Nonwoven fabric

A non-woven, weight per unit area technology, applied in non-woven fabrics, textiles and papermaking, etc., can solve problems such as not easy penetration

Active Publication Date: 2009-05-27
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the thermally fused region is thinned, it is less likely that prescribed liquids such as excrement will permeate downward quickly.

Method used

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no. 1 approach

[0055] A first embodiment of the nonwoven fabric of the present invention will be described with reference to FIGS. 1 to 5 .

[0056] The nonwoven fabric 110 of this embodiment is a nonwoven fabric that can be formed by spraying a fluid mainly composed of gas onto the fiber web 100 that is a fiber aggregate. And, it is a convex shape in which a plurality of low basis weight portions formed along the longitudinal direction (LD) as the first direction and a plurality of high basis weight portions formed along the groove portion 1 are formed. Part 2 of the non-woven fabric. In addition, the fiber basis weight of the groove portion 1 is adjusted to be smaller than the fiber basis weight of the convex portion 2 .

[0057] 1-1. Shape

[0058] As shown in FIG. 2(A), FIG. 2(B) and FIG. 3, the nonwoven fabric 110 of this embodiment is a nonwoven fabric in which a plurality of grooves 1 are formed side by side at approximately equal intervals on one side of the nonwoven fabric 110. s...

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Abstract

A non-woven fabric that is provided with uneven surface and has at least its fiber basis weight regulated; and a process for producing the non-woven fabric. Non-woven fabric (110) produced in substantially sheetlike form with given thickness, the non-woven fabric (110) having its fiber basis weight regulated by blowing a fluid composed mainly of a gas onto fiber web (100) with a fiber-to-fiber freedom, is provided with multiple groove portions (1) with low basis weight and, continuously disposed along the groove portions (1), multiple convex portions (2) with high basis weight arranged adjacent to the multiple groove portions (1), respectively, wherein the fiber basis weight of the multiple groove portions (1) is smaller than that of the multiple convex portions (2).

Description

technical field [0001] The present invention relates to nonwoven fabrics. Background technique [0002] Currently, nonwoven fabrics are widely used in sanitary products such as disposable diapers and sanitary napkins, cleaning products such as wiping devices, and medical products such as face masks. In this way, although nonwoven fabrics are used in various fields, when they are actually used in products in various fields, they need to be manufactured with properties and structures suitable for the use of each product. [0003] In the production of nonwoven fabrics, for example, a dry method or a wet method is used to form a fiber layer (fibrous web), and fibers in the fiber layer are bonded by a chemical bonding method or a thermal bonding method. There is also a method of applying physical force to the fiber layer from the outside, such as repeatedly piercing the fiber layer with a plurality of needles, or spraying water, in the step of bonding fibers for forming the fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/72D04H1/54D04H1/492D04H1/74
Inventor 野田祐树石川秀行水谷聪木村明宽
Owner UNI CHARM CORP
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