JP2000107224A - Throw-away wearing article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a pocket capable of preventing the outflow of the excrement flowing therein by relatively simple means. SOLUTION: This throw-away wearing article 1 is composed of a top sheet 2 and a back sheet 3 and cores 4 interposed between both sheets 2 and 3 and has front and rear girth areas 20 and 22 and a groin area 21 and side flaps 5 which have a longitudinal direction and a transverse direction, extend outward in the transverse direction from both side edges 4a of the cores 4 and are mounted with elastic members. The side flaps 5 are bent to the inner side of the article 1 and are delineated to first portions 5a and second portions 5b existing above the first portions. The first portions 5a and the second portions are parted to face each other in the longitudinal direction and are joined to each other in a pair of sealing parts 6a inclining in such a manner that the opposite spacings expand gradually from the inner side toward the outer side of the article 1. First and second elastic members 7 and 8 extending in the longitudinal direction are mounted in an elongated state as elastic members to the first portions and the second portions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a worn article such as a disposable diaper, incontinence pants, training pants and the like.

[0002]

2. Description of the Related Art A disposable diaper cover disclosed in Japanese Patent Application Laid-Open No. 58-54005 has a pair of cuts formed on both sides of a cover body so as to be spaced apart from each other in a front-rear direction of a crotch region and to extend inward in a width direction. The two side edges are folded back inside the cover main body, and the vicinity of both end edges of the folded portion is joined to the inner surface of the cover main body. A pocket for inserting and removing the side edge of the diaper is formed in the crotch region on the inner surface of the cover body.

[0003] In the disposable diaper disclosed in Japanese Patent Application Laid-Open No. 62-250201, the width of each of the side edges of a liquid-absorbent core interposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet extends outward in the width direction. An elastic member is attached to the protruding side flap. Inside the elastic member, the second flap branched from the upper surface of the side flap falls down toward the inside of the diaper, and both ends in the longitudinal direction of the second flap are joined to the inner surface of the diaper. The free edge of the second flap has a second
Is attached, and the second flap can be raised from its branch edge by the second elastic member. The side flaps can be pressed against the thigh of the wearer, and the second flap can have its free edge at the center contact the base of the thigh of the wearer.

[0004]

Problems to be Solved by the Invention JP-A-58-5400
In the pocket of the disposable diaper disclosed in Japanese Patent Publication No. 5, the size between both edges gradually decreases from the opening of the pocket to the back, and it is difficult to prevent the excrement flowing into the pocket from flowing out.

In the disposable diaper disclosed in Japanese Patent Application Laid-Open No. 62-250201, it is necessary to prepare a separate member as the second flap and join it to the upper surface of the side flap of the diaper body.

An object of the present invention is to form a pocket for a disposable wearing article, which can prevent the inflow of excrement from flowing out, by relatively simple means.

[0007]

In order to solve the above-mentioned problems, the present invention is based on the premise that a liquid-permeable top sheet, a liquid-impermeable back sheet, and a sheet interposed between these two sheets. A liquid-absorbent core, having a front and rear waist region and a crotch region, and having a longitudinal direction and a width direction, extending at least from the both side edges of the core in the crotch region outward in the width direction; A disposable wearing article having side flaps with elastically stretchable members attached in directions.

[0008] Under such a premise, a first feature of the present invention is that the side flaps are bent inward of the article to form a first portion and a second portion located above the first portion. The first portion and the second portion are separated from each other in the longitudinal direction, and are joined to each other at a pair of seal portions inclined so that the opposing interval gradually increases from the inside to the outside of the article. The first portion and the second portion are provided with first and second elastic members extending in the longitudinal direction as the elastic members in an extended state.

[0009] Under such a premise, a second feature of the present invention is that the side flaps are bent inward of the article to form a first portion and a second portion located above the first portion. A pair of seals defined and inclined so that the first portion and the second portion in the crotch region are opposed to each other in the longitudinal direction and the opposing interval gradually increases from the inside to the outside of the article. Parts, and the elastic member is attached to at least one of the first portion and the second portion in an extended state.

[0010] Under such a premise, a third feature of the present invention is that the side flaps are bent inward of the article and further bent out of the article to form a first portion and a first portion. A second portion located above the portion, and a third portion located above the second portion, wherein the first portion and the second portion are opposed to and separated from each other in the longitudinal direction; A pair of first seal portions that are inclined so that the opposing interval gradually increases from the inside to the outside of the article are joined to each other, and the second portion and the third portion are positioned between the first seal portions. A first elastic member extending in the longitudinal direction as the elastic member is attached to the first portion in an extended state, and at least one of the second portion and the third portion is attached to the first portion. The elasticity In the second elastic members extending in the longitudinal direction as wood are attached in a stretched state.

As an example of the embodiment of the present invention having the first feature, when the elastic members are released from the extended state and contracted at the first portion and the second portion, respectively. The contraction dimension of the second elastic member located at the second portion is larger than that of the first elastic member located at the first portion.

As an example of an embodiment of the present invention having a third feature, the elastic members are released from their extended states and contracted at the first portion and the second and third portions. In some cases, a contraction dimension of the second elastic member located on at least one of the second portion and the third portion is larger than that of the first elastic member located on the first portion.

As an example of an embodiment of the present invention having the first to third features, the side flaps extend from the both side edges of the core outward in the width direction and the back sheet, At least one of which is formed.

As another example of the embodiment of the present invention having the first to third features, the side flap is joined to the upper surface of the top sheet near each of both side edges of the core to form the side edge. It is formed of a liquid-resistant sheet extending outward in the width direction from each of the liquid-resistant sheets, and the back sheet overlapped with the liquid-resistant sheet and joined to each other.

Another example of the embodiment of the present invention having the first to third features is that the core is spaced apart from a side edge in the crotch region in the longitudinal direction so as to oppose and separate from the inner side of the article. It has a substantially hourglass shape in which a concave notch is formed by a pair of edges which are inclined so as to gradually increase the opposing interval, and the seal portion is parallel to the edges.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the disposable wearing article according to the present invention will be described below with reference to the accompanying drawings, taking a disposable diaper as an example.

FIGS. 1 and 2 are a partially broken plan view of the disposable diaper 1 and a plan view of the diaper 1 showing a state before the side flaps 5 are bent. In FIG. 1, FIG. Side flaps 5 extending outward from the respective side edges 4a in the width direction are bent in the direction indicated by the arrow in the first folding curve 30. The disposable diaper 1 is interposed between the liquid-permeable top sheet 2, the liquid-impermeable back sheet 3, and the top sheet 2 and the back sheet 3, and is bonded to at least one of the inner surfaces of the sheets 2 and 3. Side flap 5 which is formed of the absorbent core 4 which is bent inwardly of the diaper 1 at the first bent portion 30, a front waist region 20 in the longitudinal direction crossing the width direction, and a rear waist region A region 22 and a crotch region 21 located between the front and rear waist regions 20 and 22 are provided.

The core 4 has a side edge 4a in the crotch region 21.
And a pair of edges 4b opposed to and separated from each other in the longitudinal direction of the core 4 and gradually increasing in facing distance from the inner side to the outer side of the diaper 1, and has a substantially hourglass shape in which a concave notch is formed.

The side flaps 5 are provided on both side edges 4 a of the core 4.
Each of the top sheet 2 and the back sheet 3 extends outward in the width direction, and includes a base portion 5d along the side edge 4a of the core 4 and an opposing side portion 5e parallel to the base portion 5d. A first folding curve 30 extends in the longitudinal direction of the diaper 1 between the base side portion 5d and the opposite side portion 5e of the side flap 5.

FIG. 3 is a view showing a cross section taken along line AA of FIG. The side flap 5 has a base portion 5d in the width direction.
A first portion 5a extending outward in the width direction of the diaper 1 between the first fold line 30 and the first folding curve 30;
A second portion 5b extending inward in the width direction of the diaper 1 is defined between the folding curve 30 and the opposing side portion 5e.

The first portion 5a and the second portion 5b of the side flap 5 are opposed to each other with a center line X bisecting the longitudinal direction of the diaper 1 therebetween, and extend in a direction intersecting the longitudinal direction of the diaper 1. They are joined to each other at the first seal portion 6a. The first seal portion 6a is inclined so as to gradually move away from the center line X from the inside to the outside of the diaper 1, and the core 4
Extend in parallel with the edge 4b.

On the first portion 5a of the side flap 5, three elastic elastic members 8 extending in the longitudinal direction of the diaper 1 are provided.
It is interposed between the top sheet 2 and the back sheet 3 and is joined to the inner surface of at least one of the sheets 2 and 3 in an extended state. Opposite side 5e of side flap 5
, Two elastically stretchable members 7 extending in the longitudinal direction of the diaper 1 are interposed between the top sheet 2 and the back sheet 3, and extended on the inner surface of at least one of the sheets 2 and 3. Are joined. These elastic members 7, 8
Extends between the first seal portions 6a.

When the elastic members 7, 8 are released from the extended state, the elastic members 7, 8 located at the second portion 5b contract when the elastic members 7, 8 contract at the first portion 5a and the second portion 5b. The size is larger than that of the elastic member 8 located on the first portion 5a. In order to make the contracting dimension of the elastic member 7 larger than that of the elastic member 8, the elastic member 7 may be joined to the second portion 5 b in a state of being extended more than the elastic member 8.

In the front and rear waist regions 20 and 22, film-like elastic members 9 and 10 extending in the width direction of the diaper 1 along the edges of the front and rear waist regions 20 and 22 are provided with the top sheet 2 and It is interposed between the back sheet 3 and joined to the inner surface of at least one of the sheets 2 and 3 in an extended state. The base ends of a pair of tape fasteners 11 extending inward in the width direction of the diaper 1 are interposed between the top sheet 2 and the back sheet 3 at both side edges of the rear waist region 22. , 3 in a non-peelable manner. At the free end of the tape fastener 11, one of the hook member and the loop member of the mechanical fastener 12 is attached.

As shown by the imaginary line in FIG. 3, when the longitudinal direction of the diaper 1 is curved downward, the side flaps 5 are moved so that the second portion 5b of the side flaps 5 is located between the first seal portions 6a. In FIG. 5, the first portion 5a and the second portion 5b of the side flap 5 are connected to each other between the first seal portions 6a by the contraction force of the elastic member 7.
Is formed to open toward the inside of the pocket. Second
Since the elastic member 7 located at the portion 5b contracts more than the elastic member 8 located at the first portion 5a, the first portion 5
a of the elastic member 8 of the second portion 5b even if the elastic member 8 of FIG.
Is maintained, and the standing second portion 5b does not fall down.

FIG. 4 is a view showing a cut surface of the side flap 5 having a structure different from that of FIG. The side flaps 5
A liquid-resistant sheet 9 joined to the upper surface of the top sheet 2 in the vicinity of each of the side edges 4a of the core 4 and extending outward in the width direction from the side edges 4a of the core 4, and outward in the width direction from the both edges 4a of the core 4. The back sheet 3 extends. The side flaps 5 are bent inward of the diaper 1 at a first folding curve. The excrement exuding to the side edge of the top sheet 2 does not leak out from the side flap 5 because the liquid-resistant sheet 9 serves as a barrier.

FIG. 5 is a perspective view of the diaper 1 and shows a state in which the tape fastener 11 of the rear waist region 22 is engaged with the front waist region 20. A target tape 1 made of the other member of the mechanical fastener is provided in the front waist region 20.
3 is attached. The diaper 1 has front and rear waist areas 20,
When the side flaps 5 located on both side edges of the tape 22 are expanded and the tape fastener 11 is engaged with the target tape 13, a waist opening 25 and a pair of leg openings 26 are formed. In the crotch region 21 of the diaper 1, the second portion 5b of the side flap 5 extends toward the inside of the diaper 1. When each of the elastic members 7, 8, 9, 10 contracts,
Gathers are formed in the waist opening 25 and the leg opening 26.

FIGS. 6 and 7 are a partially cutaway plan view of the disposable diaper 1 in a mode different from that of FIG. 1 and a view showing a cross section taken along line BB of FIG. A first fold curve 30 extends in the longitudinal direction of the diaper 1 near the proximal side 5d between the proximal side 5d and the opposite side 5e of the side flap 5, and the longitudinal direction of the diaper 1 near the opposite side 5e. The second fold curve extends. The side flaps 5 are bent inward of the diaper 1 by a first folding curve 30 and bent outside of the diaper 1 by a second folding curve 31.

The side flap 5 is located between the base side 5d and the first folding curve 30 in the width direction and extends outwardly in the width direction of the diaper 1; and a first portion 5a is located above the first portion 5a. The diaper 1 between the first folding curve 30 and the second folding curve 31
A second portion 5b extending inward in the width direction of the diaper 1 and a third portion 5c located above the second portion 5b and extending outward in the width direction of the diaper 1 between the second folding curve 31 and the opposing side portion 5e. It is defined.

The first portion 5a and the second portion 5b of the side flap 5 are opposed to each other with a center line X bisecting the longitudinal direction of the diaper 1 therebetween, and extend in a direction intersecting the longitudinal direction of the diaper 1. They are joined to each other at the first seal portion 6a. The first seal portion 6a extends from the inside to the outside of the diaper 1 so as to be inclined so as to gradually move away from the center line X. Second part 5b and third part 5c of side flap 5
Is joined to each other by a second seal portion 6b extending in the longitudinal direction of the diaper 1 between the first seal portions 6a along the first folding curve 30.

The first portion 5a of the side flap 5 includes three elastic members 8 extending in the longitudinal direction of the side flap 5.
Is interposed between the top sheet 2 and the back sheet 3 and is joined to at least one of the inner surfaces of the sheets 2 and 3 in an extended state. In the vicinity of the second fold curve, two elastic members 7 extending in the longitudinal direction of the side flap 5
Is interposed between the second portion 5b and the third portion 5c, and is joined to the outer surface of the backsheet 3 in an extended state. These elastic members 7, 8 extend between the first seal portions 6a. The elastic member 7 may be interposed between the top sheet 2 and the back sheet 3 and joined to the inner surface of at least one of the sheets 2 and 3 in an extended state. 2nd part 5b
The contracting dimension of the elastic member 7 located between the first portion 5a and the third portion 5c is larger than that of the elastic member 8 located at the first portion 5a.

As shown by the phantom line in FIG. 7, when the longitudinal direction of the diaper 1 is curved downward, the side flaps 5 are provided with a second portion 5b and a third portion 5c.
Indicate a tendency to rise upward between the first seal portions 6a due to the contraction force of the elastic member 7 and between the first seal portions 6a, the first portion 5a and the second portion 5 of the side flap 5.
b form a pocket 25 that opens toward the inside of the diaper 1. The side flaps 5 may be formed by the liquid-resistant sheet 9 and the back sheet 3 as in FIG.

FIG. 8 is a view showing a cross section taken along line CC of FIG. First part 5a and second part 5b of side flap 5
Are joined at the first seal portion 6a, and the second
The portion 5b and the third portion 5c are in a non-joined state at the first seal portion 6a. In the first seal portion 6a, the rigidity of the joining portion is higher than that of the other portions, and gives a hard feeling when it comes into contact with the body. The first seal part 6a is connected to the third part 5c.
, The first seal portion 6a does not directly contact the body.

The diaper 1 can form a pocket 25 without joining a separate member to the upper surface of the side flap 5, and can prevent lateral leakage of excrement. Front and rear waist area 2
At the side edges of 0 and 22, the wings extending outward in the width direction can be formed by expanding the bent side flaps 5 without cutting the crotch region 21. A concave portion can be formed in the diaper 1.

The diaper 1 shown in FIG.
Can be made smaller than that of the diaper 1 of FIG. 1 so that the top sheet 2 is not widely covered even when the side flaps 5 fall down inside the diaper 1. , Does not hinder the absorbability of the core 4.

As the top sheet 2, a non-woven fabric obtained by treating a hydrophobic non-woven fabric with a hydrophilic agent or a hydrophilic non-woven fabric formed by fibers kneaded with a hydrophilic agent is used. Instead of these nonwoven fabrics, a thermoplastic synthetic resin film having openings may be used.

As the back sheet 3 and the liquid-resistant sheet 9, a synthetic resin film or a laminate sheet of a synthetic resin film and a hydrophobic nonwoven fabric is used. Core 4
Is a mixture of fluff pulp and superabsorbent polymer particles, compressed to a required thickness, and entirely covered with a water-permeable sheet such as tissue paper. For joining these members, an adhesive such as a hot-melt adhesive or an adhesive, and a technique of heat welding to each member can be used.

[0038]

According to the disposable wearing article according to the present invention, a pocket opening toward the inside of the article can be easily formed without joining another member to the upper surface of the side flap. The first seal portion is opposed to and separated in the longitudinal direction of the article, and extends obliquely so that the opposed interval gradually increases from the inside to the outside of the article, and the inflow port for excrement is narrow and the inside is wide. Therefore, it is possible to prevent the excrement flowing into the pocket from flowing out.

Further, since the first seal portion is inclined so as to be parallel to the end edge of the core, the expansion limit when forming the wing portion by expanding the both ends in the longitudinal direction of the side flap outward. And a natural contact with the wearer's thigh obliquely.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of a disposable diaper.

FIG. 2 is a plan view of a diaper showing a state before bending a side flap.

FIG. 3 is a view showing a cross section taken along line AA of FIG. 1;

FIG. 4 is a view showing a cut surface of a side flap having a configuration different from that of FIG. 3;

FIG. 5 is a perspective view of the diaper showing a state in which the tape fastener is engaged with the front waist region.

FIG. 6 is a partially broken plan view of the diaper in a mode different from that of FIG. 1;

FIG. 7 is a view showing a section taken along line BB of FIG. 6;

FIG. 8 is a view showing a cross section taken along line CC of FIG. 6;

[Explanation of symbols]

 Reference Signs List 1 disposable diaper 2 liquid-permeable top sheet 3 liquid-impermeable back sheet 4 liquid-absorbent core 4a side edge 4b end edge 5 side flap 5a first part 5b second part 5c third part 5d base side 5e opposing side part 6a 1st seal part 6b 2nd seal part 7 Elastic elastic member 8 Elastic elastic member 9 Liquid resistance sheet 30 1st fold curve 31 2nd fold curve X center line

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B029 BD01 BD06 BD09 BD12 BD13 BD17 4C098 AA09 CC07 CC10 CC12 CC15 CE07

Claims (8)

[Claims] 1. A liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between these two sheets, a front and rear waist region, a crotch region, a longitudinal direction and a width. A disposable wearing article having side flaps extending at least in the width direction from each side edge of the core in the crotch region and having an elastically stretchable member attached in the longitudinal direction. Is bent inside the article,
A first portion and a second portion located above the first portion, wherein the first portion and the second portion are spaced apart from each other in the longitudinal direction and from the inside to the outside of the article First and second elastic members extending in the longitudinal direction as the elastic members, the first and second parts being joined to each other at a pair of seal portions inclined so that the opposing interval gradually increases. Is attached in an extended state. 2. A contraction of the second elastic member located at the second portion when each of the elastic members is released from an extended state and contracts at the first portion and the second portion. 2. The wearing article according to claim 1, wherein a size of the first elastic member is larger than that of the first elastic member located in the first portion. 3. A liquid-permeable topsheet, a liquid-impervious backsheet, and a liquid-absorbent core interposed between the two sheets, the front and rear waist region, the crotch region, the longitudinal direction and the width. A disposable garment having side flaps extending outwardly in the width direction from both side edges of the core and the imaginary extension lines extending in the longitudinal direction, respectively, and having an elastic elastic member attached in the longitudinal direction. In the article, the side flap is bent inward of the article,
A first portion and a second portion located above the first portion, wherein the first portion and the second portion in the crotch region are:
The pair of seal portions are opposed to each other in the longitudinal direction, and are joined to each other at a pair of seal portions that are inclined so that the opposing interval gradually increases from the inside to the outside of the article. Is
The wearing article, wherein the elastic member is attached in an extended state. 4. A liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between these two sheets, a front and rear waist region, a crotch region, a longitudinal direction and a width. A disposable wearing article having side flaps extending at least in the width direction from each side edge of the core in the crotch region and having an elastically stretchable member attached in the longitudinal direction. Is bent inward of the article, and further bent out of the article to form a first portion, a second portion located above the first portion, and a second portion located above the second portion. The first portion and the second portion are opposed to each other in the longitudinal direction and are inclined so that the opposing interval gradually increases from the inside to the outside of the article. The second portion and the third portion are joined to each other at a second seal portion located between the first seal portions, and the elastic portion is attached to the first portion. A first elastic member extending in the longitudinal direction is attached as a member in an extended state, and a second elastic member extending in the longitudinal direction as the elastic member is attached to at least one of the second portion and the third portion in an extended state. The wearing article characterized by being attached by: 5. When at least one of the elastic members is released from the extended state and contracts at the first part and the second and third parts, at least the second part and the third part are separated from each other. The wearing article according to claim 4, wherein a contraction dimension of the second elastic member located on one side is larger than that of the first elastic member located on the first portion. 6. The side sheet according to claim 1, wherein the side flaps are formed in at least one of the top sheet and the back sheet extending outward in the width direction from both side edges of the core. The wearing article according to any one of the above. 7. A liquid-resistant sheet, wherein the side flaps are joined to an upper surface of the top sheet near respective side edges of the core and extend outward from the respective side edges in the width direction. The wearing article according to any one of claims 1 to 5, wherein the wearing article is formed by the back sheet and the back sheet overlapped and joined to each other. 8. The core in the crotch region having a side edge and a pair of edges which are spaced apart from each other in the longitudinal direction and inclined so as to gradually increase the opposing distance from the inside to the outside of the article. The wearing article according to any one of claims 1 to 7, wherein the wearing article has a substantially hourglass shape having a concave notch, and the seal portion is parallel to the edge.