JPH0824290A - Disposable wearing product - Google Patents

Abstract

PURPOSE:To prevent the spillage of a body liquor near a portion at which first and second elastic members cross each other when an elastic member surrounding legs of a disposable wearing product is made up of the first elastic member positioned in the first half thereof and the second elastic member positioned in the second half thereof. CONSTITUTION:An elastic member surrounding legs of a wearing product such as disposable diaper is made up of a first circular arc member 15 positioned mainly in the first half of a part 14 surrounding the legs, a second circular arc elastic member 16 which is positioned mainly in the second half thereof and crosses the first elastic member 15 at the central part in the longitudinal direction of a crotch section 8 and a third elastic member 17 which crosses the first and second elastic members 15 and 16 to be stretchable in the longitudinal direction of the product 1. The part 14 surrounding the legs is surrounded by the first, second and third elastic members 15, 16 and 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to disposable wearable articles such as disposable diapers and training pants.

[0002]

2. Description of the Related Art Heretofore, it has been known as a conventional technique to attach an elastic member along the circumference of the legs of these wearable articles and bring the parts into close contact with the circumference of the wearer's legs. Further, there is a technique in which an elastic member of a wearing article based on such a technique is constituted by a first elastic member attached to a front half of a leg and a second elastic member attached to a rear half of the leg, as disclosed in US Pat. No. 4,897,084.
It is known from Japanese Patent Laid-Open Publication No. 3-186263. By using these known techniques, it is possible to adopt different conditions for the front half and the latter half of the leg circumference, for example, different conditions regarding the types of elastic members, the number of used elastic members, intervals, contracting force, and the like. It is possible to obtain a worn article which is excellent in wearing feeling and leakproofness of body fluid.

According to the teaching of US Pat. No. 4,897,084, in a disposable diaper, the base end is placed at the center of the rear region in the width direction, and the disposable diaper is arranged along the front half around the left and right legs. While the first elastic member is attached to the V-shape, the base end is placed in the center of the front area in the width direction, and the second elastic member is attached to the inverted V-shape along the rear halves around the left and right legs. Intersect the first and second elastic members in the vicinity of the legs in the front-rear center of the crotch region,
The leg surrounding portion can be surrounded by the first elastic member and the second elastic member.

According to the teaching of Japanese Patent Laid-Open No. 3-186263, for example, in a disposable diaper, the first elastic member is attached to the front half around each leg, and the second elastic member is the latter half around each leg. The inner ends in the longitudinal direction of the first and second elastic members can be crossed at the central portion of the crotch region in the front-rear direction.

[0005]

FIG. 7 shows a backsheet 12 of a disposable diaper according to the above-mentioned known technique.
The first and second elastic members 1 in the front half and the rear half of the leg periphery of the
It is a top view which shows an example which attached 5 and 16 and made them cross at the angle A in the center part of a crotch area. When this diaper is bent in two and the front body and the back body are overlapped with each other, the first and second elastic members 15 and 16 can form a loop that can be tightly attached around the wearer's leg. However, when the crossing angle A becomes smaller, the first and second elastic members 15 and 16 have a problem that it becomes difficult for the vicinity of the crossing to closely contact with the legs and the body fluid easily leaks therefrom. Inseam area
The problem cannot be neglected in the worn article where the excretion of body fluid is concentrated and the elastic members intersect in the area.

In order to solve such a problem, the contraction force of the elastic member may be increased. However, while such means solves the problem of the site concerned, it causes a problem of impeding blood circulation around the legs and impairing the wearing feeling of the article, and thus cannot be a complete solution.

Therefore, according to the present invention, the third elastic member which is capable of expanding and contracting in the front-rear direction of the worn article intersects the first elastic member and the second elastic member along the front half and the rear half of the leg periphery. It is an object to solve the above-mentioned problem by mounting and surrounding the leg periphery with these first, second and third elastic members.

[0008]

[Means for Solving the Problems] The present invention provides means for solving the above problems as follows.

According to the present invention, the top sheet, the back sheet, and the elastic members attached along the leg periphery formed by recessing arcuately on the left and right sides of the crotch region located between the front and rear regions of these two sheets. It is premised on a disposable wearing article having.

Under such a premise, the elastic member is a stretchable first elastic member that draws a substantially circular arc mainly along the front half of the leg periphery, and a substantially circular arc that mainly draws a substantially circular arc along the rear half. An elastic second elastic member that intersects with the first elastic member at the center portion in the front-rear direction of the crotch region;
The first elastic member and the second elastic member are formed by a third elastic member that intersects each of the first and second elastic members on the outer side of the intersecting portion and that can expand and contract in the front-back direction of the wearing article. It is a feature of the present invention that the leg portions are surrounded by elastic members.

In one embodiment of the present invention, the first elastic members and the second elastic members of the left and right leg peripheral portions are connected to each other in the crotch region. Further, in another embodiment, one of the first elastic members of the left and right leg portions is connected to the other second elastic member in the crotch region. In still another embodiment, the first and second elastic members are elastic ribbons, and the third elastic member is a stretchable sheet extending between the left and right sides of the crotch region.

[0012]

In the thus constructed wearing article, the third elastic member that can expand and contract in the front-rear direction of the wearing article is made to intersect in the vicinity of the intersection of the first and second elastic members and the two elastic members. Even when the crossing angle between the two parts is relatively small, the leg periphery of the wearing article adheres to the wearer due to the expansion and contraction of the third elastic member.

[0013]

EXAMPLES Details of a disposable wearing article according to the present invention will be described.
Taking a disposable pants-type diaper as an example, the description will be made with reference to the accompanying drawings.

FIG. 1 is a perspective view of a disposable pants-type diaper 1 in a worn state, but the wearer is not shown. The diaper 1 has a waist circumference opening 2 and a pair of left and right leg circumference openings 3, and a waist elastic member 4 and leg elastic members 5 are provided along the entire circumference of each of the openings 2 and 3. . Diaper 1
The front and rear bodies forming the front and rear sections 6 and 7 overlap each other on both the left and right sides and are integrated at a joining line 9.

FIG. 2 is an exploded perspective view of the diaper 1 shown with the diaper 1 cut open along the joining line 9 and extended forward and backward. The diaper 1 includes a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and a liquid-absorbent core 13 interposed between the sheets 11 and 12 in the thickness direction thereof.
The top sheet 11 and the back sheet 12 are watertightly joined to each other at portions extending from the peripheral edge of the core 13, and the core 13 is intermittently joined to at least one of the both sheets 11 and 12. The longitudinal direction of the diaper 1 is the front and rear areas 6, 7
And the crotch region 8 interposed between these regions, and there are leg surrounding portions 14 formed of arcuate recesses on both left and right sides of the crotch region 8. Top sheet 11 of back sheet 12
The first, second and third elastic members 15, 16 and 17 for the legs are provided on the inner surface facing the hot melt adhesive (not shown).
It is installed by. First, second and third elastic members 15, 1
Reference numerals 6 and 17 each include one or two or more elastic ribbons, and the first and second elastic members 15 and 16 have at least an arc-shaped portion extending along the leg-surrounding portion 14 and have a third elastic member. 17 is in a state of extending in the front-rear direction.

FIG. 3 is a plan view showing the inner surface of the back sheet 12, and includes first, second and third elastic members 15, 16 and 17.
The installation state of is clarified. First elastic member 15
Is located in the front half of the leg-surrounding portion 14 and extends from around the left leg of the wearer (around the leg on the right side in the figure) to the right leg (around the leg on the left side in the figure) through the crotch region 8. . The second elastic member 16 is located in the rear half of the leg-surrounding portion 14, and extends from around the left leg of the wearer to the right leg through the crotch region. The first and second elastic members 15 and 16 respectively draw a U-shape and an inverted U-shape at approximately the center of the crotch region, intersect on both left and right sides of the region 8, and form intersections 20 and 21. The third elastic members 17 are attached to the left and right sides of the crotch region 8 in the longitudinal direction of the diaper 1, and the intersection points 2
0 and 21 are slightly closer to the side edges of the diaper 1, the first and second elastic members 15 and 16 intersect, and the intersection 2
2 and 23 are formed.

Thus, the first, second and third elastic members 15, 1
When the diaper 1 in the extended state with the attached 6, 17 is folded inward with the top sheet 11 inward along the center line XX (see FIG. 3) that bisects the longitudinal direction, and joined at the joint line 9. , The left and right leg-surrounding portions 14 respectively form the leg-surrounding openings 3, and the outer end portions 15A of the first elastic member 15 are
15B and the outer end portions 16A and 16B of the second elastic member 16 substantially overlap each other, and the first elastic member 15 and the second elastic member 16 are elastic around the leg, which is a loop expandable and contractible in the direction around the leg of the wearer. The member 5 is formed (see FIG. 1). However,
The first and second elastic members 15 and 16 draw a lateral V-shape at the intersections 20 and 21 and the portions in the immediate vicinity thereof.
Since the elastic member does not extend in the leg-surrounding direction, the adhesion to the leg tends to be worse than other parts. However, in this diaper 1, the third elastic member 17 expands and contracts in the leg direction in the vicinity of the intersections 20 and 21 so as to compensate for the expansion and contraction in the leg direction, so that the diaper 1 can be brought into close contact with the wearer's leg. .
When the opening angle of the V-shape is 140 ° or less, the adhesion to the leg becomes particularly bad. Therefore, when the third elastic member 17 is applied to such a small opening angle, the leakproof effect becomes remarkable.

4, 5 and 6 are plan views similar to FIG. 3 illustrating an embodiment of the present invention. In FIG. 4, the first elastic member 15 extends from the front half around the left leg (around the right leg in the figure) to the rear half around the right leg (around the left leg in the figure) through the crotch region 8, and the second elastic member 15 16 extends from the front half around the right leg to the rear half around the left leg through the crotch region 8, and both elastic members 15 and 16 form an intersection 20 near the left leg surrounding portion 14. The third elastic member 17 intersects the first and second elastic members 15 and 16 at the center of the crotch region 8.
In FIG. 5, the first and second elastic members 15 and 16 are attached substantially linearly so as to draw an X shape, and the third elastic member 17 is attached to the first and second elastic members 15 and 16 in the central portion of the crotch region 8. 1
It intersects with 6.

FIG. 6 is also a plan view of the back sheet 12 showing an example of the embodiment. In this example, the third elastic member 17 made of an elastic sheet that extends in the front-rear direction of the diaper 1.
Is attached to the inner surface of the back sheet 12. In the crotch region 8 of the diaper 1, a wide range to which the third elastic member 17 is attached can be contracted in the front-back direction, and the crotch region of the wearer can be widely adhered to effectively prevent lateral leakage of body fluid. it can.

In the wearing article according to the present invention, when the liquid-absorbent core 13 is used as in the disposable diaper 1, the rigidity of the core 13 does not hinder the expansion and contraction of the third elastic member 17, and the member 17 The mounting position of the core 13
It is necessary to appropriately separate it from the side edge of
The separation distance is preferably 5 mm or more. First, second
The elastic members 15 and 16 do not necessarily need to traverse the crotch region 8 from left to right as illustrated in FIGS. 3 to 6, and may be in a state of being cut at the crotch region 8. , Again, it doesn't have to exist there. In any case, the first and second elastic members 15 and 16 have the leg opening 3
The outer end portions 15A, 15B, 16A, 16B are provided in the upper portion of the above, and the inner end portion is provided in the lower portion of the leg surrounding opening portion 3. Area 8
When it crosses the diaper 1, the members 15 and 16 can be referred to as the inner ends of the diapers 1 which are separated from the leg portions 14 and start to move in the direction of the center line that divides the diaper 1 into right and left. In the embodiment, this inner end is the crotch region 8
Although it is located at the central part in the front-rear direction, it can be offset to either one of the front-rear direction. These first, second and third elastic members 15, 16 and 17 are normally attached to the inner surface of the back sheet 12, but they are attached to the top sheet 11, or the first and second elastic members 15 and
The 16 and the third elastic member 17 can be attached to different sheets 11 or 12 from each other.

Materials commonly used in the art can be used for the wearing article according to the present invention. A well-known joining technique or heat fusion technique can be used for joining and attaching for assembling these materials.

[0022]

In the wearing article according to the present invention, the first and second elastic members attached to the front and rear halves around the leg are substantially arcuate, and the third elastic member extends in the front-rear direction. Since the legs are crossed to surround the legs and have elasticity in the legs 'circumferential direction, even if it is difficult for the first and second elastic members to stretch and contract in the legs' circumferential direction at the intersecting site, leakage of body fluid from the site can be prevented. Can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a disposable diaper (disposable wearing article).

FIG. 2 is an exploded perspective view of the disposable diaper extended to the front and back.

FIG. 3 is a plan view of a back sheet.

FIG. 4 is a plan view of a back sheet showing an example of an embodiment.

FIG. 5 is a plan view of a back sheet showing another example of the embodiment.

FIG. 6 is a plan view of a back sheet showing still another example of the embodiment.

FIG. 7 is a plan view of a back sheet of a diaper according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper (disposable wearing article) 5 Leg elastic member 6 Front area 7 Rear area 8 Inseam area 11 Topsheet 12 Backsheet 15 First elastic member 16 Second elastic member 17 Third elastic member

Claims (4)

[Claims] 1. A top sheet, a back sheet, and elastic members attached along leg circumferences which are recessed in an arc shape on both left and right sides of a crotch region located between front and rear regions of these two sheets. A disposable wearing article, wherein the elastic member is a stretchable first elastic member that draws a substantially circular arc mainly along the front half of the leg portion, and the first elastic member that draws a substantially circular arc mainly along the rear half. An elastic second elastic member that intersects with the elastic member and the central portion of the crotch region in the front-rear direction intersects with each of the first and second elastic members on the outer side of the intersecting portion, and the front-rear direction. The wearing article characterized by comprising a third elastic member capable of expanding and contracting in a direction, and enclosing the leg periphery with these first, second and third elastic members. 2. The first elastic members of the left and right leg surrounding portions,
The wearing article according to claim 1, wherein the second elastic members are connected to each other in the crotch region. 3. The wearing article according to claim 1, wherein one of the first elastic members of the left and right leg portions is connected to the other second elastic member in the crotch region. 4. The wearing article according to claim 1, wherein the first and second elastic members are elastic ribbons, and the third elastic member is a stretchable sheet extending between right and left sides of the crotch region. .