JP2017169687A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which is an absorbent article increased in an absorption amount and an absorption rate of body fluid, and can achieve quick absorption and prevention of leakage owing to that body fluid is held in a proper portion on an absorber.SOLUTION: An absorbent article includes a top sheet with liquid permeability, a back sheet with liquid impermeability, and an absorber comprising absorbent fiber and high absorbent polymer. The absorbent article is such that: in the absorber, width direction both ends are bent to a body side over the entire length in the longitudinal direction by a pair of folding lines across a width direction center line, and both portions across each folding line are oppositely held; in a state that the width direction both ends of the absorber are bent to a body side, the width direction both ends of the absorber are separated from each other in the width direction; an area between two folding lines of the absorber is provided with a recess extending at least to the longitudinal direction center part of the absorber; and a separation distance between the width direction both ends of the absorber is narrower than a maximum dimension in the width direction of the recess.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent article having an improved body fluid absorption rate and effectively preventing leakage.

  In general, tape-type disposable diapers, light incontinence pads, urine-absorbing pads, pants-type disposable diapers, etc. are known as absorbent articles. These absorbent articles can be used according to the need for care in the excretion of the wearer. Are appropriately selected and used. These absorbent articles are composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the two sheets. By adopting such a configuration, body fluid such as urine passes through the top sheet of the absorbent article and is absorbed by the absorbent body, and does not leak to the outside by the back sheet.

  By the way, in recent years, in absorbent articles, attempts have been made to increase the absorption amount and the absorption speed by applying various devices to the absorbent body. For example, in an absorbent article known in recent years, attempts have been made to increase the absorption rate and the amount of absorption of bodily fluids by providing slits in the absorber or bending both ends of the absorber.

  For example, Patent Document 1 discloses a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and an outer side of the absorbent body extending in the width direction. Flexible side flaps and a stretchable elastic member disposed in the longitudinal direction in the crotch region of the side flaps, and the longitudinal side edges of the absorbent body together with the side flaps inward of the absorbent body An absorbent article is disclosed in which a first folded portion is formed by folding back to the outer side, and the first folded portion is further folded outward of the absorbent body to form a second folded portion.

Japanese Patent Laid-Open No. 04-051952

  However, in the invention described in Patent Document 1, body fluid may not be retained at an appropriate site on the absorber, and when a large amount of urine is excreted, it is not always rapidly absorbed by the absorber. There was also a problem with the absorbent performance of the absorbent article, such as the risk of leakage. Therefore, the present invention has been made in view of the above problems, and is an absorbent article with an increased amount of absorbed body fluid and an increased absorption speed, and the body fluid is quickly held in an appropriate site on the absorbent body. It aims at providing the absorbent article which can implement | achieve absorption and prevention of leak.

  The inventors of the present invention have conducted extensive research in view of the above problems. As a result, both end portions in the width direction of the absorber are folded over the entire length in the longitudinal direction, and in the folded state, both end portions in the width direction are separated from each other in the width direction. According to the absorbent article which provided the predetermined recessed part in the area | region between, it discovered that the said subject could be solved and came to complete this invention. Specifically, the present invention provides the following.

  (1) A first aspect of the present invention is an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body made of absorbent fibers and a superabsorbent polymer. The absorbent body is a pair of fold lines sandwiching the center line in the width direction, and both end portions in the width direction are bent toward the body side over the entire length in the longitudinal direction, and the parts on both sides sandwiching each fold line are opposed to each other. In the state where the both ends in the width direction of the absorber are bent toward the body side, the both ends in the width direction of the absorber are separated from each other in the width direction, and two of the absorber The region between the fold lines is provided with a recess that extends at least in the center in the longitudinal direction of the absorber, and the separation distance between both ends in the width direction of the absorber is greater than the maximum dimension in the width direction of the recess. Narrow, absorbent article.

  (2) A second aspect of the present invention is the absorbent article according to (1), wherein, in a state before the absorbent body is bent, a high absorption is provided on a surface constituting the clothing side of the absorbent body. The functional polymer is present in a concentrated state.

  (3) A third aspect of the present invention is the absorbent article according to (1) or (2), wherein the top sheet is bent to the body side along a fold line together with the absorber, The parts on both sides across the fold line are held facing each other, and a gap is formed between the skin and the region between the two fold lines of the absorbent body when the absorbent article is worn. It is characterized by this.

  (4) A fourth aspect of the present invention is the absorbent article according to any one of (1) to (3), wherein a shortest separation distance between both end portions in the width direction of the absorber is 1 cm or more and 5 cm or less. And 10% or more and 100% or less of the maximum dimension of the concave portion in the width direction.

  (5) A fifth aspect of the present invention is the absorbent article according to any one of (1) to (4), wherein the absorber is thin at the fold line, or the absorber is A groove or a slit is formed.

(6) A sixth aspect of the present invention is the absorbent article according to any one of (1) to (5), wherein the bulkiness of the absorber is 1 cm ³ / g or more and 25 cm ³ / g or less. It is characterized by being.

  (7) A seventh aspect of the present invention is the absorbent article according to any one of (1) to (6), wherein protrusions are provided at both end portions in the width direction of the absorbent body or the concave portion. The both ends of the absorbent body in the width direction can be held in a state of being spaced apart from the opposite portions.

  The absorbent article of the present invention has a pair of folding lines sandwiching the center line in the width direction, and bends both ends in the width direction of the absorbent body over the entire length in the longitudinal direction so that both ends in the width direction are bent toward the body side. In addition, the parts on both sides across each fold line are opposed to each other, and both end portions in the width direction of the absorbent body are held apart from each other. As a result, a space surrounded by the absorber is formed in a region including the center line in the width direction on the absorber where the body fluid is excreted, so by holding the excreted body fluid at this site , Ensure rapid absorption of body fluids. Furthermore, in the absorbent article of the present invention, since a recess extending at least in the longitudinal center of the absorbent body is provided in the region between the two folding lines of the absorbent body, the pair of folded widths More body fluid is held by the both ends in the direction and the recesses to prevent leakage in the longitudinal direction, and a pair of both ends in the width direction in which the edges of the recesses are folded are held. Will not be crushed and the width direction both ends will not contact the site | part on the absorber which opposes over the full length of a longitudinal direction.

In one mode of an absorptive article of the present invention, it is a figure showing the state before folding of an absorber, and the state after folding of an absorber. It is drawing which shows another aspect of the absorbent article of this invention. In another aspect of the absorbent article of this invention, it is drawing which shows the state before folding of an absorber, and the state after folding of an absorber.

<Absorbent article>
In the description of the present specification, the time when the absorbent article 1 is worn means at least one of the time when the absorbent article 1 is attached and after the attachment. The longitudinal direction of the absorbent article 1 is a direction extending before and after the wearer when the absorbent article 1 is worn, and is a direction indicated by a symbol Y in the figure. Moreover, the width direction of the absorbent article 1 is a direction that is transverse or orthogonal to the longitudinal direction, and is a direction indicated by a symbol X in the drawing. Further, the body-side surface is a surface arranged on the skin side of the wearer at the time of wearing out of the front and back surfaces of each member such as the absorber 23, and the clothing-side surface is the surface of each member such as the absorber 23. Of the front and back surfaces, the surface is directed to the side opposite to the wearer's skin when worn. Body fluid refers to fluid discharged from the body, such as urine, blood, and water in loose stool. Furthermore, the use of the absorbent article 1 is not particularly limited, and is generally a tape-type disposable diaper, a pants-type disposable diaper, a urine-absorbing pad, a light incontinence pad, for infants or adults, It may be a sanitary product or the like.

  FIG. 1 is a view showing a state before the absorber 23 is folded and a state after the absorber 23 is folded in one aspect of the absorbent article 1 of the present invention. The absorbent article 1 of the present invention includes a liquid-permeable top sheet 21, a liquid-impermeable back sheet 22, and an absorbent body 23 made of absorbent fibers and a superabsorbent polymer 232. Moreover, in order to prevent the side leakage of the body fluid excreted by the user, the absorbent article 1 has a pair of three-dimensional gathering elastic members on the top sheet 21 along the longitudinal direction of the absorbent article 1. Gather may be provided. The outer end of the three-dimensional gather in the width direction of the absorbent article 1 is fixed to the back sheet 22, its inner end is fixed to the top sheet 21, and its center is a free end that is not fixed to the top sheet 21. Gather sheets are arranged. By providing the elastic member for three-dimensional gathering along the longitudinal direction, the three-dimensional gather has uprightness and can be deformed in accordance with the wearer's body shape. As the elastic member for three-dimensional gather, for example, polyurethane yarn, band-like polyurethane film, yarn-like or band-like natural rubber, etc. are used, and as the three-dimensional gather sheet, water repellency or liquid impermeability formed of hydrophobic fibers. Non-woven fabrics such as spunbond nonwoven fabrics, meltblown nonwoven fabrics, and composite nonwoven fabrics laminated with spunbond / meltblown / spunbond are used.

[Top sheet]
The top sheet 21 may be formed from a base material having liquid permeability that allows body fluid to move to the absorber 23. For example, non-woven fabrics such as air-through nonwoven fabric, thermal bond nonwoven fabric, and spunbond nonwoven fabric, thermal bond / spun It is formed from a material such as a composite nonwoven fabric in which bonds are laminated, an open film such as an open polyethylene film, a foam film such as polyethylene foam or urethane foam, or a composite sheet in which these are laminated. Further, the top sheet 21 may be embossed or perforated on the surface in order to improve the liquid permeability. As a method for performing these embossing and perforating processes, a known method can be carried out without limitation. In order to reduce irritation to the skin, the top sheet 21 may contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizing agent and the like. Furthermore, from the viewpoint of strength and workability, the basis weight of the top sheet 21 is preferably 15 g / m ² or more and 400 g / m ² or less.

[Back sheet]
The back sheet 22 may be formed by using a base material having liquid impermeability so that the body fluid held by the absorbent body 23 does not wet the clothing, and a resin film or a resin film and a nonwoven fabric are laminated. It is formed from a material such as a composite sheet. The nonwoven fabric used for the composite sheet is not particularly limited, and examples thereof include spunbond nonwoven fabric and meltblown nonwoven fabric, or composite nonwoven fabric obtained by laminating spunbond / meltblown, spunbond / meltblown / spunbond, and composite materials thereof. Can be mentioned. 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 backsheet 22 is preferably 15 g / m ² or more and 50 g / m ² or less. Further, it is preferable that the back sheet 22 has air permeability in order to prevent stuffiness at the time of wearing. In order to provide the back sheet 22 with air permeability, for example, a filler may be blended in the resin film of the base material, or the back sheet 22 may be embossed. In addition, calcium carbonate can be mentioned as a filler, The compounding method can perform a well-known method without a restriction | limiting.

[Absorber]
It is preferable that the absorber 23 contains the absorptive fiber as a base material and the superabsorbent polymer 232 (SAP). The absorbent fiber is not particularly limited as long as it is generally used for absorbent articles such as sanitary napkins, diapers and urine absorbing pads. For example, fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, hydrophilic paper Can be mentioned. Among these, it is preferable to use fluff pulp from the viewpoint of absorbability. Examples of such fluff pulp include wood pulp, synthetic fiber, polymer fiber, non-wood pulp and the like that have been fibrillated into cotton. The absorbent fibers of the absorbent body 23 preferably have a basis weight of 100 g / m ² or more and 800 g / m ² or less so as not to impair the absorption performance and the touch. The absorber 23 may be in a state where it is pressed at a high pressure.

The superabsorbent polymer 232 of the absorbent body 23 is not particularly limited as long as it absorbs body fluid and can prevent backflow. Sodium polyacrylate, polyaspartate, (starch-acrylic acid) Those formed from materials such as a graft copolymer, an (acrylic acid-vinyl alcohol) copolymer, an (isobutylene-maleic anhydride) copolymer, and a saponified product thereof can be used. Among these, sodium polyacrylate is preferable from the viewpoint of the amount of absorption per weight. The SAP amount of the absorbent body 23 is preferably set to a basis weight of 50 g / m ² or more and 500 g / m ² or less, and a content of 15% by mass or more and 50% by mass or less so as not to impair the absorption performance and the touch. Is preferred.

  In the absorbent body 23, the form of the absorbent fiber and the SAP may be that formed by mixing SAP particles in the absorbent fiber, or a SAP sheet in which the SAP particles are fixed between the absorbent fibers. preferable. Moreover, it is preferable to wrap the absorber 23 in a carrier sheet 26 for the purpose of preventing leakage of SAP particles and stabilizing the shape of the absorber 23. The base material of the carrier sheet 26 may be anything as long as it has hydrophilicity, and examples thereof include hydrophilic nonwoven fabrics such as tissue, absorbent paper, airlaid nonwoven fabric, hydrophilic spunbond nonwoven fabric, and hydrophilic air-through nonwoven fabric. When a plurality of carrier sheets 26 are provided, the base material of the carrier sheet 26 may be the same or different.

The bulkiness of the absorber 23 is preferably 1 cm ³ / g or more and 25 cm ³ / g or less, and more preferably 1.5 cm ³ / g or more and 5 cm ³ / g or less. By making the bulkiness of the absorbent body 23 within the above range, the absorbability of the excreted body fluid can be favorably maintained without impairing the fit of the absorbent article 1. In addition, about the bulkiness of the absorber 23, the thickness of the absorber 23 is set to the average thickness of the absorber 23 in a state where a load of 3432 Pa is applied using a dial gauge (“Peacock dial gauge” manufactured by Ozaki Seisakusho). It calculated | required and computed from this average thickness and the area of the absorber 23. FIG.

  In the present invention, both end portions 231 in the width direction of the absorber 23 are bent by a pair of folding lines 25 sandwiching the center line in the width direction over the entire length in the longitudinal direction, and both end portions 231 in the width direction extend over the entire length in the longitudinal direction. Bending toward the body side, the parts on both sides sandwiching the fold line 25 are held facing each other. In this state, both ends 231 in the width direction of the absorbent body 23 are separated from each other in the width direction, and a part of the surface constituting the body-side surface of the absorbent body 23 in a state before the absorbent body 23 is bent, It is exposed without being covered by the bent width direction both ends 231. And in the body side surface of said absorber 23, the recessed part 24 covering the longitudinal direction center part of the absorber 23 is provided in the area | region between the two folding lines 25 of the absorber 23, and absorption is carried out. The distance A between the widthwise opposite end portions 231 of the body 23 is narrower than the maximum dimension B in the widthwise direction of the recess 24.

  By adopting the configuration as described above, in the folded absorbent body 23, a space is formed by the pair of width direction both ends 231 and the recess 24 of the absorbent body 23, and the separated width direction both ends 231 are separated. Since the bodily fluid flowing in from the gap is held in this space, the absorber 23 can hold a large amount of bodily fluid, preventing leakage of bodily fluid from both ends in the longitudinal direction, and the held bodily fluid is stored in the recess 24. Since it contacts the wall surface and the wall surface of the both ends 231 in the width direction, the body fluid is rapidly absorbed by the absorber 23. The wall surface of the recess 24 also has a role as a weir. However, the height is increased from the central portion in the longitudinal direction toward both ends in the longitudinal direction, with only the height of the wall surface inclined from the central portion in the longitudinal direction toward both ends. May be increased. By designing in this way, the body fluid can be developed on the absorbers 23 at both ends in the longitudinal direction while moderately weakening the momentum of the body fluid deployed in the longitudinal direction at high speed. On the other hand, when a bodily fluid with weak momentum reaches the wall surface, the movement of the bodily fluid remains there, and as a result, the absorber 23 in the longitudinal direction may not be utilized. Therefore, the height of a part of the wall surface is the same as the wall surface. It may be provided at a height.

  In this invention, the recessed part 24 of the absorber 23 may be divided | segmented into plurality, if the at least 1 recessed part 24 has reached the longitudinal direction center part. In this case, the dimension of the divided recess 24 and the dimension of the boundary part are arbitrarily set. For example, as shown in FIG. 1, the recess 24 may be divided in the longitudinal direction, or may be divided in the width direction as shown in FIG. 3. When the concave portion 24 is divided and provided, the boundary between the divided concave portion 24 and the both ends 231 in the width direction are in contact with each other, and the folded width direction both end portions 231 are supported by the boundary between the divided concave portions 24. Is done. As a result, the space formed by the width direction both ends 231 and the recess 24 is held without being crushed. In addition, when the recessed part 24 is divided | segmented into the width direction, the largest dimension B of the width direction of the recessed part 24 is the outermost part in the width direction in all the some recessed parts 24 divided | segmented, and the area | region including the boundary part. It is calculated as a dimension between the wall surfaces of the recess 24 located at the position.

  In particular, in the case where the recess 24 is divided in the longitudinal direction, protrusions 27 may be provided on both ends 231 in the width direction of the absorber 23 or the recess 24, and the protrusions 27 of the absorber 23 You may enable it to hold | maintain in the state which spaced apart the width direction both ends 231 and the site | part which opposes this. By adopting such a configuration, the space formed by the width direction both end portions 231 and the concave portion 24 of the absorber 23 can be more reliably held.

(Separation distance between both ends in the width direction)
In the folded absorbent body 23, the shortest separation distance A between the widthwise end portions 231 of the absorbent body 23 is 1 cm or more and 5 cm or less, and 10% or more of the maximum dimension B in the width direction of the recess 24 is 100%. % Or less, more preferably 20% or more and 90% or less. By setting the separation distance A between the width direction both ends 231 within the above range, the excreted body fluid can be appropriately guided to the recess 24, and the width direction both ends 231 and the recess 24 are completely in contact with each other. In addition, the contact area between the body fluid held in the space formed by the recess 24 and the width direction both ends 231 and the absorber 23 can be increased. In addition, about the width direction edge part, it does not necessarily need to be formed in linear form, and you may draw the arc. In such a case, for example, the separation distance A of the width direction both end portions 231 can be widened only in a part of the region such as a body fluid excretion portion, and the body fluid accommodation capacity can be improved.

(Disposition of superabsorbent polymer)
Here, in the present invention, it is preferable that the superabsorbent polymer 232 is present in a concentrated state on the surface of the absorbent body 23 on the clothing side before the absorbent body 23 is bent. That is, it is preferable that more superabsorbent polymer 232 is present on the garment side surface as compared to the body side surface of the absorbent body 23 in this state. Thereby, in a state where the absorber 23 is bent, the body fluid held inside the absorber 23 is absorbed by the superabsorbent polymer 232 present on the outer surface of the absorber 23 and the superabsorbent polymer 232. Therefore, the movement of the body fluid is blocked by the swollen superabsorbent polymer 232, and the body fluid held inside the absorber 23 can be prevented from leaking outside the absorber 23. The absorbent body 23 may be formed by laminating an upper layer absorbent body and a lower layer absorbent body. In this case, by making the superabsorbent polymer 232 unevenly distributed in the lower layer absorbent body, It is possible to realize a configuration in which the superabsorbent polymer 232 is concentrated on the clothing side surface. The length in the longitudinal direction and the width direction of the upper layer absorber and the lower layer absorber may be such that the length of the upper layer absorber is longer than the length of the lower layer absorber, and the length of the upper layer absorber is the same as the length of the lower layer absorber. The length of the upper-layer absorber may be shorter than the length of the lower-layer absorber. Moreover, you may arrange | position the SAP sheet to which the superabsorbent polymer 232 was concentratedly arranged along the longitudinal direction of a product center part. By adopting the SAP sheet, the SAP sheet swells due to the swelling of the SAP at the time of absorption, and as a result, the concave central part that originally does not touch the skin is raised specifically to become a convex shape and contact the skin, The effect of wiping off body fluid remaining on the skin is expressed.

(Arrangement of top sheet and carrier sheet when folding absorber)
FIG. 2 is a drawing showing another embodiment of the absorbent article 1 of the present invention. As described above, the absorber 23 is preferably wrapped in the carrier sheet 26. For this reason, when the absorber 23 is bent, as shown in FIG. 2, the absorber 23 wrapped in the carrier sheet 26 may be bent to bend both ends 231 in the width direction of the absorber 23. In addition, as illustrated in FIG. 1, after the absorbent body 23 is laminated with the top sheet 21, the absorbent body 23 may be bent and the width direction both ends 231 of the absorbent body 23 may be bent. In this case, the top sheet 21 is bent to the body side along the fold line 25 together with the absorbent body 23, and the portions on both sides sandwiching the fold line 25 are held facing each other. By adopting such a configuration, due to the repulsive force of the bent carrier sheet 26 and top sheet 21, the entire length of both end portions 231 in the width direction of the absorbent body 23 comes into contact with the parts of the absorbent body 23 facing each other. In the case where the absorbent body 23 is folded together with the top sheet 21, a gap is formed between the skin and the region between the two folding lines 25 of the absorbent body 23 when the absorbent article 1 is worn. Therefore, the excreted bodily fluid can be rapidly guided to the space formed by the widthwise opposite end portions 231 and the recessed portion 24 of the folded absorbent body 23, and as a result, the bodily fluid is absorbed by the absorbent body 23. Can be absorbed quickly.

(Fold line)
A pair of folding lines 25 for folding the absorber 23 is formed across the center line in the width direction. Here, in this invention, it is preferable that the absorber 23 is thin in this folding line 25, or the groove | channel or the slit is formed in the absorber 23. FIG. With such a configuration, the absorbent body 23 can be easily folded during the manufacturing process of the absorbent article 1, and both end portions 231 in the width direction of the folded absorbent body 23 are bent toward the body side. The shape can also be kept stable.

<Method for producing absorbent article>
The manufacturing method of the absorbent article 1 can employ a well-known method. For example, (A) an absorbent mat is formed by stacking absorbent fibers together with the superabsorbent polymer 232 to form the absorbent body 23. (B) a step of fixing and integrating the top sheet 21 and the three-dimensional gather with a hot-melt adhesive, and (C) applying a hot-melt adhesive to the inside of the top sheet 21, the three-dimensional gather, and the back sheet 22. (D) In the collective drum, the top sheet 21 is disposed above the absorber 23 and the back sheet 22 is disposed below the absorber 23 to fix and integrate the constituent members. (E) Absorption The manufacturing method etc. which have the process of cutting the semi-finished product of the property article 1 by a product size with a cutter apparatus, and isolate | separating each absorbent article 1 can be mentioned. And about the absorber 23 of the absorbent article 1 in this invention, in the fold line 25 which pinches | interposes a width direction centerline with the top sheet 21 or the carrier sheet 26 in any step of the manufacturing process of the absorbent article 1, What is necessary is just to bend by bending to the body side.

DESCRIPTION OF SYMBOLS 1 Absorbent article 21 Top sheet 22 Back sheet 23 Absorber 231 Both ends in the width direction 232 Superabsorbent polymer 24 Concave portion 25 Folding line 26 Carrier sheet 27 Protrusion A Separation distance in the width direction both ends B Maximum dimension in the width direction of the concave portion Y Longitudinal direction X width direction

Claims (7)

An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body made of absorbent fibers and a superabsorbent polymer,
The absorbent body is a pair of fold lines sandwiching the center line in the width direction, and both ends in the width direction are bent toward the body over the entire length in the longitudinal direction, and the parts on both sides sandwiching each fold line are held facing each other. Has been
In a state where the widthwise both ends of the absorber are bent toward the body side, the widthwise both ends of the absorber are separated from each other in the width direction,
In the region between the two fold lines of the absorber, a recess that extends at least in the center in the longitudinal direction of the absorber is provided,
An absorptive article in which the separation distance of the width direction both ends of the absorber is narrower than the maximum dimension of the concave part in the width direction.   The absorbent article according to claim 1, wherein in a state before the absorber is bent, a superabsorbent polymer is present on the surface constituting the clothing side of the absorber. The top sheet, together with the absorber, bends to the body side at the fold line, and the parts on both sides sandwiching each fold line are held facing each other,
The absorbent article according to claim 1 or 2, wherein a gap is formed between the skin and a region between two fold lines of the absorbent body when the absorbent article is worn.   4. The shortest separation distance between both end portions in the width direction of the absorber is 1 cm or more and 5 cm or less, and is 10% or more and 100% or less of a maximum dimension in the width direction of the concave portion. The absorbent article as described.   The absorbent article according to any one of claims 1 to 4, wherein the absorbent body is thin in a fold line, or a groove or a slit is formed in the absorbent body. The bulkiness of the absorber is less than ^{1 cm} 3 / g or more 25 cm ³ / g, the absorbent article according to any one of claims 1 to 5.   The protrusion is provided in the said width direction both ends or the said recessed part of the said absorber, The said width direction both ends and the site | part which opposes this can be hold | maintained in the state spaced apart. The absorbent article in any one of 6.

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