Nonwoven fabric having stretchability, and process for producing the same

A manufacturing method and technology of non-woven fabrics, applied in the direction of textiles and papermaking, chemical instruments and methods, non-woven fabrics, etc., can solve the problems of damaged ventilation and stretchability, and achieve the effect of fluffy softness

Active Publication Date: 2011-11-09
JNC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since the embossed and crimped part is filmed, there is a problem that ventilation is impaired and the stretchability of this part is also impaired.

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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  • Nonwoven fabric having stretchability, and process for producing the same
  • Nonwoven fabric having stretchability, and process for producing the same
  • Nonwoven fabric having stretchability, and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0140] Using a side-by-side conjugate fiber (volume ratio: 50 / 50) consisting of polypropylene with a melting point of 160°C and an ethylene-propylene copolymer with a melting point of 130°C, it is produced by the carding method with a weight per unit area of ​​10g / m 2 Fiber layer 2. The shrinkage rate of the fiber layer 2 was 70%.

[0141] Using a concentric core-sheath composite fiber (volume ratio: 50 / 50) consisting of polypropylene with a melting point of 160°C and L-LDPE with a melting point of 100°C, it is produced by the carding method with a weight per unit area of ​​10g / m 2 Fiber layer 1. The shrinkage rate of the fiber layer 1 was 5%.

[0142] The fiber layer 1 is laminated on the fiber layer 2 so that the machine direction of each fiber layer becomes the same direction, and a two-layer web is produced. On the obtained double-layer net, a diameter of 3mm is placed on a punching plate (32.6% opening rate) that is opened in a zigzag manner at intervals of 5mm, and th...

example 2

[0145] Using a side-by-side conjugate fiber (volume ratio: 50 / 50) consisting of polypropylene with a melting point of 160°C and an ethylene-propylene copolymer with a melting point of 130°C, it is produced by the carding method with a weight per unit area of ​​20g / m 2 Fiber layer 2. The shrinkage rate of the fiber layer 2 was 70%.

[0146] 10% rayon was mixed in a concentric core-sheath composite fiber (volume ratio: 40 / 60) consisting of polypropylene with a melting point of 160°C and L-LDPE with a melting point of 100°C by carding, and The weight per unit area is 10g / m 2 Fiber layer 1. The shrinkage rate of the fiber layer 1 was 0%.

[0147] The fiber layer 1 is laminated on the fiber layer 2 so that the machine direction of each fiber layer becomes the same direction, and a two-layer web is produced. In the same manner as in Example 1, point air processing was performed on the obtained double-layer web. The shrinkage ratio at this time was 5% in MD and 3% in CD.

[014...

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Abstract

The invention provides a stretchable nonwoven fabric which has concavo-convex structure on the surface, is bulky and highly flexible, has air permeability, and is capable of displaying stretchability in all directions irrespective of the directions of MD and CD. Specifically, the invention provides a stretchable nonwoven fabric, comprising a fiber layer (1) containing a heat-bondable fiber and a fiber layer (2) containing a conjugate fiber composed of resin components different from each other wherein the fiber layer (2) is laminated to at least one surface of the fiber layer (1), both fiber layers are integrated, the fibers of both fiber layers were no press-flattened at heat-bonded parts which is partly formed by heat-bonding of the heat-bondable fiber, and the fiber layer (1) forms a convex structure protruded to the fiber layer (1) side between the heat-bonded parts.

Description

technical field [0001] The invention relates to a stretchable non-woven fabric, its manufacturing method and products using the non-woven fabric. More specifically, the present invention relates to a nonwoven fabric that exhibits stretchability in all directions regardless of the machine direction (Machine Direction, MD) and the transverse direction (Cross Direction, CD). In addition, the present invention relates to a nonwoven fabric having a convex structure protruding from the surface of the nonwoven fabric and adding bulkiness, softness, and ventilation. Background technique [0002] As a method of obtaining a stretchable nonwoven fabric, an elastomer resin is generally laminated on a conveyor belt by a melt blown method, and then bonded with a hot roll to form a sheet, but since the bulkiness is very low, the air permeability is low and the Loss of feel. In addition, there is also a problem of poor surface smoothness due to friction peculiar to elastomer resins. [0...

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 Applications(China)
IPC IPC(8): B32B3/30B32B27/02B32B27/08B32B27/12B32B5/12D04H1/559
CPCD04H1/559B29C66/71B29C65/565B29C66/7294B29C66/303B32B2250/02D04H1/542B29C65/10B32B5/26B32B2305/20B29C59/18B32B2250/20B29C66/21B29C61/02B32B2262/0215B32B37/0084B29C66/73116B29C66/1122B29C66/45B29C66/73715B29C66/73921Y10T156/1043Y10T428/24322B29K2023/0633B29K2023/0625B29K2023/16B29K2023/08B29K2023/14
Inventor 寺田博和藤原寿克
Owner JNC CORP
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