JPH11113953A - Disposable wear article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the fitting property of openings around legs, and prevent a leakage from arising by a method wherein gathers around legs for a disposable wear article are formed of a plurality of stretchable elastic members, and the stretchable elastic members are arranged into a curved line form which curves in such a manner that they may cross with each other at one point in parts around legs of a wearer. SOLUTION: At a pair of openings 3 around legs corresponding with the femoral regions of both legs in a shorts type diaper 1, a plurality of stretchable elastic members 8 around legs in order to form gathers 7 around legs by drawing the openings 3, are arranged. When the plurality of the stretchable elastic members 8 are arranged, respective stretchable elastic members 8 are arranged into curved line form which curves in such a manner that the members 8 may cross with each other at one point at the openings around legs of a wearer. By this method, the fitness of the openings around legs is increased without obstructing a motion of the wearer, and a leakage is prevented from arising, and at the same time, a followability for the motion can be favorably maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear-on article such as a diaper, incontinence pants and training pants, and more particularly, to a use which can form a gather around the wearer's leg around the opening around the wearer. It relates to an article to be worn.

[0002]

2. Description of the Related Art In a conventional wear-on-use article, an absorber is interposed between a liquid-permeable top sheet and a liquid-impermeable backsheet, and elastic members are provided near both longitudinal edges of the absorber. The arrangement forms a gather around the leg, which serves to hold the article to be worn and to prevent excretion from leaking from around the leg. For this reason, with respect to the gather around the leg, many methods have been devised such as a method of disposing an elastic member.
257, JP-A-4-317649, or JP-A-4-317650, Japanese Utility Model Laid-Open No. 4-1048.
26 and the like.

[0003] Usually, the leg-surrounding gasser is provided with a plurality of mutually parallel elastic elastic members in the vicinity of both longitudinal edges of an absorber provided between a continuous backsheet and a continuous topsheet, each of which is formed in a belt shape. It is arranged so as to meander in an S-shape, and is determined in advance by the direction of the supply device for the elastic material around the legs held by the traverser.

In the conventional wearing article, the arrangement interval of the plurality of elastic members constituting the gather around the leg is not constant over its entire length. When the arrangement interval of the elastic members increases, the compression area is dispersed and conversely narrow. Then, the compression area tends to concentrate. If the arrangement of the elastic members is not appropriate, the pressing force is too strong, which may hinder the wearer's operation or give the wearer discomfort. Further, even if the pressing force is too weak, there is a possibility that a leak may be caused because the fitting property is deteriorated.

[0005]

DISCLOSURE OF THE INVENTION The present invention aims to improve the fit of an opening around a leg and prevent leakage without hindering a wearer's movement, and to provide a wearable wearing article excellent in wearing feeling. Is to provide.

[0006]

The present invention provides a liquid-permeable topsheet and a liquid-impermeable backsheet, and an absorber provided between the topsheet and the backsheet.
In a worn article having a leg gather including elastic members formed near both longitudinal edges of the absorber, the leg gather is formed of a plurality of elastic members, and The present invention relates to a disposable wearing article characterized in that the plurality of stretchable elastic members are arranged in a curved shape so as to intersect at one point around the wearer's leg.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A plurality of elastic members constituting the leg gathers are arranged in a curved shape so as to intersect each other at one point at the leg opening. For example, if there is an intersection around the leg on the abdomen (foresight) of the wearable item, it may hinder the movement of the front around the leg, such as the wearer raising the thigh and bending the upper body. In addition, there is an effect of preventing leakage from the inseam caused by a gap generated in the inseam due to movement. As described above, it is often preferable that the intersection of the plurality of elastic members is provided around the abdominal leg of the worn article, but since human actions are various, it is possible to cope with the emphasis operation. The position can be freely selected and is not particularly limited.

[0008] In the plurality of elastic members constituting the gather around the leg, the distance between the elastic member and the elastic member disposed farthest (outermost) from the absorber is zero.
A plurality of elastic members that intersect at an opening around the leg of about 50 mm preferably have an intersection angle of 5 to 30 degrees in terms of fit and wearer comfort.

Regarding the mutual arrangement interval of the plurality of elastic members constituting the leg gathers, the above-mentioned effect can be sufficiently obtained if they intersect each other at one point in the leg opening. The arrangement intervals of the elastic members in the front body or the rear body may be equal or unequal.

[0010]

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments. FIG. 1 shows the appearance of an embodiment in which the wearing article of the present invention is applied to a pants-type diaper, and FIG. 2 shows a plan view of the developed article.

That is, the pants-type diaper 1 of the present embodiment has a waist opening 2 corresponding to a waist and a pair of leg openings 3 corresponding to the thighs of both legs.
And a liquid-impermeable back sheet 4 forming these openings 2 and 3 together with a liquid-permeable top sheet to be described later, and a waist elasticity for narrowing the waist opening 2 to form a waist gather 5. A member 6, a leg elastic member 8 for narrowing the leg opening 3 to form the leg gather 7, and an absorber extending from the crotch portion between the leg opening 3 to the abdomen and the back, respectively. 9 is provided. Further, the pants-type diaper 1 is joined so as to be deployable as shown in FIG. 2 by peeling off the joining flap portion 10 located on the side of the diaper.

That is, the joining flap portions 10 before and after the back sheet 4 are overlapped from the unfolded state shown in FIG. 2, and these contact portions are joined by hot melt bonding, pressure melting bonding, or the like.
Alternatively, the pants-type diaper 1 shown in FIG. 1 can be obtained by joining by an ultrasonic fusion bonding method or the like alone or in an appropriate combination.

The absorber 9 is arranged at the center of the back sheet 4 in the width direction. Further, the widthwise inner ends of the pair of left and right side top sheets 11 are overlapped with the widthwise opposite ends of the absorber 9, and the widthwise outer ends of these side topsheets 11 are joined to the backsheet 4. I have. The center top sheet 1 superposed on the absorber 9 is provided at the inner end in the width direction of the side top sheet 11.
2 are integrally joined at both ends in the width direction, and the side sheet 11 and the center top sheet 12 constitute the top sheet of the present invention.

Both ends in the width direction of the center top sheet 12 are inner flaps 13 for forming three-dimensional gathers. And center top sheet 1
2 are folded at both ends in the width direction, and the elastic member 1
4 is wound in an extended state, and the tip of the inner flap 13 is tightened along its longitudinal direction so as to be in close contact with the wearer's skin.

The leg gathers 7 are formed by a plurality of elastic members 8 which are arranged in a curved line so as to intersect at one point at the opening around the leg of the wearer. The back sheet 4 and the pair of left and right side top sheets 11 are joined in an extended state along the peripheral opening 3. Here, the interval between the plurality of leg elastic members 8 is 0 to 50 mm, and the intersection angle is 5 to 30 degrees.
Degree is desirable from the viewpoint of preventing leakage and improving fit.

Similarly, the elastic member 6 around the waist for forming the waist gather 5 is also provided with the back sheet 4 and the side top sheet 11 along the waist opening 2.
And the center top sheet 12 in an extended state.

Here, as the back sheet 4, a liquid impermeable polyethylene sheet or the like can be used. More preferably, in order to prevent stuffiness, 20 to 40 having a large number of micropores that are not permeable to liquid molecules
μm-thick polyethylene sheet, or a liquid-impermeable sheet with moisture permeability that has been stretched by adding a filler to a thermoplastic resin, or a composite sheet in which a nonwoven fabric is attached to the outside of these sheets. Extra moisture can be released to the outside of the diaper, making it less likely to cause stuffiness and rash, and is comfortable in terms of moisture permeability and feel.

The absorber 9 is preferably made of fluff pulp and a high-absorbency polymer in combination. In addition, a single absorbent paper, or a mixture or laminate of heat-fused fibers is used. In addition, it is preferable to mix or laminate the superabsorbent polymer between the upper and lower fluff pulp in a layered form, and to form a laminated structure in which the whole is wrapped in tissue,
The shape of the absorber 9 may be an hourglass type or a rectangular shape, but the hourglass type provides better fit.

As the side top sheet 11, a nonwoven fabric of synthetic fiber made of polyethylene, polypropylene, polyester, or another thermoplastic resin is used, and the side top sheet 11 is desirably water-repellent. A liquid non-permeable material may be formed by laminating a film made of a thermoplastic resin on a nonwoven fabric.

As the center top sheet 12, a liquid-permeable non-woven fabric sheet of synthetic fiber made of polyethylene, polypropylene, polyester or other thermoplastic resin is used, but the inner flap 13 which forms a three-dimensional gather is formed. It is more preferable that only the both end portions of the center top sheet 12 be processed to have water repellency.

Further, a waist elastic member 6 provided along the waist opening 2, a plurality of leg elastic members 8 provided along the leg opening 3, or an elastic member for forming a three-dimensional gather. As the elastic member 14, urethane thread or urethane tape, thread rubber, raw rubber, or the like can be used as it is, and these are intermittently formed by spiral spraying or curtain coating on predetermined positions of the back sheet 4 and the center top sheet 12. Are adhered and fixed in a stretched state along the hot melt adhesive applied to the adhesive.

In the present invention, the movement of the wearer is hindered by arranging the plurality of elastic members 8 around the legs around the wearer's leg openings so as to intersect each other at one point. In addition, leakage can be prevented by improving the fit of the leg opening, and the followability to movement is improved.

In the above-described embodiment, the pants-type diaper has been described. However, the present invention can be applied to a deployment-type diaper.

FIG. 3 shows the appearance of another embodiment according to the present invention, and FIG. 4 shows the plan shape thereof. Members having the same functions as those of the previous embodiment are denoted by the same reference numerals. And its explanation is omitted. That is, the deployable diaper 15 in this embodiment includes a center top sheet 12 that forms a liquid-permeable top sheet, side top sheets 11 that are joined to both left and right ends of the center top sheet 12 in the width direction, and these center top sheets. A liquid-impermeable back sheet 4 superposed on the sheet 12 and the side top sheet 11; an absorber 9 provided between the back sheet 4 and the center top sheet 12; A pair of recesses 16 formed in a curved shape curved on both sides in the width direction of the side top sheet 11 and the back sheet 4 to form the leg opening 3 when worn, and one longitudinal end of the absorber 9 in the longitudinal direction. Center top sheet 12 and side top sheet 11
And the backsheet 4, and a leg-surrounding elastic member 8 for forming a leg-surround gather 7 that becomes the leg-surround opening 3 when worn.

In this case, the waist-surrounding elastic member 6
Is formed only on one end side in the longitudinal direction of the absorber 9.
In addition, the plurality of leg surrounding elastic members 8 (two in the illustrated example)
The opening around the wearer's leg is curved along the hollow 16 so as to intersect at a single point at the opening around the wearer's leg. Further, the side top sheet 11 and the back sheet 4 located at both ends in the longitudinal direction of the absorber 9 are formed with side flaps 17 extending outward in the width direction of the absorber 9, and the side flaps 17 at one end are formed. On both sides in the width direction, a pair of left and right adhesive tapes 18 are attached together with a base tape 19 to overlap and connect the side flap portions on the other end side.

[0026]

As described above, in the wear-on-wear article according to the present invention, the plurality of leg elastic members are arranged in a curved line so as to intersect each other at one point in the leg opening. In response to various actions of the wearer such as raising the part or bending the upper body, by properly setting the position of the intersection of the elastic elastic member,
It is possible to prevent the movement from being hindered, to improve the fit of the opening around the leg to prevent leakage, and to have excellent follow-up to the movement.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an embodiment in which a worn article according to the present invention is applied to a pants-type diaper.

FIG. 2 is a plan view of the pants-type diaper shown in FIG.

FIG. 3 is a perspective view showing the appearance of an embodiment in which the wearable article according to the present invention is applied to a deployable diaper.

FIG. 4 is a plan view showing a state in which the unfolded diaper shown in FIG. 3 is unfolded.

[Explanation of symbols]

 1: Underpants diaper 2: Waist opening 3: Leg opening 4: Back sheet 5: Waist gather 6: Waist elastic elastic member 7: Leg elastic 8: Leg elastic elastic member 9: Absorber 10: Joining flap portion 11: Side top sheet 12: Center top sheet 13: Inner flap 14: Elastic elastic member 15: Expandable diaper 16: Gouge portion 17: Side flap portion 18: Adhesive tape 19: Base tape

Claims (1)

[Claims] 1. A liquid-permeable topsheet and a liquid-impermeable backsheet, an absorber provided between the topsheet and the backsheet, and a stretch formed near both longitudinal edges of the absorber. A wearable article having a leg gather including an elastic member, wherein the leg gather is formed of a plurality of stretchable elastic members, and the plurality of stretchable elastic members are provided around the wearer's leg. A disposable wearing article characterized in that the parts are arranged in a curved shape so as to intersect with each other at one point.