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Non-woven fabric and method for producing non-woven fabric

A manufacturing method and technology of non-woven fabrics, applied in the direction of textiles and papermaking, non-woven fabrics, fabric elongation, etc., can solve the problem of non-woven fabric breaking strength, non-woven fabric damage, and manufacturing speed that are difficult to reduce fluffed non-woven fabrics Slow and so on

Active Publication Date: 2013-05-01
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, both the method of producing a fluffed nonwoven fabric described in Patent Document 4 and the method of processing a napped sheet described in Patent Document 5 use sandpaper to process the nonwoven fabric, so the nonwoven fabric is subjected to a Large damage, it is difficult to reduce the drop of the nonwoven breaking strength of the raised nonwoven fabric obtained
In addition, since the method for producing a nonwoven fabric described in Patent Document 6 uses needle punching, the production speed is slow, and it is difficult to reduce the cost.
In addition, in the manufacturing method of the nonwoven fabric sheet described in Patent Document 7, since only the stretching treatment is used to fluff the nonwoven fabric, a large damage is applied to the nonwoven fabric by the stretching treatment, and it is difficult to reduce the resulting fluffed nonwoven fabric. Decrease in the strength of non-woven fabrics

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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  • Non-woven fabric and method for producing non-woven fabric
  • Non-woven fabric and method for producing non-woven fabric
  • Non-woven fabric and method for producing non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] Using a spunbonded layer made of ethylene-propylene copolymer resin with a fiber diameter of 14.7 μm, the grammage per square meter is 15 g / m 2 (Spunbond-meltblown-spunbond laminated nonwoven fabric, hereinafter also referred to as SMS) (the nonwoven fabric in this state is referred to as Comparative Example 5). Next, pass the SMS non-woven fabric through the image 3 Matching embossing steel roll 43 indicated in Figure 4 The convex roller 51 shown in is subjected to surface processing, and a two-stage treatment is performed to obtain a nonwoven fabric. The height of each convex portion 410 in the roller 41 of the matching embossing steel roller 43 used is 2.8mm, and the engagement depth between each convex portion 410 of the roller 41 and each concave portion 420 of the roller 42 is 2.7mm. In addition, the distance (gap) between the protrusions 410 adjacent to each other in the rotation axis direction was 7 mm, and the distance (gap) between the protrusions 410 adja...

Embodiment 2

[0169] Using a spun-bonded layer made of acrylic resin with a fiber diameter of 17.7 μm, the grammage per square meter is 15 g / m 2 Non-woven fabrics (spunbond-meltblown-spunbond laminated nonwoven fabrics, hereinafter also referred to as SMS). Next, this SMS nonwoven fabric was subjected to two-step treatment under the same conditions as in Example 1 to obtain a nonwoven fabric.

Embodiment 3

[0171] Using a spunbond layer made of ethylene-propylene copolymer resin with a fiber diameter of 12.9 μm, the grammage per square meter is 18 g / m 2 (Spunbond-spunbond-meltblown-spunbond laminated nonwoven fabric, hereinafter also referred to as SSMS. Softeners are mixed into the spunbond layers on both sides of the SSMS nonwoven fabric). Next, this SSMS nonwoven fabric was subjected to two-stage treatment under the same conditions as in Example 1 to obtain a nonwoven fabric.

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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PUM

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Abstract

The present invention provides a non-woven fabric (1) wherein a web comprising a long fiber (2) is fixed by a heat sealing part (3). The non-woven fabric (1) according to the invention is provided with a fiber (21) wherein the long fiber (2) is partially broken and one end (20a) thereof is exclusively fixed by the heat sealing part (3) while the free end (20b) in the other end side is thickened. In the non-woven fabric (1) according to the invention, the fiber (21) having the thickened free end (20b) shows an increase in the terminal diameter of the fiber of 15% or greater.

Description

technical field [0001] The present invention relates to nonwoven fabrics comprising long fibers. Background technique [0002] For example, in absorbent articles such as disposable diapers, spun-bonded nonwoven fabrics are often used for reasons of high breaking strength, excellent processing suitability, and economy. However, spun-bonded nonwoven fabrics have insufficient overall soft and fluffy feeling in terms of their manufacturing methods, and it is difficult to improve the skin touch (hand feel). [0003] For example, Patent Document 1 describes a nonwoven fabric in which short fibers are laminated on a spunbonded nonwoven fabric as a base material, and the laminate is subjected to needle punching to have arc-shaped fiber loops protruding from the surface. . However, if the nonwoven fabric with protruding arc-shaped fiber loops described in Patent Document 1 is used for absorbent articles such as disposable diapers, the arc-shaped fiber loops will catch on the skin, ...

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): D04H11/08D04H3/14D06C11/00
CPCD04H1/08D04H3/14D04H11/08D06C11/00D04H3/16D06C3/06
Inventor 衣笠由彦小林秀行
Owner KAO CORP
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