JP2523701Y2 - Disposable wearing articles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to disposable wearing articles such as diapers and training pants.

[0002]

2. Description of the Related Art A disposable diaper, for example, a disposable diaper, has a liquid permeability in a central area for allowing excrement to permeate from a surface and to be absorbed by a liquid absorbing core, and in both side areas, a leg surrounding. It is necessary to have liquid impermeability in order to prevent leakage of excrement from the body, and there are basically the following two forms conventionally.

In the first embodiment, the surface in contact with the wearer's skin is formed of a liquid-permeable sheet, and cuffs (side flaps) located on both sides are provided on both sides of the sheet and the wearer's skin. And the both sides of the liquid-impervious back sheet that do not come into contact with the sheet.

[0004] In a second embodiment, a liquid-permeable sheet has a surface that comes into contact with the wearer's skin, and cuffs (side flaps) located on both sides are connected to both sides of the sheet. It is composed of

[0005]

In the first embodiment, the cuffs on both sides have liquid-impervious sheets on the back surface, but have liquid-permeable sheets on the surface. Therefore, excrement is easily diffused on the surface and leaks from between the surface and the wearer's skin.

In the second embodiment, since the cuffs on both sides are formed, it is necessary to connect a liquid-impermeable sheet different from the liquid-permeable topsheet to the cuff. This complicates the diaper manufacturing process and apparatus, which results in a high diaper manufacturing cost.

An object of the present invention is to configure a liquid-permeable region and a cuff region on the surface of an article in order to eliminate the above-mentioned conventional disadvantages.

[0008]

As shown in the drawings, this invention for solving the above-mentioned problem involves interposing a front sheet 1, a liquid-impermeable back sheet 2, and front and back sheets 1 and 2. a liquid-absorbent core 3 is, Ri consists a liquid-impervious cuff extending from both side edges near the core 3, the cuff portion, the first cuff
7 and a second cuff section 8, and the first cuff section 7
Shrinkage of the elastic member 10 which expands and contracts in the length direction of the edge
Assume a disposable wearing article that is formed to rise by force .

In the present invention, on the premise, the topsheet 1 is made of a hydrophobic material and has a first region 5 and a second region 4 that is seamlessly continuous on both sides of the first region 5. . The first region 5 is located on the upper surface of the core 3 and is substantially
A liquid- permeable region in which a large number of circular openings 6 having a diameter of 0.2 to 2 mm are arranged . The second region 4 is a liquid-impermeable region that does not have an opening and forms a cuff.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a disposable diaper according to the present invention.

FIG. 1 shows a part of one of the left and right side portions of the diaper, and the part is symmetrical left and right (see FIGS. 2 and 3). The diaper includes a top sheet 1, a back sheet 2, a core 3, and a cuff (side flap) portion 4.

The topsheet 1 is made of a hydrophobic material,
It has a first region 5 and a second region 4 that is seamlessly continuous on both sides of the first region 5 and forms a cuff portion. First
The region 5 is a liquid-permeable region located on the upper surface of the core 3 and having a large number of apertures 6 arranged at given intervals. Second area 4
Is a liquid-impermeable region having no opening 6.

The second region 4 comprises a first cuff portion 7 extending upward in an inverted U-shape to form a three-dimensional structure, and a second cuff portion 8 extending laterally outward from a lower edge thereof. . Second
The cuff portion 8 is reinforced by integrally joining with the portion 9 of the back sheet 2 extending laterally outward from the side edge of the core 3. An elastic member 10 that extends and contracts in the length direction is interposed in the free edge of the first cuff portion 7. Although not shown, an elastic member that expands and contracts in the length direction may be interposed in the vicinity of the outside of the second cuff portion 8 and the back sheet portion 9 as necessary.

The opening 6 has a liquid guide tube 11 projecting from the back surface of the topsheet 1. The planar shape of the opening 6 is
Although it is circular, it may be irregular, such as elliptical or cloud, or square. The liquid guide tube 11 has a tube wall formed so as to gradually become thinner toward the lower end, but may have a tube wall formed so as to gradually increase toward the lower end, or may be formed so that the tube wall becomes vertical. The tube itself may be provided as long as the opening 6 has a function of effectively passing the excreted liquid from the surface of the topsheet 1 and effectively preventing the excreted liquid from flowing back to the surface. It may not be formed at all. In order to have such a function, when the opening portion 6 is circular, it is preferable that the diameter thereof is 0.2 to 2 mm and the total area ratio is 30 to 60%.

The material of the topsheet 1 may be a fibrous nonwoven fabric such as spunbond, meltbond, meltblown, or the like;
A plastic film or the like is used. Back sheet 2
As the material of the core 3, a plastic film, a waterproof nonwoven fabric, or the like is used, and as the material of the core 3, a material obtained by mixing highly absorbent polymer particles with ground pulp is used. As a material of the elastic member 10, a ribbon made of plastic such as natural rubber, synthetic rubber, or polyurethane is used.

Although not shown, on the back surface of the topsheet 1, in order to effectively prevent the excrement absorbed by the core 3 from flowing back from the opening 6 to the top surface of the topsheet 1,
In some cases, a hydrophobic fiber aggregate layer that forms a large amount of space between the lower surface of the topsheet 1 and the upper surface of the core 3 and separates the topsheet 1 from the upper surface of the core 3 is interposed.

[0017]

According to the wearing article of the present invention having the above-described structure, the liquid-permeable region at the center and the liquid-impermeable regions on both sides, that is, the cuff portion, are constituted by one surface sheet. In particular, when the cuff portion has a three-dimensional structure, it is not necessary to use another sheet to constitute the cuff portion, and the structure of the article is extremely simplified, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a part of a disposable diaper as an example of a wearing article according to the present invention.

FIG. 2 is a schematic plan view in which a top sheet of the diaper is developed.

FIG. 3 is a schematic perspective view of the top sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top sheet 2 Back sheet 3 Core 4 2nd area 5 1st area 6 Opening part 7 1st cuff part 8 2nd cuff part 10 Elastic member

Claims (1)

(57) [Scope of request for utility model registration] 1. A topsheet, a liquid-impervious backsheet, a liquid-absorbent core interposed between the front and backsheets, and a liquid-impervious cuff extending from the vicinity of both side edges of the core. Consisting of
And the cuff portion includes a first cuff portion and a second cuff portion.
Wherein the second cuff is located along the length of its free edge.
To be raised by the contraction force of the elastic member
In the disposable wearing article being formed, the topsheet is made of a hydrophobic material, and has a first region and second regions that are seamlessly continuous on both sides of the first region. An area is located on the top surface of the core and is substantially circular.
A liquid- permeable region in which a large number of openings having a diameter of 0.2 to 2 mm are arranged , and wherein the second region has no openings and forms the cuff. The said article characterized by the above-mentioned.