JP2002282303A - Disposal wearing goods - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide disposal wearing goods which can prevent excrement from leaking out of a second and a third contact rim parts. SOLUTION: A liquid-impermeable sheet 6 which is installed at a third contact rim part 14 has a fixed rim part 6a, a free rim part 6b, a fixed inner rim part 6c, and a fixed outer rim part 6d. The fixed rim part 6a extends horizontally from the third contact rim part 14. The free rim part 6b extends laterally at the side of a posterior trunk surrounding area 25. The fixed inner rim part 6c extends longitudinally near the back 12b of a first contact rim part 12. The fixed outer rim part 6d extends longitudinally at rim parts 8 of both sides 8 of the posterior trunk surrounding area 25. So, in this disposal wearing goods 1, the sheet 6 prevents excrement from leaking out of the third contact rim part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable wearing article for absorbing and retaining excrement.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 8-322876 discloses that a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, so that a front waist region and a rear waist region are arranged in a vertical direction. And a crotch region located between the torso regions, a leg circumference abutment edge substantially arcuate inward in the lateral direction on both sides of the crotch region, and a longitudinally extending substantially Disclosed is a disposable wearing article in which a liquid-impervious leak-proof cuff is attached in a longitudinally extended state near a leg-around abutment edge.

[0003] The leg peripheral abutment edge portion extends first outside the both side edges of the core from the crotch region to the front and rear waist region in the vertical direction.
An abutting edge, and a second abutting edge extending laterally outward from a front portion of the first abutting edge located on the side of the front waist region;
A third contact edge extending outward from the rear side of the first contact edge located on the side of the rear waist region.

The leak-preventing cuff has a fixed edge extending vertically in the first contacting edge, a free edge extending vertically with a propensity to rise above the topsheet, and located in the front and rear waist area. And fixed front and rear end portions which fall down inward in the lateral direction of the article. A stretchable elastic member extending in the longitudinal direction is attached to the free edge in an extended state. In this diaper, as it curves with the topsheet inward, the free edge of the leak-proof cuff contracts longitudinally, and the free edge rises above the topsheet. In this diaper, the free edge of the leak-proof cuff forms a barrier to excrement, and can prevent the excrement from leaking from the first contact edge.

[0005]

In the diaper disclosed in the same publication, the fixed front and rear ends of the leak-proof cuff lie down inward in the lateral direction of the article, so that the fixed front and rear ends serve as a barrier against excrement. Non-functioning, fluid excrement such as loose stool and watery stool easily passed over the fixed front and rear ends of the leak-proof cuff, and the fluid excreta flowing toward the second and third contact edges was Leakage may occur from these contact edges.

An object of the present invention is to provide a disposable wearing article which can prevent excretion from leaking from the second and third contact edges.

[0007]

The premise of the present invention for solving the above-mentioned problems is that a liquid-permeable top sheet located on the skin contact side and a liquid-impermeable back sheet located on the skin non-contact side are provided. And a liquid-absorbent core interposed between the sheets,
Around the leg, comprising a front waist region and a rear waist region in the vertical direction, and a crotch region located between the waist regions, and substantially arcing inward in the horizontal direction on both sides of the crotch region. A first contact edge portion extending in the vertical direction from the crotch region to the front and rear waist region, and a leg portion having a contact edge portion; A second abutting edge extending laterally outward from a front portion of the located first abutting edge;
A disposable wearing article formed from a rear portion of the first contact edge located on the side of the rear waist region and a third contact edge extending outward in the lateral direction.

A feature of the present invention on such a premise is that the substantially liquid-impervious leak-proof sheet extending on the skin contact side and extending in the lateral direction is provided on at least the second and third contact edges. A leakage prevention sheet attached to one side, the second and third abutment edges extending in the lateral direction, a fixed edge portion, and the side of the waist region parallel to the fixed edge portion extending in the lateral direction. A free edge extending in the longitudinal direction, a fixed inner end extending in the longitudinal direction on the side of the first abutting edge, and extending in the longitudinal direction a given distance laterally outward from the fixed inner end. And having a fixed outer end.

As an example of an embodiment of the present invention, the leak-proof sheet is gradually separated from a horizontal center line which bisects the article in the vertical direction from the fixed inner end to the fixed outer end. So that it extends.

As another example of the embodiment of the present invention,
A substantially liquid-impervious leak-proof cuff extending in the longitudinal direction and positioned on the skin-contacting side, the leak-proof cuff being attached to the vicinity of the leg-around contact edge in an extended state in the longitudinal direction; However, a fixed edge portion extending in the vertical direction near the leg peripheral contact edge portion,
A free edge extending in the vertical direction with an upright propensity above the topsheet, and falling down to one of the laterally inward and the laterally outward located in the front and rear waist region. A fixed front and rear end portion, and the leakproof sheet is located outside the leakproof cuff.

As another example of the embodiment of the present invention,
A fixed inner end of the leak-proof sheet is fixed to a free edge of the leak-proof cuff.

As another example of the embodiment of the present invention,
The leak-proof cuff and the leak-proof sheet are formed from a substantially non-stretchable band-shaped sheet, and the first elastic member extending in the longitudinal direction is provided on a free edge of the leak-proof cuff. A second elastic member extending in the horizontal direction and extending in the lateral direction is attached to a free edge of the leak-proof sheet in the laterally-extended state, and the leak-proof sheet is
At least one of the second and third abutting edges is attached in the laterally extended state.

As another example of the embodiment of the present invention,
The leak-proof cuff and the leak-proof sheet are formed of a band-shaped sheet having elasticity and elasticity, and the leak-proof sheet extends in at least one of the second and third contact edges in the lateral direction. Installed in state.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With reference to the accompanying drawings, the details of the disposable wearing article according to the present invention will be described below by taking an open-type disposable diaper as an example.

FIGS. 1 and 2 are a partially cutaway perspective view of the diaper 1A shown from the side of the topsheet 2 and a cross-sectional view taken along the line AA of FIG. 1. FIG. FIG. 2 is a cross-sectional perspective view of the diaper 1A of FIG. 1 shown in a connected worn state. In FIG. 1, the horizontal direction is indicated by an arrow X, and the vertical direction is indicated by an arrow Y. The inner surfaces of the top sheet 2 and the back sheet 3
The surface facing the core 4 is referred to, and the outer surfaces of the sheets 2 and 3 are surfaces not facing the core 4.

The diaper 1A includes a liquid-permeable top sheet 2 located on the skin contact side, a liquid-impermeable back sheet 3 located on the non-skin contact side, and an absorbent sheet interposed between the sheets 2 and 3. The liquid core 4 is a main component. The core 4 is joined to the inner surfaces of the top sheet 2 and the back sheet 3. Diaper 1
A has a substantially liquid-impervious leak-proof cuff 5 extending in the longitudinal direction on the outer surface of the topsheet 2 and an outer surface of the topsheet 2 located outside the leak-proof cuff 5 in addition to the constituent members. A substantially liquid-impervious leak-proof sheet 6 extending in the lateral direction.

The diaper 1A includes a front waist region 23 and a rear waist region 25 in the longitudinal direction, and a crotch region 24 located between the front and back waist regions 23, 25.
Edge portions 7 extending laterally, and front and rear waist regions 23, 2
5 and both side edges 8 extending in the longitudinal direction. Inseam area 24
Extend on both sides of the diaper 1A, and extend substantially inward in the lateral direction of the diaper 1A.

The leg peripheral abutment edge 9 is formed on both side edges 4 a of the core 4.
A first abutting edge portion 12 extending vertically from the crotch region 24 to the front and rear waist regions 23 and 25, and a front waist region 2
3, a second contact edge 13 extending laterally outward from a front portion 12 a of the first contact edge 12, and a first contact edge located on the side of the rear waist region 25. Rear part 12b of part 12
And a third abutting edge portion 14 extending outwardly in the lateral direction. Second and third contact edges 13, 14
Extends from the front and rear portions 12a and 12b of the first contact edge portion 12 so as to be gradually separated from the horizontal center line Z that bisects the diaper 1A in the vertical direction as going outward in the horizontal direction.

The leak-proof cuff 5 is formed of a substantially non-stretchable band-like sheet. The leak-proof cuff 5 is attached to the vicinity of the leg peripheral abutment edge 9 in a vertically extended state, and the crotch region 2
4 to the front and rear waist regions 23 and 25.

The leak-proof cuff 5 has a fixed edge 5a extending in the vertical direction in the vicinity of the leg-around abutting edge 9, a free edge 5b extending in the vertical direction with an upright propensity above the topsheet 2. The diaper 1A has fixed front and rear ends 5c which are located in the front and rear waist regions 23 and 25 and which fall down in the lateral direction of the diaper 1A. The leak-proof cuff 5
The fixed edge 5a is fixed to the leg periphery contact edge 9, and the fixed front and rear ends 5c are fixed to both end edges 7.

In the leak-preventing cuff 5, a side portion 5d extends laterally outward from the fixed edge portion 5a. Free edge 5 of leakproof cuff 5
A stretchable elastic member 15 extending in the vertical direction is attached to b in an extended state. The elastic member 15 has the free edge 5
b.

The leak-proof sheet 6 is formed of a substantially non-stretchable band-like sheet. The leak-proof sheet 6 is attached to the third contact edge 14 in a laterally extended state, and extends from the rear portion 12b of the first contact edge 12 to both side edges 8 of the rear waist region 25.
Extending towards.

The leak-proof sheet 6 has a fixed edge 6a extending laterally on the third contact edge 14 and a free edge extending laterally on the side of the rear waist region 25 in parallel with the fixed edge 6a. 6b, a fixed inner end 6b extending vertically in the vicinity of the rear portion 12b of the first contact edge 12, and a fixed outer end 6d extending vertically on both side edges 8 of the rear waist region 25. In the leak-proof sheet 6, the fixed edge 6a is fixed to the third contact edge 14, the fixed inner end 6c is fixed to the vicinity of the rear portion 12b of the first contact edge 12,
Further, the fixed outer end 6 d is formed on both side edges 8 of the rear waist region 25.
It is stuck to.

The leak-proof sheet 6 extends from the fixed inner end 6c to the fixed outer end 6d so as to be gradually separated from the horizontal center line Z. A stretchable elastic member 16 extending in the lateral direction is attached to the free edge portion 6b of the leakage prevention sheet 6 in an extended state. The elastic member 16 covers a part of the free edge 6b.

In the diaper 1A, when it is bent in the vertical direction with the topsheet 2 inside, the free edge 5b of the leak-proof cuff 5 contracts in the vertical direction with the contraction of the elastic member 15,
The free edge 5b rises above the topsheet 2.

A band-shaped elastic member 10 for the waist around the body extending in the lateral direction is attached to both end edges 7 in an extended state.
A plurality of leg elastic members 11 extending in the vertical direction are attached to the leg peripheral contact edge 9 in an extended state.

In the diaper 1A, a pair of tape fasteners 17 is attached to both side edges 8 of the rear waistline region 25, and a rectangular region serving as a fixing region of the tape fastener 17 on the outer surface of the back sheet 3 in the front waistline region 23. A target tape 18 is attached.

The tape fastener 17 is formed of a flexible plastic film, and has a base end portion fixed to both side edges 8 of the rear waist region 25 and a target tape 18.
And a free end that is removably fastened to the body. An adhesive (not shown) is applied to the free end of the tape fastener 17, and the free end is temporarily attached to the outer surface of the top sheet 2 via the adhesive. The target tape 18 is formed from a flexible plastic film.

At both end edges 7, the end 2a of the topsheet 2
The end 3a of the back sheet 3 extends outwardly in the vertical direction from both end edges 4a of the core 4, and the overlapping portions of the ends 2a, 3a are fixed. The fixed front and rear ends 5c of the leak prevention cuff 5 are fixed to the end 2a of the topsheet 2.
The waist elastic member 10 is interposed between the end 2a of the top sheet 2 and the end 3a of the back sheet 3, and
a, 3a.

In the side edges 8 and the leg periphery contact edges 9, the side portions 2b of the topsheet 2 slightly extend laterally outward from the side edges 4b of the core 4, and further extend laterally outward from the side portions 2b. The side portion 3b of the back sheet 3 and the side portion 5d of the leak-proof cuff 5 extend toward the direction. The side 2b and the side 3b are connected to the side 2b,
The overlapping portions of 3b are fixed. Side 3
b and the side portion 5d are fixed to the overlapping portions of the side portions 3b and 5d. Fixed edge 5 of leak-proof cuff 5
a is fixed to the side portion 2b of the topsheet 2. The leg-surrounding elastic member 11 is interposed between the side portion 3b of the back sheet 3 and the side portion 5d of the leak-proof cuff 5, and the side portions 3b, 5d.
It is fixed to. The fixed edge 6a, the fixed inner end 6b, and the fixed outer end 6c of the leakproof sheet 6 are fixed to the side 5d of the leakproof cuff 5.

To wear the diaper 1A, the rear waist area 2
5 are superimposed on both sides 8 of the front waist region 23, and the free end of the tape fastener 17 is fixed to the target tape 18 via an adhesive. As shown in FIG. 3, a waist opening 19 and a leg opening 20 are defined in the diaper 1A to which the front and rear waist regions 23 and 25 are connected.

In the diaper 1A, the free edge 5b of the upstanding leak-proof cuff 5 forms a barrier against excrement. Diaper 1
In A, the leakage of the excrement from the first contact edge portion 12 is prevented by the leak prevention cuff 5. In the diaper 1A, even if the fluid excrement such as loose stool or watery stool climbs over the fixed rear end portion 5c of the leak-proof cuff 5 and flows toward the third contact edge 14, the leak-proof sheet 6 does not move. The excrement is blocked by the free edge 6b. In the diaper 1 </ b> A, the leakage of the excrement from the third contact edge portion 14 is prevented by the leakage prevention sheet 6.

FIGS. 4 and 5 are a partially cutaway perspective view of a disposable diaper 1B showing another embodiment and a sectional view taken along the line BB of FIG. 4, and FIG. FIG. 5 is a cross-sectional perspective view of the diaper 1B of FIG. In FIG. 4, the horizontal direction is indicated by an arrow X, and the vertical direction is indicated by an arrow Y.
Indicated by The difference between the diaper 1B of FIG. 4 and that of FIG.
It is as follows.

In this diaper 1B, the leak-proof sheet 6 is
Attached to the contact edge portion 14 and further provided with a leakproof sheet 21
Are attached to the second contact edge 13. The leakproof sheet 21 is located outside the leakproof cuff 5 and extends laterally on the outer surface of the topsheet 2.

The leak-proof sheet 21 is formed of a substantially non-stretchable band-like sheet. The leak-proof sheet 21 is the second
It is attached to the contact edge 13 in a laterally extended state, and the first
The front edge 12a of the contact edge 12 extends toward both side edges 8 of the front waist region 23.

The leak-proof sheet 21 has a fixed edge 21a extending laterally on the second contact edge 13 and a free edge extending laterally on the side of the front waist region 23 in parallel with the fixed edge 21a. 21
b, a fixed inner end 21 c extending in the longitudinal direction near the front portion 12 a of the first contact edge 12, and both side edges 8 of the front waist region 23.
And a fixed outer end 21d extending in the vertical direction. The leak-proof sheet 21 has a fixed edge 21 a fixed to the second contact edge 13, and fixed outer ends 21 d formed on both side edges 8 of the front waist region 23.
It is stuck to.

The leakage prevention sheet 21 extends so as to be gradually separated from the horizontal center line Z from the fixed inner end 21c to the fixed outer end 21d. A stretchable elastic member 22 extending in the lateral direction is attached to the free edge 21b of the leakage prevention sheet 21 in an extended state. The elastic member 22 covers a part of the free edge 21b.

In the diaper 1B, the fixed inner ends 6c and 21c of the leak-proof sheets 6 and 21 are fixed to the free edge 5b of the leak-proof cuff 5. In the diaper 1 </ b> B, the free edges 5 b of the leak-proof cuff 5 rise above the topsheet 2, so that the free edges 6 b, 2 of the leak-proof sheets 6, 21.
Since 1b is lifted above the topsheet 2, the free edges 5b of the leak-proof cuff 5 and the free edges 6b, 21b of the leak-proof sheets 6, 21 form a barrier to excrement. In the diaper 1B, it is possible to prevent fluid excretions such as loose stools and watery stools from climbing over the free edges 6b and 21b of the leakproof sheets 6 and 21.

In the diaper 1B, even if the fluid excreta climbs over the fixed front and rear end portions 5c of the leak-proof cuff 5, and flows toward the second and third contact edge portions 13 and 14, the leak-proof sheet is not removed. The excrement is blocked by the free edges 6b, 21b of 6, 21. In the diaper 1B, the second and third
Leakage of excrement from the contact edge portions 13 and 14 is prevented by the leakage prevention sheets 6 and 21.

In the illustrated diapers 1A and 1B, when the diapers 1A and 1B are worn, the free edges 6
Since the elastic members 16 and 22 attached to the b and 21b extend outward in the lateral direction, and together with the elastic member 11 for leg circumference, the elastic members 16 and 22 tighten the circumference of the leg of the wearer.
The second and third contact edges 13, 14 can be brought into close contact with the wearer's leg.

In the illustrated diapers 1A and 1B, the leak-proof cuff 5 and the leak-proof sheets 6 and 21 may be formed of a band-like sheet having elastic elasticity. In this case, the attachment of the elastic members 15, 16, 22 to the free edges 5b, 6b, 21b can be omitted.

As the top sheet 2, a hydrophilic fiber non-woven fabric or a plastic film having a large number of fine holes can be used. As the back sheet 3, any one of a hydrophobic fiber nonwoven fabric, a liquid-impermeable plastic film, a two-layer nonwoven fabric in which a hydrophobic fiber nonwoven fabric is laminated, and a composite sheet in which a plastic film is fixed to a hydrophobic fiber nonwoven fabric is used. be able to. A hydrophobic fiber nonwoven fabric can be used for the leak-proof cuff 5 and the leak-proof sheets 6 and 21.

The back sheet 3, the leak-proof cuff 5, and the leak-proof sheets 6 and 21 are made of a melt-blown fiber nonwoven fabric having high water resistance, and a high-strength and flexible spunbond fiber nonwoven fabric. It is also possible to use a composite nonwoven fabric sandwiched between the two.

As the nonwoven fabric, those manufactured by spunlace, needle punch, melt blown, thermal bond, spunbond, chemical bond, and air through methods can be used. The constituent fibers of the nonwoven fabric include polyolefin-based, polyester-based, and polyamide-based fibers, polyethylene / polypropylene,
Alternatively, a core / sheath composite fiber or a parallel composite fiber composed of polyethylene / polyester can be used.

When the leak-proof cuff 5 and the leak-proof sheets 6 and 21 are formed from stretchable sheets, a stretchable hydrophobic fibrous nonwoven fabric can be used. As the stretchable fiber non-woven fabric, those manufactured by melt blown or spun bond processes can be used. As the constituent fibers of the stretchable fiber nonwoven fabric, stretchable fibers obtained by melting and spinning a thermoplastic elastomer resin can be used. Further, the leak-proof cuff and the leak-proof sheet are formed by melting and spinning a thermoplastic synthetic resin of polypropylene, polyethylene, or polyester on at least one surface of a stretchable and hydrophobic fiber nonwoven fabric made of thermoplastic elastomer resin fibers. A composite nonwoven fabric obtained by laminating a hydrophobic fiber nonwoven fabric made of crimped fibers can also be used.

The core 4 is a mixture of fluff pulp and superabsorbent polymer particles, or a mixture of fluff pulp, superabsorbent polymer particles and thermoplastic synthetic resin fibers, and is compressed to a required thickness. The core 4 is preferably entirely coated with tissue paper in order to prevent the polymer particles from falling off or out of shape. As the polymer particles, starch-based, cellulose-based, and synthetic polymer-based particles can be used.

The hot-melt type is used for fixing the front and back sheets 2 and 3, fixing the leak-proof cuff 5, fixing the leak-proof sheets 6 and 21, joining the core 4, and attaching the elastic members 10, 15, 16 and 22. An adhesive or a welding means by heat such as heat sealing or ultrasonic bonding can be used.

The present invention can be applied not only to an open type diaper but also to a pants type diaper in which front and rear waist regions are connected in advance.

[0049]

According to the disposable wearing article according to the present invention, the fluid excrement such as loose stool and watery stool is produced in the second and third places.
Even if it flows toward the contact edge, the excrement is blocked by the free edge of the leak-proof sheet. In this article, the leakage of the excrement from the second and third contact edges is prevented by the leakage prevention sheet.

In an article provided with a leak-proof cuff extending vertically in the vicinity of the leg-around contact edge, the free edge of the upstanding leak-proof cuff forms a barrier for excrement, and the first contact edge forms a barrier. The leakage of excrement is prevented by the leak-proof cuff. Excretion that has flowed over the fixed front and rear ends of the leak-proof cuff toward the second and third contact edges is blocked by the free edge of the leak-proof sheet.

In an article in which the fixed inner end of the leak-proof sheet is fixed to the free edge of the leak-proof cuff, the free edge of the leak-proof cuff rises above the topsheet, so that the sheet of the leak-proof sheet is raised. As the free edge is lifted above the topsheet,
The free edge forms a barrier for excrement, and the prevention of leakage of excrement from the second and third contact edges can be improved.

In these articles, the elastic member attached to the free edge of the leak-proof sheet tightens around the wearer's leg in combination with the elastic member for the leg circumference, so that the second and third abutments are provided. The edge can be brought into close contact with the wearer's leg.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a diaper shown from the side of a topsheet.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a partially broken perspective view of the diaper of FIG. 1 shown in a worn state in which front and rear waist regions are connected.

FIG. 4 is a partially cutaway perspective view of a disposable diaper showing another embodiment.

FIG. 5 is a sectional view taken along line BB of FIG. 5;

FIG. 6 is a partially broken perspective view of the diaper of FIG. 4 shown in a worn state in which the front and rear waist regions are connected.

[Explanation of symbols]

 Reference Signs List 1A disposable diaper (disposable wearing article) 1B disposable diaper (disposable wearing article) 2 liquid-permeable top sheet 3 liquid-impermeable back sheet 4 liquid-absorbent core 5 leak-proof cuff 5a fixed edge 5b free edge 5c fixed front and rear ends Part 6 Leak-proof sheet 6a Fixed edge 6b Free edge 6c Fixed inner end 6d Fixed outer end 9 Leg contact edge 12 First contact edge 12a Front 12b Rear 13 Second contact edge 14 Third contact edge 15 Elastic member (first elastic member) 16 Elastic member (second elastic member) 21 Leak-proof sheet 21a Fixed edge 21b Free edge 21c Fixed inner end 21d Fixed outer end 22 Elastic member ( (2nd elastic member) 23 front waist area 24 inseam area 25 rear waist area Z horizontal center line

Claims (6)

[Claims] 1. A liquid-permeable top sheet located on the skin contact side, a liquid-impermeable back sheet located on the non-skin contact side, and a liquid-absorbing core interposed between the sheets. A leg that includes a front waist region and a rear waist region in a vertical direction, and a crotch region located between the waist regions, and substantially forms an arc inward in a lateral direction on both sides of the crotch region. A first abutment edge extending in the longitudinal direction from the crotch region toward the front and rear waist region, and a side of the front waist region. A second contact edge extending laterally outward from a front portion of the first contact edge located at
A disposable wearing article formed from a rear portion of the first contact edge portion located on the side of the rear waist region and a third contact edge portion extending outward in the lateral direction from the rear portion of the first contact edge portion; A substantially liquid-impervious leak-proof sheet extending laterally and attached to at least one of the second and third abutting edges, wherein the leak-proof sheet is attached to the second and third abutting edges. A fixed edge extending in the lateral direction with a contact edge, a free edge extending laterally on the side of the waist region in parallel with the fixed edge, and a side of the first contact edge The article characterized in that it has a fixed inner end extending in the longitudinal direction and a fixed outer end extending in the longitudinal direction spaced a given distance laterally outward from the fixed inner end. 2. The leak-proof sheet extends from the fixed inner end to the fixed outer end so as to be gradually separated from a horizontal center line bisecting the article in the vertical direction. Goods. 3. A substantially liquid-impervious leak-proof cuff extending on the skin contact side and extending in the longitudinal direction, the cuff being attached to the leg-around abutment edge in the longitudinal direction. A fixed edge extending vertically in the vicinity of the abutment edge around the leg, a free edge extending vertically with the propensity to stand above the topsheet, A fixed front and rear end portion which is located in the waist area and falls down to one of the laterally inward and the laterally outward, and the leakproof sheet is located outside the leakproof cuff. The diaper according to claim 1 or claim 2, wherein 4. The diaper according to claim 3, wherein a fixed inner end of the leak-proof sheet is fixed to a free edge of the leak-proof cuff. 5. The leak-proof cuff and the leak-proof sheet are formed from a substantially non-stretchable band-like sheet, and the first elastic member extending in the longitudinal direction is free of the leak-proof cuff. An elastic second elastic member attached to an edge in the longitudinal direction and extended in the lateral direction, attached to a free edge of the leak-proof sheet in the laterally extended state, The diaper according to claim 3 or 4, wherein the diaper is attached to at least one of the second and third contact edges in the laterally extended state. 6. The leak-proof cuff and the leak-proof sheet are formed of a band-like sheet having elastic elasticity, and the leak-proof sheet is provided on at least one of the second and third contact edges. The diaper according to claim 3 or 4, wherein the diaper is attached in an extended state in the lateral direction.