JP7169221B2 - absorbent article - Google Patents

Description

The present invention relates to absorbent articles such as disposable diapers, urine pads, light incontinence pads, and sanitary napkins.

Absorbent articles are provided with various elastic members in order to prevent leakage of excrement such as urine and improve fit to the wearer. For example, a rising flap is provided on the skin side of the absorbent article to prevent lateral leakage of urine or the like, and the rising flap is provided with a flap elastic member so that the rising flap stands up when worn. Further, when the absorbent article is a disposable diaper, leg elastic members are usually provided along the wearer's legs in order to improve the fit around the wearer's legs. As a result, leakage of urine or the like from around the wearer's legs can be prevented when the disposable diaper is worn.

The elastic member provided in this way is required to have a certain amount of tension (contraction force) in order to exhibit a predetermined function. However, when the elastic member is installed in such a manner, the elastic member may come into relatively strong contact with the wearer's skin. I might remember. In order to reduce the contact of the elastic member against the wearer's skin, Patent Document 1 discloses that a tow spread body of cellulose acetate fibers is directly or indirectly fixed and expands and contracts in one direction together with the spread body. Disclosed is a gather member for a disposable diaper that includes an elastic member.

JP 2018-059244 A

According to the gather member of Patent Document 1, by arranging the tow spread body of cellulose acetate fiber around the elastic member (stretchable member), the contact of the elastic member against the wearer's skin can be weakened. On the other hand, since the elastic member is directly or indirectly fixed to the spread tow body of cellulose acetate fiber, the contractile force of the elastic member is canceled by the spread tow body of cellulose acetate fiber, and the effect of providing the elastic member is may not be fully demonstrated.

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 in which elastic members are provided in the rising flaps and around the legs, and in which the functions provided by the elastic members are preferably exhibited. Another object of the present invention is to provide an absorbent article in which contact with the wearer's skin due to the elastic member is reduced and which is excellent in wearing feeling.

The absorbent article of the present invention that can solve the above-mentioned problems is an absorbent article having a width direction and a front-rear direction and provided with a rising flap on the skin surface side, wherein the rising flap is a rising flap. It has a base portion that serves as a starting point and a free end that serves as a rising tip, and is formed by folding back a flap-forming sheet at the free end. A flap elastic member extending in the front-rear direction is provided between them, the flap elastic member is attached to one portion of the flap forming sheet, and an acetate fiber aggregate is provided between the flap elastic member and the other portion of the flap forming sheet. It has its own characteristics.

In the absorbent article constructed as described above, the acetate fiber assembly is disposed between the folded flap forming sheets overlapping the flap elastic members, so that the flap elastic members are strong against the wearer's skin. It becomes difficult to hit, and the rising flap can be given cushioning properties. On the other hand, since the flap elastic member is attached to the flap forming sheet, the contractile force of the flap elastic member is directly transmitted to the flap forming sheet, so that the rising flap can be suitably raised. Therefore, in the absorbent article according to the present embodiment, the rising flap can stand up high toward the wearer's skin, and the effect of preventing leakage of urine and the like can be enhanced, and contact with the wearer's skin can be alleviated. Since it can be done, it becomes excellent in a feeling of wearing.

For example, the rising flap is folded back along a folding line extending in the front-rear direction between the base and the free end. In the rising flap configured in this way, the flap elastic member and the acetate fiber assembly are provided at the tip of the flap between the folding line and the free end, and the other part of the flap forming sheet is in the collapsed state of the rising flap, It is preferably positioned on the skin surface side of the tip of the flap. As a result, when the rising flap is raised, the flap elastic member easily comes into contact with the wearer's skin via the acetate fiber assembly, and the cushioning property against the wearer's skin is enhanced.

In the rising flap formed as described above, it is preferable that the acetate fiber assembly is not provided between the base of the rising flap and the folding line. This makes it easy for the rising flap to rise high toward the wearer's skin. Also, the rising flaps can be folded thinly before using the absorbent article.

The riser flaps may be unfolded between the base and the free end. In this case, it is preferable that one portion of the flap-forming sheet is positioned on the skin surface side of the rising flap when the rising flap is laid down. In the rising flap configured in this way, the higher the rising flap rises, the easier it is for the inner surface of the rising flap in the width direction to come into contact with the wearer's skin in the standing state. Therefore, one part of the flap forming sheet to which the flap elastic member is attached is positioned on the skin surface side of the rising flap when the rising flap is laid down. The flap elastic member is likely to come into contact with the wearer's skin via the acetate fiber assembly.

In the riser flap formed as described above, the acetate fiber assembly is preferably spaced from the base of the riser flap, and preferably closer to the free end than to the base. This makes it easier for the rise flap to rise higher toward the wearer's skin.

The flap elastic member is attached to one portion of the flap forming sheet with an adhesive, and the acetate fiber assembly is adhered to the other portion of the flap forming sheet at an adhesion region provided on the other portion of the flap forming sheet. is adhered by an adhesive applied to the flap elastic member, and other portions are preferably not adhered to one portion of the flap forming sheet. It is also preferred that the acetate fiber assembly is adhered to the other portion of the flap-forming sheet and not adhered to the one portion of the flap-forming sheet. As a result, the contractile force of the flap elastic member is more likely to be transmitted to the flap forming sheet at the one portion sandwiching the free end of the flap forming sheet, and the rising of the rising flap is less likely to be hindered by the acetate fiber assembly.

Preferably, the acetate fiber assembly extends forward from the front end of the flap elastic member and extends rearward from the rear end of the flap elastic member. This makes it easier to prevent the flap elastic member from strongly contacting the wearer's skin. The acetate fiber assembly may extend rearward within 10 mm from the front end of the rising flap, and may extend forward within 10 mm from the rear end of the rising flap.

The present invention also provides an absorbent article having a width direction and a front-rear direction and provided with an absorbent body, wherein the first sheet and the non-skin surface side thereof are arranged outside in the width direction of the absorbent body. leg elastic members are provided between the second sheet, the leg elastic members are attached to the second sheet, and an acetate fiber assembly is arranged between the leg elastic members and the first sheet also provide.

In the absorbent article constructed as described above, the acetate fiber assembly overlaps the leg elastic member and is arranged around the leg of the absorbent article, so that the leg elastic member does not come into strong contact with the wearer's skin. As a result, cushioning properties can be imparted to the leg-surrounding portion. On the other hand, since the leg elastic members are attached to the second seat, the contractile force of the leg elastic members is directly transmitted to the second seat, and gathers can be preferably formed around the legs. The absorbent article of this embodiment can enhance the fit around the wearer's legs and can reduce contact with the wearer's skin, so that the absorbent article is excellent in wearing comfort.

The leg elastic members are attached to the second sheet by an adhesive, the acetate fiber assembly is adhered to the first sheet at the adhesive area provided on the first sheet, and the second sheet is attached to the leg elastic members. It is preferable that the second sheet is adhered by the applied adhesive and the other portions are not adhered to the second sheet. It is also preferred that the acetate fiber assembly is adhered to the first sheet and not adhered to the second sheet. This makes it easier for the contractile force of the leg elastic member to be transmitted to the second sheet, and the formation of gathers around the leg is less likely to be hindered by the acetate fiber assembly.

The absorbent article having leg portions as described above can be suitably applied to tape-type disposable diapers. In this case, the tape-type disposable diaper is provided with a liquid-permeable top sheet on the skin side of the absorbent body, and a liquid-impermeable back sheet on the non-skin side of the absorbent body. A side seat is provided on both sides in the direction, and the side seat can be the first seat, and the back seat can be the second seat. In the case of applying the absorbent article having the leg portions as described above to a pants-type disposable diaper, the pants-type disposable diaper has an absorbent body disposed in the crotch portion of the pants-shaped exterior member. The exterior member has an outer layer sheet and an inner layer sheet provided on the skin surface side thereof, the inner layer sheet being the first sheet, and the outer layer sheet being the second sheet.

In the absorbent article of the present invention, the contractile force of the flap elastic member allows the rising flap to stand up toward the wearer's skin, thereby enhancing the effect of preventing leakage of urine and the like. Since contact with the wearer's skin can be alleviated, the feeling of wearing is excellent. The absorbent article of the present invention can improve the fit around the wearer's legs by the contractile force of the leg elastic members, and the acetate fiber assembly allows the leg elastic members to contact the wearer's skin. can be alleviated, the wearer has an excellent feeling of wearing.

As an example of the absorbent article of this invention, the top view which looked at the light incontinence pad from the top sheet side is represented. 2 shows a II-II cross-sectional view of the absorbent article shown in FIG. 1; FIG. As an example of the absorbent article of the present invention, a plan view of a urine pad viewed from the top sheet side is shown. 4 represents a cross-sectional view of the absorbent article shown in FIG. 3 taken along line IV-IV. As an example of the absorbent article of the present invention, a plan view of a tape-type disposable diaper viewed from the top sheet side is shown. 6 shows a VI-VI cross-sectional view of the absorbent article shown in FIG. 5. FIG. As an example of the absorbent article of the present invention, a perspective view of a pants-type disposable diaper is shown. FIG. 8 is a plan view of the absorbent article (disposable diaper) shown in FIG. 7 in which the front and back portions are unjoined and unfolded, as seen from the skin surface side; 9 shows a cross-sectional view of the absorbent article shown in FIG. 8 taken along line IX-IX.

The absorbent article of the present invention is provided with an elastic member around the wearer's crotch or leg. Absorbent articles are provided with various elastic members in order to prevent leakage of excrement such as urine and improve fit to the wearer. For example, on the skin side of the absorbent article, there are cases where a rising flap is provided to prevent lateral leakage of urine, etc., but the rising flap has a flap elastic member so that the rising flap stands up when worn. be provided. Further, when the absorbent article is a disposable diaper, leg elastic members are usually provided along the wearer's legs in order to improve the fit around the wearer's legs. As a result, leakage of urine or the like from around the wearer's legs can be prevented when the disposable diaper is worn.

When the absorbent article is worn, the flap elastic members and the leg elastic members act to raise the rising flaps against the force of gravity and to raise the portions around the legs of the wearer. As a result, the rising flaps and the portions around the wearer's legs are in contact with the wearer's skin, and urine and the like can be prevented from leaking. In order to properly exhibit such functions, the flap elastic member and the leg elastic member are attached to the absorbent article in a stretched state, and at this time, it is required that a certain amount of tension (contraction force) is applied to the elastic member. . However, when the elastic member is installed in such a manner, the elastic member may come into relatively strong contact with the wearer's skin. It may be tightened or cause discomfort.

The present invention relates to an absorbent article provided with flap elastic members and leg elastic members as described above. The elastic member and the leg elastic member are configured so as not to strongly contact the wearer's skin. Hereinafter, the absorbent article of the present invention will be described in detail.

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.

Absorbent articles include disposable diapers, urine pads, light incontinence pads, sanitary napkins, and the like. The shape of the absorbent article is not particularly limited. When the absorbent article is a urine pad, a light incontinence pad, or a sanitary napkin, the shape of the absorbent article may be substantially rectangular, oval, hourglass-shaped, gourd-shaped, or the like.

When the absorbent article is a disposable diaper, the disposable diaper is composed of, for example, a front belly portion, a back portion, and a crotch portion provided therebetween and provided with an absorbent body. The front abdomen corresponds to the part that is brought into contact with the abdomen of the wearer when wearing the disposable diaper, and the back part corresponds to the part of the wearer that is brought into contact with the back of the wearer when wearing the disposable diaper. The crotch portion is positioned between the front abdomen and the rear portion and corresponds to the part that is applied to the wearer's crotch.

The disposable diaper may be a tape-type disposable diaper or a pants-type disposable diaper. Tape-type disposable diapers are configured, for example, by providing fastening members at both ends in the width direction of the back portion, and by fastening the fastening members to the front abdomen, the diaper is formed into a pants shape when worn. can be done. A pants-type disposable diaper has a pants-like shape with a waist opening and a pair of leg openings, and is formed in a pants-like shape before being worn.

The absorbent article preferably has a structure in which an absorbent body is arranged between the top sheet and the back sheet. When the absorbent article is a disposable diaper, the disposable diaper is absorbed between the topsheet and the backsheet, e.g. It can be configured with an absorbent body having a body disposed thereon. The disposable diaper may also be formed such that the laminate with the absorbent disposed between the topsheet and the backsheet has a front and back portion and a crotch portion positioned therebetween.

The top sheet is a sheet member arranged on the skin side of the absorbent body, and is provided so as to face the wearer's skin when the absorbent article is worn. The topsheet is preferably liquid permeable. 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.

The back sheet is a sheet member arranged on the non-skin surface side of the absorbent body, and is preferably liquid-impermeable. As the back sheet, a nonwoven fabric formed from hydrophobic fibers such as polyolefin (eg, polypropylene, polyethylene), polyester (eg, PET), polyamide (eg, nylon), plastic film, or the like can be used. A laminate of a nonwoven fabric and a plastic film may also be used as the backsheet.

The exterior member may be liquid-permeable or liquid-impermeable, and a sheet material that can be used for the top sheet and the back sheet can be used. The exterior member is preferably constructed by laminating an outer layer sheet on an inner layer sheet, and the inner layer sheet and the outer layer sheet may be liquid-permeable or liquid-impermeable.

When a nonwoven fabric is used as each sheet material described above, 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 absorber is not particularly limited as long as it contains 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 is used, or the molded body is covered with a covering sheet such as a paper sheet (eg, tissue paper or thin paper) or a liquid-permeable nonwoven fabric sheet. can use things. Examples of absorbent materials include hydrophilic fibers such as pulp fibers, and water absorbent resins such as polyacrylic acid-based, polyaspartic acid-based, cellulose-based, and starch-acrylonitrile-based materials. 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 realized. 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 is formed thin and not 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 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.

A rising flap is preferably provided on the skin side of the absorbent article. Side leakage of urine or the like is prevented by providing the rising flap. It is preferable that the rising flap is provided with a flap elastic member extending in the front-rear direction, and the contractile force of the flap elastic member facilitates the rising of the rising flap.

The rising flap has a base that serves as a starting point for rising and a free end that serves as a leading edge of the rising, and a flap elastic member is provided between the base and the free end. The base of the rising flap may be joined to the top sheet, both sides in the width direction may be joined to the back sheet folded back toward the skin side of the absorbent body, or both of them may be joined. The rising flap is formed so that the front end and the rear end are joined to the top sheet and/or the back sheet, and a flap elastic member is provided between the front end and the rear end so that it can stand up. preferably.

The rising flap can be composed of a flap forming sheet, and it is preferable that the rising flap is formed by folding back the flap forming sheet at the free end, and the flap elastic member is arranged between the folded flap forming sheets. That is, it is preferable that the flap elastic member is provided between one portion and the other portion sandwiching the free end of the flap forming sheet folded back at the free end. The flap-forming sheet can be composed of a liquid-impermeable plastic film, a liquid-impermeable nonwoven fabric, or the like, and a sheet material that can be used for the back sheet can be used. The flap elastic member is preferably provided at least in an intermediate portion when the rising flap is divided in the longitudinal direction into three equal parts, a front side portion, a rear side portion, and an intermediate portion therebetween. More preferably, it is provided over the rear side portion.

The flap forming sheet may be formed by side sheets provided on both sides in the width direction of the top sheet. In this case, the side sheets are joined to the top sheet at the side joints, and the portions of the side sheets inward in the width direction from the side joints can serve as the flap forming sheets.

From the standpoint of preventing leakage of urine or the like, the rising flap preferably rises as high as possible toward the wearer's skin. However, in this case, the portion of the rising flap provided with the flap elastic member tends to come into strong contact with the wearer's skin, leading to a decrease in wearing comfort.

Therefore, in the absorbent article according to one embodiment of the present invention, the flap elastic member is attached to one portion sandwiching the free end of the flap forming sheet folded back at the free end, and the flap elastic member and the other portion of the flap forming sheet are attached. An acetate fiber assembly is provided between them. Acetate fiber aggregates can be formed as soft as natural cellulose fibers such as cotton, and can be formed to be much bulkier than cellulose fibers, resulting in excellent elastic recovery. Therefore, by overlapping the acetate fiber assembly with the flap elastic member and arranging it between the folded flap forming sheets, the flap elastic member does not come into strong contact with the wearer's skin, and the rising flap is provided with cushioning properties. be able to. On the other hand, since the flap elastic member is attached to the flap forming sheet, the contractile force of the flap elastic member is directly transmitted to the flap forming sheet, so that the rising flap can be suitably raised. The rising flap formed in this way can stand up high toward the wearer's skin, and can enhance the effect of preventing leakage of urine, etc., and can reduce contact with the wearer's skin. It will be excellent in feeling.

Two types of acetate fibers, cellulose diacetate fibers and cellulose triacetate fibers, are widely used, but it is preferable to use diacetate fibers as the acetate fibers. Cellulose diacetate has an average of 2.22 or more and less than 2.76 hydroxyl groups among the three hydroxyl groups contained in the repeating units of cellulose anhydroglucose that are acetylated, that is, the degree of esterification is 2. 0.22 or more and less than 2.76.

The acetate fiber assembly is preferably formed from long fibers oriented in the front-rear direction. Specifically, it is preferable that the acetate fibers constituting the acetate fiber aggregate are composed of long fibers and the long fibers are oriented in the front-rear direction. As a result, when gathers are formed in the rising flap by the contractile force of the flap elastic member, the acetate fibers are bent or folded in the front-rear direction to increase the bulk of the acetate fiber assembly, thereby enhancing the cushioning properties of the rising flap. can be done.

Acetate fibers are preferably used as bundles of long fibers (filament bundles). For example, an acetate fiber aggregate is formed from a tow and sandwiched between flap-forming sheets folded back at the free ends in this state, or an acetate fiber aggregate is used as tow-opened fibers to form a flap-forming sheet folded back at the free ends. can be sandwiched between The long fiber length of the acetate fiber is preferably 5 cm or longer, more preferably 10 cm or longer, and even more preferably 15 cm or longer. The long fibers of the acetate fiber may extend continuously over the whole length of the acetate fiber assembly in the front-rear direction.

Although the fineness of the acetate fiber is not particularly limited, it is preferably 0.1 dtex to 10 dtex from the viewpoint of having sufficient strength for use.

The acetate fiber assembly may contain acetate fibers as a main component, and may contain fibers other than acetate fibers. The acetate fiber aggregate preferably contains acetate fibers at a rate of 50% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, and even more preferably 90% by mass or more. It is particularly preferable that the acetate fiber assembly is composed only of acetate fibers as a fiber component. On the other hand, the flap-forming sheet preferably does not contain acetate fibers.

The acetate fiber assembly is preferably provided in at least part of the intermediate portion when the rising flap is divided into three equal parts in the front-rear direction, a front side portion, a rear side portion, and an intermediate portion therebetween. The acetate fiber assembly may be provided over the entire intermediate portion of the rise flap, or may be provided from the intermediate portion to the front and/or rear sides. The acetate fiber assembly preferably has a length of, for example, 5 cm or more in the front-rear direction, more preferably 10 cm or more, and even more preferably 15 cm or more. The length of the acetate fiber assembly described here is measured in a state in which the elastic member does not exhibit contractile force, for example, by cutting the elastic member arranged in the absorbent article into small pieces. Various length measurements in the present invention shall be performed in the same manner. The width of the acetate fiber assembly is, for example, preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more, and preferably 30 mm or less, more preferably 25 mm or less, and even more preferably 20 mm or less.

The flap elastic member is preferably attached to the flap forming sheet in a stretched state. As a result, the contraction force of the flap elastic member makes it easier for the rising flap to stand up. The flap elastic member is preferably attached to the flap forming sheet at an extension ratio of 1.2 times or more and 5.0 times or less, more preferably 1.5 times or more, further preferably 1.8 times or more, and 4.0 times or less is more preferable, and 3.5 times or less is even more preferable. The expansion ratio described here is 1.0 times in the non-expanded state.

As the flap elastic member, elastic stretchable materials such as polyurethane thread, polyurethane film, natural rubber, etc., which are used in ordinary absorbent articles, can be used. It should be noted that similar elastic stretchable materials can be used for various elastic members described below.

The flap elastic member is preferably attached to one portion of the flap forming sheet sandwiching the free end with an adhesive. As the adhesive, a hot-melt adhesive is preferably used, and a rubber-based hot-melt adhesive is more preferably used. In addition, it is preferable that the flap elastic member is not attached to the other portion sandwiching the free end of the flap forming sheet in the portion overlapping the acetate fiber assembly.

The acetate fiber assembly is provided between the flap elastic member and the other portion of the flap forming sheet so as to overlap at least a portion of the flap elastic member. At this time, the acetate fiber assembly is preferably adhered to the other portion of the flap-forming sheet. Specifically, the acetate fiber assembly is preferably bonded to the other portion of the flap-forming sheet in the bonding region provided on the other portion of the flap-forming sheet. As a result, the acetate fiber assembly can be firmly fixed at a predetermined position on the flap-forming sheet even if the gathers of the rising flap expand and contract in the front-rear direction due to the expansion and contraction of the flap elastic member. It is preferable that the bonding region where the acetate fiber assembly is bonded to the other portion of the flap-forming sheet has a predetermined width and is provided continuously or intermittently in the front-rear direction. The width of the adhesive region is preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more, and preferably 30 mm or less, more preferably 25 mm or less, and even more preferably 20 mm or less. When the adhesive region is intermittently provided in the front-rear direction, the length of the intermittent portion in the front-rear direction is preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 20 mm or less. Also, the bonding region preferably exists at least within 30 mm rearward from the front end of the acetate fiber assembly, more preferably within 20 mm, even more preferably within 10 mm, and within 30 mm forward from the rear end of the acetate fiber assembly. preferably within 20 mm, and even more preferably within 10 mm.

On the other hand, it is preferable that the acetate fiber assembly is not adhered to the one portion of the flap-forming sheet sandwiching the free end, or adhered to the one portion only in a limited portion. In the latter case, the acetate fiber assembly is bonded to one portion of the flap forming sheet by the adhesive applied to the flap elastic member, and the other portion is not bonded to one portion of the flap forming sheet. preferable. As a result, the contractile force of the flap elastic member is more likely to be transmitted to the flap forming sheet at the one portion sandwiching the free end of the flap forming sheet, and the rising of the rising flap is less likely to be hindered by the acetate fiber assembly.

It is preferable that the acetate fiber assembly is provided so as to overlap the entire length of the flap elastic member in the front-rear direction. More preferably, the acetate fiber assembly is provided so as to extend forward from the front end of the flap elastic member and to extend rearward from the rear end of the flap elastic member. This makes it easier to prevent the flap elastic member from strongly contacting the wearer's skin. The acetate fiber assembly may be provided over substantially the entire front-rear direction of the rising flap, for example, it extends rearward within 10 mm from the front end of the rising flap, and forward from the rear end of the rising flap. may extend up to a range of 10 mm or less.

The rising flap may face the skin side of the absorbent article either on one side or on the other side of the flap-forming sheet. Preferably, the rising flap is formed so that the other portion of the flap-forming sheet having a higher cushioning property comes into contact with the wearer's skin when the rising flap is raised. In other words, the rising flap is preferably formed so that the other portion sandwiching the free end of the flap-forming sheet comes into contact with the wearer's skin. This will be explained with reference to FIGS. 1 to 4. FIG. It should be noted that the present invention is not limited to the embodiments shown in the drawings.

FIGS. 1 and 2 show a configuration example of a light incontinence pad as the first embodiment of the absorbent article of the present invention, and FIGS. 3 and 4 show the second embodiment of the absorbent article of the present invention. A configuration example of a urine pad is shown as a mode. FIG. 1 shows a plan view of the absorbent article (light incontinence pad) viewed from the skin side, FIG. 2 shows a II-II cross-sectional view of the absorbent article shown in FIG. 1, and FIG. 4 shows a plan view of the absorbent article (urinary pad) viewed from the skin surface side, and FIG. 4 shows a cross-sectional view of the absorbent article shown in FIG. 3 taken along line IV-IV. In the drawings, arrow x represents the width direction of the absorbent article, arrow y represents the front-rear direction of the absorbent article, and arrow z represents the thickness direction of the absorbent article.

The absorbent article 1 (1A, 1B) has a top sheet 2, a back sheet 3, and an absorbent body 4 provided therebetween. The top sheet 2 is arranged on the skin side of the absorbent body 4, and the back sheet 3 is arranged on the non-skin side of the absorbent body 4. - 特許庁Excrement that permeates the top sheet 2 is accommodated by the absorbent body 4 . The back sheet 3 prevents excrement from leaking to the outside. In the absorbent article 1A shown in FIGS. 1 and 2, a mount 5 is further provided between the backsheet 3 and the absorbent body 4, and the mount 5 can improve the shape retention of the absorbent article 1A. . The mount 5 can be made of crepe paper or non-woven fabric. Mounting paper 5 may not be provided.

A rising flap 6 is provided on the skin side of the absorbent article 1 . The rising flap 6 has a base portion 10 that serves as a starting point for rising and a free end 11 that serves as a leading end of the rising. The rising flap 6 is formed by folding back the flap forming sheet 7 at the free end 11, as shown in FIGS. In the drawing, the flap forming sheet 7 is joined to the top sheet 2 at the base portion 10 and further extends outward in the width direction x to overlap the back sheet 3 .

The rising flap 6 is provided with a flap elastic member 8 between one portion 7A and the other portion 7B sandwiching the free end 11 of the folded flap forming sheet 7 . The flap elastic member 8 is attached to the one portion 7A of the flap forming sheet 7 folded back at the free end 11, and the acetate fiber assembly 9 is provided between the flap elastic member 8 and the other portion 7B of the flap forming sheet 7. The raised flap 6 formed in this way can be preferably raised toward the wearer's skin, and can reduce the contact with the wearer's skin, so that the wearing feeling is excellent.

In the flap forming sheet 7, the side to which the flap elastic member 8 is attached across the free end 11 is the one portion 7A. The base portion 10 of the rising flap 6 may be provided on the one portion 7A of the flap forming sheet 7, may be provided on the other portion 7B, or may be provided on both. In the absorbent article 1A, the base portion 10 is formed on the other portion 7B of the flap forming sheet 7, and in the absorbent article 1B, the base portion 10 is formed on the one portion 7A of the flap forming sheet 7.

The absorbent article 1A and the absorbent article 1B have different cross-sectional shapes of the rising flaps 6 in the width direction x, and as a result, the preferred arrangement of the flap elastic members 8 and the acetate fiber aggregates 9 differs between the two. In the absorbent article 1A, the rising flap 6 is folded back along the folding line 12 extending in the front-rear direction y between the base portion 10 and the free end 11, and is the portion between the folding line 12 and the free end 11. A flap elastic member 8 and an acetate fiber assembly 9 are provided at the flap distal end portion 13 . In the absorbent article 1A thus formed, the other portion 7B of the flap forming sheet 7 is positioned on the skin surface side of the tip portion 13 of the flap when the rising flap 6 is laid down, that is, when the rising flap 6 is folded. preferably. As a result, when the rising flap 6 is raised, the flap elastic member 8 easily comes into contact with the wearer's skin via the acetate fiber assembly 9, thereby enhancing the cushioning properties against the wearer's skin.

In the absorbent article 1A, it is preferable that the acetate fiber assembly 9 is not provided in the flap rising portion 14 between the base portion 10 of the rising flap 6 and the folding line 12 . This makes it easier for the rising flap 6 to rise toward the wearer's skin. Also, the rising flap 6 can be folded thinly before the absorbent article 1A is used. On the other hand, the flap elastic member 8 may be provided on the flap standing portion 14 .

In the absorbent article 1A, as shown in FIG. 1, the acetate fiber assembly 9 is provided with a length shorter than that of the flap elastic member 8 in the front-rear direction y. By providing the acetate fiber assembly 9 in this manner, the rising flap 6 can be raised higher.

1 and 2, the folding line 12 of the rising flap 6 is formed at the outer end of the flap tip 13 in the width direction x. It may be formed at the inner end in the direction x. In this case, the free end 11 of the rising flap 6 is located at the outer end of the flap leading end 13 in the width direction x.

In absorbent article 1B, rise flap 6 is not folded back between base 10 and free end 11 . In this case, it is preferable that the one portion 7A of the flap forming sheet 7 is positioned on the skin surface side of the rising flap 6 when the rising flap 6 is laid down. In the absorbent article 1B, the higher the raised flap 6 stands, the easier it is for the inner surface of the raised flap 6 in the width direction x to come into contact with the wearer's skin. Therefore, the one portion 7A of the flap forming sheet 7 to which the flap elastic member 8 is attached is positioned on the skin surface side of the rising flap 6 in the fallen state of the rising flap 6, so that when the rising flap 6 is raised, the flap is formed. The one portion 7A of the sheet 7 is easily positioned on the outer side surface in the width direction x, and the flap elastic member 8 is easily brought into contact with the wearer's skin via the acetate fiber assembly 9 . In addition, when the contractile force of the flap elastic member 8 is not so strong, the degree of standing up of the rising flap 6 is suppressed, and when the outer surface of the rising flap 6 in the standing state in the width direction x comes into contact with the wearer's skin easily. There is also In such a case, the other portion 7B of the flap forming sheet 7 may be positioned on the skin surface side of the rising flap 6 when the rising flap 6 is laid down.

In the absorbent article 1B, the acetate fiber assembly 9 is preferably spaced apart from the base 10 of the rising flap 6 and provided closer to the free end 11 than to the base 10 . This makes it easier for the rising flap 6 to rise higher toward the wearer's skin.

In the absorbent article 1B, as shown in FIG. 3, the acetate fiber assembly 9 is provided over substantially the entire length of the rising flap 6 in the front-rear direction y. By providing the acetate fiber assembly 9 in this way, it is possible to improve the contact with the wearer's skin not only in the groin but also in the abdomen and back.

Although the absorbent article in which the acetate fiber assembly is provided in the rising flaps has been described above, the absorbent article of the present invention is provided with leg elastic members in portions along the legs of the wearer. The portion may be provided with an acetate fiber assembly. This will be explained below.

The leg elastic member is provided between the first sheet and the second sheet arranged on the non-skin surface side, and is provided outside in the width direction of the absorbent body. By providing the leg elastic members, the absorbent article can improve the fit around the wearer's legs and prevent leakage of urine or the like from around the wearer's legs. Disposable diapers are preferred as absorbent articles having leg elastic members. At least a part of the leg elastic member may be provided outside the absorbent body in the width direction, and for example, the front end and the rear end of the leg elastic member may overlap the absorbent body. Hereinafter, the portion along the leg circumference of the wearer provided with the leg elastic member is referred to as the leg circumference portion.

The absorbent may or may not be disposed between the first and second sheets. Combinations of the first sheet and the second sheet include a combination of a top sheet and a back sheet, a combination of side sheets and a back sheet provided on both sides in the width direction of the top sheet, a combination of an inner layer sheet and an outer layer sheet of an exterior member, and the like. is mentioned.

In the leg area, it is preferable that the leg area of the absorbent article (particularly a disposable diaper) is fitted to the wearer in order to prevent leakage of urine and the like. On the other hand, if the fit around the leg part is improved in this way, the part of the leg part provided with the leg elastic member tends to come into strong contact with the wearer's skin, leading to a decrease in wearing comfort.

Therefore, in the absorbent article according to one embodiment of the present invention, the leg elastic members are attached to the non-skin side second sheet, and the acetate fiber assembly is provided between the leg elastic members and the skin side first sheet. are provided. By providing the acetate fiber in this manner, the leg elastic member is less likely to come into strong contact with the wearer's skin, and cushioning properties can be imparted to the leg-surrounding portion. On the other hand, since the leg elastic members are attached to the second seat, the contractile force of the leg elastic members is directly transmitted to the second seat, and gathers can be preferably formed around the legs. The leg part formed in this way can enhance the fit around the wearer's leg and can reduce contact with the wearer's skin, so that it is excellent in wearing comfort. For details of the acetate fiber assembly, refer to the description of the acetate fiber assembly in the description of the rising flap above.

Preferably, the leg elastic members are attached to the second seat in a stretched state. As a result, gathers can be preferably formed around the leg by the contractile force of the leg elastic member. The leg elastic member is preferably attached to the second seat at an extension ratio of 1.2 times or more and 5.0 times or less, more preferably 1.5 times or more, further preferably 1.8 times or more, Moreover, it is more preferably 4.0 times or less, and still more preferably 3.5 times or less. The expansion ratio described here is 1.0 times in the non-expanded state.

The leg elastic members are preferably attached to the second seat by means of an adhesive. As the adhesive, a hot-melt adhesive is preferably used, and a rubber-based hot-melt adhesive is more preferably used. In addition, it is preferable that the leg elastic member is not attached to the first sheet at the portion overlapping with the acetate fiber assembly.

The acetate fiber assembly is provided between the leg elastic member and the first sheet so as to overlap at least a portion of the leg elastic member. At least a portion of the acetate fiber assembly is preferably provided outside the absorbent body in the width direction, and more preferably all of the acetate fiber assembly is positioned outside the absorbent body in the width direction. The acetate fiber assembly is preferably provided with a length of, for example, 5 cm or more, more preferably 10 cm or more, and more preferably 15 cm or more along the longitudinal direction or the extending direction of the leg elastic member. More preferably, it is provided in length. The width of the acetate fiber assembly is, for example, preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more, and preferably 30 mm or less, more preferably 25 mm or less, and even more preferably 20 mm or less.

The acetate fiber assembly is preferably adhered to the first sheet. Specifically, the acetate fiber assembly is preferably adhered to the first sheet at the adhesion region provided on the first sheet. As a result, even if the leg-surrounding portion expands and contracts due to expansion and contraction of the leg elastic member, the acetate fiber assembly can be firmly fixed at a predetermined position of the leg-surrounding portion. It is preferable that the bonding region where the acetate fiber assembly is bonded to the first sheet has a predetermined width and is provided continuously or intermittently along the longitudinal direction or the extending direction of the leg elastic member. The width of the adhesive region is preferably 3 mm or more, more preferably 5 mm or more, still more preferably 8 mm or more, and preferably 30 mm or less, more preferably 25 mm or less, and even more preferably 20 mm or less. When the adhesive region is intermittently provided, the length of the intermittent portion along the longitudinal direction or the extension direction of the leg elastic member is preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 20 mm or less. Also, the bonding region preferably exists at least within 30 mm rearward from the front end of the acetate fiber assembly, more preferably within 20 mm, even more preferably within 10 mm, and within 30 mm forward from the rear end of the acetate fiber assembly. preferably within 20 mm, and even more preferably within 10 mm.

On the other hand, it is preferable that the acetate fiber assembly is not adhered to the second sheet, or adhered to the second sheet only in a limited portion. In the latter case, the acetate fiber assembly is preferably bonded to the second sheet by the adhesive applied to the leg elastic member, and is not bonded to the second sheet in other areas. This makes it easier for the contractile force of the leg elastic member to be transmitted to the second sheet, and the formation of gathers around the leg is less likely to be hindered by the acetate fiber assembly.

In the leg portion, the acetate fiber assembly may be provided so as to overlap the entire length of the leg elastic member in the front-rear direction. For example, when the leg elastic member is provided to extend in the front-rear direction, the acetate fiber assembly extends forward from the front end of the leg elastic member and rearward from the rear end of the leg elastic member. may be provided so as to extend to the As a result, the wearer's skin is softer around the legs, and the comfort of wearing the absorbent article is improved.

The absorbent article having leg-surrounding parts as described above can be applied to tape-type disposable diapers and pants-type disposable diapers. Tape-type disposable diapers, for example, are provided with a liquid-permeable top sheet on the skin side of the absorbent body, and a liquid-impermeable back sheet on the non-skin side of the absorbent body. The side seats are the first seat described above, the back seat is the second seat described above, and leg elastic members are provided between the side seats and the back seat. and acetate fiber aggregates. A pants-type disposable diaper is constructed by arranging an absorber in the crotch portion of an exterior member formed in the shape of pants. The inner layer sheet may be the first sheet described above, the outer layer sheet may be the second sheet described above, and the leg elastic members and the acetate fiber assembly may be provided between the inner layer sheet and the outer layer sheet. In this case, the leg elastic members are preferably provided along the edges of the leg openings of the underpants-shaped exterior member.

A configuration example of an absorbent article in which an acetate fiber assembly is arranged around the legs will be described with reference to the drawings. 5 and 6 show a configuration example of a tape-type disposable diaper as a third embodiment of the absorbent article of the present invention. FIG. 6 shows a VI-VI sectional view of the absorbent article shown in FIG.

An absorbent article (tape-type disposable diaper) 21 has a liquid-permeable top sheet 22, a liquid-impermeable back sheet 23, and an absorbent body 24 disposed therebetween. Side sheets 27 extending in the front-rear direction y are provided on both sides of the top sheet 22 in the width direction x. The side sheet 27 is joined to the top sheet 22 , and a flap elastic member 28 is provided inward in the width direction x from the joining portion of the side sheet 27 to the top sheet 22 . When the absorbent article 21 is used, the contractile force of the flap elastic member 28 causes the inner portion of the side sheet 27 to rise toward the wearer's skin, forming a rising flap 29 to prevent side leakage of urine and the like. be.

The absorbent article 21 is provided with fastening members 25 on both sides in the width direction x. The fastening members 25 are preferably attached to both ends of the back portion of the absorbent article 21 in the width direction x. The fastening member 25 is configured by providing a fastener (for example, a hook/loop fastener or an adhesive) on a base sheet. On the other hand, it is preferable that a fastening corresponding portion 26 is provided on the non-skin surface side of the front abdomen of the absorbent article 21 . The absorbent article 21 can be worn by applying it to the wearer's crotch and joining the fastener of the fastening member 25 to the fastening corresponding portion 26 .

Leg elastic members 30 extending in the front-rear direction y are provided at both ends of the absorbent article 21 in the width direction x. Gathers are formed around the wearer's legs by the leg elastic members 30, and the fit around the legs can be improved, and leakage of urine and the like can be prevented. The leg elastic members 30 are arranged between the side sheet 27 and the back sheet 23 and attached to the back sheet 23 , and the acetate fiber assembly 32 is arranged between the leg elastic members 30 and the side sheet 27 . By providing the leg elastic member 30 and the acetate fiber assembly 32 in this manner, the fit of the absorbent article 21 around the legs of the wearer can be improved, and the leg-around portion of the absorbent article 21 can be worn. Since contact with the skin of the wearer can be alleviated, the wearing feeling is excellent.

The absorbent article 21 is preferably provided with a waist elastic member 31 extending in the width direction x at the end in the front-rear direction y. The waist elastic member 31 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. The waist elastic member 31 is provided between the top sheet 22 and the back sheet 23 , and part of the waist elastic member 31 may be provided between the side sheet 27 and the back sheet 23 .

7 to 9 show a pants-type disposable diaper as a fourth embodiment of the absorbent article of the present invention. FIG. 7 shows a perspective view of an absorbent article (underpants-type disposable diaper), and FIG. 8 shows the absorbent article (disposable diaper) shown in FIG. FIG. 9 shows a plan view of the state viewed from the skin surface side, and FIG. 9 shows a cross-sectional view of the absorbent article shown in FIG. 8 taken along the line IX-IX.

An absorbent article (underpants-type disposable diaper) 41 has a waist opening 42 and a pair of leg openings 43, and an exterior member 44 formed in a shape of underpants. The exterior member 44 is composed of an inner layer sheet 45 and an outer layer sheet 46 , and the inner layer sheet 45 is arranged on the skin surface side of the outer layer sheet 46 . The waist opening 42 is an opening for passing the torso of the wearer, and the leg opening 43 is an opening for passing the legs of the wearer. The exterior member 44 is composed of a front abdominal portion P, a rear portion Q, and a crotch portion R positioned therebetween.

An absorber 50 is provided in the crotch region R of the disposable diaper 41 . The absorbent body 50 may be present at least in the crotch region R, and may extend to the front abdominal region P and/or the back region Q. As shown in FIG. 9 , in the disposable diaper 41 , an absorbent body 47 having an absorbent body 50 arranged between a top sheet 48 and a back sheet 49 is provided on the skin surface side of the exterior member 44 . In addition, the back sheet 49 is folded back at the edge of the absorbent body 50 in the width direction x and joined to the top sheet 48 .

The absorbent main body 47 is preferably provided with rising flaps 51 on both sides in the width direction x. By providing the rising flap 51, lateral leakage of urine or the like can be prevented. A flap elastic member 52 is provided on the rising flap 51 , and the shrinkage force of the flap elastic member 52 promotes the rising of the rising flap 51 .

The exterior member 44 is provided with leg elastic members 53 along the edges of the leg openings 43 . 7 and 8, the leg elastic member 53 crosses the crotch region R and is provided along the front edge of the leg opening 43, and the front leg elastic member 53F is provided along the front edge of the leg opening 43. and a rear leg elastic member 53B provided along the rear edge of the opening 43. As shown in FIG. The front leg elastic member 53F and the rear leg elastic member 53B provide an elastic member along substantially the entire circumference of the edge of the leg opening 43, forming leg gathers along the leg circumference of the wearer and forming a crotch portion. Leakage of urine or the like from is prevented. In the drawing, the front leg elastic members 53F and the rear leg elastic members 53B are provided apart from each other, but the front leg elastic members 53F and the rear leg elastic members 53B are in contact with or cross each other. may

The front leg elastic member 53F and the rear leg elastic member 53B are preferably intermittently provided at a portion crossing the crotch portion R in the width direction x. In other parts, the front leg elastic member 53F and the rear leg elastic member 53B are preferably provided continuously. If the front leg elastic member 53F and the rear leg elastic member 53B are provided in this manner, the absorbent main body 47 is less likely to be distorted, and the fit of the absorbent main body 47 to the crotch of the wearer is enhanced. When the leg elastic members 53 are provided intermittently, the leg elastic members 53 may be cut by a cutter or the like after the leg elastic members 53 are adhesively fixed to the exterior member 44 . By doing so, the leg elastic members 53 can be easily and intermittently provided in manufacturing, and the portion where the leg elastic members 53 are intermittently provided substantially reduces the contractile force of the elastic member. can be lost.

The leg elastic members 53 are arranged between the inner layer sheet 45 and the outer layer sheet 46 and attached to the outer layer sheet 46 , and the acetate fiber assembly 56 is arranged between the leg elastic members 53 and the inner layer sheet 45 . . By providing the leg elastic member 53 and the acetate fiber assembly 56 in this manner, the fit of the absorbent article 41 around the legs of the wearer can be improved, and the leg-around portion of the absorbent article 41 can be worn. The contact with the skin of the wearer is alleviated, and the wearing feeling is excellent.

A plurality of trunk elastic members 54 extending in the width direction x are preferably provided between the inner layer sheet 45 and the outer layer sheet 46 on the front abdomen P and the back portion Q of the exterior member 44 . A trunk elastic member 54 is provided between the waist opening 42 and the leg openings 43 . The waist elastic member 54 enhances fit around the wearer's waist. Of the torso elastic members 54, elastic members provided at narrow intervals in the front-rear direction y along the edge of the waist opening 42 may be provided as waist elastic members 55, thereby providing a waist elastic member 55 along the waist of the wearer. A waist gather is formed to prevent leakage of urine or the like from the back side or abdomen side. 7 and 8, the waist elastic members 55 are provided at narrower intervals in the front-rear direction y than the trunk elastic members 54 are.

The exterior member 44 may be folded back along the edge of the waist opening 42 . For example, the outer layer sheet 46 may be folded back toward the inner layer sheet 45 at the edge of the waist opening 42 of the exterior member 44 (not shown). In this case, the waist elastic member 55 may be sandwiched between the folded outer layer sheets 46 and adhered to the outer layer sheets 46 .

Although the absorbent article of the present invention has been described above, the absorbent article of the present invention may be one in which the acetate fiber assembly is provided in either the rising flap or the leg circumference portion, or both of them. An acetate fiber assembly may be provided. In either case, the rising flaps and the gathers around the legs can prevent side leakage of urine and the like, and the contact of the elastic member with the wearer's skin in the wearer's groin and legs is alleviated. , it can be an absorbent article excellent in wearing feeling.

1, 1A, 1B, 21, 41: Absorbent article 2, 22, 48: Top sheet 3, 23, 49: Back sheet 4, 24, 50: Absorber 6, 29, 51: Rising flap 7: Flap forming sheet 8, 28, 52: Flap elastic member 9, 32, 56: Acetate fiber assembly 10: Base 11: Free end 12: Folding line 13: Flap tip 14: Flap standing portion 27: Side sheet 30, 53: Leg Elastic member 44: Exterior member 45: Inner layer sheet 46: Outer layer sheet 47: Absorbent body

Claims (8)

An absorbent article having a width direction and a front-back direction and having a rising flap on the skin surface side,
The rising flap has a base that serves as a starting point for rising and a free end that serves as a leading edge of the rising, and is formed by folding back a flap-forming sheet at the free ends,
A flap elastic member extending in the front-rear direction is provided between one portion and the other portion of the folded flap forming sheet sandwiching the free end,
the flap elastic member is attached to the one portion of the flap forming sheet with an adhesive ;
An acetate fiber aggregate is provided between the flap elastic member and the other portion of the flap forming sheet ,
The acetate fiber assembly is adhered to the other portion of the flap forming sheet in an adhesive region provided on the other portion of the flap forming sheet, and the one portion of the flap forming sheet is coated with an adhesive applied to the flap elastic member. an absorbent article , wherein the other portion is not adhered to the one portion of the flap forming sheet . An absorbent article having a width direction and a front-back direction and having a rising flap on the skin surface side,
The rising flap has a base that serves as a starting point for rising and a free end that serves as a leading edge of the rising, and is formed by folding back a flap-forming sheet at the free ends,
A flap elastic member extending in the front-rear direction is provided between one portion and the other portion of the folded flap forming sheet sandwiching the free end,
The flap elastic member is attached to the one portion of the flap forming sheet,
An acetate fiber aggregate is provided between the flap elastic member and the other portion of the flap forming sheet ,
The absorbent article, wherein the acetate fiber assembly is adhered to the other portion of the flap forming sheet and is not adhered to the one portion of the flap forming sheet . The rising flap is folded back along a folding line extending in the front-rear direction between the base and the free end,
The flap elastic member and the acetate fiber assembly are provided at a tip of the flap between the folding line and the free end,
3. The absorbent article according to claim 1, wherein the other portion of the flap-forming sheet is located on the skin surface side of the tip portion of the flap when the rising flap is laid down. said riser flap is unfolded between said base and said free end,
3. The absorbent article according to claim 1, wherein said one portion of said flap-forming sheet is located on the skin surface side of said rising flap when said rising flap is laid down. 4. The absorbent article according to claim 3 , wherein said acetate fiber assembly is not provided between said base portion of said rising flap and said folding line. 5. The absorbent article according to claim 4 , wherein said acetate fiber assembly is provided apart from said base of said rising flap and provided closer to said free end than said base. 7. The acetate fiber assembly according to any one of claims 1 to 6 , wherein the acetate fiber aggregate extends forward from the front end of the flap elastic member and extends rearward from the rear end of the flap elastic member. Absorbent article according to. The acetate fiber assembly extends rearward within 10 mm from the front end of the rising flap, and extends forward within 10 mm from the rear end of the rising flap. 8. The absorbent article according to any one of 7 .

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