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Shaped nonwoven fabric

a non-woven fabric, shaped technology, applied in the direction of non-woven fabrics, textiles and paper, bandages, etc., can solve the problems of reduced bulkiness, reduced bulkiness of non-woven fabrics, and reduced texture, so as to achieve satisfactory liquid permeability, excellent texture, and high absorption speed

Inactive Publication Date: 2019-12-19
JNC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The shaped nonwoven fabric described in the patent is bulky and has a unique texture. It has high liquid permeability and good liquid returnability, meaning it can quickly absorb liquid and has a space for liquid to move around. This makes it a desirable material for use in various applications.

Problems solved by technology

However, in this method, since the nonwoven fabric is crushed by the pin roll, there is a problem in that bulkiness of the nonwoven fabric is reduced and a texture deteriorates.
Also, since the nonwoven fabric is consolidated except for the pores, there is a problem in that a liquid does not easily pass therethrough, the bulkiness is reduced, and a liquid return is large.
However, since a portion of the shaping involves compression with the protrusion roll, there is a problem in that a liquid does not easily pass therethrough.
Also, since a shape retention property is low due to tension (a tensile force) of the nonwoven fabric, the shaped portion may break or the like during processing of disposable diapers and sanitary napkins, and thus there is a problem in that the shape retention property deteriorates.

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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  • Shaped nonwoven fabric
  • Shaped nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0075]The sample 1 is a shaped nonwoven fabric having pores and made of a single-layer nonwoven fabric processed using the shaping roller (FIG. 1). It is ascertained that the specific volume is high and it is bulky. Also, the sample 1 was highly rated in the texture evaluation by the 10 panelists, with 8 panelists rating it as having flexibility and 5 panelists rating it as having a high cushioning property.

[0076]In regard to the absorption performance, the liquid permeability due to the effect of perforation was high, and the effects in the initial liquid permeability and the repeated liquid permeability were high. Also, in the liquid return, since the shaped convex portion was bulky, the liquid return amount was small. The specific volume ratio was 5.9 / 29.2×100=20%.

example 2

[0077]The sample 2 is a shaped nonwoven fabric having pores and made of a two-layer nonwoven fabric processed using the shaping roller (FIG. 2). It is ascertained that the specific volume is high and it is bulky. Also, the sample 2 was highly rated in the texture evaluation by the 10 panelists, with 8 panelists rating it as having flexibility and 8 panelists rating it as having a high cushioning property.

[0078]In the absorption performance also, the liquid permeability due to the effect of perforation was high, and the effects in the initial liquid permeability and the repeated liquid permeability were high. Also, in the liquid return, since the shaped convex portion was bulky, the liquid return amount was small. The specific volume ratio was 4.9 / 30.6×100=16%.

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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Abstract

The purpose of the present invention is to provide a porous shaped nonwoven fabric, which has excellent texture and good liquid permeability, is bulky, and is less susceptible to liquid return. The present invention provides a shaped nonwoven fabric with sections of relatively low specific volume and sections of relatively high specific volume present in parallel lines on the surface of the nonwoven fabric, wherein the portion with a low specific volume have thermally compressed areas alternating with porous areas and the portion with a high specific volume have ridges that have not been thermally compressed.

Description

TECHNICAL FIELD[0001]The present invention relates to a shaped nonwoven fabric which is bulky and has pores, and a product using the same.BACKGROUND ART[0002]Recently, increased comfort of nonwoven fabrics used for sanitary materials such as disposable diapers and sanitary napkins has been demanded, and improvements have been progressing. Particularly, special nonwoven fabrics have come to be used for surface materials in order to reduce stuffiness due to skin rashes, urine, or menstrual blood. In order to reduce a contact area with the skin, nonwoven fabrics that have been subjected to shaping and nonwoven fabrics having pores that increase an absorption speed can be exemplified.[0003]As a conventional nonwoven fabric having pores, a nonwoven fabric in which pores are formed by perforating with a heated pin while sandwiching the nonwoven fabric between a pin roll and a protrusion roll is known (see, for example, Patent Literature 1). However, in this method, since the nonwoven fabr...

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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IPC IPC(8): D04H1/76D04H1/4391D04H1/541
CPCD04H1/541D04H1/558D04H1/76D04H1/4391A61F13/51104A61F13/51108D04H1/54D04H1/5412
Inventor TERADA, HIROKAZU
Owner JNC CORP
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