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Super fine short fiber nonwoven fabric and leather-like article in sheet form, and method for their production

A technology of fine staple fibers and a manufacturing method, which is applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of rubbing and cracking, and achieve the effects of reducing the amount of application, good thickness, and excellent strength and physical properties.

Inactive Publication Date: 2009-12-23
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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  • Super fine short fiber nonwoven fabric and leather-like article in sheet form, and method for their production
  • Super fine short fiber nonwoven fabric and leather-like article in sheet form, and method for their production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Uses sea-island composite staple fiber composed of 45 parts of polystyrene as a sea component and 55 parts of polyethylene terephthalate as an island component with a single fiber fineness of 3 dtex, 36 islands, and a fiber length of 51 mm , Make fiber web by carding machine or cross-winding machine. Then pass 1 barb type needle punch, with 1500 pieces / cm 2 The weft density is processed to obtain a fiber apparent density of 0.210g / cm 3 The composite short fiber non-woven fabric. Next, it was immersed in a 12% aqueous solution of polyvinyl alcohol (PVA1) heated to about 95°C with a degree of polymerization of 500 and a degree of saponification of 88% so that the amount of adhesion relative to the weight of the non-woven fabric in terms of solid content reached 25%, while immersing in PVA, shrinking treatment for 2 minutes and drying at 100°C to remove moisture. The obtained sheet was treated with trichloroethylene at about 30°C until the polystyrene was completely removed, a...

Embodiment 2

[0118] Before the high-speed fluid flow treatment, the PVA1 was treated with hot water at 95°C until the PVA1 was completely removed. The treatment was performed in the same manner as in Example 1, except that the PVA1 was completely removed. The ultrafine short fiber nonwoven fabric thus obtained was a dense sheet in which ultrafine fibers were entangled in the same manner as in Example 1. The evaluation results of its physical properties are shown in Table 1.

Embodiment 3

[0120] Using 20 parts of polystyrene as the sea component and 80 parts of polyethylene terephthalate as the island component, a single fiber with a fineness of 5 dtex, 25 islands, and a fiber length of 51 mm is used as an island-in-the-sea composite fiber (island). The fineness of the component was about 0.16 dtex), except that the treatment was performed in the same manner as in Example 1 to obtain an 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

An object of the present invention is to provide a nonwoven fabric of ultrafine short fibers suitable for a leather-like sheet and a leather-like sheet excellent in thickness. The present invention solves the above-mentioned problems by providing the following ultrafine short fiber unwoven fabric, that is, an ultrafine short fiber nonwoven fabric characterized in that it contains a fiber having a single fiber fineness of 0.0001 to 0.5 decitex and a fiber length of 10 cm or less. For short fibers, the mesh weight is 100-550g / m2, the fiber apparent density is 0.280-0.700g / cm3, the tensile strength is greater than or equal to 70N / cm, and the tear strength is 3-50N.

Description

Technical field [0001] The present invention particularly relates to an ultrafine short fiber nonwoven fabric suitable for use as a base fabric for a leather-like sheet, and a method for producing the same. More specifically, it relates to the ability to reduce the amount of polyurethane added in the leather-like sheet and to have excellent strength and physical properties Of ultra-fine staple fiber non-woven fabric. [0002] Furthermore, this invention relates to the leather-like sheet-like article which is excellent in thickness, which can be used for shoes, furniture, clothing, etc., and its manufacturing method. In more detail, it relates to a leather-like sheet-like article which is mainly composed of a fiber material and has sufficient hand feeling and physical properties and a method of manufacturing the same. Background technique [0003] Leather-like sheets composed of ultrafine fibers and polymer elastomers have excellent characteristics that natural leather does not ha...

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 Patents(China)
IPC IPC(8): D04H1/42D04H1/4334D04H1/435D04H1/48
Inventor 堀口智之横井京子梶原健太郎
Owner TORAY IND INC
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