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A breathable non-woven fabric, a method for manufacturing the same, and an absorbent article

A load-bearing, composite fiber technology for absorbent pads, nonwovens, textiles, and paper, which can solve problems of high density

Inactive Publication Date: 2020-10-09
JNC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second sheet of Patent Document 1 has high density and flexibility

Method used

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  • A breathable non-woven fabric, a method for manufacturing the same, and an absorbent article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Manufactured a sheath-core composite fiber with a fineness of 5.6dtex, a sheath component of polyethylene, and a core component of polyethylene terephthalate, with a weight per unit area of ​​31g / m 2 of non-woven fabrics. First, the composite fiber is formed into a web by a carding method. Using a hot air circulation suction belt dryer (suction band dryer) at 138°C, hot air is passed through the obtained web to bond the intertwined points between the fibers constituting the web, and the web is immediately compressed using metal rollers , to forcibly promote thermal bonding between fibers, thereby making it.

[0069] The non-woven thickness ratio of the non-woven fabric=0.69, 50gf / cm 2 The fiber surface area per unit volume under load is 95cm 2 / cm 3 , the return liquid was 1.6g, and good results were obtained.

Embodiment 2～ Embodiment 3

[0071] The nonwoven fabric described in Table 1 was produced in the same manner as in Example 1 using the concentric sheath-core type thermally adhesive conjugate fiber described in Table 1. Table 1 shows the results of evaluation performed in the same manner as in Example 1. In addition, as the raw material fiber, a sheath-core composite fiber of 9.0 dtex in Example 2 and 20 dtex in Example 3, in which the sheath component is polyethylene and the core component is polyethylene terephthalate, was used as the raw material of the nonwoven fabric.

[0072] Both suppressed liquid return and obtained good results.

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Abstract

The present invention provides a breathable non-woven fabric, a method for manufacturing the same, and an absorbent article, wherein the weight per unit area of the non-woven fabric is suppressed to be low, and the form of the non-woven fabric is maintained at a high load, thereby suppressing liquid return. The breathable nonwoven fabric in which the ratio of the thickness under a load of 50 gf / cm<2> to the thickness under a load of 3.5 gf / cm<2> is 0.5-0.8, and the fiber surface area per unit volume under a load of 50 gf / cm<2> is 70-120 cm<2> / cm<3>.

Description

technical field [0001] The present invention relates to a nonwoven fabric used as a member of an absorbent article and an absorbent article using the same. Background technique [0002] Conventionally, absorbent articles such as disposable diapers generally include a top sheet that comes into direct contact with the skin to permeate excretions such as urine, an absorber that retains excretions on its back side, and a gap between these. An absorbent article of a second sheet that spreads over the entire absorbent core. In absorbent articles, excrement is held by the absorber, but when a load is applied, the excretion may flow back toward the skin side. Such a phenomenon in which the excreted liquid flows back from the absorber to the skin side is called liquid floodback, and the liquid floodback is a factor that causes a wet discomfort or skin inflammation due to moisture. Therefore, absorbent articles are required to prevent excretion held by the absorber from returning to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/44A61F13/47A61F13/15
CPCA61F13/15A61F13/47A61F2013/15463D04H1/4382D04H1/44
Inventor 青野正志松田康志小岛卓
Owner JNC CORP