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Absorbent article

An absorbent and high-absorbency technology, applied in absorbent pads, medical science, clothing, etc., can solve problems such as insufficient prevention of airtightness, leakage, etc.

Active Publication Date: 2011-01-12
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since air impermeability is most likely to occur in the absorber and its vicinity rather than the side panels, air impermeability cannot be sufficiently prevented by merely imparting air permeability to the side panels.
In addition, if the absorption capacity of the absorbent body is reduced, the absorbent body will become thinner and the air permeability of the absorbent body will be improved, but on the contrary, leakage will easily occur.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0231] First, a fiber bundle of crimped acetate long fibers is prepared. The fiber diameter of the long fibers was 2.1 dtex. The total fiber content of the fiber bundle is 25,000 dtex. This fiber bundle was conveyed under stretching, and opened using an air opening device to obtain an opened fiber web. Next, the opened fiber web is carded by passing the spread fiber web between a roll having a plurality of disks assembled at predetermined intervals around the shaft and a smooth backup roll. Thereafter, it was adjusted to a width of 100 mm, transferred to a vacuum conveyor in a state where the conveying speed was reduced, and the tension of the fiber web on the vacuum conveyor was eased to express curls. The crimp rate of the long fibers in the fiber web was 30%, and the number of crimps per 1 cm was 15. This expands the space between the long fibers, making it easy for the superabsorbent polymer to enter, and also thickens the fiber web to improve the embedding retention of...

Embodiment 1-2

[0235] Except that the mass per unit area of ​​the superabsorbent polymer in Example 1-1 on the fiber net is 260 g / m 2 Other than that, in the same manner as in Example 1-1, the superabsorbent polymer was embedded and held in the spread fiber web. Next, deposit the fiber-opened fluff pulp on a T-shaped mold to obtain a mass per unit area of ​​100g / m 2 of fiber aggregates. The mold of T shape is identical with embodiment 1-1. Overlap the fiber web on the fiber accumulation body, and make them whole with a mass per unit area of ​​16 g / m after hydrophilization treatment 2 The spunbond-meltblown-spunbond nonwoven fabric (SMS) was wrapped to obtain an absorbent body. The mass per unit area of ​​the entire absorber is 477g / m 2 , The thickness is 2.0mm. Other than that, it carried out similarly to Example 1-1, and obtained the disposable diaper.

Embodiment 1-3

[0237] In Example 1-1, the opening width of the fiber bundle was 125 mm, and the spreading amount of the superabsorbent polymer was 90 g / m 2 , except that, it carried out similarly to Example 1-1, and obtained the absorbent body and the disposable diaper.

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PUM

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Abstract

The invention discloses an absorbent article which comprises an absorbent comprising a sheet of a fibrous material and, covered therewith, an absorbing core comprising a web made of hydrophilic crimped long fibers and a highly absorbing polymer embedded and held in the web. The long fibers preferably are oriented in a direction parallel to the plane of the absorbent. Also provided is an absorbentarticle which comprises an absorbent comprising a web made of hydrophilic crimped long fibers and, superposed thereon, a pile layer or nonwoven fabric which is constituted of a natural pulp and / or synthetic fibers and optionally contains a highly absorbing polymer, wherein the long fibers are oriented in a direction parallel to the plane of the absorbent.

Description

technical field [0001] The present invention relates to absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads. Background technique [0002] An absorbent body of an absorbent article using a continuous filament spread fiber bundle is known. For example, an absorber composed of a fiber bundle layer of crimped acetate fiber and a pulverized pulp layer laminated on one side of the layer is known, and the two layers are integrated by applying pressure in the thickness direction of the absorber (see Japanese Patent Application Laid-Open No. 57-160457). According to this absorber, the diffusibility of body fluid is improved. However, since acetate fiber is inferior to pulp in water absorption capacity, it is necessary to use a large amount of pulverized pulp in order to increase the absorption capacity of the absorbent body. As a result, the absorber becomes thick, and the wearing feeling of the absorbent article decreases. [0003] In addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/49A61F13/53A61F13/15A61F13/494A61F13/539A61F13/515
CPCA61F13/53743A61F13/533A61F13/531A61F13/53708A61F13/53418A61F2013/530481A61F13/536A61F13/49A61F13/494A61F13/53A61F13/539
Inventor 幸田拓也笠井孝夫加藤隆弘新家昌彦
Owner KAO CORP