JP2021003382A - Absorbent article - Google Patents

Abstract

To provide an absorbent article which is excellent in a shape retaining property and fitting feeling.SOLUTION: An absorbent article 10 includes a top sheet 12, an upper side carrier sheet 25, a cellulose acetate tow absorber 24, a lower side carrier sheet 23, a lower side absorber 21 wrapped by a carrier sheet 22 for a lower layer absorber, and a back sheet 11. The top sheet 12 is arranged except an end surface vicinity 20a in a width direction X of an absorber 20. A three-dimensional gathering sheet 13 constituting three-dimensional gatherings 15 is arranged to cover the end surface vicinity 20a on the absorber 20 and is joined to the top sheet 12 at rising base end joining parts 31 on both ends of the top sheet 12 in the width direction X. The three-dimensional gathering sheet 13, the carrier sheet 25, and the cellulose acetate tow absorber 24 are linearly heat-sealed in a longitudinal direction at a compressed groove 32 outside the rising base end joining part 31 in the width direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to absorbent articles.

Inner pads attached to tape-stopping diapers, etc. are required to have a larger absorption amount for the purpose of reducing the number of replacements due to the labor shortage of care workers in recent years, and so that the wearer does not feel uncomfortable. Those with good rewet are required.
In order to meet such demands, as an absorber of disposable disposable diapers, a product composed of fluff pulp and a super absorbent polymer (hereinafter, also referred to as SAP) is known as a general-purpose product. , A method of increasing the amount of superabsorbent polymer particles used can be considered.

However, since there is an upper limit to the amount of highly absorbent polymer particles that can be supported inside a certain volume of fluff pulp between fibers, fluff pulp is used when a certain amount of highly absorbent polymer particles are provided inside the absorber. Will increase the amount used. Therefore, there is a problem that the thickness of the absorber is increased, and as a result, the thickness of the absorbent article is also increased.

In order to solve this problem, a liquid-permeable non-woven fabric sheet or the like is used in order to support a large amount of highly absorbent polymer particles inside the absorber while keeping the absorber thin. Various methods have been proposed in which highly absorbent polymer particles are supported on one surface of the non-woven fabric or between a plurality of non-woven fabrics by an adhesive or heat-sealing means and used as a part or all of the absorber. Further, Patent Document 1 discloses a fiber opening device such as cellulose acetate tow that makes the fiber density uniform.

JP-A-2018-59239

An absorber using cellulose acetate tow has a bulky and soft texture and a high carrying capacity of a highly absorbent polymer, and can provide a thin and soft absorber. Further, since the absorber using cellulose acetate tow is bulky and easily deformed, it is more easily deformed according to the movement of the body than the hard absorber formed from fluff pulp. However, since the cellulose acetate tow absorber is too soft and has no stiffness (rigidity), the absorbent article may be twisted unexpectedly when it is further deformed according to the movement of the body.
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 excellent shape retention and fit.

As a result of diligent research, the present inventors have found that the above problems can be solved by providing a squeeze groove and further arranging the positions of the squeeze groove and the three-dimensional gather in a specific arrangement, and have reached the present invention.
That is, the present invention is an absorbent article comprising a back sheet, an absorber, and a top sheet in this order and having a pair of three-dimensional gathers on the surface of the top sheet along the longitudinal direction, wherein the top sheet absorbs the absorbent. The three-dimensional gather sheet is arranged except for the vicinity of the end face in the width direction of the body, and the absorber has at least a carrier sheet and a cellulose acetate tow absorber from the top sheet side, and the three-dimensional gather sheet constituting the three-dimensional gather. , It is arranged so as to cover the vicinity of the end face in the width direction on the absorber, and is joined to the top sheet at the standing base end joints at both ends in the width direction of the top sheet, and the three-dimensional gather sheet and the above. The carrier sheet and the cellulose acetate tow absorber are absorbent articles in which a squeezing groove is formed by heat-sealing linearly in the longitudinal direction on the outer side in the width direction from the upright base end joint.

The three-dimensional gather has a first folded portion that is folded outward in the width direction from the upright base end joint portion, and a second folded portion that is further folded outward in the width direction from the pressing groove. The free end of the absorbent article may be oriented inward in the width direction of the absorbent article.

It is preferable that the squeezing groove is composed of intermittently provided heat-sealing portions, and the heat-sealing portions are alternately arranged when viewed in the width direction.

Further, the squeezing grooves are provided in two rows each, and are composed of heat-sealing portions intermittently provided in each row, and the heat-sealing portions may be alternately arranged when viewed in the width direction. ..

Further, the squeezing groove is composed of an intermittently provided heat-sealing portion, and the heat-sealing portion is arranged in parallel in the width direction at the central portion in the longitudinal direction of the absorbent article, and the absorbent portion. The angle gradually changes toward both ends in the longitudinal direction of the article, and both ends of the absorbent article may be arranged parallel to the longitudinal direction.

According to the present invention, it is possible to provide an absorbent article having excellent shape retention and fit.

It is a plan view which shows one Embodiment of the absorbent article of this invention. It is sectional drawing which shows a part of the AA cross section in FIG. It is sectional drawing which shows a part of the BB cross section in FIG. It is a figure which shows the cross-sectional shape near the center of the absorbent article of another example of a three-dimensional gather. It is a figure which shows the cross-sectional shape of the longitudinal end portion of the absorbent article of another example of a three-dimensional gather. It is a top view which shows another example of a squeeze groove. It is a top view which shows another example of a squeeze groove. It is a top view which shows another example of a squeeze groove.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but these are listed for the purpose of exemplification, and the present invention is not limited thereto. The same elements are designated by the same reference numerals throughout the description of the embodiments.

Further, in the description of the present specification, the time when the absorbent article 10 is worn means at least one of the time when the absorbent article 10 is worn and the time after the absorbent article 10 is worn. The longitudinal direction of the absorbent article 10 is a direction extending in front of and behind the wearer when the absorbent article 10 is worn, and is a direction indicated by reference numeral Y in the drawing. Further, the width direction of the absorbent article 10 is a direction laterally or orthogonal to the longitudinal direction, and is a direction indicated by reference numeral X in the drawing. Further, the skin contact surface is the surface of the front and back surfaces of each member such as the absorber that is arranged on the wearer's skin side when worn, and the non-skin contact surface is each member such as the absorber. Of the front and back sides of the above, the side facing the wearer's skin side when worn. Body fluid refers to the liquid discharged from the body to the outside of the body, such as urine, blood, and water in loose stool. Further, examples of the absorbent article 10 include, but are not limited to, a light incontinence pad, a pants-type disposable diaper, and a tape-stopping disposable diaper, regardless of whether they are for babies or adults, but other absorbent articles. There may be.

[Absorbent article]
As shown in FIGS. 1 and 2, the absorbent article 10 of the present embodiment includes a back sheet 11, an absorber 20, and a top sheet 12 in this order, and is paired on the surface of the top sheet 12 along the longitudinal direction Y. It has a three-dimensional gather 15, and the top sheet 12 is arranged except for the vicinity of the end face 20a of the width direction X of the absorber 20, and the absorber 20 is at least a carrier sheet (upper carrier sheet) from the top sheet 12 side. ) 25, which has a cellulose acetate tow absorber 24. In the present embodiment, the absorber 20 is provided with the lower carrier sheet 23 on the back sheet 11 side of the cellulose acetate tow absorber 24, and further has the lower layer absorber 21 wrapped in the carrier sheet 22 for the lower layer absorber. Is.
The three-dimensional gather sheet 13 constituting the three-dimensional gather 15 is arranged so as to cover the vicinity of the end face 20a on the absorber 20, and the top sheet 12 and the standing base end joints 31 at both ends of the top sheet 12 in the width direction X are arranged. The three-dimensional gather sheet 13, the upper carrier sheet 25, and the cellulose acetate tow absorber 24 are joined by the squeezing groove 32 on the outer side in the width direction from the upright base end joint portion 31 to linearly heat in the longitudinal direction. It is fused.

The top sheet 12 of the absorbent article 10 is a skin contact surface, and the back sheet 11 is a non-skin contact surface. The maximum dimension of the absorbent article 10 in the longitudinal direction is preferably 100 mm or more and 800 mm or less, and the maximum dimension in the width direction X is preferably 50 mm or more and 500 mm (see FIG. 2). By adjusting the dimensions of the absorbent article 10 within the above range, an absorbent article 10 suitable for a light incontinence pad, a pants-type disposable diaper, a tape-stopping disposable diaper, or the like can be obtained.
Hereinafter, each configuration of the absorbent article 10 will be described.

(Top sheet)
As shown in FIG. 2, the top sheet 12 is arranged on the absorber 20 except for the vicinity of the end face 20a in the width direction of the absorber 20. Then, both ends of the top sheet 12 in the width direction are joined to the three-dimensional gather sheet 13 by the standing base end joint portion 31.
The top sheet 12 is preferably formed of a non-woven fabric having liquid permeability such that the body fluid moves to the cellulose acetate tow absorber 24. The top sheet 12 is a material such as an air-through non-woven fabric, a thermal bond non-woven fabric, a non-woven fabric such as a spunbond non-woven fabric, a two-layer laminated composite non-woven fabric of thermal bond / spunbond, a foam film such as urethane foam, or a composite sheet in which these are laminated. It is preferably formed from. Further, the surface of the top sheet 12 may be embossed or perforated in order to improve the liquid permeability. As a method for performing these embossing and drilling processes, known methods can be carried out without limitation. Further, in order to reduce irritation to the skin, the top sheet 12 may contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer and the like.

From the viewpoint of strength, workability and liquid return amount, the basis weight of the top sheet 12 is preferably 18 g / m ² or more and 40 g / m ² or less.

(Back sheet)
The back sheet 11 is preferably formed by using a base material having a liquid impermeable property so that the body fluid held by the absorber 20 does not wet the clothes, and the resin film or the resin film and the non-woven fabric are formed. It is formed from a material such as a laminated composite sheet. The non-woven fabric used for the composite sheet is not particularly limited in the manufacturing method, and examples thereof include spunbonded non-woven fabrics, melt-blown non-woven fabrics, laminated composite non-woven fabrics such as spunbond / melt-blow or spunbond / melt-blow / spunbond, and composite materials thereof. Be done. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and a composite film of polyethylene and polypropylene.

From the viewpoint of strength and workability, the basis weight of the back sheet 11 is preferably 15 g / m ² or more and 60 g / m ² or less. Further, in order to prevent stuffiness at the time of mounting, it is preferable that the back sheet 11 has air permeability. In order to provide the back sheet 11 with breathability, for example, a filler may be blended in the resin film of the base material, or the back sheet 11 may be embossed. In addition, calcium carbonate can be mentioned as a filler, and a known method can be used as the compounding method.

(Absorber)
From the top sheet 12 side, the absorber 20 includes a carrier sheet (upper carrier sheet) 25, a cellulose acetate tow absorber 24, a lower carrier sheet 23, and a lower layer absorber 21 wrapped in a carrier sheet 22 for a lower layer absorber. It has.
Hereinafter, each configuration of the absorber will be described.

-Carrier sheet-
In the present embodiment, the upper carrier sheet 25 is provided on the cellulose acetate tow absorber 24, that is, on the top sheet 12 side. By having the upper carrier sheet 25, the diffusibility of the body fluid to the cellulose acetate tow absorber 24 is improved.
The base material of the upper carrier sheet 25 has a permeation rate of body fluid faster than that of the top sheet 12, quickly diffuses the body fluid into the cellulose acetate tow absorber 24, and further provides thermoplastic fibers that are easily heat-sealed in the squeezing groove 32. Anything may be included, for example, a hydrophilic non-woven fabric, particularly an air-through non-woven fabric is preferable. The thickness of the upper carrier sheet 25 is preferably 0.1 mm or more, and the basis weight thereof is preferably 10 g / m ² or more and 60 g / m ² or less, and more preferably 15 g / m ² or more and 40 g / m ² or less. When the thickness and the basis weight are in the above ranges, the liquid is sufficiently diffused over the entire upper surface of the cellulose acetate tow absorber 24, and the cellulose acetate tow absorber 24 and the cellulose acetate tow absorber 24 are formed by heat fusion in the pressing groove 32. It becomes a part of the resin supply source for fixing the gather 15. The shape of the upper carrier sheet 25 is not particularly limited, but has a shape that can completely cover the surface of the cellulose acetate tow absorber 24 so that the body fluid diffuses all over the cellulose acetate tow absorber 24. It is preferable to have.

In the absorbent article 10 of the present embodiment, the lower carrier sheet 23 is also provided on the lower side of the cellulose acetate tow absorber 24, that is, on the back sheet 11 side. By having the lower carrier sheet 23, the body fluid that cannot be completely absorbed by the cellulose acetate tow absorber 24 can be rapidly diffused into the lower layer absorber 21. As the material of the lower carrier sheet 23, the same material as that of the upper carrier sheet 25 can be used.
In the present embodiment, independent carrier sheets are arranged above and below the cellulose acetate tow absorber 24, but one sheet may wrap the entire cellulose acetate tow absorber 24.

The material of the carrier sheet is preferably a thermoplastic non-woven fabric from the viewpoint of fixing by welding, but may be a tissue.

-Cellulose acetate tow absorber-
The cellulose acetate tow of the cellulose acetate tow absorber 24 is preferably spread. The basis weight of the cellulose acetate tow absorber 24 is preferably 20 g / m ² or more and 120 g / m ² or less, and more preferably 45 g / m ² or more and 85 g / m ² or less. By setting the basis weight of the cellulose acetate tow absorber 24 within the above numerical range, it is soft and has shape retention and is firm, so that it does not twist during use of the absorbent article 10.
The fineness of the cellulose acetate tow is not particularly limited, but is preferably 2.5 denier or more and 3.5 denier or less from the viewpoint of having sufficient strength for use.
Further, in the cellulose acetate tow absorber 24, since the entanglement between the fibers is weak, it is preferable to use a binder for the purpose of fusing and fixing the entanglement. As the binder, triacetin or the like can be used.

In order to increase the hydrophilicity, the raw material of the cellulose acetate fiber may selectively use a type of cellulose acetate having a relatively low degree of acetyl group substitution and a relatively large amount of residual hydroxyl groups. Specifically, by using cellulose diacetate having a low degree of acetyl group substitution and a large number of hydroxyl groups as a raw material instead of cellulose triacetate having a high degree of acetyl group substitution and a small number of hydroxyl groups, the hydrophilicity inside and outside the fiber including the fiber surface is used. May be increased.

-Highly absorbent polymer-
The cellulose acetate tow absorber 24 is preferably one in which a highly absorbent polymer is supported. The highly absorbent polymer is not particularly limited as long as it can absorb body fluids and prevent backflow. Sodium polyacrylate-based, polyaspartate-based, (starch-acrylic acid) graft copolymers, Those formed from materials such as (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers and their saponified products can be used. Among these, sodium polyacrylate is preferable from the viewpoint of the amount of absorption per weight.

The basis weight of the highly absorbent polymer in the cellulose acetate tow absorber 24 is preferably 100 g / m ² or more and 600 g / m ² or less, and more preferably 245 g / m ² or more and 445 g / m ² or less. By setting the value within the above numerical range, gel blocking in the cellulose acetate tow absorber 24 can be prevented, and a large amount of body fluid can be absorbed in the cellulose acetate tow absorber 24.

Further, in the cellulose acetate tow absorber 24, the ratio of the weight of the highly absorbent polymer to the weight of the cellulose acetate tow, that is, the weight of the highly absorbent polymer / the weight of the cellulose acetate tow × 100 (%) is 40% or more. It is preferably 500% or less, and more preferably 80% or more and 300% or less. When the weight ratio of the highly absorbent polymer to the cellulose acetate tow is 40% or more, the excreted urine can be sufficiently absorbed. Further, when the above ratio is 500% or less, the highly absorbent polymer is sufficiently supported on the cellulose acetate tow and does not fall, and gel blocking caused by the expansion of the highly absorbent polymer that has absorbed urine. Can be prevented.

-Lower absorber-
The absorbent article 10 of the present embodiment further has a lower layer absorber 21 on the back sheet 11 side of the cellulose acetate tow absorber 24, and is wrapped with a carrier sheet 22 for the lower layer absorber. The carrier sheet 22 for the lower layer absorber can be made of the same material as the upper carrier sheet 25 and the lower carrier sheet 23.
The lower layer absorber 21 is made of fluff pulp. By having the lower layer absorber 21, the body fluid that could not be completely absorbed by the cellulose acetate tow absorber 24 can be replenished by the lower layer absorber 21 made of fluff pulp.
As the fluff pulp used for the lower layer absorber 21, wood pulp (for example, coniferous bleached kraft pulp (N-BKP) such as Southern pine and Douglas fur), synthetic fiber, resin fiber, non-wood pulp and the like are dissolved into cotton. Some are delicate. The basis weight of the fluff pulp, is preferably 100 g / ^{m 2} or more 800 g / ^{m 2} or less, and more preferably 200 g / ^{m 2} or more 615 g / ^{m 2} or less. When the basis weight of the fluff pulp is in the above range, more body fluid can be absorbed without impairing the touch.

When the lower layer absorber 21 is provided, if the three-dimensional gather sheet 13, the upper carrier sheet 25, and the cellulose acetate tow absorber 24 are installed on the lower layer absorber 21 before being fixed by the pressing groove 32, the cushioning property of the lower layer absorber 21 is obtained. This makes it difficult to process the squeezing groove 32. First, it is preferable that the three-dimensional gather sheet 13, the upper carrier sheet 25, and the cellulose acetate tow absorber 24 are fixed by the squeezing groove 32, and then these are placed on the lower layer absorber 21. By that method, the heat fusion conditions of the squeezing groove 32 can be lowered to a lower temperature and lower pressure.

In the present embodiment, the lower layer absorber 21 is provided on the back sheet 11 side of the cellulose acetate tow absorber 24, but the lower layer absorber 21 may not be provided.

(Three-dimensional gather)
The absorbent article 10 has a pair of three-dimensional gathers 15 on the surface of the top sheet 12 along the longitudinal direction Y. The three-dimensional gather 15 is composed of a three-dimensional gather sheet 13 and an elastic member 14. The three-dimensional gather sheet 13 is arranged so as to cover the vicinity of the end face 20a on the cellulose acetate tow absorber 24, and is joined to the top sheet 12 by standing base end joints 31 at both ends of the top sheet 12 in the width direction X. .. The three-dimensional gathers 15 stand up above the top sheet 12 by being joined at the upright base end joining portion 31, and the free ends 15a of the three-dimensional gathers 15 face each other toward the center in the width direction.
As shown in FIG. 3, in the vicinity of the end portion of the absorbent article 10 in the longitudinal direction Y, the three-dimensional gather sheet 13 is joined to the top sheet 12 at the front-rear end joint portion 33. The bonding between the standing base end joint portion 31 and the front and rear end joint portions 33 can be performed by thermocompression bonding or a hot melt adhesive.

In the absorbent article 10 of the present invention, as shown in FIG. 4, the three-dimensional gather 15 is wider than the first folded portion 16 which is folded outward in the width direction from the standing base end joint portion 31 and the squeezing groove 32. The second folded portion 17 folded on the outer side in the direction may be provided, and the free end 15a of the three-dimensional gather 15 may be oriented inward in the width direction of the absorbent article 10. In this case, as shown in FIG. 5, the folded three-dimensional gather sheets 13 are joined to each other at the joint portion 34 in the vicinity of the end portion of the absorbent article 10 in the long side direction Y.
By folding back the three-dimensional gather sheet 13 in this way, the three-dimensional gather sheet 13 can hide the squeezing groove 32, so that the cosmeticity of the absorbent article 10 can be maintained.

-Three-dimensional gather sheet-
As the three-dimensional gather sheet 13, it is preferable to use a liquid-impermeable non-woven fabric in order to prevent lateral leakage. The material of the liquid-impermeable non-woven fabric may be liquid-impermeable, and the non-woven fabric is not particularly limited in the manufacturing method. Laminated composite non-woven fabrics such as spunbonds and composite materials thereof can be mentioned.

-Elastic member-
The elastic member 14 is provided between the three-dimensional gather sheet 13 folded in half. As the elastic member 14, for example, a polyurethane thread, a band-shaped polyurethane film, a thread-shaped or band-shaped natural rubber, or the like is used.

(Pressure groove)
In the absorbent article 10, the three-dimensional gather sheet 13, the upper carrier sheet 25, and the cellulose acetate tow absorber 24 are linearly heat-sealed in the longitudinal direction Y on the outer side in the width direction from the upright base end joint 31 ( (See FIG. 1), the squeezing groove 32 is formed.
By fixing the cellulose acetate tow absorber 24 to the three-dimensional gather sheet 13 on the outer side in the width direction from the standing base end joint portion 31, the cellulose acetate tow absorber 24 is prevented from being twisted in the width direction inside. Can be done.

Since the absorbent article of the present invention uses the absorber 20 using cellulose acetate tow, which has a high cushioning property, it is soft but soft to the touch, but it is chewy, so that it does not easily twist due to use.

Further, as in the absorbent article 40 shown in FIG. 6, the squeezing grooves 42A and 42B are composed of the heat-sealing portions 42a and 42b provided intermittently, respectively, and the heat-sealing portions 42a when viewed in the width direction X. And 42b may be arranged alternately. Since the squeezing grooves 42A and 42B are intermittently arranged and alternately arranged, it is easier to bend in the long side direction Y than when the squeezing grooves 42A and 42B are continuous (see FIG. 1).

Further, as in the absorbent article 50 shown in FIG. 7, two rows of pressing grooves 52A and 52B are provided, respectively, and heat-sealing portions (52a and 52b, 52c and 52d) intermittently provided in each row. The heat-sealed portions (for example, 52a and 52b) may be alternately arranged when viewed in the width direction X. By making the squeezing grooves in two rows, the strength is increased as compared with the case of one row. In addition, the ease of bending can be maintained by arranging them alternately.

Further, as in the absorbent article 60 shown in FIG. 8, the heat-sealing portions 62a and 62b are provided with the squeezing grooves 62A and 62B intermittently, and the heat-sealing portions 62a and 62b are the absorbent articles 60. Is arranged parallel to the width direction X in the central portion in the longitudinal direction (region C in the figure), and the angle gradually increases toward both ends (region A in the figure) in the longitudinal direction Y of the absorbent article 60. It changes (region B in the figure), and at both ends of the absorbent article 60 (region A in the figure), it may be arranged parallel to the longitudinal direction Y. That is, in the crotch portion (corresponding to the region C), which is more easily bent by the movement of the body during use, the directions of the heat-sealing portions 62a and 62b are right beside (width direction X) and parallel to the long side direction Y. By not providing a heat-sealing portion, the cellulose acetate tow absorber 24 is easily bent while being reshaped. Further, in the part (corresponding to the area B in the figure) that deforms intricately from the crotch part (area C in the figure) toward the front body and the back body (area A in the figure), the shape of the body at the time of wearing is obtained. By making the line diagonal so that it fits, it can be deformed to make it easier to fit.

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above-described embodiments and examples. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. Further, it is clear from the description of the scope of claims that the form to which such a modification or improvement is added may be included in the technical scope of the present invention.

10, 40, 50, 60 Absorbent article 11 Back sheet 12 Top sheet 13 Three-dimensional gather sheet 14 Elastic member 15 Three-dimensional gather 16 First folded part 17 Second folded part 20 Absorber 20a Near the end face 21 Lower layer absorber 22 Lower layer absorber Carrier sheet 23 Lower carrier sheet 24 Cellulose acetate tow absorber 25 Upper carrier sheet 31 Standing base end joints 32, 42A, 42B, 52A, 52B Squeezing grooves 42a, 42b, 52a, 52b, 52c, 52d, 62a, 62b Heat fusion part 34 Joint part

Claims (5)

An absorbent article comprising a back sheet, an absorber, and a top sheet in this order and having a pair of three-dimensional gathers on the surface of the top sheet along the longitudinal direction.
The top sheet is arranged except near the end face in the width direction of the absorber.
The absorber has at least a carrier sheet and a cellulose acetate tow absorber from the top sheet side.
The three-dimensional gather sheet constituting the three-dimensional gather is arranged so as to cover the vicinity of the end face in the width direction on the absorber, and is joined to the top sheet at the upright base end joints at both ends in the width direction of the top sheet. And
The three-dimensional gather sheet, the carrier sheet, and the cellulose acetate tow absorber are thermally fused linearly in the longitudinal direction on the outer side in the width direction from the upright base end joint to form a squeeze groove. Absorbent article. The three-dimensional gather has a first folded portion that is folded outward in the width direction from the upright base end joint portion, and a second folded portion that is further folded outward in the width direction from the pressing groove. The absorbent article according to claim 1, wherein the free end of the absorbent article faces inward in the width direction of the absorbent article. The absorbent article according to claim 1 or 2, wherein the pressing grooves are composed of intermittently provided heat-sealing portions, and the heat-sealing portions are alternately arranged when viewed in the width direction. The squeezing groove is provided in two rows each, and is composed of heat-sealing portions intermittently provided in each row, and the heat-sealing portions are alternately arranged when viewed in the width direction. 2 The absorbent article according to any one of the items. The squeezing groove is composed of intermittently provided heat-sealing portions, and the heat-sealing portions are arranged parallel to each other in the width direction at the central portion in the longitudinal direction of the absorbent article. The absorbent article according to claim 1 or 2, wherein the angle gradually changes toward both ends in the longitudinal direction, and the absorbent articles are arranged parallel to the longitudinal direction at both ends of the absorbent article.