JP2003079659A - Disposable wearing article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable wearing article capable of preventing excrement from leaking out in the vicinity of front and rear fixed edge portions of a leakage prevention sheet. SOLUTION: In the disposable wearing article 1 consisting of a sheet main body 2 and a liquid-absorbent member 3, the leakage prevention sheet 23 is attached in the vicinity of both edge portions and has a fixed edge portion, a free edge portion and a front and rear fixed edge portions falling flat inward in a lateral direction, and an elastic member is attached on the free edge portion of the sheet 23 in an extending state. A sheet piece 16 capable of pulling up the free edge portion of the sheet 23 to the upper part of the member 3 is provided with a fixed upper edge portion which is positioned outside the sheet 23, extends laterally along the front and rear waist periphery regions 8, 10, and is connected to the free edge portion being positioned in the vicinity of the front and rear fixed edge portions of the sheet 23, a fixed lower edge portion which is connected to the waist periphery region and a free intermediate portion which extends between the upper fixed edge portion and the lower fixed edge portion.

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 that absorbs and retains excrement.

[0002]

2. Description of the Related Art A liquid-permeable surface sheet having a front and rear waist regions and a crotch region positioned between the waist regions and a skin-contacting side, and a liquid-impermeable surface not contacting the skin. The back sheet and the liquid-absorbent core that extends between the crotch region and the front and rear waist regions and is interposed between the back sheet and the substantially liquid-impervious leak-proof sheet that extends in the longitudinal direction of the core. Disposable wearing articles mounted near the outer sides of both side edges are known.

The leak-proof sheet is fixed near the outer sides of both side edges of the core and extends in the vertical direction, a free edge extending upward in the vertical direction and upward in the core, and a horizontal inward direction. And fixed front and rear end portions fixed to the front and rear waist regions of the wearing article in a state of being laid on its side. On the free edge of the leakproof sheet,
A stretchable elastic member extending in the longitudinal direction is attached in an extended state.

As such a worn article, there is disclosed in Japanese Unexamined Patent Publication No. 8-
It is disclosed in Japanese Patent No. 322876 and Japanese Patent Laid-Open No. 8-322877. In the wearing articles disclosed in those publications, the free edge portion of the leak preventive sheet standing above the core forms a barrier against excrement, and side leakage of excrement from the crotch region can be prevented.

[0005]

In the wearing articles disclosed in those publications, when the free edge of the leakproof sheet is insufficiently erected, the free edge does not function as a barrier against excrement,
Excrements may get over free edges. In these worn articles, the fixed front and rear end portions of the leak-proof sheet are fixed in a state of falling inward in the lateral direction of the article, so the free edges located near the fixed front and rear end portions do not stand up sufficiently and are fixed. Lateral leakage of excrement easily occurs near the front and rear ends. In these wearing articles, there is no means for raising the free edge portion located in the vicinity of the fixed front and rear end portions of the leak-proof sheet above the core, and the free edge portion located there cannot be surely erected.

An object of the present invention is to reliably raise the free edge portions located near the fixed front and rear end portions of the leak preventive sheet,
An object of the present invention is to provide a disposable wearing article capable of preventing lateral leakage of excrement in the vicinity of fixed front and rear ends.

[0007]

The first premise of the present invention for solving the above problems is to provide a seat member having front and rear waist regions and a crotch region located between the waist regions, and the crotch region. From a liquid-absorbent member extending in the vertical direction toward the front and rear waist regions, and a substantially liquid-impervious leak-proof sheet is provided in the vertical direction in the vicinity of both side edges of the liquid-absorbent member. The leak preventive sheet extends, the fixed edge portion extending in the vertical direction, the free edge portion extending in the vertical direction with an erecting tendency upward of the liquid absorbing member, and the fixed inclining inward in the horizontal direction. The stretchable elastic member having front and rear ends and extending in the longitudinal direction is attached to the free edge portion of the leakproof sheet in a stretched state.

The first feature of the present invention on the first premise is that the sheet piece capable of raising the free edge of the leakproof sheet above the liquid-absorbent member is the leakproof sheet. At least one of the vicinity of the fixed front end portion and the vicinity of the fixed rear end portion of the leakproof sheet, which is located outside, extends in the lateral direction, and the sheet piece is located near the fixed front and rear end portions of the leakproof sheet. A fixed upper end connected to a free edge portion, a fixed lower end connected to any of the waist region and the crotch region, and a free middle extending between the fixed upper end and the fixed lower end. To have a department.

A second premise of the present invention for solving the above problems is a seat member having front and rear waist regions and a crotch region located between the waist regions, and the crotch region to the front and rear waist regions. And a liquid-absorbent member extending in the vertical direction toward the liquid-absorbent member, and a substantially liquid-impervious leak-proof sheet extending in the vertical direction near both side edges of the liquid-absorbent member, and the leak-proof sheet. Is provided with a fixed edge portion extending in the vertical direction, a free edge portion extending upward in the vertical direction with an erecting tendency upward of the liquid absorbing member, and fixed front and rear end portions lying outward in the horizontal direction. ,
The stretchable elastic member extending in the longitudinal direction is a disposable wearing article attached to the free edge portion of the leakproof sheet in an extended state.

The second feature of the present invention in the second premise is that the sheet piece capable of raising the free edge portion of the leakproof sheet above the liquid-absorbent member is the leakproof sheet. At least one of the vicinity of the fixed front end portion and the vicinity of the fixed rear end portion of the leakproof sheet extending in the lateral direction is located inside, and the sheet piece is located near the fixed front and rear end portions of the leakproof sheet. A fixed upper end connected to a free edge portion, a fixed lower end connected to any of the waist region and the crotch region, and a free middle extending between the fixed upper end and the fixed lower end. To have a department.

As an example of the embodiment of the present invention, the liquid-absorbent member is a liquid-permeable surface sheet located on the skin contact side and a substantially liquid-impermeable surface sheet located on the skin non-contact side. And a liquid-absorbent core interposed between the sheets.

As another example of the embodiment of the present invention,
The sheet member is formed of a liquid-permeable topsheet located on the skin contact side and a substantially liquid-impermeable backsheet located on the skin non-contact side, and the liquid-absorbent member is It is interposed between the top sheet and the back sheet.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The details of the disposable wearing article according to the present invention will be described below with reference to the accompanying drawings by taking a pants-type disposable diaper and an open-type disposable diaper as examples.

1 and 2 are partially cutaway perspective views of a pants-type diaper 1 and FIG. 1 showing a state before being molded into a pants-type.
FIG. 3 is a perspective view of the diaper 1 and FIGS.
It is an A line end view, and the BB sectional view taken on the line of FIG. 1 and 2, the horizontal direction is indicated by arrow X, and the vertical direction is indicated by arrow Y. The inner surfaces of the top sheet 19 and the back sheet 20 are surfaces facing the liquid-absorbent core 21, and the outer surfaces of the sheets 19 and 20 are surfaces not facing the core 21.

The diaper 1 is composed of a sheet member 2 that defines pants and a liquid-absorbent member 3 attached to the inner surface of the sheet member 2. The diaper 1 has a waist opening 4 and a pair of leg openings 5 below the waist opening 4.

The sheet member 2 is formed of a substantially liquid-impermeable outer sheet 6 and an inner sheet 7 which are superposed on each other. The outer surface sheet 6 and the inner surface sheet 7 are fixed to each other at their facing surfaces. The seat member 2 has a front waist region 8 and a rear waist region 10 facing each other, and a crotch region 9 located between the waist regions 8 and 10.

As shown in FIG. 2, the seat member 2 has an hourglass shape in plan view, and has a waist circumference end portion 11 extending laterally in the front and rear waist circumference areas 8 and 10, and front and rear waist circumference areas 8 and 10.
Has a waist-side portion 12 extending in the vertical direction and a leg-side portion 13 extending in the crotch region 9 in the vertical direction. In the seat member 2, the leg side portions 13 form an arc toward the inside of the diaper 1 in the lateral direction. At the waist end 11 of the seat member 2,
A plurality of waist elastic members 14 extending in the lateral direction are attached in an extended state. Leg-side part 1 of the seat member 2
3 includes a plurality of leg elastic members 15 extending in the longitudinal direction.
Is attached in an extended state. Elastic member for waist 1
4 and the leg elastic member 15 are interposed between the outer sheet 6 and the inner sheet 7 and fixed to the facing surfaces of the sheets 6 and 7. On the waist side portion 12 of the seat member 2,
A strip-shaped sheet piece 16 capable of causing a free edge portion 23b of the leak-proof sheet 23 to be described above to be located above the liquid-absorbent member 3.
Is attached. In the sheet member 2, the vicinity of the side edge 17 of the waist side portion 12 overlaps in a palm shape, and the vicinity of the side edge 17 is fixed via a large number of heat-sealing portions 18 arranged intermittently in the vertical direction.

The liquid-absorbent member 3 includes a liquid-permeable topsheet 19 located on the skin contact side, a substantially liquid-impermeable backsheet 20 located on the skin non-contact side, and the sheets 19. , 20
And a liquid-absorbent core 21 interposed between the two.
The core 21 is fixed to the inner surface of at least one of the topsheet 19 and the backsheet 20. The liquid-absorbent member 3 has a substantially rectangular planar shape, and extends in the vertical direction from the crotch region 9 of the seat member 2 toward the front and rear waist regions 8, 10. In FIG. 1, the liquid-absorbent member 3 forms a substantially U-shape along the curve of the crotch region 9 of the sheet member 2.

The liquid-absorbent member 3 extends in the longitudinal direction from the crotch region 9 of the sheet member 2 toward the waist-surrounding end portion 11 and both edge portions 3a extending laterally in the vicinity of the waist-surrounding end portion 11 of the sheet member 2. It has both side edge portions 3b extending. The liquid-absorbent member 3 has both end edge portions 3 a located inside the waist peripheral end portion 11 of the seat member 2, and both side edge portions 3 b of the seat member 2 around the waist portion 12 and around the leg portion 13. It is located inside. The liquid-absorbent member 2 is fixed to the vicinity of the waist end 11 of the sheet member 2 and the crotch region 9 with a hot melt adhesive 22. A substantially liquid-impervious leakproof sheet 23 extending in the vertical direction is attached to both side edges 3b of the liquid-absorbent member 3.

The leak-proof sheet 23 is provided on both side edges 21 of the core 21.
a fixed edge portion 23 that is fixed near the outside of b and extends in the vertical direction
a, a free edge portion 23b extending upward in the vertical direction having an upright tendency above the liquid-absorbent member 3, and a front and rear waist region of the liquid-absorbent member 3 in a state of lying inward in the lateral direction of the diaper 1. It has fixed front and rear end portions 23c fixed to both end edge portions 3a located at 8 and 10. A stretchable elastic member 24 extending in the vertical direction is attached to the free edge portion 23b in a stretched state. The elastic member 24 covers a part of the free edge portion 23b.

The sheet piece 16 is located outside the leak preventive sheet 23 and extends laterally around the waist circumference side portions 12 in the front and rear waist circumference regions 8 and 10 of the sheet member 3. Sheet piece 16
Is a fixed upper end portion 16a fixed to a free edge portion 23b located in the vicinity of the fixed front and rear end portions 23c of the leak-proof sheet 23, and a fixed lower end portion 1 fixed to the waist side portion 12 of the sheet member 2.
6b and a free intermediate portion 16c extending between the fixed upper end portion 16a and the fixed lower end portion 16b. Fixed lower end 16b
Are fixed to the inner sheet 7. Free middle part 16c
Are separated from the inner sheet 7 and the leakproof sheet 23. A plurality of stretchable elastic members 25 extending in the lateral direction are attached to the sheet piece 16 in an extended state.

At both edges 3a of the liquid-absorbent member 3, the core 2 is
A top sheet 1 extending vertically outward from both end edges 21a of the sheet 1.
9 and the back sheet 20 have their end portions 19a, 20a overlapped with each other, and at the end portions 19a, 20a, the sheets 19, 2
The inner surfaces of No. 0 are fixed. The fixed front and rear end portions 23c of the leakproof sheet 23 are fixed to the outer surface of the end portion 19a of the topsheet 19.

At both side edges 3b of the liquid-absorbent member 3, the core 2 is provided.
A top sheet 1 extending laterally outward from both side edges 21b of the sheet 1.
9 and the back sheet 20, the side portions 19b, 20b overlap each other, and the sheets 19, 2 are formed on the side portions 19b, 20b.
The inner surfaces of No. 0 are fixed. The fixed edge portion 23a of the leakproof sheet 23 is fixed to the outer surface of the side portion 19b of the topsheet 19.

To form a pant mold from the state shown in FIG.
The sheet member 2 and the liquid-absorbent member 3 are bent along the horizontal center line L so that the outer surfaces of the topsheet 19 face each other, and the vicinity of the side edge 17 of the waist-side portion 12 of the sheet member 2 is fixed. The front and rear waist regions 8, 10 are connected.

In the diaper 1, when the diaper 1 is curved in the vertical direction with the surface sheet 19 inside, the elastic member 24 contracts in the vertical direction, and the free edge portion 23b of the leak-proof sheet 23 is moved above the liquid-absorbent member 3. Stand up. In the diaper 1, the free edge portion 23b of the standing leak preventive sheet 23 forms a barrier against excrement, and side leakage of excrement from the crotch region 9 can be prevented.

In the diaper 1, since the free edge portion 23b located in the vicinity of the fixed front and rear end portions 23c of the leak-proof sheet 23 is raised above the liquid absorbent member 3 by the sheet piece 16, the free edge portion located there is located. The portion 23b can be reliably erected, and side leakage of excrement in the vicinity of the fixed front and rear end portions 23c can be prevented. In the diaper 1, the free edge portion 23 located near the fixed front and rear end portions 23c of the leak-proof sheet 23.
Even if b tries to lie down inward in the lateral direction of the diaper 1, the free edge portion 23b located there is pulled by the sheet piece 16 outward in the lateral direction of the diaper 1, so that the free edge portion 23b moves inward in the lateral direction. You don't lie down.

5 and 6 are a partially cutaway perspective view of the open type diaper 30 and an end view taken along the line CC of FIG.
FIG. 6 is a sectional view taken along the line DD of FIG. In FIG. 5, the horizontal direction is indicated by arrow X, and the vertical direction is indicated by arrow Y.

The diaper 30 includes a liquid-permeable topsheet 31 (sheet member) located on the skin contact side and a substantially liquid-impermeable backsheet 32 (sheet member) located on the skin non-contact side.
And a liquid-absorbent core 33 (liquid-absorbent member) interposed between the sheets 31 and 32. Core 33
Is joined to the inner surface of at least one of the topsheet 31 and the backsheet 32.

The diaper 30 has a front waist region 34 and a back waist region 36 in the longitudinal direction, and a crotch region 35 located between the waist regions 34, 36. The diaper 30 has an end flap 37 that extends laterally outside the both end edges 33 a of the core 33, and a side flap 38 that extends longitudinally outside the both side edges 33 b of the core 33. In the diaper 30, the side flaps 38 have diapers 3 in the crotch region 35.
An arc is drawn inwardly in the lateral direction of 0, and its planar shape is an hourglass shape.

To the end flap 37, a plurality of lateral elastic members 39 for the waist are attached in a stretched state. A plurality of leg elastic members 40 extending in the longitudinal direction are attached to the side flaps 38 of the crotch region 35 in a stretched state. A substantially liquid-impervious leakproof sheet 41 extending in the longitudinal direction is attached to the side flap 38. A band-shaped sheet piece 42 capable of raising a free edge portion 41b of a leak-proof sheet 41 described later above the core 33 is attached to the front and rear waist regions 34, 36.

The leak-proof sheet 41 is fixed to the side flaps 38 and has a fixed edge portion 41a which extends vertically near the outer sides of both side edges 33b of the core 33, and a vertical direction with an uprighting tendency above the core 33. Free edge 41b extending and diaper 30
Front and rear waist regions 34, 36 in the state of lying laterally outward
And fixed front and rear end portions 41c. In the leakproof sheet 41, a side portion 41d extends laterally outward of the diaper 30 from the fixed edge portion 41a. A stretchable elastic member 43 extending in the vertical direction is attached to the free edge portion 41b in a stretched state. The elastic member 43 covers a part of the free edge portion 41b.

The sheet piece 42 is located inside the leakproof sheet 41 and extends laterally in the front and rear waist regions 34, 36 of the diaper 30. The sheet piece 42 includes a fixed upper end portion 42a fixed to a free edge portion 41b located near the fixed front and rear end portions 41c of the leak-proof sheet 41, and a front and rear waist region 3 of the diaper 30.
Fixed lower end 42b fixed to 4, 36 and free intermediate portion 4 extending between fixed upper end 42a and fixed lower end 42b.
2c and. The fixed lower end portion 42b is the top sheet 31.
Fixed to the outer surface of the. The free middle portion 42c is free from the topsheet 31 and the leakproof sheet 42.

In the end flap 37, the surface sheet 31
End portion 31a of the back sheet 32 and the end portion 32a of the back sheet 32 overlap each other, and the inner surfaces of the end portions 31a and 32a are fixed to each other. The fixed front and rear end portions 41c of the leakproof sheet 41 are fixed to the side portions 41d. The waist elastic member 39 is
Edge 31a of topsheet 31 and edge 3 of backsheet 32
2a and is fixed to the inner surfaces of the end portions 31a and 32a.

In the side flaps 38, the topsheet 31
Side portions 31b of the core 33 extend slightly outward in the lateral direction from both side edges 33b of the core 33, and further laterally outward from the side portions 31b of the topsheet 31. 41d is extended. The side portion 31b of the topsheet 31 is interposed between the side portion 32b of the backsheet 32 and the fixed edge portion 41a of the leak-proof sheet 41, and is fixed to them. In the side flap 38, the back sheet 31
Side portion 31b and the side portion 41d of the leak preventive sheet 41 overlap with each other, and the sheet 31,
The inner surfaces of 41 are fixed to each other. The leg elastic member 40 includes the side portion 32b of the back sheet 32 and the leak-proof sheet 41.
Between the side portions 41b of each of the side portions 32b and 41d.
It is fixed to the inner surface of d.

A pair of tape fasteners 44 extending laterally inward are attached to the side flaps 38 in the rear waist region 36. A rectangular target tape 45 serving as a fastening area for the tape fastener 44 is attached to the outer surface of the back sheet 32 in the front waistline area 34. An adhesive (not shown) is applied to the free end of the tape fastener 44, and the free end is temporarily attached to the rear waistline region 36 via the adhesive.

To wear the diaper 30, the rear waist region 3
The side flap 38 of No. 6 is superposed on the outside of the side flap 38 of the front waist region 34, and the free end portion of the tape fastener 44 is fixed to the target tape 45 with an adhesive to fix the front and rear waist regions 34, 36. Link. A waist opening and leg openings (not shown) are formed in the diaper 30 in which the front and rear waist regions 34, 36 are connected.

In the diaper 30, when the diaper 30 is curved in the vertical direction with the surface sheet 31 inside, the elastic member 43 contracts in the vertical direction, and the free edge portion 41b of the leak-proof sheet 41 becomes the core 33.
Stand up above. In the diaper 30, the free edge portion 41 b of the standing leak-proof sheet 41 forms a barrier against excrement, and side leakage of excrement from the crotch region 35 can be prevented.

In the diaper 30, since the free edge portion 41b located near the fixed front and rear end portions 41c of the leak-proof sheet 41 is raised above the core 33 by the sheet piece 42, the free edge portion 41b located there is fixed. It is possible to surely stand up, and it is possible to prevent lateral leakage of excrement in the vicinity of the fixed front and rear end portions 41c. In the diaper 30, even if the free edge portion 41b located near the fixed front and rear end portions 41c of the leak-proof sheet 41 tries to fall outward in the lateral direction of the diaper 30, the free edge portion 41b located there is diapered by the sheet piece 42. Since it is pulled inward in the lateral direction of 30, the free edge portion 41b does not fall down outward in the lateral direction.

In the diapers 1 and 30 shown in the drawings, the sheet pieces 16 and 42 include the front waist region 8, 34 and the rear waist region 10,
36, but the seat pieces 16, 42 may be arranged in at least one of the front and rear waist regions 8, 10, 34, 36. In addition, in order to prevent leakage of stool, it is preferable that the sheet pieces 16 and 42 are arranged in the rear waist region 10, 36.

For the surface sheets 19 and 31, any of hydrophilic fibrous nonwoven fabric, hydrophobic fibrous nonwoven fabric having a large number of openings, and plastic film having a large number of fine openings can be used. The outer sheet 6, the inner sheet 7, the back sheets 20 and 32, the leak-proof sheets 23 and 41, and the sheet piece 16 are made of a composite of a hydrophobic fibrous nonwoven fabric, a breathable liquid-impermeable plastic film, and a hydrophobic fibrous nonwoven fabric. Any of a non-woven fabric, a hydrophobic fibrous non-woven fabric, and a composite sheet in which a breathable liquid-impermeable plastic film is laminated can be used. A hydrophilic fibrous nonwoven fabric can be used for the sheet piece 42.

The outer sheet 6, the inner sheet 7, the back sheets 20, 32, and the leak-proof sheets 23, 41 are made of a fiber nonwoven fabric having a high water resistance by the melt blown method and have a high strength and a flexible span. It is also possible to use a composite non-woven fabric sandwiched between fibrous non-woven fabrics by the bonding method.

As the non-woven fabric, a non-woven fabric manufactured by a spun lace, needle punch, melt blown, thermal bond, spun pond, chemical bond or air through process can be used. As the constituent fibers of the non-woven fabric, polyolefin-based fibers, polyester-based fibers, polyamide-based fibers, core / sheath composite fibers or side-by-side composite fibers made of polyethylene / polypropylene or polyester can be used.

The cores 21 and 33 are a mixture of fluff pulp and superabsorbent polymer particles or a mixture of fluff pulp, superabsorbent polymer particles and thermoplastic synthetic resin fibers, which are compressed to a required thickness. There is. It is preferable that the cores 21 and 33 are entirely covered with a tissue paper in order to prevent the cores from losing their shape and the polymer particles from falling off. As the polymer particles, starch-based, cellulose-based, and synthetic polymer-based particles can be used.

Sheets 6, 7, 19, 20, 23, 31,
32 fixing, cores 21 and 33 fixing, elastic members 14 and 1
5, 24, 25, 39, 40, 43 fixed, sheet piece 1
For fixing 6, 42, hot-melt adhesive or
A heat welding means such as heat sealing or sonic sealing can be used.

[0045]

According to the disposable wearing article of the present invention, the free edge portion of the standing leak preventive sheet forms a barrier against excrement, and the sheet piece is positioned in the vicinity of the fixed front and rear end portions of the leak prevent sheet. Since the free edge is raised above the liquid-absorbent member, the free edge located there can be reliably erected, and side leakage of excrement in the vicinity of the fixed front and rear ends of the leak preventive sheet can be prevented. it can.

In the wearing article in which the fixed front and rear end portions of the leak-proof sheet are laid inward in the lateral direction and the sheet pieces are located outside the leak-proof sheet and extend laterally in the vicinity of the fixed front-rear end portions, Even if the free edge located near the fixed front and rear ends of the sheet tries to fall inward in the lateral direction of the article, the free edge located there is pulled outward by the sheet piece in the lateral direction of the article. The free edge does not collapse laterally inward.

In the wearing article in which the fixed front and rear end portions of the leak-proof sheet are laid laterally outward and the sheet pieces are located inside the leak-proof sheet and extend laterally in the vicinity of the fixed front-rear end portions, Even if the free edge located near the fixed front and rear ends of the sheet tries to fall outward in the lateral direction of the article, the free edge located there is pulled by the sheet piece inward in the lateral direction of the article. The free edge will not fall laterally outwards.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a pants-type diaper.

FIG. 2 is a perspective view of the diaper of FIG. 1 shown in a state before being molded into a pants type.

FIG. 3 is an end view taken along line AA of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

FIG. 5 is a partially cutaway perspective view of an open type diaper.

6 is an end view taken along line CC of FIG.

7 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

1 Pants-type disposable diaper (disposable worn article) 2 Sheet member 3 Liquid-absorbent member 8 Front waist region 9 Crotch region 10 Rear waist region 16 Sheet piece 16a Fixed upper end portion 16b Fixed lower end portion 16c Free middle portion 19 Liquid permeation Liquid-permeable top sheet 20 Liquid-impervious back sheet 21 Liquid-absorbent core 23 Leak-proof sheet 23a Fixed edge portion 23b Free edge portion 23c Fixed front and rear end portions 24 Elastic elastic member 30 Open-type disposable diaper (disposable wear article) 31 Liquid-permeable top sheet (sheet member) 32 Liquid-impermeable back sheet (sheet member) 33 Liquid-absorbent core (liquid-absorbent member) 34 Front waist region 35 Inseam region 36 Rear waist region 41 Leak prevention Seat 41a Fixed edge portion 41b Free edge portion 41c Fixed front and rear end portions 42 Sheet piece 42a Fixed upper end portion 42b Fixed lower end portion 42c Free intermediate portion 43 Stretchable elastic member

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3B028 EC16 KA01                 3B029 BD14                 4C098 AA09 CC03 CC10 CC12 CC16                       CC28 CE05 CE06 DD02 DD03                       DD06 DD10 DD12 DD23 DD24                       DD25 DD26 DD28 DD30

Claims (4)

[Claims] 1. A sheet member having front and rear waist regions and a crotch region located between the waist regions, and a liquid-absorbent member extending in the longitudinal direction from the crotch region to the front and rear waist regions. And a substantially liquid-impervious leakproof sheet,
The leak preventive sheet extends in the vertical direction in the vicinity of both side edge portions of the liquid absorbent member, and the leak preventive sheet has a fixed edge portion extending in the vertical direction and an upright tendency above the liquid absorbent member. Disposable wear in which the stretchable elastic member extending in the longitudinal direction is attached to the free edge portion of the leak-proof sheet in an extended state, the stretchable elastic member having a free edge portion extending inward and a fixed front-rear end portion lying inward in the horizontal direction. In the article, a sheet piece capable of pulling up a free edge portion of the leak-proof sheet above the liquid-absorbent member is located outside the leak-proof sheet and near a fixed front end portion of the leak-proof sheet. At least one of the vicinity of the fixed rear end portion extends in the lateral direction, and the sheet piece has a fixed upper end portion connected to a free edge portion located near the fixed front and rear end portions of the leakproof sheet, and the body. Fixed lower end connected to either the surrounding area or the crotch area And a free intermediate portion extending between the fixed upper end portion and the fixed lower end portion. 2. A sheet member having front and rear waist regions and a crotch region located between the waist regions, and a liquid-absorbent member extending in the longitudinal direction from the crotch region to the front and rear waist regions. And a substantially liquid-impervious leakproof sheet,
The leak preventive sheet extends in the vertical direction in the vicinity of both side edge portions of the liquid absorbent member, and the leak preventive sheet has a fixed edge portion extending in the vertical direction and an upright tendency above the liquid absorbent member. Disposable wear in which the stretchable elastic member extending in the longitudinal direction is attached to the free edge portion of the leak-proof sheet in an extended state. In the article, a sheet piece capable of pulling up a free edge portion of the leakproof sheet above the liquid-absorbent member is located inside the leakproof sheet and is near a fixed front end portion of the leakproof sheet. At least one of the vicinity of the fixed rear end portion extends in the lateral direction, and the sheet piece has a fixed upper end portion connected to a free edge portion located near the fixed front and rear end portions of the leakproof sheet, and the body. Fixed lower end connected to either the surrounding area or the crotch area And a free intermediate portion extending between the fixed upper end portion and the fixed lower end portion. 3. The liquid-absorbent member comprises a liquid-permeable top sheet located on the skin contact side, a substantially liquid-impermeable back sheet located on the skin non-contact side, and The wearing article according to claim 1 or 2, which is formed of a liquid-absorbent core interposed therebetween. 4. The sheet member is formed of a liquid-permeable top sheet located on the skin contact side and a substantially liquid-impermeable back sheet located on the skin non-contact side. The wearing article according to claim 1 or 2, wherein a liquid member is interposed between the top sheet and the back sheet.