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Leather-like sheet and production method thereof

A kind of swatch and leather technology, applied in the field of napped leather swatches, the preparation of the above-mentioned leather swatches, can solve the problems of soft hand feeling and structural changes, etc., and achieve excellent stretchability and drape, good appearance, shape stability and shape Excellent recovery effect

Inactive Publication Date: 2005-04-27
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this nonwoven fabric does not contain elastic fibers, its structure changes when it is repeatedly stretched and deformed.
In addition, since the impregnated polyurethane resin exists in the state of a foam sheet inside the nonwoven fabric, it is impossible to obtain an artificial leather with a soft hand and excellent hand and drapability.

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 sheet and production method thereof
  • Leather-like sheet and production method thereof
  • Leather-like sheet and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Poly-3-methyl-1,5-pentane adipate glycol, 4,4'-diphenylmethane diisocyanate, polyethylene glycol and 1,4-butanediol with an average molecular weight of 2000, by The isocyanate was melt-polymerized with 43% nitrogen to obtain a polyester-based polyurethane. Melt viscosity 5000 poise. 50 parts of the above-mentioned polyester-based polyurethane powder (island component elastic polymer) and 50 parts of low-density polyethylene powder (sea component) having a dry moisture content of 50 ppm or less were melt-kneaded with a screw kneader at 230°C to obtain Sea-island type hybrid spun fibers with a melt spinning fineness of 14 dtex having polyurethane on a part of the surface (A 0 ). In addition, 50 parts of nylon-6 powder (island component inelastic polymer) and 50 parts of polyethylene powder (sea component) were melt-kneaded with a screw kneader, and then melt-spun at 280°C to obtain sea islands with a fineness of 10 dtex. Type blended spinning fiber (B 0 ). fiber (A ...

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Abstract

The purpose of this invention is to provide a leather-like sheet having structure which substantially sustains repeated extensional deformations without causing permanent change of its original structure, excellent in elastic stretchability, having soft and dense feel and excellent in appearance without impairing its drapeability. The leather-like sheet of the present invention comprises an entangled nonwoven fabric which is made of a mixture comprising fibers of an elastic polymer and microfine fibers of an inelastic polymer having an average single fiber fineness of 0.1 dtex or less, wherein the fibers of the elastic polymer are partially porous and are partially fuse-bonded to each other.

Description

technical field [0001] The present invention relates to a leather swatch excellent in stretchability. In more detail, the present invention relates to a leather sample that does not undergo substantial structural deformation even if it is repeatedly stretched and deformed, that is, has excellent stretchability, shape retention, shape stability, and shape recovery, and has a soft and solid hand, particularly It is a quilted leather sample with good appearance, excellent hand, stretchability and drapability. In addition, the present invention also relates to a method for preparing the above-mentioned leather sample. Background technique [0002] Appearance expressed by the length of the formed bristles, the fineness of the texture, etc., due to the fibrous fabrics such as knitted fabrics, non-woven fabrics, or a fibrous substrate having a foamed structure of an elastic polymer inside at least one side with bristles formed. , feel and touch are similar to suede or nubuck leat...

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): D06N7/02D04H1/42D04H1/48D04H1/54D06N3/00
CPCD04H1/42D04H1/54D06N3/0004D04H1/48D04H1/4382Y10T442/20D04H1/43835D04H1/43838D04H1/4383D06N7/00
Inventor 吉本伸一芦田哲哉米田久夫
Owner KURARAY CO LTD
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