JP2015188542A - absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which causes less unpleasant feeling such as a sense of pressure to the skin and which has less possibility of leakage such as a lateral leak.SOLUTION: The absorbent article includes: a liquid permeable surface sheet 11; a back sheet 12; an absorber 13 arranged between the surface sheet 11 and the back sheet 12; a pair of three-dimensional gathers 20 having a standing part that rises from the surface sheet 11 on the side opposite from the absorber 13; and a particulate absorber 30 that swells by liquid absorption. The particulate absorber 30 is filled with a non-stationary state in an inner space 20A formed inside the standing part, while the standing part is provided with a standing stretchable material 23 that is separated from the inner space 20A with an inner sheet 22 and is configured to rise by the elastic force of the standing stretchable material 23.

Description

  The present invention relates to an absorbent article that can be used as a disposable diaper, a urine pad, a sanitary product, and the like.

  Conventionally, in absorbent articles such as disposable diapers, in order to prevent so-called side leakage, a three-dimensional gather (leak barrier) is provided along the vicinity of the side edge of the absorbent body disposed between the front and back sheets. Yes. The three-dimensional gather prevents the body fluid that rises in the direction away from the absorber and cannot be absorbed by the absorber or the body fluid before being absorbed by the absorber from the side edge of the absorber. In the three-dimensional gather, for example, an elastic material is attached to a hydrophobic sheet or the like in a direction along the side edge of the absorber, and the three-dimensional gather is erected by the elastic force of the elastic material.

It has also been proposed to give the three-dimensional gather itself absorbency. For example, Patent Document 1 proposes that an absorbent body different from the absorbent body disposed between the front and back sheets is disposed inside the three-dimensional gather. Further, Patent Document 2 proposes that the side edges of the absorbent body disposed between the front and back sheets are bent together with the front and back sheets to form a three-dimensional gather.
If the three-dimensional gather itself has an absorptivity, it is possible to supplement the absorbing power of the absorber disposed between the front and back sheets. Moreover, since the intensity | strength of a solid gather increases by the absorber which absorbed the bodily fluid inside a solid gather, a solid gather becomes difficult to bend | fold by contact with a wearer's skin, and leakage prevention improves.

JP 2000-271169 A JP 2005-279082 A

However, as in Patent Documents 1 and 2, a three-dimensional gather having an absorber inside tends to have a stronger feeling of pressure on the wearer's skin than a three-dimensional gather having no absorber. Moreover, the leakage prevention effect when the wearer's movement is intense has not been sufficient yet.
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 that has less discomfort such as a feeling of pressure on the skin and is less prone to leakage such as side leakage.

In order to achieve the above object, the present invention employs the following configuration.
[1] An absorbent article for absorbing bodily fluids discharged from the wearer's inseam,
A top sheet that is at least partially liquid permeable, a back sheet, an absorber disposed between the top sheet and the back sheet, and an upright portion that stands on the opposite side of the absorber from the top sheet. A solid gather having a particulate absorbent that swells by absorbing liquid;
The particulate absorbent material is filled in an unfixed state in an internal space formed inside the upright portion,
The said standing part has a standing stretchable material isolated from the said interior space, It is comprised so that it may stand by the stretching force of this standing stretchable material, The absorbent article characterized by the above-mentioned.
[2] The absorbent article according to [1], wherein the standing stretchable material and the internal space are separated by a sheet.
[3] The absorbent article according to [2], wherein the standing stretchable material is in contact with a sheet that separates the standing stretchable material from the internal space.
[4] A pair of three-dimensional gathers facing each other is provided, and the standing parts of the three-dimensional gathers facing each other are such that at least a part of the inner surfaces facing each other is liquid permeable to the inner space, and opposite to the inner surfaces. The absorbent article according to any one of [1] to [3], wherein the outer side surface is liquid-impermeable to the inner space.
[5] One or more solid gathers facing each other are provided, and the standing parts of the opposed solid gathers are formed so as to extend from the wearer's inseam to both the abdomen and the back. [4] The absorbent article according to any one of [4].
[6] The internal space is divided into a plurality of closed spaces, and each of the plurality of closed spaces is filled with the particulate absorbent material according to any one of [1] to [5]. Absorbent article.
[7] The absorbent article according to any one of [1] to [6], further including an exterior body that covers the buttocks of the wearer on the opposite side of the backsheet from the absorber.

  The absorbent article of the present invention is less uncomfortable, such as a feeling of pressure on the skin, and hardly leaks such as side leakage.

It is a top view of the disposable diaper which concerns on 1st embodiment of this invention. It is II sectional drawing of the disposable diaper which concerns on 1st embodiment. It is a fragmentary perspective view at the time of cut | disconnecting the disposable diaper which concerns on 1st embodiment by II. It is II sectional drawing of the disposable diaper which concerns on 2nd embodiment of this invention. It is a fragmentary perspective view at the time of cut | disconnecting the disposable diaper which concerns on 2nd embodiment by II. It is II sectional drawing of the disposable diaper which concerns on 3rd embodiment of this invention. It is II sectional drawing of the disposable diaper which concerns on 4th embodiment of this invention. It is an expanded view of the disposable diaper which concerns on 5th embodiment of this invention. It is II-II sectional drawing of the disposable diaper which concerns on 5th embodiment.

FIGS. 1-8 used for description of each embodiment are the figure of the state which various elastic materials expanded for the convenience of description, ie, the figure where the three-dimensional gather etc. are not shrunk | reduced by the tension | tensile_strength of an elastic material. In the sectional view and the perspective view, the thickness direction is exaggerated and the three-dimensional gather is emphasized.
In the following description, for the sake of convenience, the direction from the wearer's back to the abdomen (vertical direction in FIGS. 1 and 7) is referred to as the length direction, and the direction orthogonal to the length direction (FIGS. 1 and 7). Is referred to as the width direction.

[First embodiment]
1-3 shows a disposable diaper according to the first embodiment of the present invention. The disposable diaper of this embodiment includes a top sheet 11, a back sheet 12, an absorbent body 13, a pair of three-dimensional gathers 20, a particulate absorbent material 30, an underbody elastic material 14, a waist elastic material 15, It consists of a fastening tape 16 and a front patch 17.

The back sheet 12 extends over the entire disposable paper diaper of the present embodiment in plan view. As shown in FIG. 1, the back sheet 12 has a wide width direction of a back side portion 12A (illustrated upper side) covering the wearer's back side and an abdominal side portion 12B (illustrated lower side) covering the wearer's abdominal side, The crotch part 12C covering the crotch of the wearer in the meantime has a substantially hourglass-like shape cut out in a concave curve.
The absorbent body 13 also has a wide width direction between a back side portion 13A (upper side in the drawing) covering the wearer's back side and an abdominal side portion 13B (lower side in the drawing) covering the wearer's belly side, and the wearer's inseam in between The crotch portion 13C to be covered has a substantially hourglass shape in which a concave curve is cut out.

The absorbent body 13 has a length direction shorter than that of the back sheet 12 and an overall width narrower than that of the back sheet 12, and is disposed on the back sheet 12 inside the periphery of the back sheet 12.
The boundary between the back side portion 13A of the absorbent body 13 and the crotch portion 13C is slightly more back than the boundary between the back side portion 12A and the crotch portion 12C of the backsheet 12. The boundary between the abdominal side portion 13B and the crotch portion 13C of the absorbent body 13 is set to the back side with respect to the boundary between the abdominal side portion 12B and the crotch portion 12C of the backsheet 12.
As shown in FIG. 2, the absorber 13 is comprised by the absorber main body 13a and the tissue 13b which covers the circumference | surroundings.

The top sheet 11 has a substantially rectangular shape whose length direction is the same as that of the back sheet 12 and whose width direction is slightly larger than the crotch part 13 </ b> C of the absorber 13. The top sheet 11 is disposed so as to cover the absorber 13 from the side opposite to the back sheet 12. That is, the absorber 13 is disposed between the top sheet 11 and the back sheet 12.
In the crotch part 13C of the absorbent body 13, the surface sheet 11 protrudes from the absorbent body 13 in the width direction, and is adhered to the back sheet 12 at the protruding part.
The top sheet 11 has a width direction narrower than that of the absorbent body 13 at the back side portion 13A and the ventral side portion 13B of the absorbent body 13, and both width direction sides of the absorbent body 13 protrude from the top sheet 11. The portion of the absorber 13 that protrudes from the top sheet 11 is covered with an outer sheet 21 that constitutes a three-dimensional gather 20 described later.
A waist stretchable material 15 is disposed at a position where the top sheet 11 protrudes from the absorber 13 on the back side. The waist elastic material 15 is arrange | positioned between the surface sheet 11 and the back seat | sheet 12 in the expansion | extension state, and bears the role which improves the adhesiveness with respect to a wearer's waist periphery.

  As shown in FIG. 1, the pair of three-dimensional gathers 20 (20a, 20b) face each other and both extend in the length direction. Among the three-dimensional gathers 20, the three-dimensional gathers 20a are arranged in the vicinity of the right leg in the wearer's crotch, and the three-dimensional gathers 20b are arranged in the vicinity of the left leg in the wearer's crotch.

As shown in FIG. 2, the three-dimensional gather 20 includes an outer sheet 21, an inner sheet 22, and an upright stretchable material 23. One end side in the width direction of the outer sheet 21 is bonded to the periphery of the back sheet 12, and a substantially central part is bonded to a portion of the top sheet 11 that protrudes from the absorber 13. Further, the other end side of the outer sheet 21 rises away from the top sheet 11, and its tip is bent in a curved shape.
In the vicinity where the outer sheet 21 is bonded to the back sheet 12, two left and right underbody elastic members 14 are arranged. The suspension elastic member 14 is bonded to the back sheet 12 in an extended state. The underbody stretchable material 14 extends in the length direction in the region of the crotch part 12C of the backsheet 12, and plays a role of improving the adhesion of the wearer to the underbody.

  One end side of the inner sheet 22 is bonded to a portion rising from the top sheet 11 of the outer sheet 21, the other end side is bent in a curved shape, and is bonded to the inner side of the bent portion at the tip of the other end side of the outer sheet 21. Has been. A central portion in the width direction of the inner sheet 22 is not bonded to the outer sheet 21 except for a seal part 25 described later, and an inner space 20 </ b> A is formed between the inner sheet 22 and the outer sheet 21.

The seal portion 25 is a portion where the inner sheets 22 or the outer sheet 21 and the inner sheet 22 are bonded together so as to partition the inner space 20A into a plurality of closed spaces in the length direction.
As shown in FIG. 3, the seal portion 25 extends to a portion where the outer sheet 21 is bonded to the top sheet 11.
A plurality of seal portions 25 are formed at predetermined intervals in the length direction. With the seal portion 25, the internal space 20A is divided into a plurality of closed spaces. Although there is no restriction | limiting in the space | interval and number of the seal parts 25, it is preferable to partition so that the length of one closed space may be 10-100 mm, and it is more preferable to partition so that it may be 20-50 mm.

  In addition, the standing stretchable material 23 is sandwiched between the bent front end portions of the outer sheet 21 and the inner sheet 22. The standing stretchable material 23 is sandwiched between the outer sheet 21 and the inner sheet 22 and extends in the length direction of the three-dimensional gather 20, and both ends thereof are respectively in the length direction of the absorber 13 as shown in FIG. It reaches the vicinity of both ends. The standing stretchable material 23 is bonded to both the outer sheet 21 and the inner sheet 22 in an extended state.

In the present embodiment, the upright portion 20 </ b> B includes a portion of the outer sheet 21 that rises from the topsheet 11, an inner sheet 22, and a standing stretchable material 23. The outer side in the width direction of the upright portion 20B is a base end portion 20C.
The particulate absorbent 30 is filled in an unfixed state in the internal space 20A formed inside the upright portion 20B. The particulate absorbent material 30 is filled in each of the plurality of closed spaces of the internal space 20A divided by the seal portion 25 in an unfixed state.

  Returning again to FIG. 1, two fastening tapes 16 are attached to the opposite sides of the outer sheet 21 at both ends in the width direction of the back side portion 12 </ b> A of the back sheet 12. Further, a front patch 17 is provided on the side opposite to the outer sheet 21 in the center in the width direction of the abdomen side portion 12B of the back sheet 12. The front patch 17 is composed of a sheet that has been appropriately peeled off so that the fastening tape 16 can be reattached when worn.

The top sheet 11 and the inner sheet 22 are liquid permeable so that the body fluid of the wearer can reach the absorber 13 or the particulate absorbent material 30. Moreover, since these contact | abut directly on a wearer's skin, it is preferable to provide a favorable touch feeling.
As a material for forming the top sheet 11 and the inner sheet 22, it is preferable to employ a non-woven fabric. As a kind of nonwoven fabric, the well-known nonwoven fabric manufactured by various manufacturing methods, such as a spun bond, a spun lace, a needle punch, a thermal bond, can be used. In particular, a nonwoven fabric in which a fiber web formed by a dry method is bonded by a thermal bond method is preferable because of having an appropriate stretchability. The nonwoven fabric bonded by the thermal bond method is a nonwoven fabric in which the formed fiber web is melted with heat to bond the fibers.

Both the back sheet 12 and the outer sheet 21 are liquid-impermeable so that the body fluid held by the absorbent body 13 and the particulate absorbent material 30 does not leak. Moreover, in order to prevent the stuffiness at the time of wearing, it is preferable that these are gas-permeable.
Examples of the liquid-impermeable sheet constituting the back sheet 12 and the outer sheet 21 include a sheet made of a thermoplastic resin such as polyethylene, polypropylene, and polyester. The liquid-impermeable sheet constituting the back sheet 12 and the outer sheet 21 may be a single-layer sheet or a sheet in which a plurality of layers are laminated. Further, the back sheet 12 and the outer sheet 21 may be formed by laminating a non-woven fabric on the outermost surface side of the liquid-impermeable sheet for the purpose of improving touch feeling. As a nonwoven fabric laminated | stacked on the outermost surface side, the nonwoven fabric similar to the material which forms the surface sheet 11 and the inner side sheet | seat 22 can be used.

A well-known material can be employ | adopted for the absorber main body 13a. For example, fluff pulp, superabsorbent polymer, or hydrophilic sheet can be used alone or in combination.
The absorbent body 13a is preferably formed in a single-layer or multiple-layer mat shape.
In the present embodiment, the absorbent body 13a is encapsulated with a tissue 13b. Therefore, it is also possible to configure the absorber body 13a with a material that is difficult to maintain a regularity, such as a superabsorbent polymer.

  The particulate absorbent material 30 is an absorbent swelling material that swells when absorbing liquid such as body fluid. Examples of the absorbent swelling material include superabsorbent polymers (hereinafter referred to as “SAP”). As SAP, sodium polyacrylate is preferable.

The average particle diameter of the particulate absorbent 30 is preferably 150 to 710 μm, and more preferably 300 to 500 μm. If the average particle size is too small, the particulate absorbent 30 may leak from the internal space 20A to the outside. On the other hand, if the average particle size is too large, the fluidity becomes insufficient.
Here, an average particle diameter is an average particle diameter calculated | required using JIS standard mesh sieve (inner diameter 150mm, depth 45mm) prescribed | regulated by JISZ8801.
The particle size distribution of the particulate absorbent 30 is preferably narrow. If the particle size distribution is too wide, the particulate absorbent 30 having a too small particle size may leak out from the internal space 20A. In addition, the particulate absorbent 30 having a too large particle diameter may hinder sufficient fluidity.

The specific measurement procedure for the average particle size is as follows. First, four sieves of 710 μm (22 mesh), 500 μm (30 mesh), 300 μm (50 mesh), and 150 μm (100 mesh) are stacked on a tray in ascending order of openings.
Next, 50 g of the sample (particulate absorbent material 30) is weighed, put into a top 710 μm sieve, covered and attached to a shaker (low-tap type tester), and the number of impulses is 165 times / min. Shake for 5 minutes under the condition of several 290 times / minute.
Thereafter, the mass of the sample on each sieve and the saucer is measured to a unit of 0.1 g, and the cumulative distribution is described on the graph to determine the average particle diameter and the like.
If the total mass of the samples on each sieve and the saucer has increased or decreased by 2% or more from the initial sample mass (50 g), repeat the measurement.

The filling amount of the particulate absorbent material 30 is not particularly limited, but it is preferably set to an amount that can sufficiently swell in the internal space 20A when the body fluid is absorbed. In other words, the volume of the internal space 20A is preferably a volume that allows the particulate absorbent material 30 to swell sufficiently.
On the other hand, it is preferable that the particulate absorbent material 30 swollen in the internal space 20 </ b> A when absorbing body fluid can apply pressure to the outer sheet 21 and the inner sheet 22 from the inside. In other words, the volume of the internal space 20A is preferably set to a volume that does not leave excessive voids when the particulate absorbent 30 swells.

  As the material of the standing stretchable material 23 and the suspension stretchable material 14, natural rubber, polyurethane-based, foamed polyurethane-based, styrene-based such as polystyrene, olefin-based such as polyethylene, polyester, styrene-butadiene elastic material, or the like is used. Further, the shape can be a thread shape, a belt shape, or the like.

As means for adhering the sheets to each other and means for fixing the stretchable material to the sheet, use of an adhesive such as a hot-melt adhesive, ultrasonic welding, heat welding, or the like can be employed.
As the hot-melt adhesive, a known adhesive basically composed of a base polymer, a tackifier, and a softener can be used. A rubber-based or olefin-based base polymer is generally used, but other adhesives such as cold glue and solvent can also be used.

  In order to make the wearer wear the disposable paper diaper of this embodiment, the back side portion 12A is placed under the wearer's back side, folded at the crotch 13C and the abdominal side portion 12B is applied to the wearer's abdomen, In this state, the fastening tape 16 is attached to an appropriate position of the front patch 17.

In the disposable paper diaper of the present embodiment, the particulate absorbent 30 is filled in the internal space 20A in an unfixed state, and therefore can flow according to the direction of the wearer's body. Therefore, the discomfort caused by the three-dimensional gather 20 pressing the wearer's skin can be reduced. In particular, before the particulate absorbent material 30 absorbs the body fluid, the volume of the particulate absorbent material 30 is small, so that the upright portion 20B has high flexibility and less discomfort due to compression.
Moreover, since the particulate absorbent 30 moves so that the amount on the lower side of the wearer's body increases, it is easy to receive body fluid.
Moreover, since the internal pressure with respect to the outer sheet | seat 21 and the inner sheet | seat 22 increases as the particulate absorber 30 absorbs a bodily fluid, combined with the force which the standing stretchable material 23 shrinks, the standing property of the standing part 20B increases. Therefore, the leakage prevention effect by the three-dimensional gather 20 is high.

The standing portion 20B can stand by the standing stretchable material 23 such that the dimension in the length direction on the top side is shortened relatively shorter than the dimension in the length direction on the base end portion 20C side.
In the present embodiment, the standing stretchable material 23 is isolated from the internal space 20 </ b> A filled with the particulate absorbent material 30 by the inner sheet 22. When the standing stretchable material 23 is in a state where it can contact the particulate absorbent material 30, the standing stretchable material 23 contracts, and the particulate absorbent material 30 enters into the ridge formed on the surface of the standing stretchable material 23. When the particulate absorbent material 30 that has entered the bag is swollen by body fluid, the standing stretchable material 23 is inhibited from shrinking, so that the standing property of the standing portion 20B is lowered.
In this embodiment, since the standing stretchable material 23 does not contact the particulate absorbent material 30, the particulate absorbent material 30 can absorb body fluid while maintaining the contracted state of the standing stretchable material 23. Therefore, the good standing property of the standing part 20B is obtained.

  Moreover, in this embodiment, each standing part 20B of the three-dimensional gather 20a and the three-dimensional gather 20b extends in the length direction and is arranged oppositely (from the wearer's inseam to both the abdomen and the back). Side leakage from both sides of the suspension can be prevented. Moreover, since a part of inner surface of each upright part 20B which opposes is formed only with the liquid-permeable inner sheet | seat 22, a bodily fluid can be absorbed in the particulate absorber 30 in 20 A of internal spaces. Further, the entire outer surface of each of the upstanding portions 20B facing each other is formed only by the liquid-impermeable outer sheet 21 or the inner sheet 22 laminated on the inner side of the outer sheet 21, so that bodily fluid is contained in the inner space. It is possible to prevent leakage from 20A to the outside in the width direction of each upright portion 20B. Furthermore, since the folded outer sheet 21 covers a part of the inner side beyond the top of each standing part 20B, it is possible to prevent body fluid from seeping out from the top of the standing part 20B and leaking to the outside.

  Furthermore, in this embodiment, the particulate absorbent material 30 is filled in each of the plurality of closed spaces of the internal space 20 </ b> A divided by the seal portion 25. Therefore, it is possible to prevent the particulate absorbent 30 from being excessively biased at any location in the length direction of the internal space 20A while ensuring the fluidity of the particulate absorbent 30. As a result, the wearer's discomfort due to excessive bias can be prevented, and a leak-proof effect can be exhibited over the entire length direction.

[Second Embodiment]
4 and 5 show a disposable diaper according to the second embodiment of the present invention. 4 and 5, the same components as those in FIGS. 2 and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.
The disposable diaper of this embodiment is the same as the disposable paper diaper of 1st embodiment except the point which changed the solid gather 20 (20a, 20b) into the solid gather 40 (40a, 40b). Therefore, for the plan view, reference numeral 20 (20a) and reference numeral 20 (20b) are replaced with reference numeral 40 (40a), reference numeral 40 (40b), and reference numeral 23 as reference numeral 43, respectively, and FIG.

As shown in FIG. 4, the three-dimensional gather 40 is comprised from the outer side sheet | seat 41, the inner side sheet | seat 42, and the standing elastic material 43 (43a-43e), respectively. One end side in the width direction of the outer sheet 41 is bonded to the periphery of the back sheet 12, and a substantially central portion is bonded to a portion of the top sheet 11 that protrudes from the absorber 13. Further, the other end side of the outer sheet 41 rises away from the top sheet 11 and is bent with a substantially 8-shaped trajectory so that its front end returns to the vicinity of the top sheet 11.
In the vicinity where the outer sheet 41 is bonded to the back sheet 12, two left and right underbody elastic members 14 are disposed.

The inner sheet 42 is bonded and fixed at a position where the outer sheet 41 rises from the top sheet 11 with one end sandwiched between the top sheet 11 and the outer sheet 41, and from there, the other end of the outer sheet 41 Standing up toward the side tip. Then, the outer sheet 41 is bonded from the tip on the other end side to the inner side where the outer sheet 41 is bent. The other end of the inner sheet 42 reaches the vicinity of the place where the outer sheet 41 rises from the top sheet 11, and has a substantially 8-shaped locus like the outer sheet 41.
A central portion of the inner sheet 42 in the shape of approximately 8 is a seal portion 46 which will be described later, and an internal space 40A is formed above and below the seal portion 46.

The seal portion 46 is a portion where the inner sheets 42 are bonded to each other so as to partition the inner space 40A into upper and lower closed spaces. As shown in FIG. 5, the seal portion 46 extends in the length direction.
In addition to the seal portion 46, a seal portion 45 is also formed. The seal portion 45 is a portion where the inner sheets 42 or the outer sheets 41 and the inner sheets 42 are bonded so as to partition the inner space 40A into a plurality of closed spaces in the length direction.
As shown in FIG. 5, the seal portion 45 extends to a portion where the outer sheet 41 is bonded to the top sheet 11.
A plurality of seal portions 45 are formed at predetermined intervals in the length direction. Although there is no restriction | limiting in the space | interval and number of the seal parts 45, It can be made to be the same as that of the seal part 25 of 1st embodiment.
By the seal portions 45 and 46, the internal space 40A is divided into a plurality of closed spaces in the vertical direction and the length direction.

  Moreover, the standing elastic material 43 (43a-43e) is pinched | interposed between the outer side sheet | seat 41 and the inner side sheet | seat 42 adhere | attached on the inner side. The standing stretchable material 43 is sandwiched between the outer sheet 41 and the inner sheet 42 and extends in the length direction of the three-dimensional gather 40, and both ends thereof are respectively in the length direction of the absorber 13 as shown in FIG. It reaches the vicinity of both ends. The standing stretchable material 43 is bonded to both the outer sheet 41 and the inner sheet 42 in an extended state.

In the present embodiment, the standing portion 40 </ b> B includes a portion of the outer sheet 41 that rises from the top sheet 11, an inner sheet 42, and a standing stretchable material 43. The outer side in the width direction of the upright portion 40B is a base end portion 40C.
The internal space 40A formed inside the upright portion 40B is filled with the particulate absorbent material 30 in an unfixed state. The particulate absorbent material 30 is filled in each of a plurality of closed spaces of the internal space 40A divided by the seal portions 45 and 46 in an unfixed state.

  The inner sheet 42 can be the same as the top sheet 11 and the inner sheet 22 of the first embodiment. Further, the outer sheet 41 can be the same as the back sheet 12 and the outer sheet 21 of the first embodiment. Moreover, as the standing stretchable material 43, a material having an appropriate stretch force made of the same material as the standing stretchable material 23 of the first embodiment can be used. The means for bonding the sheets and the means for fixing the elastic material to the sheets are the same as in the first embodiment.

The disposable paper diaper according to the present embodiment is also filled with the inner space 40A in a state where the particulate absorbent 30 is not fixed, so that the wearer has less discomfort and the leakage prevention effect by the three-dimensional gather 40 is high. Moreover, since the standing stretchable material 43 is isolated from the internal space 40A filled with the particulate absorbent material 30 by the inner sheet 42, good standing properties of the standing portion 40B can be obtained.
Also in the present embodiment, since the standing portions 40B of the three-dimensional gather 40a and the three-dimensional gather 40b extend in the length direction and are arranged to face each other, side leakage from both sides of the suspension can be prevented.

  Moreover, since a part of inner surface of each standing upright part 40B which is opposed is formed only by the liquid permeable inner sheet 42, the body fluid can be absorbed by the particulate absorbent 30 in the inner space 40A. In addition, the entire outer surface of each of the upstanding portions 40B facing each other is formed of only the liquid-impermeable outer sheet 41 or the inner sheet 42 laminated on the inner side of the outer sheet 41. It is possible to prevent leakage from 40A to the outside in the width direction of each upright portion 40B. Further, since the outer sheet 41 covers the vicinity of the inner surface sheet 11 beyond the top of each standing part 40B, it is possible to prevent body fluid from leaking out from the top of the standing part 40B.

  Further, in the present embodiment, the particulate absorbent material 30 is filled in each of the plurality of closed spaces of the internal space 40 </ b> A divided by the seal portions 45 and 46. Therefore, it is possible to prevent the particulate absorbent material 30 from being excessively biased at any location in the length direction or the vertical direction of the internal space 40A while ensuring the fluidity of the particulate absorbent material 30. As a result, the wearer's discomfort due to excessive bias can be prevented, and a leak-proof effect can be exhibited over the entire length direction.

[Third embodiment]
FIG. 6 shows a disposable diaper according to the third embodiment of the present invention. 6, the same components as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
The disposable diaper of this embodiment is the same as the disposable paper diaper of 1st embodiment except the point which changed the solid gather 20 (20a, 20b) into the solid gather 50 (50a, 50b). Therefore, regarding the plan view, reference numeral 20 (20a) and reference numeral 20 (20b) are replaced with reference numeral 50 (50a), reference numeral 50 (50b), and reference numeral 23, respectively, with reference numeral 53, and FIG.

As shown in FIG. 6, the three-dimensional gather 50 is comprised from the outer side sheet | seat 51, the inner side sheet | seat 52, and the standing elastic material 53 (53a-53c), respectively. One end side in the width direction of the outer sheet 51 is bonded to the periphery of the back sheet 12, and a substantially central part is bonded to a portion of the top sheet 11 that protrudes from the absorber 13. Further, the other end side of the outer sheet 41 rises away from the top sheet 11, and its tip is bent in a curved shape.
In the vicinity where the outer sheet 51 is bonded to the back sheet 12, two left and right underbody elastic members 14 are disposed.

In the vicinity of the outer sheet 51 rising from the top sheet 11, one end side of the inner sheet 52 is bonded and fixed to the top sheet 11, and then rises toward the other end of the outer sheet 51. Then, the outer sheet 51 is bonded to the folded inner side of the outer sheet 51 from the tip of the other end side.
A central portion in the width direction of the inner sheet 52 is not bonded to the outer sheet 51, and an internal space 50 </ b> A is formed between the inner sheet 52 and the outer sheet 51.

  Moreover, the standing elastic material 53 (53a-53c) is pinched | interposed between the outer side sheet | seat 51 and the inner side sheet | seat 52 adhere | attached on the inner side. The standing stretchable material 53 is sandwiched between the outer sheet 51 and the inner sheet 52 and extends in the length direction of the three-dimensional gather 50, and both ends thereof are in the length direction of the absorber 13 as shown in FIG. It reaches the vicinity of both ends. The standing stretchable material 53 is bonded to both the outer sheet 51 and the inner sheet 52 in an extended state.

In the present embodiment, the standing portion 50 </ b> B includes a portion of the outer sheet 51 that rises from the top sheet 11, an inner sheet 52, and a standing stretchable material 53. The outer side in the width direction of the standing portion 50B is a base end portion 50C.
The particulate absorbent 30 is filled in an unfixed state in the internal space 50A formed inside the upright portion 50B.

  The inner sheet 52 can be the same as the top sheet 11 and the inner sheet 22 of the first embodiment. The outer sheet 51 can be the same as the back sheet 12 and the outer sheet 21 of the first embodiment. Further, as the standing stretchable material 53, a material having an appropriate stretch force made of the same material as the standing stretchable material 23 of the first embodiment can be used. The means for bonding the sheets and the means for fixing the elastic material to the sheets are the same as in the first embodiment.

The disposable paper diaper of the present embodiment also has less wearer discomfort and high leakage prevention effect by the three-dimensional gather 50 because the particulate absorbent 30 is filled in the internal space 50A in an unfixed state. Moreover, since the standing stretchable material 53 is isolated from the internal space 50A filled with the particulate absorbent material 30 by the inner sheet 52, good standing properties of the standing portion 50B can be obtained.
Also in this embodiment, since the standing portions 50B of the three-dimensional gathers 50a and the three-dimensional gathers 50b extend in the length direction and face each other, side leakage from both sides of the suspension can be prevented.

  Moreover, since a part of inner surface of each standing upright part 50B is formed only with the liquid-permeable inner sheet | seat 52, a bodily fluid can be made to be absorbed by the particulate absorber 30 in the internal space 50A. Further, since the entire outer surface of each of the upstanding portions 50B facing each other is formed only by the liquid-impermeable outer sheet 51 or by laminating the inner sheet 52 inside the outer sheet 51, the body fluid is contained in the inner space. It is possible to prevent leakage from 50A to the outside in the width direction of each upright portion 50B. Furthermore, since the outer sheet 51 covers part of the inner side beyond the top of each upright portion 50B, it is possible to prevent body fluid from leaking out from the top of the upright portion 50B.

[Fourth embodiment]
FIG. 7 shows a disposable diaper according to the fourth embodiment of the present invention. 7, the same components as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
The disposable diaper of this embodiment is the same as the disposable paper diaper of 1st embodiment except the point which changed the solid gather 20 (20a, 20b) into the solid gather 90 (90a, 90b). Therefore, regarding the plan view, reference numeral 20 (20a) and reference numeral 20 (20b) are replaced with reference numeral 90 (90a), reference numeral 90 (90b), and reference numeral 23, respectively, with reference numeral 93, and FIG.

As shown in FIG. 7, the three-dimensional gathers 90 are each composed of an outer sheet 91 and a standing stretchable material 93. One end side in the width direction of the outer sheet 91 is bonded to the periphery of the back sheet 12, and a substantially central portion is bonded to a portion of the top sheet 11 that protrudes from the absorber 13. Further, the other end side of the outer sheet 91 is bent away from the surface sheet 11 and bent so that the front end thereof returns to the surface sheet 11. The front end of the outer sheet 91 is bonded to the top sheet 11.
In the vicinity where the outer sheet 91 is bonded to the back sheet 12, two left and right underbody stretchable members 14 are disposed.

A seal portion 96 is formed in the vicinity of the top portion of the outer sheet 91 that rises away from the top sheet 11. The seal portion 96 is a portion where the outer sheets 91 are bonded together so as to partition the space formed between the outer sheet 91 and the top sheet 11 into upper and lower closed spaces. The seal portion 96 extends in the length direction.
A closed space formed below the seal portion 96 is an internal space 90A. Further, the closed space formed above the seal portion 96 is an isolation space 90D.

  A standing elastic member 93 is inserted into the isolation space 90D and extends in the length direction of the three-dimensional gather 90, and both ends thereof are close to both ends in the length direction of the absorber 13, as shown in FIG. Has reached. The standing stretchable material 93 is bonded to the outer sheet 91 in a stretched state.

In the present embodiment, the standing portion 90 </ b> B includes a portion of the outer sheet 91 that rises from the top sheet 11 and a standing stretchable material 93. The outer side in the width direction of the upright portion 90B is a base end portion 90C.
In the internal space 90A formed inside the upright portion 90B, the particulate absorbent material 30 is filled in an unfixed state.

  The outer sheet 51 can be the same as the back sheet 12 and the outer sheet 21 of the first embodiment. Moreover, as the standing stretchable material 93, a material having an appropriate stretch force made of the same material as the standing stretchable material 23 of the first embodiment can be used. The means for bonding the sheets and the means for fixing the elastic material to the sheets are the same as in the first embodiment.

The disposable paper diaper of the present embodiment also has less wearer discomfort and high leakage prevention effect by the three-dimensional gather 50 because the particulate absorbent 30 is filled in the internal space 90A in an unfixed state. Further, since the isolation space 90D in which the standing stretchable material 53 is inserted is isolated from the internal space 90A filled with the particulate absorbent material 30 by the seal portion 96, good standing property of the standing portion 90B can be obtained.
Also in this embodiment, since the standing portions 90B of the three-dimensional gather 90a and the three-dimensional gather 90b extend in the length direction and are arranged to face each other, side leakage from both sides of the suspension can be prevented.

  Moreover, since the lower end of each standing upright part 90B is in contact with the topsheet 11, the body fluid can be absorbed by the particulate absorbent 30 in the internal space 90A through 11. In addition, since the entire outer surface of each of the upright portions 90B facing each other is formed of only the liquid-impermeable outer sheet 91, body fluid leaks from the internal space 90A to the outside in the width direction of the upright portions 90B. Can be prevented. Further, since the outer sheet 91 covers the inner side beyond the tops of the standing parts 50B, it is possible to prevent body fluid from leaking out from the tops of the standing parts 50B.

[Fifth embodiment]
8 and 9 show a disposable diaper according to the fifth embodiment of the present invention. The disposable diaper according to the present embodiment includes a top sheet 61, a back sheet 62, an absorber 63, a pair of three-dimensional gathers 70 (70a, 70b), a particulate absorbent 30, and an exterior body 80. Has been.
The disposable diaper according to the present embodiment has a width side end portion 80A (upper side in the drawing) of the back side portion 80A (upper side in the drawing) covering the wearer's back side and an abdominal side portion 80B (lower side in the drawing) covering the abdomen side of the wearer. This is a so-called pants-type disposable diaper in which both ends in the width direction are joined in advance.

As shown in FIG. 8, the exterior body 80 has a wide crotch portion 80C covering the wearer's crotch between the back side portion 80A (upper side in the drawing) and the abdominal side portion 80B (lower side in the drawing). It has a substantially hourglass shape cut out.
Also, joint portions 81a and 81b are provided at the left and right end portions of the back side portion 80A, and joint portions 82a and 82b are provided at the left and right end portions of the ventral side portion 80B. The joint portion 81a, the joint portion 82a, and the joint portion 81b are provided. The joining portions 82b are joined with the wearer side as the inside.

The back sheet 62 has a substantially rectangular shape, and is arranged on the wearer side of the exterior body 80 so as to extend from the wearer's crotch to both the abdomen and the back. The length direction of the back sheet 62 coincides with the length direction of the exterior body 80.
The absorber 63 is also substantially rectangular and is disposed on the wearer side of the backsheet 62 so as to extend from the wearer's crotch to both the abdomen and the back.
The absorbent body 63 has a length direction shorter than that of the back sheet 62 and an overall width narrower than that of the back sheet 62, and is disposed on the back sheet 62 inside the periphery of the back sheet 12.

As shown in FIG. 9, the absorbent body 63 includes an absorbent body 63a, and an upper tissue 63b and a lower tissue 63c covering the periphery thereof.
That is, the lower tissue 63c is wider than the absorbent body 63a, and covers both sides of the absorbent body 63a on the back sheet 62 side and also covers both side edges of the absorbent body 63a on the surface sheet 61 side. Is wrapped. The upper tissue 63b is slightly narrower than the absorbent body 63a, and is placed on the topsheet 61 side of the absorbent body 63a so as to overlap the folded portions on both sides of the lower tissue 63c. The overlapping portion of the upper tissue 63b and the lower tissue 63c is bonded with an adhesive.

  The top sheet 61 has a substantially rectangular shape in which the shape and size in plan view are substantially the same as the back sheet 62. The surface sheet 61 is disposed so as to cover the absorber 63 from the side opposite to the back sheet 62, and a portion protruding from the surrounding absorber 63 is bonded to the back sheet 62. That is, the absorber 63 is disposed between the top sheet 61 and the back sheet 62.

  As shown in FIG. 8, the pair of three-dimensional gathers 70 (70 a and 70 b) face each other and extend in the length direction along both side edges of the absorber 63. Among the three-dimensional gathers 70, the three-dimensional gathers 70a are arranged in the vicinity of the right leg in the wearer's crotch, and the three-dimensional gathers 70b are arranged in the vicinity of the left leg around the wearer's crotch.

As shown in FIG. 9, the three-dimensional gather 70 includes an outer sheet 71, an inner sheet 72, a standing stretchable material 73, and a base end stretchable material 74. The outer sheet 71 is bonded and fixed in a state in which one end side in the width direction goes around the lower edge of the back sheet 62 and is sandwiched between the back sheet 62 and the exterior body 80. Further, the substantially central portion is bonded to the portion of the top sheet 61 that protrudes from the absorber 63. Further, the other end side of the outer sheet 71 rises away from the top sheet 61, and its tip is bent in a curved shape.
A base end stretchable material 74 is disposed at a position where the outer sheet 71 wraps around the lower side of the back sheet 62. The base end elastic member 74 is bonded to the outer sheet 71 in an extended state. The proximal end elastic member 74 extends in the length direction along the side edge of the absorbent body 63 and absorbs the curved surface extending from the back side of the wearer's body to the ventral side through the crotch. Has a role to keep 63.

  One end side of the inner sheet 72 is bonded to a portion rising from the surface sheet 61 of the outer sheet 71, the other end side is bent in a curved shape, and the inner sheet 72 is bonded to the inside of the bent portion at the tip of the other end side of the outer sheet 71. Has been. A central portion in the width direction of the inner sheet 72 is not bonded to the outer sheet 71, and an internal space 70 </ b> A is formed between the inner sheet 72 and the outer sheet 71.

  Further, a standing stretchable material 73 is sandwiched between the bent front end portions of the outer sheet 71 and the inner sheet 72. The standing stretchable material 73 is sandwiched between the outer sheet 71 and the inner sheet 72 and extends in the entire length direction of the three-dimensional gather 70. The standing stretchable material 73 is bonded to both the outer sheet 71 and the inner sheet 72 in an extended state.

In the present embodiment, the standing portion 70 </ b> B includes a portion of the outer sheet 71 that rises from the top sheet 61, an inner sheet 72, and a standing stretchable material 73. The outer side in the width direction of the standing portion 70B is a base end portion 70C.
The internal space 70A formed inside the upright portion 70B is filled with the particulate absorbent material 30 in an unfixed state.

The exterior body 80 is disposed on the opposite side of the back sheet 62 from the absorber 63 and is bonded to the outer sheet 71 that wraps around the lower side of the periphery of the back sheet 62.
The exterior body 80 includes an inner sheet 82, an outer sheet 83, and a large number of exterior stretchable materials 84 (84a to 84h) disposed between these sheets. The exterior elastic member 84 is fixed to one or both of the inner sheet 82 and the outer sheet 83 in an expanded state.

In the present embodiment, as shown in FIG. 8, as the exterior stretchable material 84, the abdominal waist stretchable material 84a, the ventral waistline stretchable material 84b, the backside waist stretchable material 84c, the backside waistline stretchable material 84d, the ventral side. A crotch elastic member 84e and a back crotch elastic member 84f are provided. These are each arranged so as to cross the width direction of the outer package 80.
Further, as the exterior stretchable material 84, the stretchable material 84g around the abdominal leg crosses a part of the stretchable material 84b around the abdomen and the stretchable material 84e between the abdomen and passes through the crotch from one leg around the abdomen. And it arrange | positions so that it may reach to the other leg periphery.

In addition, while the back leg elastic member 84h intersects a part of the back waist elastic member 84d and the back crotch elastic member 84f, the other leg passes through the crotch from one leg around the back side. It is arranged to reach around.
The abdominal crotch elastic member 84e and the back crotch elastic member 84f are appropriately arranged in the vicinity of intersecting the abdominal leg elastic member 84g or the back leg elastic member 84h so that excessive tightening does not occur locally. Disconnected.

The surface sheet 61 and the inner sheet 72 can be the same as the surface sheet 11 and the inner sheet 22 of the first embodiment, respectively. Further, the back sheet 62, the outer sheet 71, and the inner sheet 82 and the outer sheet 83 can all be the same as the back sheet 12 and the outer sheet 21 of the first embodiment. Moreover, the thing similar to the absorber main body 13a of 1st embodiment can be used for the absorber main body 63a.
As the standing stretchable material 73 and other stretchable materials, those having an appropriate stretch force made of the same material as the standing stretchable material 23 of the first embodiment can be used.
The means for bonding the sheets and the means for fixing the elastic material to the sheets are the same as in the first embodiment.

The disposable paper diaper of the present embodiment is also filled with the internal space 70 </ b> A in a non-fixed state with the particulate absorbent material 30, so that there is little discomfort for the wearer and the leakage prevention effect by the three-dimensional gather 70 is high. In addition, since the standing stretchable material 73 is isolated from the internal space 70A filled with the particulate absorbent material 30 by the inner sheet 72, a good standing property of the standing portion 70B can be obtained.
Also in this embodiment, since the standing portions 50B of the three-dimensional gather 70a and the three-dimensional gather 70b extend in the length direction and are arranged to face each other, side leakage from both sides of the suspension can be prevented.

  Moreover, since a part of the inner side surface of each upright part 70B which opposes is formed only by the liquid-permeable inner sheet | seat 72, a bodily fluid can be absorbed by the particulate absorbent material 30 in 70 A of internal spaces. In addition, the entire outer surface of each of the upstanding portions 70B facing each other is formed of only the liquid-impermeable outer sheet 71 or the inner sheet 72 laminated on the inner side of the outer sheet 71. It is possible to prevent leakage from 70A to the outside in the width direction of each upright portion 70B. Furthermore, since the outer sheet 71 covers a part of the inner side beyond the top of each standing part 70B, it is possible to prevent body fluid from leaking out from the top of the standing part 70B.

[Other Embodiments]
In the first embodiment, the second embodiment, the third embodiment, and the fifth embodiment, the standing stretchable material is in contact with the sheet that separates the standing stretchable material from the internal space. Alternatively, the sheet may be spaced apart from the sheet to be isolated. For example, the distal end side of the outer sheet 21 of the first embodiment may be stretched upward from the inner sheet 22 without being bent, and the standing stretchable material 23 may be disposed at the stretched distal end.
Further, the sheet to be isolated may be liquid permeable or liquid impermeable. Moreover, what isolates a standing elastic material and internal space is not restricted to a sheet | seat. For example, a seal portion such as the seal portion 91 of the fourth embodiment or an absorbent material fixed to a base material may be used.

Moreover, in said 1st embodiment, 2nd embodiment, 3rd embodiment, 5th embodiment, although one part of the inner surface which an upright part opposes was made liquid-permeable with respect to internal space, all It may be liquid permeable. Moreover, it is good also considering the whole inner surface which the standing part opposes as liquid impermeability with respect to internal space. For example, the inner sheet 52 of the third embodiment can be liquid-impermeable. In this case, the body fluid can reach the particulate absorbent in the internal space via the top sheet 11.
In the fourth embodiment, the entire outer sheet 91 is liquid-impermeable, but only a part of the inner surface may be liquid-permeable and the other may be liquid-impermeable. For example, by partially subjecting a liquid-permeable nonwoven fabric to water-repellent treatment, one sheet can be partially liquid-permeable and the rest can be liquid-impermeable. When a part of the inner side surface of the outer sheet 91 is liquid permeable, the tip of the other end side of the outer sheet 91 is not attached to the surface sheet 11 but to the portion where the outer sheet 91 rises away from the surface sheet 11. Also good.

In the first to fourth embodiments, the topsheet 11 does not cover the entire absorbent body 13 and a part of the absorbent body 13 protrudes in the width direction of the topsheet 11. A substantially hourglass shape that is slightly larger than the absorber 13 may be used, and the entire absorber 13 may be covered with the topsheet 11.
In each of the above embodiments, the back sheet is liquid-impermeable. However, when a liquid-impermeable sheet (exterior body 80) is further laminated as in the fifth embodiment, for example, It may be a sex back sheet.

In each of the above embodiments, each has a pair of solid gathers. However, the number of solid gathers is not limited. For example, a pair of solid gathers is formed outside the solid gathers of each embodiment. May be.
Further, the three-dimensional gathers are not necessarily paired. Moreover, it does not necessarily need to be formed so as to extend from the wearer's crotch to both the abdomen and the back. For example, when there is a concern about leakage from the back waist, a three-dimensional gather may be provided in the width direction along the back end of the absorber.
Moreover, in the said embodiment, although all set it as the aspect which stands up and the standing part inclines to the inner side of an absorber, it does not interfere even if it stands upright and inclines to the outer side of an absorber.

Moreover, in each said embodiment, although the standing part was formed in the width direction peripheral position of an absorber at least in the part used as a wearer's inseam, the position of an upright part may be inside or the outer side of the width direction peripheral position of an absorber. Good.
Moreover, the standing part does not need to extend linearly. For example, the standing part 20 </ b> B of the first embodiment may be formed along the circumferential edge of the substantially hourglass-shaped absorber 13.

In addition, whether or not the internal space is divided into a plurality of closed spaces is arbitrary. For example, in the first embodiment and the second embodiment, a single internal space may be used without providing a seal portion. Further, in the third embodiment, the fourth embodiment, and the fifth embodiment, a seal portion similar to the first embodiment or the second embodiment may be provided, and the internal space may be divided into a plurality of closed spaces.
Moreover, when providing the seal part which divides an internal space into several closed space in the length direction, there is no restriction | limiting in particular about how far the width direction both ends of a seal part are extended. For example, the seal portion 25 and the seal portion 45 may be extended to the outer edge in the width direction of the outer sheet.

  Moreover, in 1st embodiment-4th embodiment, although it was set as the aspect which a wearer wears using a fastening tape, you may apply the solid gathers of these embodiment to what is called a pants-type disposable diaper. Moreover, you may apply the structure which has the exterior body which covers a collar part like 5th embodiment to the disposable diaper which a wearer wears using a fastening tape.

Moreover, the absorbent article of this invention is not limited to a disposable paper diaper, It can be used as a urine pad, a sanitary product, etc.
What is necessary is just to set the external shape of the absorbent article of this invention suitably according to the use. In the case of disposable paper diapers as in the above embodiments, it is preferable that the back sheet or the exterior body has a substantially hourglass shape that can cover the entire buttocks of the wearer in a plan view or in an unfolded state.
For example, in the case of a urine pad or sanitary product, the back sheet or the exterior body should be a size that can be placed in the wearer's underwear in a plan view or in an unfolded state, and has a substantially hourglass shape or rectangular shape. Is preferred.
Moreover, in urine pads, sanitary products, and the like, it is preferable to provide an adhesive layer and a release sheet on the back sheet side for adhering to the wearer's underwear.

11 ... surface sheet,
12 ... Back sheet,
13, 63 ... absorber,
14 ... Suspension elastics,
16 ... Fastening tape,
17 ... Front patch,
20, 40, 50, 70, 90 ... solid gathers,
20A, 40A, 50A, 70A, 90A ... internal space,
20B, 40B, 50B, 70B, 90B ... Standing part,
20C, 40C, 50C, 70C, 90C ... proximal end,
90D ... Isolation space,
21, 41, 51, 71, 91 ... outer sheet,
22, 42, 52, 72 ... inner sheet,
23, 43, 53, 73, 93 ... Standing elastic material,
25, 45, 46, 96 ... seal part,
30 ... Particulate absorbent material,
74: Base end elastic member,
80 ... exterior body,
81 ... Inner sheet,
82 ... outer sheet 83,
84 ... Exterior elastic material

Claims (7)

An absorbent article for absorbing bodily fluids discharged from the wearer's crotch,
A top sheet that is at least partially liquid permeable, a back sheet, an absorber disposed between the top sheet and the back sheet, and an upright portion that stands on the opposite side of the absorber from the top sheet. A solid gather having a particulate absorbent that swells by absorbing liquid;
The particulate absorbent material is filled in an unfixed state in an internal space formed inside the upright portion,
The said standing part has a standing stretchable material isolated from the said interior space, It is comprised so that it may stand by the stretching force of this standing stretchable material, The absorbent article characterized by the above-mentioned.   The absorbent article according to claim 1, wherein the upright stretchable material and the internal space are separated by a sheet.   The absorbent article according to claim 2, wherein the standing stretchable material is in contact with a sheet that separates the standing stretchable material and the internal space.   One or more solid gathers facing each other are provided, and the standing part of the opposed solid gathers is an outer side which is liquid permeable to the internal space and at least a part of the opposed inner side surfaces is opposite to the inner side surfaces. The absorbent article according to any one of claims 1 to 3, wherein a side surface is liquid-impermeable to the internal space.   One or more of the three-dimensional gathers which oppose each other are provided, and the standing part of the said three-dimensional gathers which oppose is formed so that it may extend from a wearer's inseam to both abdominal side and back side. An absorbent article according to any one of the above.   The absorbent article according to any one of claims 1 to 5, wherein the internal space is divided into a plurality of closed spaces, and each of the plurality of closed spaces is filled with the particulate absorbent material.   Furthermore, the absorbent article as described in any one of Claims 1-6 provided with the exterior body which covers a wearer's buttocks on the opposite side to the said absorber of the said back seat | sheet.

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