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absorbent article

A technology of absorbency and articles, applied in the direction of absorbent pads, medical science, bandages, etc.

Active Publication Date: 2022-02-22
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Patent Document 4, there is no specific description about the shape of the fragments of the nonwoven fabric used for the buffer layer, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • absorbent article
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2

[0179] made with figure 1 The shown sanitary napkin 1 is a sanitary napkin having the same structure.

[0180] As the front sheet, use a grammage of 30g / m 2 air-through non-woven fabric, as the back sheet, use 37g / m 2 polyethylene resin film. Using a fiber mass and water-absorbent fibers as the fiber material of the absorbent core, and further using a separately prepared core wrapping device, the absorbent body is manufactured according to a conventional method using a known fiber stacking device. Fiber blocks are manufactured according to Image 6 , The raw fiber sheet is cut into cubes and manufactured.

[0181] As the raw fiber sheet of the fiber block, thermoplastic fibers (fiber diameter: 18 μm) containing polyethylene resin and polyethylene terephthalate resin are used, and the grammage of the constituent fibers is 21 g / m 2 Air-through non-woven fabric (a fiber sheet with a heat-welded portion that constitutes fibers). As the water-absorbent fibers, softwood bleach...

Embodiment 2

[0184] (packet chip of embodiment 2)

[0185] Coniferous bleached kraft pulp (NBKP) with a roundness of 0.80 and a grammage of 16.0 g / m that have been mercerized 2 , Density 0.069g / cm 3 of paper.

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Abstract

The absorbent article (1) of the present invention includes an absorber (4) and a topsheet (2) disposed on the skin-facing side of the absorber (4). The absorbent body (4) includes a liquid-absorbent absorbent core (40) and a wrapping core (41) covering the skin-facing surface of the absorbent core (40). The absorbent core (40) includes water-absorbent fibers (12F) and a fiber mass (11) including weakly water-absorbent fibers (11F) lower in water absorbency than the water-absorbent fibers (12F). The ratio of the liquid diffusion area of ​​the absorbent core (40) to the liquid diffusion area of ​​the core wrap (41) is 0.7 or more in terms of the former / the latter.

Description

technical field [0001] The present invention relates to absorbent articles such as sanitary napkins. Background technique [0002] Generally, absorbent articles such as disposable diapers and sanitary napkins include a front sheet disposed relatively close to the wearer's skin, a back sheet disposed relatively far from the wearer's skin, and a back sheet disposed between the two. It is composed of the absorber between the sheets. Typically, the absorbent body includes an absorbent core constituting the main body of the absorbent body and a core sheet covering the surface of the absorbent core. In many cases, the absorbent core is mainly composed of water-absorbing fibers such as wood pulp, and further includes Made of absorbent polymer particles. With regard to absorbent bodies used in absorbent articles, improvement of various properties such as softness (cushioning properties), compression recovery properties, and shape retention properties is a major technical problem. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/537A61F13/53
CPCA61F5/44A61F13/53A61F13/535A61F13/537A61F13/538
Inventor 金子将也汤山晓
Owner KAO CORP