JP5183316B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article that receives excrement from a wearer.

  Conventionally, absorbent articles such as light incontinence absorbent pads used by attaching to disposable diapers and underwear are provided with a pair of side walls (so-called three-dimensional gathers) that stand toward the wearer on both sides in the width direction. Thus, leakage of excrement such as urine is prevented.

  For example, in the absorbent article of Patent Document 1, the leak-proof walls provided on both sides in the width direction are a base wall portion that stands up toward the wearer, and a planar shape that is connected to the upper end portion of the base wall portion. In order to prevent leakage of urine and the like, the elastic elastic part is provided to fit the wearer's skin planarly. In the absorbent article of Patent Document 1, a plurality of elastic yarns extending in the longitudinal direction are joined to both ends in the width direction of the planar elastic stretchable part and a portion therebetween.

  Moreover, in the absorbent article of patent document 2, in the barrier cuff formed by laminating two layers of liquid-proof sheets, the two layers of liquid-proof sheets are joined at a linear joint extending in the longitudinal direction. Thus, a plurality of hollow portions extending in the longitudinal direction are formed between the two layers of liquid-proof sheets, and elastic yarns are arranged in these hollow portions without being bonded to the liquid-proof sheets.

  In the absorbent article of patent document 3, the center part and both side part of the width direction of a top sheet are joined to a base layer (absorption core) or a back sheet over the full length of a longitudinal direction, The said center part and both side parts An elastic yarn extending in the longitudinal direction is disposed between the top sheet and the base layer in the non-bonded region therebetween. The elastic yarn is bonded to the top sheet and the base layer at both ends, and a portion between the both ends is a non-bonded portion. In the absorbent article of Patent Document 3, when the elastic yarn contracts, the non-adhesion region of the top sheet rises away from the base layer, and a floating inner cuff is formed.

On the other hand, in the disposable diaper of Patent Document 4, elastic yarns are inserted into the three tubular parts formed between the top sheet and the back sheet on both the left and right sides of the crotch without being bonded to each other. Leg gathers are formed by contraction of the elastic yarn.
Japanese Patent No. 3919638 International Publication No. WO95 / 07063 Pamphlet Japanese Patent No. 2941290 Japanese Patent No. 3479383

  By the way, in the absorbent article in which the flat surface portion is provided on the side wall portion as in Patent Document 1, when the flat surface portion is deformed by rolling or the like, the flat surface portion is partially separated from the circumference of the wearer's leg, There is a risk that urine or the like leaks from the gap between the flat portion and the wearer's skin. Moreover, since several elastic yarn is joined over the full width of a plane part, these elastic yarns hit a wearer's skin strongly, and there exists a limit in the improvement of the wearing feeling of an absorbent article.

  The present invention has been made in view of the above problems, and in the pair of side wall portions of the absorbent article, the shape stability of the planar portion is improved to improve the adhesion of the planar portion to the wearer and the planar portion is flexible. The purpose is to improve the feeling of wear by improving the nature.

The invention according to claim 1 is an absorbent article that receives excrement from a wearer, and a substantially sheet-like main body portion in which an absorption core is disposed between a back sheet and a top sheet, and the main body portion And a pair of side sheets provided over substantially the entire length in the longitudinal direction of the main body, and each of the pair of side sheets is provided with a fold line provided over the entire length in the longitudinal direction. The side wall portion includes: a band-like joint portion joined to the main body portion; and a side wall portion that is a part on the other side of the fold line, and a part of the side wall portion rises from the main body portion. Two fixed portions fixed on the joint portion at both ends in the longitudinal direction, and an upright portion that is continuous from the two fixed portions between the two fixed portions and rises from the fold line, The two fixed A flat portion that is continuous from the two fixed portions between the portions, spreads in the width direction of the main body portion perpendicular to the longitudinal direction from the upper end of the upright portion, and is laminated with two sheet portions; and It is disposed in an extended state between the two sheet portions of the planar portion over almost the entire length in the longitudinal direction, and both end portions in the longitudinal direction are joined to at least one of the two fixed portions and the planar portion. And a belt-like elastic member that forms a gather by shrinking the flat portion by shrinking the intermediate portion between the both end portions to be non-joined with the flat portion, and the upstanding portion includes the main body. Rising from a position on the main body part away from the side edge of the part, and the flat part extends outward in the width direction from the upper end of the rising part, and in the flat part, outside the flat part Edge or It said elastic member is disposed at a remote location.

  Invention of Claim 2 is an absorbent article of Claim 1, Comprising: The said elastic member is joined to the said 2 fixing | fixed part in the said both ends of the said longitudinal direction, and the said plane part is The flat part is not joined over the entire length in the longitudinal direction, and the two sheet parts of the planar part are not joined over the entire length in the longitudinal direction.

  The invention according to claim 3 is the absorbent article according to claim 1 or 2, wherein the elastic member is formed of a cloth-like member and is overlapped and joined to each other. And a plurality of elastic yarns extending substantially parallel and spaced along the longitudinal direction between the two belt-like portions and joined to the two belt-like portions.

Invention of Claim 4 is an absorbent article in any one of Claim 1 thru | or 3 , Comprising: In the state which extended the said side wall part in the said longitudinal direction, it is non-joining with the said plane part of the said elastic member The length of the intermediate portion is 65% or more and 90% or less of the entire length of the elastic member.

In this invention, while improving the shape stability of a plane part and improving the adhesiveness of the plane part with respect to a wearer, the softness | flexibility of a plane part can be improved and a wear feeling can be improved. Further, in the invention of claim 3, as possible out to enhance the flexibility of the planar portion.

  FIG. 1 is a plan view showing an absorbent article 1 according to an embodiment of the present invention, and the absorbent article 1 is attached to a wearer side of an undergarment that is an exterior article worn by the wearer. It is an absorption pad for light incontinence that receives excrement such as urine from a person. The absorbent article 1 is an absorbent pad having a display absorption amount of about 200 ml (milliliter) or less in a package or the like. In the present embodiment, the display absorption amount of the absorbent article 1 is 20 ml or more and 40 ml or less. However, the actual absorption amount of the absorbent article 1 is larger than the display absorption amount. In FIG. 1, the absorbent article 1 is drawn with the surface in contact with the wearer (that is, the wearer side) facing forward.

  FIG. 2 is a cross-sectional view of the absorbent article 1 cut along a plane perpendicular to the longitudinal direction of the absorbent article 1 (ie, the vertical direction in FIG. 1) at the position AA shown in FIG. FIG. 3 is a cross-sectional view of the absorbent article 1 taken along a plane perpendicular to the longitudinal direction at a position BB in the vicinity of the upper end in FIG. In the absorbent article 1, the site | part of the lower edge part vicinity in FIG. 1 also has the structure similar to the cross section shown in FIG.

  As shown in FIG. 1 and FIG. 2, the absorbent article 1 is a substantially sheet-like main body in which a back sheet 23, an odor control sheet 24, an absorbent core 22 and a top sheet 21 are laminated in order from the side opposite to the wearer side. And a pair of side sheets 3 provided over substantially the entire length in the longitudinal direction of the main body 2 on both sides of the main body 2 (that is, on both sides in the width direction perpendicular to the longitudinal direction). In the main body 2, the wearer-side main surface of the absorbent core 22, which is an absorbent body disposed between the topsheet 21 and the backsheet 23, is covered by the topsheet 21. The opposite main surface is covered with the back sheet 23. The top sheet 21 and the back sheet 23 are joined to each other around the absorbent core 22 and the odor control sheet 24 by a hot melt adhesive or the like. In FIG. 2, for convenience of illustration, each configuration of the main body 2 and the side sheet 3 are drawn separately (the same applies to FIGS. 3 and 5 to 7).

  The top sheet 21 is a liquid-permeable sheet material, for example, a non-woven fabric formed of hydrophilic fibers, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics. As hydrophilic fibers forming these nonwoven fabrics, cellulose, rayon, cotton, or the like is usually used. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with a surfactant may be used. Alternatively, a plastic film having an aperture may be used.

  The absorbent core 22 includes two layers of core members 221 and 222 stacked in the thickness direction. Each of the core members 221 and 222 is obtained by mixing a hydrophilic fiber (for example, pulverized pulp fiber or cellulose fiber) with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)). It is formed by wrapping with a covering sheet such as the like, and absorbs moisture that has passed through the top sheet 21 and quickly fixes it. The cover sheet that wraps the hydrophilic fiber is bonded to the hydrophilic fiber and the water-absorbing polymer with a hot-melt adhesive to prevent the hydrophilic fiber from losing its shape and the water-absorbing polymer from falling off (especially after water absorption). To do.

  In addition, the structure of the core members 221 and 222 is not limited to the above structure, and each core member is formed by, for example, fixing a granular superabsorbent polymer between two nonwoven fabrics with a hot melt adhesive or the like. The two nonwoven fabrics may be joined by a hot melt adhesive or heat seal. In the core member having such a structure, the superabsorbent polymer is fixed to a plurality of regions each having a strip shape continuously extending in the longitudinal direction and arranged in the width direction, and gaps between the plurality of regions (that is, In the non-existing region of the superabsorbent polymer), it is preferable that the two non-woven fabrics are joined by heat sealing or the like so that the plural superabsorbing polymer regions are individually sealed. Moreover, the absorption core 22 may be comprised by one core member, for example.

  The back sheet 23 is a water-repellent or liquid-impervious plastic film, and prevents excrement that has permeated through the top sheet 21 from seeping out of the main body 2. From the viewpoint of preventing wear of the absorbent article 1 and improving the comfort of the wearer, it is preferable that a plastic film having moisture permeability (that is, air permeability) is used as the back sheet 23. As the back sheet 23, a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric) or a water-repellent or liquid-impervious plastic film is laminated on the wearer side of the nonwoven fabric. Laminated sheets may be used.

  The odor control sheet 24 is a hydrophilic sheet member containing an odor control agent, and as the hydrophilic fiber forming the odor control sheet 24, for example, cellulose or pulp is used. As the deodorant, an inorganic porous crystal such as a zeolite carrying a metal (for example, silver, copper, zinc, iron, nickel cobalt, palladium, platinum) is preferably used.

  As shown in FIGS. 1 and 2, each of the pair of side sheets 3 is partially joined to a side sheet main body 31 that is a water-repellent or liquid-impervious sheet member by a belt-like elastic member 32 extending in the longitudinal direction. Is formed. In the present embodiment, no elastic member other than the elastic member 32 is joined to the side seat body 31. The side sheet body 31 is formed of, for example, a spunbond nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric, or an air-through nonwoven fabric. The side sheet main body 31 may be formed of a plastic film or a laminated sheet in which the nonwoven fabric and the plastic film are laminated. In this case, the absorbent article 1 is obtained by using a plastic film having moisture permeability. This prevents stuffiness and improves the wearer's comfort.

  FIG. 4 is an enlarged cross-sectional view of the elastic member 32 in FIG. As shown in FIG. 4, the elastic member 32 includes two belt-like members 321 and 322 formed of a nonwoven fabric, and two elastic yarns 323 extending in the longitudinal direction. The two strip members 321 and 322 extend in the longitudinal direction and are overlapped and joined to each other by a hot melt adhesive or the like. The two elastic yarns 323 are arranged between the two belt-like members 321 and 322 in a substantially parallel and spaced manner along the longitudinal direction, and are joined to the two belt-like members 321 and 322 in an extended state. The As the elastic yarn 323, polyurethane yarn, thread-like natural rubber, or the like is used. In the present embodiment, the width of the elastic member 32 is 5 mm to 70 mm (more preferably, 8 mm to 65 mm).

  The elastic member 32 is not necessarily formed by the two belt-like members 321 and 322. For example, one belt-like cloth-like member is folded in two along a folding line extending in the longitudinal direction and overlapped. The elastic member 32 may be formed by joining two belt-like portions on both sides of the folding line with a plurality of elastic yarns 323 interposed therebetween. Further, the two strip-shaped members 321 and 322 are not necessarily formed of a non-woven fabric as long as they are formed of a cloth-shaped member.

  As shown in FIGS. 2 and 3, the pair of side sheets 3 are each formed of a belt-like joint portion 33 that is a part of one side of the fold line 39 provided over the entire length in the longitudinal direction, and the fold line 39. The side wall part 34 which is a site | part of the other side is provided. The joining portion 33 is joined to the wearer side of the main body portion 2 over the entire length in the vicinity of the side edge of the main body portion 2 via a hot melt adhesive, and the side wall portion 34 is worn at a fold line 39. A part thereof (an upright part 342 (see FIG. 2) described later) stands up from the main body part 2 while being bent toward the person side.

  As shown in FIG. 3, the side wall portion 34 includes two fixing portions 341 that are overlapped on the joint portion 33 at both ends in the longitudinal direction and fixed on the joint portion 33 by heat sealing. In FIG. 1, in order to facilitate understanding of the drawing, parallel diagonal lines are given to the fixing portions 341 of the pair of side wall portions 34. The fixing portion 341 may be fixed to the bonding portion 33 by ultrasonic bonding, adhesion with a hot melt adhesive, or a combination of heat sealing and adhesion with a hot melt adhesive.

  As shown in FIG. 2, the side wall 34 is also separated from a fold line 39 located inside the side edge of the main body 2 (that is, on the main body 2 away from the side edge of the main body 2. And a flat portion 343 extending from the upper end of the standing portion 342 (ie, the end portion on the wearer side) outward in the width direction. In the present embodiment, the height of the upright portion 342 is extremely small, such as several millimeters, but the side wall portion 34 may be provided with a higher upright portion 342.

  The planar portion 343 includes two sheet portions (hereinafter, the upper and lower sheet portions in FIG. 2 are referred to as “first planar sheet portion 3431” and “second planar sheet portion 3432”, respectively). Thus, the first flat sheet portion 3431 and the second flat sheet portion 3432 are not joined over the entire length in the longitudinal direction. In the side wall portion 34, the elastic member 32 is flat at a position away from the outer edge 3433 (that is, the outer edge in the width direction) of the flat portion 343 between the first flat sheet portion 3431 and the second flat sheet portion 3432. It is disposed over the entire length of the portion 343. As shown in FIG. 1, the planar portion 343 and the standing portion 342 are continuous from the two fixing portions 341 between the two fixing portions 341.

  In each side seat 3, the elastic member 32 is disposed in an extended state between the two fixing portions 341, and the elastic member 32 is joined to the two fixing portions 341 at both end portions 324 in the longitudinal direction. The Further, the intermediate portion 325 between both end portions 324 of the elastic member 32 (that is, the portion between the first flat sheet portion 3431 and the second flat sheet portion 3432 of the flat portion 343) is the total length in the longitudinal direction of the flat portion 343. The flat portion 343 is not joined over the entire area. The length of the intermediate portion 325 of the elastic member 32 is preferably 65% or more and 90% or less of the entire length of the elastic member 32 in a state where the side wall portion 34 is extended in the longitudinal direction. In the absorbent article 1, when the elastic member 32 of each side sheet 3 contracts, the flat portion 343 contracts to form a gather.

  When the absorbent article 1 is attached to the wearer, the elastic member 32 provided on each side sheet 3 contracts, so that the upright part 342 of the side wall part 34 on the side of the main body 2 is on the wearer side. The flat portion 343 contracts and the gathers are formed. That is, the part between the fixing parts 341 of the side wall part 34 rises to form a three-dimensional gather, and the first flat sheet part 3431 (see FIG. 2), which is the wearer side face of the flat part 343, is the root of the wearer's foot. Opposes nearby skin. And the 1st plane sheet | seat part 3431 closely_contact | adheres to the skin of the base of a foot | base, deform | transforming along the shape of the site | part of the base of a foot | base.

  In this way, the side walls 34 of the pair of side sheets 3 are brought into close contact with the wearer's skin by the flat portion 343 having a large width, so that excrement such as urine moves outside the flat portion 343. Leakage from the absorbent article 1 is prevented. In the absorbent article 1, in each side sheet 3, a belt-like elastic member 32 is provided between the first flat sheet portion 3431 and the second flat sheet portion 3432 as an elastic member that contracts the flat portion 343. The shape stability of the flat surface portion 343 is improved as compared with the case where only a thread-like elastic member is provided between the first flat sheet portion 3431 and the second flat sheet portion 3432. Thereby, the rolling etc. of the plane part 343 are prevented, and the adhesiveness of the plane part 343 with respect to a wearer can be improved. As a result, leakage of excrement from the side wall portion 34 of the side seat 3 (so-called side leakage) is more reliably prevented.

  In the absorbent article 1, the flexibility (so-called cushioning property) of the flat surface portion 343 is enhanced by making the intermediate portion 325 of the elastic member 32 non-joined with the flat surface portion 343 in each side wall portion 34. As a result, the wearing feeling of the absorbent article 1 is improved. Further, the elastic member 32 is joined only to the fixing part 341 of the side wall part 34 and is not joined to the flat part 343 over the entire length in the longitudinal direction of the flat part 343, whereby the flexibility of the flat part 343 is further increased. The wear feeling of the absorbent article 1 is further improved.

  In the side wall portion 34, the elastic member 32 is disposed at a position away from the outer edge 3433 of the flat surface portion 343 in the width direction, so that a portion of the flat surface portion 343 in the vicinity of the outer edge 3433 that contacts the wearer relatively strongly. Flexibility is increased. Thereby, the wearing feeling of the absorbent article 1 is further improved. Further, as described above, the length of the flexible flat portion 343 is set such that the length of the intermediate portion 325 that is not joined to the flat portion 343 of the elastic member 32 is 65% or more of the entire length of the elastic member 32. Is sufficiently secured and the wearing feeling of the absorbent article 1 is improved, and further, the length of the intermediate portion 325 is 90% or less of the entire length of the elastic member 32, whereby both end portions 324 ( In other words, the length of the portions on both sides of the intermediate portion 325 of the elastic member 32 is sufficiently secured, and the elastic member 32 is more reliably joined to the fixing portion 341.

  In the side seat 3, the flat portion 343 of the side wall portion 34 spreads outward in the width direction from the upper end of the upright portion 342, so that the flat portion 343 has a shape that is easy to follow along the vicinity of the base of the wearer's foot. As a result, the adhesion of the flat surface portion 343 to the wearer can be further improved.

  In the absorbent article 1, a belt-like polyurethane film, a belt-like natural rubber, or the like may be used as the elastic member 32, but as described above, the two belt-like members 321 and 322 in which the elastic member 32 is overlaid. By having a structure in which a plurality of elastic members 32 are joined between the two, the strength of the elastic members 32 is increased as compared with the case where a strip-like polyurethane film or the like is used. Thereby, the shape stability of the plane part 343 is further improved, and the adhesion of the plane part 343 to the wearer can be further improved. Moreover, the manufacturing cost of the elastic member 32 can also be reduced.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  For example, both end portions 324 of the elastic member 32 may be joined to both the fixed portion 341 and the flat portion 343 across the boundary between the fixed portion 341 and the flat portion 343 of the side wall portion 34. Further, the elastic member 32 is not necessarily provided over the entire length of the flat surface portion 343, and the elastic member 32 that is slightly shorter than the length of the flat surface portion 343 in the extended state does not overlap the fixing portion 341. It may be provided over substantially the entire length in the longitudinal direction. In this case, both end portions 324 of the elastic member 32 are joined to portions near the fixed portion 341 of the flat surface portion 343. That is, in each side sheet 3, both end portions 324 in the longitudinal direction of the elastic member 32 are joined to at least one of the two fixing portions 341 and the flat portion 343.

5 and 6 are cross-sectional views showing an absorbent article according to a technique related to the present invention, and FIG. 7 is a cross-sectional view showing another example of the absorbent article according to the present invention. In the absorbent article 1 a shown in FIG. 5, the upright part 342 a of the side wall part 34 is directed to the wearer side and outward in the width direction from the position on the main body part 2 away from the side edge of the main body part 2. The flat portion 343 extends from the upper end of the standing portion 342a that stands up and is located approximately above the side edge of the main body portion 2 to the inside in the width direction.

  In the absorbent article 1 b shown in FIG. 6, the standing portion 342 b of the side wall portion 34 stands from the side edge of the main body portion 2 to the wearer side and is positioned approximately above the side edge of the main body portion 2. From the upper end of the part 342b, the plane part 343 extends inward in the width direction. Moreover, in the absorbent article 1c shown in FIG. 7, the standing part 342c of the side wall part 34 stands up from the position on the main body part 2 away from the side edge of the main body part 2 to the wearer side, 343 spreads outward and inward in the width direction from the upper end of the upright portion 342c.

  Also in the absorbent articles 1a to 1c shown in FIGS. 5 to 7, the first flat sheet portion 3431 and the second flat sheet are formed over the entire length in the longitudinal direction of the flat portion 343, similarly to the absorbent article 1 shown in FIG. A band-shaped elastic member 32 disposed in an expanded state is provided between the portions 3432, and both end portions 324 (see FIG. 1) of the elastic member 32 are joined to the two fixing portions 341 (see FIG. 1) of the side wall portion 34. At the same time, the intermediate portion 325 of the elastic member 32 is not joined to the flat portion 343. Thereby, the shape stability of the plane part 343 is improved, the adhesion of the plane part 343 to the wearer can be improved, and further, the flexibility of the plane part 343 is enhanced and the feeling of wear of the absorbent article is improved. Is done.

  In addition to light incontinence pads, the above-mentioned absorbent article has a structure that includes various absorbent articles such as disposable diapers and auxiliary absorbents used on the wearer's side, or sanitary napkins and panty liners. May be applied to.

It is a top view showing an absorptive article concerning one embodiment. It is sectional drawing of an absorbent article. It is sectional drawing of an absorbent article. It is sectional drawing of an elastic member. It is sectional drawing of the absorbent article which concerns on related technology . It is sectional drawing of the absorbent article which concerns on related technology . It is sectional drawing of another absorbent article.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1a-1c Absorbent article 2 Main-body part 3 Side sheet 21 Top sheet 22 Absorption core 23 Back sheet 32 Elastic member 33 Joining part 34 Side wall part 39 Bending line 321,322 Band-shaped member 323 Elastic thread 324 End part 325 Middle part 341 Fixed portion 342, 342a to 342c Standing portion 343 Plane portion 3431 First plane sheet portion 3432 Second plane sheet portion 3433 Outer edge

Claims (4)

An absorbent article that receives excrement from a wearer,
A substantially sheet-like main body in which an absorbent core is disposed between the back sheet and the top sheet;
A pair of side sheets provided over substantially the entire length in the longitudinal direction of the main body part on both sides of the main body part;
With
Each of the pair of side sheets is
It is a part of one side of a fold line provided over the entire length in the longitudinal direction, and a belt-like joint part joined to the main body part;
A side wall portion that is a portion on the other side of the fold line, and a part of which rises from the main body portion;
With
The side wall
Two fixed portions fixed on the joint at both ends in the longitudinal direction;
A standing part that is continuous from the two fixing parts and rises from the fold line between the two fixing parts;
A flat surface portion that is continuous from the two fixed portions between the two fixed portions, spreads in the width direction of the main body portion perpendicular to the longitudinal direction from the upper end of the upright portion, and is laminated with two sheet portions;
The planar portion is disposed in an extended state between the two sheet portions of the planar portion over substantially the entire length in the longitudinal direction, and both end portions in the longitudinal direction are at least the two fixing portions and the planar portion. A belt-like elastic member that is joined to one side and the intermediate part between the both end parts is not joined to the flat part, and contracts the flat part by contraction to form a gather,
Equipped with a,
The standing part stands from a position on the main body part away from a side edge of the main body part;
The planar portion extends outward from the upper end of the upright portion in the width direction;
The absorbent article , wherein the elastic member is disposed at a position away from an outer edge of the planar portion in the planar portion . The absorbent article according to claim 1,
The elastic member is joined to the two fixed portions at the both ends in the longitudinal direction and is not joined to the planar portion over the entire length of the planar portion in the longitudinal direction.
The absorbent article, wherein the two sheet portions of the flat portion are not joined over the entire length in the longitudinal direction. The absorbent article according to claim 1 or 2,
The elastic member is
Two strips formed by cloth-like members and overlapped and joined to each other;
A plurality of elastic yarns extending substantially parallel and spaced apart along the longitudinal direction between the two strips and joined to the two strips;
An absorbent article comprising: The absorbent article according to any one of claims 1 to 3 ,
In a state where the side wall portion is extended in the longitudinal direction, the length of the intermediate portion that is not joined to the flat portion of the elastic member is 65% or more and 90% or less of the total length of the elastic member. Absorbent article characterized by.

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