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Absorbent article

An absorbent and high-absorbency technology, applied in absorbent pads, textiles, papermaking, medical science, etc., can solve the problems that the absorbent body cannot fully follow, does not have stretchability, and the thickness of the absorbent layer increases.

Inactive Publication Date: 2006-02-22
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the thickness of the absorbing layer will increase
[0005] Moreover, none of the above-mentioned absorbers has stretchability, so when wearing an absorbent article such as a disposable diaper incorporating the absorber, the absorber cannot sufficiently follow the movement of the wearer, and the absorber is prone to misalignment. , reduced sense of fit

Method used

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  • Absorbent article
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Examples

Experimental program
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Effect test

Embodiment approach

[0057]In the relationship between the mass per unit area of ​​each layer, when the mass per unit area of ​​the fiber web 2 is relatively small and the mass per unit area of ​​the polymer layer 3 is relatively large, the superabsorbent polymer is buried and loaded on the thickness direction of the fiber web 2. the whole area. As a result, the difference between the adjacent polymer layers 3, 3 and the fiber webs 2, 2 is unclear in appearance, and the superabsorbent polymer appears to be distributed over the entire thickness direction of the absorbent body 1. Case. That is, the present invention includes the following embodiments: an absorbent body comprising a substrate composed of a fiber web of hydrophilic long fibers having a crimp rate of 40% to 90%, and a substrate uniformly embedded and distributed in the substrate. Superabsorbent polymer over the entire thickness direction.

[0058] The superabsorbent polymer is stably held in the space formed by the crimped long fiber...

Embodiment 1-1

[0176]Manufactures absorbers for disposable diapers for babies. First, a fiber bundle of crimped acetate long fibers is prepared. The fiber diameter of the long fibers was 2.1 dtex, and the total fiber content of the fiber bundle was 25,000 dtex. The fiber bundle was opened to a width of 100 mm using an air opening device, and stretched to 1 / 2 of the maximum drawn length to obtain an opened fiber web. At this time, the curl rate was 70%, and the number of curls per 1 cm was 15. In this state, the hot-melt adhesive was sprayed on the surface of the spread fiber web. Coating amount is 5g / m 2 . Then, on the coated surface of the hot melt adhesive, use 130g / m 2 The dispersed mass per unit area uniformly disperses the particles of the superabsorbent polymer in a layered form. After the spreading is completed, the stretched state of the opened fiber web is released. In this way, the spread fiber web is shrunk, and the particles of the superabsorbent polymer are embedded and s...

Embodiment 1-2

[0179] In Example 1-1, an absorbent body was obtained in the same manner as in Example 1-1, except that the fiber webs were not bonded together using a hot-melt adhesive. The mass per unit area of ​​the absorber as a whole is 443g / m 2 , The thickness is 2.7mm.

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Abstract

An absorbent article has an absorbent member 1 containing a web (2) of hydrophilic long fibers. The long fibers have a crimp percentage of 40% to 90% and are oriented in the planar direction of the absorbent member (1). The web 2 has a superabsorbent polymer embeddedly supported therein. The absorbent member (1) preferably has two or more webs (2) and a superabsorbent polymer layer (3) sprinkled between the webs (2), with part of the superabsorbent polymer being embeddedly supported in the web (2).

Description

technical field [0001] The present invention relates to absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads. The present invention also relates to an absorbent body used in an absorbent article, particularly a stretchable absorbent body, and a manufacturing method thereof. Background technique [0002] Absorbent bodies for absorbent articles using an open fiber bundle of continuous single fibers are known. For example, there has been disclosed an absorbent body composed of a crimped acetate fiber bundle layer and a pulverized pulp layer laminated on one side of the layer, and by compressing the two layers in the thickness direction of the absorbent body, It is obtained by integrating them (refer to Japanese Patent Application Laid-Open No. 57-160457). It is believed that the absorber can improve the diffusion of body fluids. However, since cellulose acetate has a lower water absorption capacity than pulp, it is necessary to use a large a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/15D04H3/00
CPCA61F13/53A61F13/15658A61F13/511A61F13/538D04H3/00
Inventor 笠井孝夫幸田拓也新家昌彦
Owner KAO CORP