JPH0614949A - Disposable sanitary absorbing material - Google Patents

Abstract

PURPOSE:To solve the problem of stuffiness by inserting an absorption panel integrally covered with a liquid-nonpermeable sheet at the bottom face and the periphery section between surface and back sheets made of a moisture- permeable material, and connecting the portions of the surface and back sheets extended to the outside from both sides of the absorption panel. CONSTITUTION:A disposable diaper is provided with a moisture-permeable surface sheet 1, a moisture-permeable back sheet 2, and an absorption panel 4 integrally covered with a liquid-nonpermeable sheet 3 at the bottom face and the periphery section, and the surface and back sheets 1, 2 are connected together at the portions extended to the outside from both sides of the absorption panels 4. Elastic members 5 are inserted between the surface and back sheets 1, 2 at the portions of the connection sections around legs, and a fastening piece 6 is fitted around the waist on the back side. The panel 4 is formed into a shape provided with recessed sections at the center portion on both sides, the liquid-nonpermeable sheet 3 is folded from the back face to the upper face of the outer periphery and fixed, and the region of the absorption panel 4 is made a complete leak-proof structure.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, for example, in a disposable diaper, a liquid-impermeable and moisture-permeable plastic film is used as a back sheet of the disposable diaper to prevent internal stuffiness during wearing. As this film, it is general that an inorganic substance is included in the film to form innumerable fine pores.

[0003]

However, there is a tradeoff between liquid impermeability and moisture permeability that the back sheet should have, so there is a limit to moisture permeability, and the prevention of stuffiness is still insufficient. is there. Further, since the back sheet is generally made of a plastic film, the back sheets rub against each other to produce an unpleasant sound, have low strength and are easily broken, and are expensive.

An object of the present invention is to eliminate the above-mentioned problem by imparting liquid impermeability only to a necessary area of the absorption panel and imparting sufficient moisture permeability to other areas.

[0005]

The present invention is predicated on a disposable hygiene absorbent article having an absorbent panel interposed between a top sheet and a back sheet, and is characterized by the following points.

That is, the panel is integrally covered with a liquid-impervious sheet that is folded back from the back surface of the panel to at least both upper surfaces of the periphery of the panel, and the back sheet is provided with a moisture-permeable sheet. And the liquid permeable surface sheet is used to extend outward from the peripheral edge of the panel and the extending portions are joined together.

In a preferred embodiment, the liquid-impervious sheet is composed of a heat-shrinkable plastic sheet, and is integrated with the panel under heat shrinkage in the covering state of the panel. Fibers are included, and the liquid-impermeable sheet is fused to the panel, and a nonwoven fabric is used for the back sheet.

[0008]

In the worn state of the article, the liquid excreted by the panel is prevented from leaking from at least the lower surface thereof by the liquid-impermeable sheets located on the upper surfaces on both sides thereof, while the vapor inside the article is at least The light is transmitted to the outside through the front and back sheet portions that extend outward from the peripheral edge of the panel.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The following is a description of an embodiment of the article according to the present invention, taking a diaper as an example, with reference to the drawings.

In FIGS. 1 and 2, a diaper is an absorbent panel 4 in which a liquid-permeable top sheet 1, a moisture-permeable back sheet 2 and a liquid-impermeable sheet 3 are integrally covered on the bottom and peripheral portions.
And a leg elastic member 5 interposed between the front and back sheets 1 and 2 which extend outward from both sides of the panel 4 and are joined to each other.
And a fastening piece 6 attached around the back waist.

In FIG. 3, the panel 4 is formed in an hourglass shape having recesses on both sides, and the liquid-impermeable sheet 3 is folded and fixed from the back surface to the upper surface of the outer periphery thereof. In order to do so, as shown in FIG. 4, the film 3 is heated while heating the film 3 with the heat-shrinkable and liquid-impervious plastic film 3 covering the back surface of the panel 4 and the upper surface of the outer periphery thereof. At the same time as shrinking along the outer periphery, it is fused to the panel 4. In this case, the panel 4 preferably contains an appropriate amount of thermoplastic fibers.

A non-woven fabric or a porous plastic film can be used for the top sheet 1, a non-woven fabric for the back sheet 2, and a molded product made of a mixture of fluff pulp, a super absorbent polymer and a thermoplastic fiber for the panel 4. Of course, a moisture-permeable film can be used as the film (liquid-impermeable sheet) 3 as well, but the moisture permeability thereof is the back sheet 2
It is possible to use one lower than that of the non-woven fabric. This is because, for the intended purpose of the present invention, it is not necessary to use one having a moisture permeability equal to or higher than that of the back sheet, and one having no moisture permeability may be used.

[0013]

According to the article of the present invention having the above structure, the area of the absorbent panel is completely leakproof, and even if it does not have moisture permeability at all, it is outside from the outer periphery of the panel. Since the region extending to has sufficient moisture permeability, stuffiness is less likely to occur during wearing, and solves the above-mentioned problems due to stuffiness and problems due to using a plastic film as the back sheet at once. be able to. Moreover, since the panel is integrally covered with the liquid-impervious sheet, it does not lose its shape.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of a disposable diaper.

FIG. 2 is a cross-sectional view of the diaper.

FIG. 3 is a perspective view in which the diaper is unfolded and a part thereof is cut away.

FIG. 4 is a perspective view of a process of covering and fixing the absorbent panel with a liquid-impermeable sheet.

[Explanation of symbols]

 1 Front sheet 2 Back sheet 3 Liquid impermeable sheet 4 Panel

Claims (4)

[Claims] 1. A disposable hygiene absorbent article in which an absorbent panel is interposed between a top sheet and a back sheet, wherein the panel is a liquid-impermeable liquid folded from the back surface of the panel to at least both upper surfaces of its periphery. The back sheet is integrally covered with a permeable sheet, and the back sheet uses a moisture permeable sheet, and extends outward from the peripheral edge of the panel together with the liquid permeable front sheet and joins the extending portions to each other. The article as described above. 2. The article according to claim 1, wherein the liquid-impervious sheet is made of a heat-shrinkable plastic sheet and is integrated with the panel under heat shrinkage in the state of being covered with the panel. 3. The article according to claim 1, wherein the panel contains thermoplastic fibers, and the liquid-impermeable sheet is fused to the panel. 4. The article according to claim 1, wherein a nonwoven fabric is used for the back sheet.