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Leathery sheet and method for producing the same

A manufacturing method and sheet-like technology, applied in the direction of fabrics, non-woven fabrics, textiles, and papermaking, etc., can solve the problem without finding the means, it is difficult to meet the needs of various consumers, and there is no leather-like sheet research. For example, to achieve the effect of excellent rebound feeling

Inactive Publication Date: 2009-08-19
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the inventors of the present invention conducted intensive studies on a leather-like sheet that does not substantially contain a high-molecular elastomer, and as a result, it was determined that it is difficult to obtain the same resilience as that of a leather-like sheet that contains a high-molecular elastomer. feel
This means that it is difficult to meet the needs of various consumers, and it is expected to improve
[0008] However, the current situation is that there have been almost no research examples on leather-like sheets that do not substantially contain polymer elastomers, so no means for solving such problems have been found.

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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  • Leathery sheet and method for producing the same
  • Leathery sheet and method for producing the same
  • Leathery sheet and method for producing the same

Examples

Experimental program
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Effect test

Embodiment

[0091] Hereinafter, the present invention will be described in further detail through examples. In addition, the physical property value in an Example was measured by the method mentioned below.

[0092] (1) Item payment, fiber apparent density

[0093]The content of the leather-like sheet was measured by the method described in JIS L 1096 8.4.2 (1999). In addition, the thickness of the leather-like sheet was measured with a dial thickness meter (manufactured by Ozaki Seisakusho Co., Ltd., trade name "Piikotsuku H"), and the value of the item was divided by the thickness value to obtain the apparent fiber appearance. density.

[0094] (2) Martindale abrasion test

[0095] A test piece with a diameter of 3.8 cm was taken from the leather-like sheet, and its weight was measured. According to JIS L 1096 (1999) 8.17.5.E method (Martindale method) load (12 kPa) for furniture, an abrasion resistance test was implemented using a Martindale abrasion tester. After rubbing 20,000 t...

reference example 1

[0106] A low-viscosity component composed of 100% polyethylene terephthalate with an intrinsic viscosity of 0.40 and a high-viscosity component composed of polyethylene terephthalate with an intrinsic viscosity of 0.75 are mixed at a weight compounding ratio of 50:50 Side-by-side lamination, spinning, and drawing were performed to obtain a composite fiber of 110 dtex and 24 monofilaments. The number of twists was added at 1300 T / m, and steam setting was carried out at 65°C. Using this yarn, a woven fabric (B) was produced at a weaving density of 180×90 threads / inch. The weave density of the woven fabric alone when it was relaxed using a liquid flow dyeing machine at 110°C was 250×120 threads / inch.

reference example 2

[0108] A low-viscosity component composed of 100% polyethylene terephthalate with an intrinsic viscosity of 0.40 and a high-viscosity component composed of polyethylene terephthalate with an intrinsic viscosity of 0.75 are mixed at a weight compounding ratio of 50:50 Side-by-side lamination, spinning, and stretching were performed to obtain a composite fiber of 56 decitex and 12 monofilaments. The number of twists was added at 1500 T / m, and steam setting was carried out at 65°C. Using this yarn, a woven fabric (B) was produced at a weaving density of 94×85 threads / inch. The weaving density of the woven fabric when it was individually relaxed using a liquid flow dyeing machine at 110° C. was 136×114 threads / inch.

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Abstract

A leather-like sheet substantially comprising a fiber material, wherein a short fiber non-woven fabric (A) in which superfine fibers having an average single fiber fineness of 0.0001 to 0.5 dtex and an average fiber length of 1 to 10 cm are entangled with one another and a woven or knitted fabric (B) containing composite fibers in which two or more types of polyester fibers are compounded into a side-by-side type or an eccentric core-shell type are laminated. The leather-like sheet is excellent in a feeling of repulsion.

Description

technical field [0001] The present invention relates to leather-like sheets and methods for their manufacture. Background technique [0002] Leather-like sheets such as so-called synthetic leather and artificial leather composed of microfibers and polymer elastomers have excellent characteristics that natural leather does not have, and are widely used in various applications. When producing the synthetic leather or artificial leather, generally, after impregnating the fibrous sheet with a polymeric elastomer solution such as polyurethane, the fibrous sheet is immersed in water or an aqueous solution of an organic solvent, and the polymeric elastomer is wet-processed. Solidification method (for example, Patent Document 1). [0003] However, since a large amount of polyurethane is used for strength, dimensional stability, etc., and due to the raw material cost of polyurethane, the complexity of the manufacturing process, etc., the leather-like sheet is an expensive item. In ...

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): D06N3/00D06M11/79D04H1/42D06M17/00D04H1/46D06M23/08
CPCY10T442/444Y10T442/638D06N3/0013Y10T442/3772Y10T442/689Y10T442/682Y10T442/425B32B5/26Y10T442/659Y10T428/2395Y10T442/3146Y10S428/904Y10T442/3707D04H13/005Y10T442/64Y10T442/3065D04H1/46D04H1/492D04H1/498D04H11/08D06N3/00D06M17/00D06M11/79B32B2262/0284B32B5/026B32B5/024B32B5/022
Inventor 堀口智之梶原健太郎下山悟
Owner TORAY IND INC