JP2023107987A - absorbent article - Google Patents

Abstract

To provide an absorbent article which has an outer cover and an inner pad, and where the inner pad hardly shifts relative to the outer cover in using by placing the inner pad on a skin surface side of the outer cover and is easily removed from the outer cover.SOLUTION: An absorbent article 1 includes an outer cover 11 and an inner pad 21 placed on a skin surface side of the outer cover 11. The outer cover 11 includes a front abdominal part and a rear back part in a front-back direction y and a crotch part positioned between them and is worn by covering around hips of a wearer with the front abdominal part and the rear back part. The inner pad 21 is placed on the crotch part of the outer cover 11. An outer slip prevention part 15 constituted of a non-adhesive resin layer is provided on the skin surface side of the outer cover 11, and the inner pad 21 includes an absorber 24 and is equipped with an inner slip prevention part 25 constituted of a non-adhesive resin layer on a non-skin surface side.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an absorbent article having an outer cover and an inner pad.

2. Description of the Related Art Conventionally, there has been known an outer cover, a so-called diaper cover, for attaching an inner pad, such as a urine pad, to the crotch of a wearer. For example, Patent Literature 1 discloses a disposable diaper cover used by storing a flat plate disposable diaper inside, wherein the diaper cover has an absorbent member between a liquid-permeable topsheet and a liquid-impermeable backsheet. A disposable diaper cover is disclosed in which fastening tapes are arranged on the right and left sides of the diaper cover, and elastic members are attached to the body and leg portions. In Patent Document 2, a sheet-like diaper cover main body having a first absorbent body attached to the skin surface side, and left and right rising flaps to which elastic members extending in the front-rear direction are joined in a stretched state to free ends are provided. In the disposable diaper cover, the base ends of the left and right rising flaps are attached to the skin surface side of the diaper cover main body so as to be spaced outward from the left and right side edges of the first absorbent body. A disposable diaper cover is disclosed in which the distance is set wider than the lateral width of a second absorbent body that can be placed on the first absorbent body. Patent Document 3 discloses a pants-type disposable diaper cover in which a replaceable absorbent pad is detachably attached. A pants-type disposable diaper cover is disclosed in which elastic members are arranged in a curved shape so as to extend to both sides around the waist.

JP-A-8-150163 JP-A-2002-272787 JP 2007-167534 A

The outer cover, which is used with the inner pad placed on the skin surface side, has the inner pad placed at an appropriate position on the skin surface side of the outer cover so that the inner pad can suitably receive urine, etc. excreted by the wearer. are required to be arranged without deviation. As a result, it is possible to reliably absorb urine and the like excreted by the wearer and prevent leakage of urine and the like. On the other hand, it is assumed that the inner pad will be replaced as appropriate according to the absorption of urine excreted by the wearer, and it is desirable that the inner pad can be easily replaced.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an absorbent article having an outer cover and an inner pad. To provide an absorbent article in which a pad is hard to shift with respect to an outer cover and the inner pad can be easily removed from the outer cover.

The absorbent article of the present invention that can solve the above-mentioned problems is an absorbent article having a front-rear direction and a width direction, and having an outer cover and an inner pad placed on the skin surface side of the outer cover. The outer cover has a front abdomen, a back part, and a crotch part positioned between them in the front-rear direction, and is worn so that the front abdomen and the back part cover the waist of the wearer, and the inner pad is It is placed on the crotch part of the outer cover, the outer cover is provided with an outer non-slip part on the skin side, the inner pad is equipped with an absorbent body, and the inner non-slip part is provided on the non-skin side. have

The absorbent article of the present invention is composed of a combination of the inner pad and the outer cover, and the anti-slip portion is provided on the non-skin side of the inner pad and on the skin side of the outer cover. When the inner pad is used while being placed on the skin side of the cover, the inner pad is less likely to shift with respect to the outer cover, and the inner pad can be stably placed at a predetermined position. On the other hand, when replacing the inner pad, the inner pad can be easily removed from the outer cover, which facilitates the replacement work of the inner pad.

It is preferable that one of the inner anti-slip portion and the outer anti-slip portion is provided extending in the front-rear direction, and the other of the inner anti-slip portion and the outer anti-slip portion is provided extending in the width direction. . By providing the inner anti-slip portion and the outer anti-slip portion in this manner, the inner anti-slip portion and the outer anti-slip portion are more likely to come into contact with each other, and the anti-slip effect of the inner pad can be enhanced.

It is preferable that the inner anti-slip portion is provided extending in the front-rear direction, and the outer anti-slip portion is provided extending in the width direction. When the inner pad is placed on the skin side of the outer cover and worn, the inner pad is more likely to bend in the front-rear direction than in the width direction at the crotch portion of the wearer. At this time, if the inner anti-slip portion is provided so as to extend in the front-rear direction, the inner anti-slip portion acts to maintain a planar state in the front-rear direction against the curvature of the inner pad in the front-rear direction. On the other hand, since the outer non-slip portion extends in the width direction, the outer cover can be easily curved in the front-rear direction according to the shape of the wearer's crotch when the outer cover is worn. Therefore, the inner non-slip portion is likely to come into strong contact with the skin side of the outer cover, and the effect of preventing the inner pad from slipping can be enhanced.

The outer anti-slip portion is provided on the front abdomen and the back, respectively, and the length of the inner anti-slip portion in the front-rear direction must be longer than the distance between the outer anti-slip portion on the front abdomen and the outer anti-slip portion on the back. preferable. As a result, when the inner pad is placed on the skin surface side of the outer cover, the inner non-slip portion can be brought into contact with both the outer non-slip portion on the front abdomen and the outer non-slip portion on the rear portion. The anti-slip effect can be enhanced. In addition, since the length of the inner pad in the front-rear direction is formed longer, the absorption performance of the inner pad can be enhanced.

It is preferable that the inner non-slip portion is provided so as to overlap the absorber of the inner pad. By arranging the inner anti-slip part at a position overlapping the absorber of the inner pad, the inner anti-slip part can easily come into strong contact with the skin side of the outer cover, and the anti-slip effect of the inner pad can be enhanced.

The outer cover preferably has an absorber. If the outer cover has an absorbent body, even if urine or the like overflows from the inner pad, the overflowed urine or the like can be favorably absorbed by the absorbent body of the outer cover.

When the outer cover has an absorbent body, it is preferable that the outer non-slip portion is provided so as to overlap the absorbent body of the outer cover. By arranging the outer non-slip portion at a position overlapping the absorber of the outer cover, the outer non-slip portion is likely to come into strong contact with the non-skin surface side of the inner pad, and the slippage prevention effect of the inner pad can be enhanced.

It is preferable that the absorber of the outer cover is provided with an opening or recess extending in the front-rear direction in the widthwise central portion of the outer cover, and the outer anti-slip portion is provided so as not to overlap the opening or recess. . By forming the absorber of the outer cover in this way, the outer cover is recessed at the portion where the opening or recess of the absorber is formed, and the inner pad is stably placed at a predetermined position of the outer cover. easier to do. In this case, by providing the outer non-slip portion so as not to overlap the opening or recess of the absorbent body, the outer non-slip portion is likely to come into strong contact with the non-skin side of the inner pad, thereby preventing the inner pad from slipping. can be enhanced.

The outer anti-slip portion is preferably colored other than white. This makes it easier to set the inner pad at an appropriate position on the skin surface side of the outer cover using the outer non-slip portion as a guide.

It is preferable that no leak-proof flaps extending in the front-rear direction be provided on both sides in the width direction of the skin surface of the outer cover. If the outer cover is not provided with a leak-proof flap, it is possible to reduce bulkiness in the crotch area of the wearer when the inner pad is placed on the skin side of the outer cover. In addition, in the absorbent article of the present invention, even if the outer cover is not provided with the leakage prevention flap, the inner anti-slip portion and the outer anti-slip portion facilitate maintaining the inner pad at a predetermined position.

The absorbent article of the present invention is composed of a combination of an inner pad and an outer cover, and non-slip portions are provided on the non-skin side of the inner pad and on the skin side of the outer cover. Therefore, when the inner pad is placed on the skin surface side of the outer cover and used, the inner pad is less likely to shift with respect to the outer cover, and the inner pad can be placed stably and easily. On the other hand, when replacing the inner pad, the inner pad can be easily removed from the outer cover, which facilitates the replacement work of the inner pad.

An example of the absorbent article of this invention is represented, and the partially notched top view which looked at the absorbent article from the skin surface side is represented. The top view which looked at the outer cover of the absorbent article shown in FIG. 1 from the skin surface side is represented. The top view which looked at the inner pad of the absorbent article shown in FIG. 1 from the skin surface side is represented. The top view which looked at the inner pad of the absorbent article shown in FIG. 1 from the non-skin surface side is represented. 2 shows a VV cross-sectional view of the absorbent article shown in FIG. 1. FIG.

The absorbent article of the present invention has an outer cover and an inner pad placed on the skin side of the outer cover. When wearing the absorbent article, the outer cover is worn so as to cover the waist of the wearer, and the inner pad is placed on the skin side of the crotch portion of the outer cover. The inner pad is provided detachably from the outer cover, and can be appropriately replaced according to the state of absorption of urine excreted by the wearer. The absorbent article of the present invention is composed of the combination of the inner pad and the outer cover in this way, and the anti-slip portion is provided on the non-skin side of the inner pad and the skin side of the outer cover. By configuring the inner pad and the outer cover in this way, when the inner pad is placed on the skin surface side of the outer cover and used, the inner pad is less likely to shift with respect to the outer cover, and the inner pad can be held in a predetermined position. On the other hand, when replacing the inner pad, the inner pad can be easily removed from the outer cover.

The absorbent article has a front-rear direction and a width direction. The front-rear direction means the direction extending in the front-rear direction between the wearer's crotch when the absorbent article is worn by the wearer. The width direction means a direction that is on the same plane as the absorbent article and perpendicular to the front-rear direction, and corresponds to the lateral direction of the wearer when wearing the absorbent article. A direction perpendicular to a plane defined by the front-rear direction and the width direction is defined as the thickness direction. Furthermore, when the absorbent article is worn by the wearer, the side facing the wearer's skin is defined as the skin side, and the opposite side is defined as the non-skin side.

The outer cover has a front abdominal portion, a rear back portion, and a crotch portion positioned therebetween in the front-rear direction, and is worn so that the front abdominal portion and the rear back portion cover the waist of the wearer. The front abdomen corresponds to a portion that is brought into contact with the wearer's ventral side when the outer cover is worn, and the back portion corresponds to the portion that is brought into contact with the wearer's dorsal side when the outer cover is worn. The crotch portion is located between the front abdomen and the rear portion of the wearer's back, and is a portion that is put against the crotch of the wearer, that is, a portion that is sandwiched between the thighs. The outer cover is worn so as to cover the wearer's waist with the front abdomen and the back, and has a pant-like shape when worn. A pant shape means a shape with one waist opening and two leg openings. The waist opening is the opening for the wearer's torso and the leg opening is the opening for the wearer's legs.

The outer cover may be formed into a pants shape before being worn, or may be formed into a pants shape when worn. In the latter case, as the outer cover, fastening members are provided on both sides in the width direction of the back portion, and the fastening members are attached to the front abdomen to form a pants shape, or the width direction of the back portion is formed. Both sides of the belt are formed in belts, and the belts are connected to each other around the wearer's waist, and the front abdomen is attached here to form a pants shape.

A material that constitutes the outer cover is not particularly limited. Nonwoven fabrics, woven fabrics, knitted fabrics, plastic films, laminates thereof, and the like can be used as materials for the outer cover. When fabric materials such as non-woven fabrics, woven fabrics, and knitted fabrics are used as the constituent material of the outer cover, examples of fibers constituting the fabric materials include synthetic fibers such as polyolefins, polyesters, polyamides, and polyurethanes, pulp, cotton, silk, and the like. of natural fibers may be used. When a plastic film is used as the constituent material of the outer cover, for example, synthetic resin such as polyolefin, polyester, polyamide, and polyurethane may be used. The outer cover may be liquid permeable or liquid impermeable.

The outer cover may have an absorber. If the outer cover has an absorbent body, even if urine or the like overflows from the inner pad, the overflowed urine or the like can be preferably absorbed by the outer cover. In this case, the outer cover preferably has a structure in which an absorber is arranged between a liquid-permeable top sheet and a liquid-impermeable back sheet. Liquid-impermeable side sheets may be provided on both sides of the liquid-permeable top sheet in the width direction, and part of the absorbent body may be arranged between the site sheet and the back sheet. The absorber disposed on the outer cover may be at least on the crotch portion of the outer cover, and may extend to the front abdomen and/or rear portion of the outer cover.

The inner pad is placed on the crotch portion of the outer cover, and may be placed so as to extend to the front abdomen and/or the rear portion of the outer cover. The shape of the inner pad includes a substantially rectangular shape, an oval shape, an hourglass shape, a gourd shape, and the like. The inner pad is preferably shorter in width than the outer cover, and shorter in the front-rear direction than the outer cover.

The inner pad is provided with an absorber. The inner pad preferably has a structure in which an absorber is arranged between a liquid-permeable top sheet and a liquid-impermeable back sheet. Liquid-impermeable side sheets may be provided on both sides of the liquid-permeable top sheet in the width direction, and part of the absorbent body may be arranged between the site sheet and the back sheet.

In the inner pad and outer cover, the top sheet serves as a sheet member arranged on the skin side of the absorbent body. Examples of top sheets include nonwoven fabrics formed from hydrophilic fibers such as cellulose, rayon, and cotton; A non-woven fabric formed from fibers in which the surfaces of hydrophobic fibers are hydrophilized with a surfactant can be used. Moreover, a woven fabric, a knitted fabric, a perforated plastic film, or the like may be used as the top sheet.

In the inner pad and the outer cover, the back sheet serves as a sheet member arranged on the non-skin surface side of the absorbent body. As the backsheet, for example, a nonwoven fabric formed from hydrophobic fibers such as polyolefin (e.g., polypropylene, polyethylene), polyester (e.g., PET), polyamide (e.g., nylon), plastic film, etc. can be used. A laminate of a nonwoven fabric and a plastic film may also be used as the backsheet.

When side sheets are provided on both sides of the top sheet in the width direction of the inner pad and the outer cover, sheet members that can be used as the back sheet can be used as the side sheets.

When a nonwoven fabric is used as the topsheet, backsheet or sidesheet, it is preferable to use a spunbonded nonwoven fabric, an air-through nonwoven fabric, a point-bonded nonwoven fabric, a melt-blown nonwoven fabric, an air-laid nonwoven fabric, an SMS nonwoven fabric, or the like.

The absorbents arranged in the inner pad and the outer cover are not particularly limited as long as they contain an absorbent material capable of absorbing excrement such as urine. As the absorber, for example, a molded body obtained by molding an absorbent material into a predetermined shape can be used, and the molded body is covered with a covering sheet such as a paper sheet (for example, tissue paper or thin paper) or a liquid-permeable nonwoven fabric sheet. It may be Examples of absorbent materials include hydrophilic fibers such as pulp fibers, and water-absorbing resins such as polyacrylic acid-based, polyaspartic acid-based, cellulose-based, starch-acrylonitrile-based, and the like. The absorbent material may also include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and heat-fusible fibers such as polyamide fibers. These heat-fusible fibers may be hydrophilized with a surfactant or the like in order to increase affinity with urine or the like.

The absorbent material preferably contains hydrophilic fibers in order to increase the rate of absorption of urine and the like. Moreover, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water absorbent resin. Therefore, the absorbent preferably contains hydrophilic fibers (especially pulp fibers) and a water absorbent resin. In this case, it is preferable to use, for example, an aggregate of hydrophilic fibers mixed with or sprinkled with a water absorbent resin.

The absorber may be a sheet-like absorber. Examples of sheet-like absorbent bodies include those formed so as to contain a water-absorbing resin between non-woven fabrics and not contain pulp fibers. The sheet-like absorbent body thus formed has a water-absorbing resin between the nonwoven fabrics, so that a high absorption capacity can be achieved. Moreover, since the sheet-like absorbent body does not have pulp fibers between the nonwoven fabrics, it can be formed thin without being bulky.

The sheet-like absorbent body may use water absorbent fibers as the absorbent material. Also in this case, the sheet-like absorbent body can be formed thin without being bulky. Absorbent fibers include fibers containing protonated or salted carboxyl groups. For example, water-absorbing fibers can be obtained by hydrolyzing acrylic fibers to convert nitrile groups contained in the acrylic fibers into carboxyl groups. At this time, the carboxyl groups contained in the water-absorbing fibers preferably form an alkali metal salt or an ammonium salt. Also, the water-absorbent fiber can be produced by immersing a hydrophilic fiber in acrylic acid to precipitate the acrylic acid on the fiber surface.

The sheet-like absorbent body is preferably used as an absorbent body for the outer cover, so that even if the inner pad is layered on the outer cover, bulkiness of the absorbent article in the thickness direction can be suppressed. Of course, a sheet-like absorbent may also be used for the absorbent of the inner pad, thereby further reducing the bulkiness of the absorbent article.

From a similar point of view, it is also preferable that the absorbent body of the outer cover (especially the molded body of absorbent material that constitutes the absorbent body) is provided with an opening or recess extending in the front-rear direction in the widthwise central portion of the outer cover. The opening or recess of the absorber of the outer cover may be formed in a shape elongated in the front-rear direction at a position including the center line in the width direction of the outer cover. The absorber of the outer cover in this case is not limited to a sheet-like absorber, and may contain hydrophilic fibers. By providing the absorbent body of the outer cover with such openings or recesses, the bulkiness of the absorbent article can be suppressed when the inner pad is overlapped on the outer cover. In addition, since the outer cover is recessed at the portion where the opening or recess of the absorber is formed, the inner pad can be stably and easily placed on the outer cover at a predetermined position.

The opening is provided through the absorber in the thickness direction. The recesses are formed, for example, by partially compressing the absorbent body or by partially reducing the basis weight of the absorbent body. In this case, the compressed portion of the absorbent body and the portion with reduced basis weight are formed as recesses. The concave portions of the absorbent body are preferably formed by partially reducing the basis weight of the absorbent body, which makes it easier to form the absorbent body into a recessed shape. In this case, the recesses are preferably formed so that the basis weight is 60% by mass or less (more preferably 50% by mass or less, and still more preferably 40% by mass or less) of the portion other than the recesses. . It is preferable that the concave portion is formed on the skin surface side of the absorber.

The widthwise length of the opening or recess of the outer cover absorber is preferably 5% or more, more preferably 8% or more, of the widthwise length of the narrowest portion of the outer cover absorber. , more preferably 10% or more, preferably 50% or less, more preferably 35% or less, and even more preferably 25% or less. The narrowest part of the absorbent body is the narrowest part in the width direction at the middle part when the absorbent body is divided into three parts in the front-rear direction, the front part, the rear part, and the middle part therebetween. means part. When the absorbent body is substantially rectangular, the width of the absorbent body is the narrowest in the front-rear direction. The length of the opening or recess in the front-rear direction is preferably 20% or more, more preferably 25% or more, even more preferably 30% or more, or 75% of the front-rear length of the absorbent body of the outer cover. The following is preferable, 70% or less is more preferable, and 65% or less is even more preferable. In addition, when the absorbent article is provided with an elastic member, the length described here refers to the state in which the elastic member is completely stretched (that is, the state in which the elastic member is removed or the elastic member is cut into small pieces. It means the length measured in the state where the contractile force of the member is not expressed).

The shape (planar shape) of the absorber is not particularly limited. The shape of the absorber may be appropriately determined depending on the application, and examples thereof include a substantially rectangular shape, an hourglass shape, a gourd shape, a battledore shape, and the like.

The inner pad and/or outer cover may have a leak-proof flap on the skin side. The leak-proof flaps are provided on both sides in the width direction of the inner pad or the outer cover so as to extend in the front-rear direction, thereby preventing lateral leakage of urine or the like. It is preferable that the leak-proof flap is provided with an elastic member extending in the front-rear direction, and the contractile force of the elastic member can promote the erection of the leak-proof flap.

The absorbent article is provided with non-slip portions on the non-skin surface side of the inner pad and on the skin surface side of the outer cover. In the present invention, the anti-slip portion provided on the non-skin surface side of the inner pad is referred to as "inner anti-slip portion", and the anti-slip portion provided on the skin side of the outer cover is referred to as "outer anti-slip portion". By providing the inner non-slip portion and the outer non-slip portion in this way, when the inner pad is placed on the skin surface side of the outer cover and used, the inner pad is less likely to shift relative to the outer cover, and the inner pad can be held in place. It becomes easy to place stably in the position of . On the other hand, when replacing the inner pad, the inner pad can be easily removed from the outer cover, which facilitates the replacement work of the inner pad.

The inner non-slip portion is exposed on the non-skin surface side of the inner pad. When the inner pad is constructed by disposing an absorbent body between the top sheet and the back sheet, the inner anti-slip portion is preferably provided on the non-skin surface side of the back sheet of the inner pad. The outer non-slip portion is exposed on the skin surface side of the outer cover. In the case where the outer cover is constructed by disposing an absorbent body between the top sheet and the back sheet, the outer non-slip portion is preferably provided on the skin surface side of the top sheet of the outer cover. It is preferable that the inner pad is not fixed to the outer cover. Therefore, it is preferable that the non-skin surface side of the inner pad, such as the back sheet of the inner pad, is not provided with a hook-and-loop fastener or an adhesive portion. Further, it is preferable that the skin surface side of the outer cover (excluding the fixing members provided on both sides in the width direction of the rear portion), for example, the top sheet of the outer cover, is not provided with a hook-and-loop fastener or an adhesive portion.

It is preferable that the inner non-slip portion is provided so as to overlap the absorber of the inner pad. By arranging the inner anti-slip part at a position overlapping the absorber of the inner pad, the inner anti-slip part can easily come into strong contact with the skin side of the outer cover, and the anti-slip effect of the inner pad can be enhanced.

The outer non-slip portion may be provided at a position overlapping the inner pad when the inner pad is placed on the skin surface side. The outer non-slip portion may be provided within a rectangular area formed by translating in the direction. The outer non-slip portion may be provided, for example, in the crotch portion of the outer cover, may be provided in the front abdomen and the rear portion of the outer cover, or may be provided in the front abdomen, the crotch portion, and the rear portion of the outer cover. good too.

When the outer cover is provided with an absorber, it is preferable that the outer non-slip portion is provided so as to overlap the absorber of the outer cover. By arranging the outer non-slip portion at a position overlapping the absorber of the outer cover, the outer non-slip portion is likely to come into strong contact with the non-skin surface side of the inner pad, and the slippage prevention effect of the inner pad can be enhanced. In addition, when the absorber of the outer cover has an opening or recess, it is preferable that the outer anti-slip portion is provided without overlapping the opening or recess.

Only one inner anti-slip portion may be provided, or a plurality of them may be provided, but preferably a plurality of inner anti-slip portions may be provided. It is preferable that a plurality of inner anti-slip portions be provided side by side in the front-rear direction and/or the width direction, for example. By providing the inner non-slip portion in this way, it is possible to enhance the anti-slip effect of the inner pad, and it becomes easier to ensure the fit of the inner pad to the wearer's crotch region.

Only one outer anti-slip portion may be provided, or a plurality of them may be provided, but preferably a plurality of outer anti-slip portions may be provided. It is preferable that a plurality of outer anti-slip portions be provided side by side in the front-rear direction and/or the width direction, for example. By providing the outer non-slip portion in this way, it is possible to enhance the effect of preventing the inner pad from slipping, and it becomes easier to ensure the fit of the outer cover to the wearer's crotch region.

It is preferable that one of the inner anti-slip portion and the outer anti-slip portion is provided extending in the front-rear direction, and the other of the inner anti-slip portion and the outer anti-slip portion is provided extending in the width direction. That is, it is preferable that one of the inner anti-slip portion and the outer anti-slip portion is elongated in the front-rear direction, and the other of the inner anti-slip portion and the outer anti-slip portion is elongated in the width direction. By providing the inner anti-slip portion and the outer anti-slip portion in this way, when the inner pad is placed on the skin surface side of the outer cover and used, the inner anti-slip portion easily comes into contact with the outer anti-slip portion. The anti-slip effect of the inner pad can be enhanced.

When the inner anti-slip portion and the outer anti-slip portion are provided as described above, the inner anti-slip portion and the outer anti-slip portion may be long in the front-rear direction and may be arranged side by side in the width direction, or may be long in the width direction. It is preferable that a plurality of them be arranged side by side in the front-rear direction. The length in the width direction of the inner anti-slip portion or the outer anti-slip portion that is long in the front-rear direction is preferably 1 mm or more, more preferably 3 mm or more, even more preferably 5 mm or more, and is preferably 30 mm or less, and more preferably 25 mm or less. It is preferably 20 mm or less, and more preferably 20 mm or less. The length of the inner anti-slip portion or the outer anti-slip portion that is long in the width direction is preferably 1 mm or more in the front-rear direction, more preferably 3 mm or more, even more preferably 5 mm or more, and is preferably 30 mm or less, and more preferably 25 mm or less. It is preferably 20 mm or less, and more preferably 20 mm or less. This makes it possible to enhance the fit of the inner pad or the outer cover to the wearer's crotch region while enhancing the anti-slip effect of the non-slip portion. The length of the inner anti-slip portion or the outer anti-slip portion that is long in the front-rear direction is preferably 20 mm or more, more preferably 25 mm or more, and even more preferably 30 mm or more. The length in the width direction of the inner anti-slip portion or the outer anti-slip portion that is long in the width direction is preferably 20 mm or more, more preferably 25 mm or more, and even more preferably 30 mm or more.

It is preferable that the inner anti-slip portion is provided extending in the front-rear direction, and the outer anti-slip portion is provided extending in the width direction. When the inner pad is placed on the skin side of the outer cover and worn, the inner pad is more likely to bend in the front-rear direction than in the width direction at the crotch portion of the wearer. At this time, if the inner anti-slip portion is provided so as to extend in the front-rear direction, the inner anti-slip portion tries to maintain a planar state in the front-rear direction against the curvature of the inner pad in the front-rear direction. On the other hand, since the outer non-slip portion extends in the width direction, the outer cover can be easily curved in the front-rear direction according to the shape of the wearer's crotch when the outer cover is worn. Therefore, the inner non-slip portion is likely to come into strong contact with the skin side of the outer cover, and the effect of preventing the inner pad from slipping can be enhanced.

When the inner anti-slip portion and the outer anti-slip portion are provided as described above, the length of the inner anti-slip portion in the front-rear direction is preferably longer than the length of the outer anti-slip portion in the width direction. For example, the length of the inner anti-slip portion in the front-rear direction is preferably at least twice the length of the outer anti-slip portion in the width direction, more preferably at least 3 times, preferably 20 times or less, and more preferably 15 times or less. Preferably, 10 times or less is more preferable.

When the inner anti-slip portion extends in the front-rear direction, the length in the front-rear direction of the inner anti-slip portion is preferably 30% or more, more preferably 50% or more, of the length in the front-rear direction of the inner pad. More preferably, 70% or more is even more preferable. Preferably, the inner anti-slip portion extends in the front-rear direction and is provided in plurality in the width direction, preferably on one side and the other side in the width direction.

Preferably, the outer anti-slip portion extends in the width direction and is provided in plurality in the front-rear direction. When the narrowest portion of the crotch portion of the outer cover is formed to have a predetermined length in the front-rear direction, the outer non-slip portion is positioned on the front side and rearward of the center of the narrowest portion of the crotch portion in the front-rear direction. preferably provided on each side. In this case, the outer anti-slip portion on the front side and the outer anti-slip portion on the rear side are preferably separated in the front-rear direction by 50 mm or more, more preferably 75 mm or more, and even more preferably 100 mm or more. It is also preferable to provide a plurality of outer anti-slip portions on the front side and to provide a plurality of outer anti-slip portions on the rear side.

It is preferable that the outer anti-slip portion on the front side is provided on the front abdomen and the outer anti-slip portion on the rear side is provided on the back portion. By providing the outer non-slip portion in this manner, the inner pad elongated in the front-rear direction can be stably placed on the skin surface side of the outer cover, and the absorption performance of the inner pad can be enhanced.

When a plurality of outer anti-slip portions are provided in the front-rear direction, the length of the inner anti-slip portion in the front-rear direction is preferably longer than the separation distance between the outer anti-slip portion on the front side and the outer anti-slip portion on the rear side. When the outer anti-slip portion is provided on the front abdomen and the back, the length of the inner anti-slip portion in the front-rear direction is longer than the distance between the outer anti-slip portion on the front abdomen and the outer anti-slip portion on the back. is preferred. As a result, when the inner pad is placed on the skin side of the outer cover, the inner anti-slip portion can be brought into contact with both the outer anti-slip portion on the front side and the outer anti-slip portion on the rear side, preventing the inner pad from slipping. It is possible to further enhance the stopping effect.

The inner anti-slip portion and the outer anti-slip portion can be composed of a resin layer. The resin layer preferably has elasticity (specifically, elasticity that can be exerted with a force equivalent to that of a human hand), and is preferably composed of an elastomer resin. Examples of elastomer resins include urethane resins, silicone resins, styrene resins (e.g., styrene-butadiene copolymer (SBR), styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butadiene-styrene block copolymer (SEBS), styrene-ethylene-propylene-styrene block copolymer (SEPS), etc.), acrylic resin, α-olefin resin, butadiene resin, vinyl chloride Examples include resins, vinyl acetate resins, natural rubbers, and the like.

The resin layer is preferably substantially non-adhesive. For example, the content of the tackifier component is preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1% by mass or less. Adhesives usually contain 10% by mass or more of a tackifying component in order to exhibit adhesiveness and stickiness, but the resin layer of the anti-slip portion does not contain a large amount of such a tackifying component. is preferred. Examples of the tackifying component include rosin-based resins, terpene-based resins, dicyclopentadiene resins, C5-based or C9-based hydrocarbon resins, and alicyclic hydrocarbon-based resins.

The inner anti-slip portion is preferably formed to swell on the non-skin surface side of the inner pad. The outer non-slip portion is preferably formed so as to swell on the skin surface side of the outer cover, for example, it is preferably formed so as to swell from the surface of the top sheet of the outer cover on the skin surface side. The height of the protrusion of the anti-slip portion is, for example, preferably 0.1 mm or more, more preferably 0.2 mm or more, still more preferably 0.3 mm or more, preferably 3.0 mm or less, and more preferably 2.0 mm or less. 1.0 mm or less is more preferable.

The durometer hardness A of the inner anti-slip portion and the outer anti-slip portion is preferably 90 or less, more preferably 80 or less, still more preferably 70 or less, preferably 20 or more, more preferably 25 or more, and 30 or more. is more preferred. As a result, the position fixing effect and the anti-slipping effect of the non-slip portion can be favorably exhibited. Durometer hardness A is measured according to JIS K 6253-3 (2012).

The inner anti-slip portion and the outer anti-slip portion preferably have a peel adhesive strength of less than 0.1N, more preferably less than 0.05N, and even more preferably less than 0.03N. The peel adhesive strength of the non-slip portion is measured according to the following method. According to JIS K 6854-2 (1999) "Adhesive-Peel Adhesion Strength Test Method (180 degree peel)", the integrated average load of the peel force is measured, and the average value of 10 tests is taken as the peel adhesion strength. used as However, the peeling speed (grip moving speed) is 300 mm/min. The test piece used for the measurement is a portion provided with an anti-slip portion (a plurality of anti-slip portions may be provided) cut out in a size of 100 mm × 10 mm, and the cut out test piece is cut out in a size of 150 mm × 25 mm. It is prepared by sticking to a base material and overlapping Kanakin No. 3 cotton cloth having the same size as the base material. The surface of the cut test piece opposite to the non-slip portion is attached to the base material, and Kanakin No. 3 cotton cloth is overlaid on the surface provided with the non-slip portion. Kanakin No. 3 cotton cloth used in JIS L 0803 "Dye fastness test" is used. If the size of the portion provided with the non-slip portion is less than 100 mm×10 mm, a plurality of portions are joined together to form a size of 100 mm×10 mm. The cut test piece and Kanakin No. 3 cotton cloth are pasted together by reciprocating a roller (SA-1003-B, manufactured by Tester Sangyo Co., Ltd., load 2 kgf, width 45 mm, diameter 95 mm) three times.

The inner non-slip portion and/or the outer non-slip portion may be colored other than white. As a result, the visibility of the inner non-slip portion and the outer non-slip portion is improved, and when the inner pad is placed on the skin side of the outer cover, the inner pad is positioned so that the inner non-slip portion and the outer non-slip portion are in contact with each other. It becomes easier to set on the skin side of the outer cover. In particular, the outer non-slip portion is preferably colored in a color other than white, which makes it easier to set the inner pad at an appropriate position on the skin surface side of the outer cover using the outer non-slip portion as a guide.

It is also preferable that the absorbent article is not provided with a leak-proof flap on the skin surface side of the outer cover. Leakage prevention flaps are usually provided on both sides in the width direction so as to extend in the front-rear direction. It is possible to reduce bulkiness in the crotch region of the wearer of the sexual article. The leak-proof flap of the outer cover can also function to prevent the inner pad from being displaced when the inner pad is placed on the skin side of the outer cover. Since the inner non-slip portion and the outer non-slip portion are provided as described above, the inner pad can be easily maintained at a predetermined position even if the outer cover is not provided with the leak-proof flap.

Next, configuration examples of the absorbent article of the present invention will be described with reference to the drawings. The invention is not limited to the embodiments shown in the drawings.

FIGS. 1 to 5 show an example of the structure of an absorbent article according to the present invention, in which an inner pad is placed on the skin side of a so-called tape-type outer cover. FIG. 1 shows a plan view of an absorbent article with an inner pad placed on the skin side of the outer cover, viewed from the skin side, and FIG. 2 shows the outer cover of the absorbent article shown in FIG. 3 is a plan view of the inner pad of the absorbent article shown in FIG. 1 as seen from the skin side, and FIG. 4 is a plan view of the absorbent article shown in FIG. FIG. 5 shows a plan view of the inner pad viewed from the non-skin surface side, and FIG. 5 shows a VV cross-sectional view of the absorbent article shown in FIG. 1 to 5, the arrow x represents the width direction, the arrow y represents the front-rear direction, and the direction perpendicular to the plane formed by the arrows x and y represents the thickness direction z.

The absorbent article 1 has an outer cover 11 and an inner pad 21 placed on the skin side of the outer cover 11 . The inner pad 21 is used by being placed on the skin side of the outer cover 11 in a non-bonded state with respect to the outer cover 11 .

The outer cover 11 has a front abdominal portion P, a rear portion Q, and a crotch portion R positioned therebetween in the front-rear direction y. When the absorbent article 1 is worn, the outer cover 11 is worn so that the front abdomen P and the rear portion Q cover the waist of the wearer. The outer cover 11 shown in the drawings is provided with fastening members 17 on both sides of the back portion Q in the width direction x, and fastening corresponding portions 18 are provided on the non-skin surface side of the front abdomen P. As shown in FIG. The fastening member 17 is configured by providing a fastener (for example, a hook/loop fastener or an adhesive) on a base sheet. The outer cover 11 can be worn in the form of a pair of pants by applying it to the wearer's crotch and joining the fasteners of the fastening members 17 to the fastening corresponding portions 18 .

The outer cover 11 is constructed by disposing an absorbent body 14 between a liquid-permeable top sheet 12 and a liquid-impermeable back sheet 13 . The absorber 14 of the outer cover 11 functions to prevent leakage of urine or the like to the outside when urine or the like excreted by the wearer overflows the inner pad 21 .

The inner pad 21 is placed at least on the crotch portion R of the outer cover 11, and is provided extending from the crotch portion R of the outer cover 11 to the front abdomen P and the back portion Q in the drawing. The inner pad 21 has an absorbent body 24 disposed between a liquid-permeable top sheet 22 and a liquid-impermeable back sheet 23, and extends in the front-rear direction y on both sides of the top sheet 22 in the width direction x. A leaktight flap 26 is provided. The leak-proof flap 26 is provided with a flap elastic member 27 extending in the front-rear direction y, and when the absorbent article 1 is used, the contractile force of the flap elastic member 27 promotes the rise of the leak-proof flap 26 .

The inner pad 21 receives urine or the like excreted by the wearer and absorbs it with the absorber 24 . The leak-proof flap 26 of the inner pad 21 functions to prevent lateral leakage of urine or the like excreted by the wearer and received by the inner pad 21 .

The outer cover 11 is provided with an outer non-slip portion 15 on the skin side, and the inner pad 21 is provided with an inner non-slip portion 25 on the non-skin side. As a result, when the absorbent article 1 is used with the inner pad 21 placed on the skin surface side of the outer cover 11, the inner pad 21 is less likely to shift with respect to the outer cover 11, and the inner pad 21 is held in place. It can be placed stably. On the other hand, since the inner pad 21 can be easily removed from the outer cover 11 when replacing the inner pad 21, the replacement work of the inner pad 21 is facilitated.

The inner anti-slip portion 25 is preferably provided so as to overlap with the absorber 24 of the inner pad 21 . Moreover, it is preferable that the outer anti-slip portion 15 is provided so as to overlap the absorber 14 of the outer cover 11 . As a result, the inner anti-slip portion 25 and the outer anti-slip portion 15 are likely to come into strong contact with each other, and the anti-slip effect of the inner pad 21 can be enhanced.

It is preferable that the inner anti-slip portion 25 is provided extending in the front-rear direction y, and the outer anti-slip portion 15 is provided extending in the width direction x. By providing the inner anti-slip portion 25 and the outer anti-slip portion 15 in this manner, the inner anti-slip portion 25 and the outer anti-slip portion 15 are more likely to come into contact with each other, and the anti-slip effect of the inner pad 21 can be enhanced. . In particular, when the absorbent article 1 is worn, the outer cover 11 is easily curved in the front-rear direction y according to the shape of the wearer's crotch region, whereas the inner pad 21 has the inner non-slip portion 25. By extending in the front-rear direction y, the inner anti-slip portion 25 tends to be in a flat state in the front-rear direction y, so that the inner anti-slip portion 25 tends to come into strong contact with the skin surface side of the outer cover 11, and the inner pad 21 can enhance the anti-slip effect.

The absorbent body 14 of the outer cover 11 is preferably provided with an opening 16 extending in the front-rear direction y at the central portion of the outer cover 11 in the width direction x. Since the opening 16 is provided in the absorbent body 14 of the outer cover 11, the outer cover 11 is recessed at the opening 16 portion of the absorbent body 14 when the inner pad 21 is overlapped on the outer cover 11 and used. , the inner pad 21 can be stably and easily placed on the outer cover 11 at a predetermined position. It should be noted that the outer anti-slip portion 15 is preferably provided without overlapping the opening 16, so that the outer anti-slip portion 15 can easily come into strong contact with the inner pad 21, thereby enhancing the effect of preventing the inner pad 21 from slipping. can be done.

It is preferable that leg elastic members 19 extending in the front-rear direction y are provided at both ends of the outer cover 11 in the width direction x. Gathers are formed around the wearer's legs by the leg elastic members 19, and the fit of the outer cover 11 around the legs can be enhanced.

The outer cover 11 is preferably provided with a waist elastic member 20 extending in the width direction x at the end in the front-rear direction y. The waist elastic member 20 forms waist gathers along the waist of the wearer, and prevents leakage of urine and the like from the abdomen side and the back side.

1: Absorbent article 11: Outer cover 12, 22: Top sheet 13, 23: Back sheet 14, 24: Absorber 15: Outer non-slip part 16: Opening 17: Fastening member 18: Fastening corresponding part 19: Leg Part elastic member 20: Waist elastic member 21: Inner pad 25: Inner anti-slip portion 26: Leakage prevention flap 27: Flap elastic member

Claims (9)

An absorbent article having a front-rear direction and a width direction, and having an outer cover and an inner pad placed on the skin surface side of the outer cover,
The outer cover has a front abdominal portion, a rear back portion, and a crotch portion positioned therebetween in the front-rear direction, and is worn so that the front abdominal portion and the rear back portion cover the waist of the wearer,
The inner pad is placed on the crotch portion of the outer cover,
The outer cover includes an absorbent body between a liquid-permeable top sheet and a liquid-impermeable back sheet, and an outer non-slip portion made of a non-adhesive resin layer on the skin side,
1. An absorbent article according to claim 1, wherein said inner pad includes an absorbent body, and an inner non-slip portion made of a non-adhesive resin layer is provided on a non-skin surface side of said inner pad. One of the inner anti-slip portion and the outer anti-slip portion is provided extending in the front-rear direction, and the other of the inner anti-slip portion and the outer anti-slip portion is provided extending in the width direction. The absorbent article according to claim 1. 2. The absorbent article according to claim 1, wherein the inner anti-slip portion is provided extending in the front-rear direction, and the outer anti-slip portion is provided extending in the width direction. The outer anti-slip portion is provided on the front abdomen and the back, respectively,
4. The absorbent article according to claim 3, wherein the length of the inner anti-slip portion in the front-rear direction is longer than the distance between the outer anti-slip portion on the front abdomen and the outer anti-slip portion on the back. The absorbent article according to any one of claims 1 to 4, wherein the inner anti-slip portion is provided so as to overlap the absorbent body of the inner pad. The absorbent article according to any one of claims 1 to 5, wherein the outer anti-slip portion is provided so as to overlap the absorbent body of the outer cover. The absorber of the outer cover is provided with an opening or recess extending in the front-rear direction at a center portion in the width direction of the outer cover,
The absorbent article according to any one of claims 1 to 6, wherein the outer anti-slip portion is provided so as not to overlap the opening or recess. The absorbent article according to any one of claims 1 to 7, wherein the outer anti-slip portion is colored other than white. The absorbent article according to any one of claims 1 to 8, wherein the skin surface side of the outer cover is not provided with leakproof flaps extending in the front-rear direction on both sides in the width direction.

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