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Leather-like article in sheet form, and method for their production

A manufacturing method and sheet-like technology, applied to fabrics, dyeing methods, non-woven fabrics, etc., can solve problems such as cracking due to rubbing, and achieve the effects of reduced amount, excellent strength and physical properties, and a good sense of thickness

Inactive Publication Date: 2010-05-05
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the present inventors, it is considered that when the thus obtained nonwoven fabric is dyed with, for example, a liquid flow dyeing machine, cracks often occur due to rubbing action or the like.

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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  • Leather-like article in sheet form, and method for their production
  • Leather-like article in sheet form, and method for their production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] Using island-in-the-sea type composite staple fiber with single fiber fineness of 3 decitex, 36 islands, and fiber length of 51 mm, consisting of 45 parts of polystyrene as the sea component and 55 parts of polyethylene terephthalate as the island component , making a fiber web through a carding machine or a cross winder. Then pass through 1 barb type needle, at 1500 / cm 2 The weft density is processed to obtain a fiber apparent density of 0.210g / cm 3 Composite staple fiber non-woven fabric. Next, it is immersed in a 12% aqueous solution of polyvinyl alcohol (PVA1) with a degree of polymerization of 500 and a degree of saponification of 88% heated to about 95°C so that the weight of the nonwoven fabric in terms of solid content will reach 25%, while immersing in PVA, perform shrinkage treatment for 2 minutes, and dry at 100°C to remove water. The obtained sheet was treated with trichlorethylene at about 30°C until the polystyrene was completely removed to obtain ultra...

Embodiment 2

[0119] Before performing the high-speed fluid flow process, it processed similarly to Example 1 except having processed PVA1 with 95 degreeC hot water until PVA1 was completely removed. The ultrafine short fiber nonwoven fabric thus obtained was a dense sheet in which ultrafine fibers were entangled, as in Example 1. The evaluation results of its physical properties are shown in Table 1.

Embodiment 3

[0121] Using 20 parts of polystyrene as the sea component and 80 parts of polyethylene terephthalate as the island component, a single fiber fineness of 5 decitex, 25 islands, and a fiber length of 51 mm (island Except that the fineness of the components was about 0.16 dtex), it processed similarly to Example 1, and obtained the ultrafine short fiber nonwoven fabric. The ultrafine short fiber nonwoven fabric thus obtained is a dense sheet in which ultrafine fibers are entangled. The evaluation results of its physical properties are shown in Table 1.

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Abstract

The object of the invention is to provide a nonwoven fabric containing ultra-fine fibers and high molecule elastic bodies suitable as a leather-like sheet, and also a leather-like sheet with an excellent compactness. A nonwoven fabric containing ultra-fine fibers, characterized in that it contains staple fibers with a fiber fineness of 0.0001 to 0.5 decitex and a fiber length of 10 cm or less, and has a weight per unit area of 100 to 550 g / m2 , an apparent density of 0.280 to 0.700 g / cm 3, a tensile strength of 70 N / cm or more, and a tear strength of 3 to 50 N. The ultra-fine fiber nonwoven fabric is formed by complexing between the ultra-fine fibers, and dying. The leather-like sheet satisfies the following formula, the tensile strength (N / cm) >=0.45*[weight per unit area](g / m2)-40, the high molecule elastic bodies are formed by water-dispersion series high molecule elastic bodies, and the content of the high molecule elastic bodies is smaller than or equal to 10 weight percent relative to the fiber material.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of July 7, 2004, an application number of 200480020657.9, and an invention title of "ultrafine short fiber non-woven fabric and leather-like sheet and its manufacturing method". technical field [0002] In particular, the present invention relates to an ultrafine short fiber nonwoven fabric suitable for use as a base fabric of a leather-like sheet, and a method for producing the same. ultrafine short fiber non-woven fabric. [0003] Furthermore, the present invention relates to a leather-like sheet excellent in solidity that can be used for shoes, furniture, clothing, etc., and a method for producing the same. More specifically, it relates to a leather-like sheet mainly composed of a fiber material, having sufficient texture and physical properties, and a method for producing the same. Background technique [0004] Leather-like sheets made of microfibers and high-mol...

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): D06N7/06D04H1/48D06N3/00D04H1/4382D04H1/46D04H1/49D04H1/492D06P3/24D06P3/52D06P7/00
CPCD04H1/42D04H1/46D04H1/465D06N3/0004D04H1/4334D04H1/435D04H1/4382D04H1/492D04H1/4383D04H1/43838Y10T428/254Y10T428/2395Y10T442/607Y10T442/614Y10T442/636Y10T442/64Y10T442/662Y10T442/663Y10T442/666Y10T442/682Y10T442/688Y10T442/689D04H1/49
Inventor 堀口智之横井京子梶原健太郎
Owner TORAY IND INC
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