JPH0824291A - Disposable wearing product - Google Patents

Abstract

PURPOSE:To prevent the leakage of a body liquor from a part surrounding legs even when inner end parts of an elastic member are isolated from each other at the central part of a crotch section by mounting elastic members stretchable in the longitudinal direction of a wearing product crossing one another along the first and second halves of the part surrounding the legs to surround the part surrounding the legs with the elastic members. CONSTITUTION:A first elastic member 15 is positioned in the first half of a part 14 surrounding legs and extends about the right leg via the central part in the longitudinal direction of a crotch section 8 from the perimeter of the left leg of a wearing person. A second elastic member 16 is positioned in the second half of the part 14 surrounding legs and extends about the right leg via the central part of the crotch section from the perimeter of the left leg. The elastic members 15 and 16 are isolated from each other depicting a figure of U and an inverted U figure at the central part of the crotch section. The third elastic member 17 extends in the longitudinal direction of a diaper 1 on the right and left of the crotch section 8 and crosses the first and second elastic members 15 and 16 at the central part of the crotch section 8 to form an intersection. A stretchable elastic member surrounding legs is formed stretchable in the direction of surrounding the legs of a wearing person by the 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, a U-shape is drawn from the front half around the left leg to the front half around the right leg through the crotch region. While attaching the first elastic member as described above, the second elastic member is attached so as to draw an inverted U-shape from the rear half around the left leg to the rear half around the right leg through the crotch region,
In the crotch region, the first elastic member and the second elastic member can be separated by a required size without intersecting each other.

FIG. 5 shows the elastic member 1 around the first and second legs on the back sheet 12 of the disposable diaper based on the above-mentioned known technique.
It is a top view which shows the state which attached 5 and 16 to U-shape and reverse U-shape. The first and second elastic members 15 and 16 are in the crotch region 8
Are separated by a distance D in the central portion in the front-rear direction.

[0005]

The back sheet 12 of FIG.
When the front section 6 and the rear section 7 are overlapped with each other, the diaper having the first and second elastic members 15 and 16 forms a substantial loop so that the diaper can be closely attached to the wearer's leg. However, since the first and second elastic members 15 and 16 are separated from each other in the central portion of the crotch region 8, there is a problem that it is difficult for the first elastic member 15 and the second elastic member 16 to closely contact with the legs and the body fluid easily leaks therefrom. Inseam area 8
Is a place where excretion of body fluid is particularly concentrated, and the problem cannot be neglected.

In order to solve such a problem, the contraction force of the elastic member may be increased. However, while such a 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, a third elastic member which can be expanded and contracted in the front-rear direction of a worn article is attached so as to intersect with 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 of the present invention to solve the above-mentioned problem by 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 attached so as to be expandable and contractable in a substantially arcuate manner mainly along the front half of the leg periphery, and has an inner end portion in the front-rear center of the crotch region. A second elastic member, which is attached to the elastic member so as to be expandable and contractable in a substantially arc shape mainly along the rear half, and has an inner end portion separated from the inner end portion of the first elastic member at the center of the crotch region. And, in the central part,
It is constituted by a third elastic member that intersects each of the elastic members and is capable of expanding and contracting in the front-back direction of the wearing article, and the first, second, and third elastic members surround the leg surrounding portion. It is a feature.

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 another aspect, the first and second elastic members are elastic ribbons,
The elastic member is composed of one stretchable sheet extending between the left and right sides of the crotch region.

[0012]

In the wearing article constructed as described above, the third elastic member capable of expanding and contracting in the front-back direction of the wearing article intersects the first and second elastic members in the central portion of the crotch region, and these first, second, and third elastic members are provided. Since the legs are surrounded by the elastic members, the legs of the wearing article can be brought into close contact with the wearer even if the first and second elastic members are separated in the crotch region.

[0013]

EXAMPLES Details of a disposable wearing article according to the present invention will be described.
A disposable pants-type diaper will be described below 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 circumference elastic member 4 and a leg circumference elastic member 5 are provided along the openings 2 and 3, respectively. The front and rear areas 6, 7 of the diaper 1 are overlapped on each of 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
6 and 17 are each made of one 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,
The 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 the wearer's left leg (the right leg in the figure) to the right leg (the left leg in the figure) through the front-rear center of the crotch region 8. ) Has been extended to. 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 center of the crotch region. First and second elastic members 15, 1
6 respectively depict a U-shape and an inverted U-shape at the center of the crotch region and are separated from each other by a distance D. The third elastic member 17 extends in the front-back direction of the diaper 1 on each of the left and right sides of the crotch region 8, intersects with the first and second elastic members 15, 16 at the center of the crotch region 8, and forms intersections 22, 23. ing. These first, second and third elastic members 15, 1
6 and 17 are in a state of surrounding the leg surrounding portion 14.

Thus, the first, second and third elastic members 15, 1
The diaper 1 in the stretched state in which 6 and 17 are attached has the top sheet 11 folded inward along the center line X-X that bisects the front-rear direction and joined at the joining line 9 so that the left and right legs are surrounded. Each of the portions 14 forms the leg opening 3, and the outer end portions 15A and 15B of the first elastic member 15 and the outer end portions 16A and 16B of the second elastic member 16 substantially overlap each other, and the first elastic member 15 is formed. The second elastic member 16 and the third elastic member 17 form a leg elastic member 5 that is substantially a loop that can expand and contract in the wearer's leg direction (see FIG. 1).

FIG. 4 is a plan view similar to FIG. 3 illustrating one embodiment of the present invention. In this example, diaper 1
The third elastic member 17 made of a stretchable sheet that extends in the front-back direction is attached to the inner surface of the back sheet 12,
The left and right side edges of the elastic member 17 are respectively the first and second elastic members 1.
It intersects with 5 and 16. 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 embodiment, the core 13 is used.
The mounting position of the member 17 needs to be appropriately separated outward from the side edge of the core 13 so that the rigidity of the third elastic member 17 is not hindered from expanding or contracting, and the separation distance is preferably 5 mm or more. To When the third elastic member 17 is a stretchable sheet, both side edges thereof are extended from the side edges of the core 13 by 5 mm or more. First and second elastic members 1
As illustrated in FIGS. 3 and 4, 5 and 16 do not require that the crotch region 8 is traversed from left to right, and may be in a state of being cut at the crotch region 8. , Again, it doesn't have to exist there. In either case, the first and second elastic members 15 and 16 have outer end portions 15A, 15B, 16A and 16B at the upper portion of the leg-surrounding opening 3 and inner end portions at the lower portion of the leg-surrounding opening 3. It has
When the first elastic member 15 and / or the second elastic member 16 cross the crotch region 8, the members 15, 1
The part where 6 moves away from each leg opening 3 and starts to move in the direction of the center line that divides the diaper 1 into left and right can be referred to as the inner end. In the embodiment, the inner end portion is located at the center portion of the crotch region 8 in the front-rear direction, but it is also possible to shift it to either the front or rear. These first, second and third elastic members 15, 16 and 17 are usually attached to the inner surface of the backsheet 12, but they are attached to the topsheet 11 or the first and second elastic members 1 are attached.
5, 16 and the third elastic member 17 are different from each other in the seat 1
It can also be attached to 1 or 12.

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.

[0021]

In the wearing article according to the present invention, the first and second elastic members attached so as to draw an arc in the front half and the rear half around the leg are crossed with the third elastic member extending in the front-rear direction. Since the leg surroundings are surrounded and the leg is stretchable in the circumferential direction, even if the inner ends of the first and second elastic members are separated from each other in the center of the crotch area, body fluid leaks from the relevant parts. 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 similar to FIG. 3 illustrating a prior art disposable diaper.

[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 (3)

[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. In the disposable wearing article, the elastic member is elastically attached mainly along the front half of the leg portion in a substantially arcuate manner and has an inner end portion in the front-rear center of the crotch region. A member, and a second elastic member that is attached to be expandable and contractable in a substantially arc shape mainly along the rear half and has an inner end portion separated from the inner end portion of the first elastic member in the central portion; The first elastic member is formed by a third elastic member that intersects each of the first and second elastic members at the central portion and is capable of expanding and contracting in the front-rear direction of the wearing article. Characterized by surrounding the surrounding area It said wearing article to be. 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. 3. 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. .