slightly contracts due to the contraction force of the elastic bodies 2L and 2R, third folds 12 are formed near the high-rigidity portion 6H on the exterior surface side. The third fold 12 is formed between the high rigidity portion 6H and the elastic bodies 2L and 2R. Since the high-rigidity portion 6H does not contract, the third folds 12 become folds that include a component in the direction of contraction of the elastic bodies 2L and 2R, that is, in the longitudinal direction of the absorbent pad 1. The third folds 11 extend diagonally and may include a widthwise component of the absorbent pad 1, but are folds in which the lengthwise component of the absorbent pad 1 is larger than the widthwise component of the absorbent pad 1. be. Since the absorbent pad 1 according to this embodiment has a plurality of third folds 12 formed during use, any one of the folds can sandwich the diaper material even when used for various types of diapers. . Note that the third folds 12 are formed near the high-rigidity portions 6H at the four corners of the absorbent body 6. Therefore, the absorbent pad 1 can be suitably combined with various diapers.

In addition, as shown in FIG. 1, the distance D1 between the elastic bodies 2L, 2R and the widthwise ends of the absorbent body 6 is determined by '') and the longitudinal end of the absorber 6 is shorter than the distance D2. Thereby, as shown in FIG. 4, third folds 12 can be formed in which the lengthwise component of the absorbent pad 1 is larger than the widthwise component of the absorbent pad 1.

Further, as shown in FIGS. 2 and 3, an absorbent body 6 is laminated on the skin side of the backsheet 5, and the backsheet 5 and the absorbent body 6 are bonded together. Here, as shown in FIG. 4, since the backsheet 5 and the high rigidity part 6H of the absorbent body 6 are bonded together, diagonal wrinkles 13 are formed in the part of the backsheet 5 that overlaps with the high rigidity part 6H. It is formed. The diagonal direction has components in both the longitudinal direction and the width direction of the absorbent pad 1. Note that the wrinkles 13 are likely to be formed at the boundary between the high-rigidity portion 6H and other parts of the absorbent body 6. Since the high-rigidity part 6H does not shrink, it can maintain its planar shape and faces the diaper used in combination in a generally parallel state, but the absorbent pad 1 is located on the non-skin side (exterior side) of the high-rigidity part 6H The wrinkles 13 also allow engagement with the material of the diaper. Thereby, the absorbent pad 1 can suppress displacement within the diaper.

Although the present embodiment has been described above, the content of the present invention is not limited to the above embodiment. In the absorbent pad 1 according to the embodiment described above, the sheet forming the exterior surface is the back sheet 5, but the invention is not limited to this. In the absorbent pad 1, the sheet forming the exterior surface may be a cover sheet using a nonwoven fabric.

The features included in each of the embodiments and modifications thereof disclosed above can be combined, respectively.

1... Absorbent pad 1B... Crotch area 1F... Front body area 1R... Back body area 2L, 2R... Elastic body 2E... Adhesive end 5... Back sheet 6... Absorbent body 6C... Absorption Core 6A...Upper layer absorbent mat 6B...Lower layer absorbent mat 6W...Core wrap sheet 6WA...Upper layer core wrap sheet 6WB...Lower layer core wrap sheet 6H...High rigidity section 7...Top sheet 8L, 8R...SAP Layer 10...First pleat 11...Second pleat 12...Third pleat 13...Wrinkle

Claims (10)

An absorbent article having a length along a longitudinal direction and a length along a width direction perpendicular to the longitudinal direction,
absorber and
a water-permeable skin-side sheet disposed on the skin-side of the absorbent body;
a non-skin side sheet having water impermeability disposed on the non-skin side of the absorbent body;
Equipped with
The skin-side sheet and the non-skin-side sheet are longer in the width direction than the absorbent body and extend outward from the widthwise ends of the absorbent body,
The skin side sheet is longer in the width direction than the non-skin side sheet, and extends outward from the width direction end portion of the non-skin side sheet.
Absorbent articles. a shrinkable member bonded to the non-skin side sheet in a stretched state, the shrinkable member shrinking at least the non-skin side sheet in the longitudinal direction;
The shrinkable member is disposed outside the width direction end of the absorbent body and on both sides of the width direction end, between the skin side sheet and the non-skin side sheet.
The absorbent article according to claim 1. The shrinkable region of the shrinkable member is located between the longitudinal ends of the absorbent body.
The absorbent article according to claim 2. The absorbent body has a high-rigidity portion that is provided at the longitudinal end portion and the width direction end portion and has higher rigidity than other parts.
The absorbent article according to claim 2. The high-rigidity portion has a rigidity that does not shrink by the shrinkable member.
The absorbent article according to claim 4. The absorbent body has an absorbent core that absorbs liquid and a core wrap sheet that covers the absorbent core,
In the high-rigidity portion, the number of laminated core wrap sheets is greater than in other portions in the thickness direction.
The absorbent article according to claim 4. The high rigidity portion is formed by adhering the core wrap sheets laminated in the thickness direction to each other.
The absorbent article according to claim 6. The distance between the shrinkable member and the widthwise end of the absorbent body is shorter than the distance between the end of the elastic region of the shrinkable member and the longitudinal end of the absorbent body.
The absorbent article according to claim 4. By adhering the non-skin side sheet and the high rigidity portion of the absorbent body, components in both the longitudinal direction and the width direction are applied to the portion of the non-skin side sheet that overlaps with the high rigidity portion. diagonal wrinkles are formed,
The absorbent article according to claim 4. A non-water permeable leak-proof sheet forming three-dimensional gathers is not provided on the skin side of the skin side sheet,
The skin-side sheet is disposed closest to the wearer on the entire surface in the width direction,
The absorbent article according to claim 1 or 2.

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