Cracking-resistant polyurethane synthetic leather and preparation method thereof

A polyurethane and synthetic leather technology, applied in the field of synthetic leather, can solve the problems of easy detachment of yarn, failure to maintain structure, cracking of synthetic leather, etc., and achieve the effect of not easy to detach, increase bonding strength, and improve the ability to resist external forces

Inactive Publication Date: 2020-10-02
KUSN ACHILLES ARTIFICIAL LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When synthetic leather is used to produce synthetic leather products, it is necessary to punch holes or cut the synthetic leather material into the required size or style, and when punching or cutting samples, the yarn of the base fabric is easy to pull off, making the synthetic leather produce Cracked, unable to maintain structure

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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  • Cracking-resistant polyurethane synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of anti-split polyurethane synthetic leather, comprising base cloth, polyurethane adhesive layer and polyurethane surface layer;

[0028] The base fabric is a warp knitted fabric, such as figure 1 As shown, the warp-knitted fabric is woven with warp-lining yarn 1, weft-lining yarn 2, diagonal lining yarn 3 and loop-forming yarn 4, and warp-lining yarn 1, weft-lining yarn 2, diagonal lining yarn 3 and loop-forming yarn 4 are all used Polyester yarn, in which the loop-forming yarn 4 is woven into a flat weave. During the knitting process of the loop-forming yarn, the lining warp yarn 1 is inserted along the warp direction of the fabric in a straight state, and the weft yarn 2 is parallel to the weft direction of the fabric. Stretching state interlining, oblique interlining yarn 3 parallel to the oblique direction of the fabric and interlining in a straight state, interlining warp yarn 1, weft inlay yarn 2, oblique interlining yarn 3 do not form loops, loop forming ...

Embodiment 2

[0032] A kind of anti-split polyurethane synthetic leather, comprising base cloth, polyurethane adhesive layer and polyurethane surface layer;

[0033] The base fabric is a warp-knitted fabric, which is woven with warp-lining yarn, weft-lining yarn, diagonal lining yarn and loop-forming yarn, and the warp-lining yarn, weft lining yarn, diagonal lining yarn and loop-forming yarn are all made of polyester yarn , where the loop-forming yarn is woven into a flat weave. During the knitting process of the loop-forming yarn, the interlining warp yarn is inserted along the warp direction of the fabric in a straightened state, and the weft-inlaid yarn is inserted in a parallel and straightened state along the weft direction of the fabric. , the oblique interlining yarn is inserted parallel to the oblique direction of the fabric and in a straight state. The interlining warp yarn, weft interlining yarn, and oblique interlining yarn do not form loops, and the loop-forming yarns are woven i...

Embodiment 3

[0037] A kind of anti-split polyurethane synthetic leather, comprising base cloth, polyurethane adhesive layer and polyurethane surface layer;

[0038] The base fabric is a warp-knitted fabric, which is woven with warp-lining yarn, weft-lining yarn, diagonal lining yarn and loop-forming yarn, and the warp-lining yarn, weft lining yarn, diagonal lining yarn and loop-forming yarn are all made of polyester yarn , in which the loop-forming yarn is woven into a warp fabric. During the loop-forming yarn weaving process, the interlining warp yarn is inserted along the warp direction of the fabric in a straightened state, and the weft-inlaid yarn is inserted in a parallel and straightened state along the weft direction of the fabric. , the oblique interlining yarn is inserted parallel to the oblique direction of the fabric and in a straight state. The interlining warp yarn, weft interlining yarn, and oblique interlining yarn do not form loops, and the loop-forming yarns are woven into ...

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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Abstract

The invention discloses cracking-resistant polyurethane synthetic leather which comprises base cloth, a polyurethane bonding layer and a polyurethane surface layer. The base cloth is warp knitting fabric. The warp knitting fabric is formed by weaving lining warp, lining weft, oblique lining yarn and stitching threads, wherein the stitching threads are woven into a warp woven structure. In the weaving process of the stitching threads, the lining warp is lined into the fabric in the warp-direction in parallel, the lining weft is lined into the fabric in the weft-direction in parallel, the oblique lining yarn is lined into the fabric in the oblique direction in parallel, the stitching threads are woven into circles, and the lining warp, the lining weft and the oblique lining yarn are bound; the base cloth is treated with a mixed solution forming by a polyurethane solution and a silane coupling agent; and preparation raw materials of the polyurethane surface layer comprise, by mass, 100 parts of polyurethane resin, 45-65 parts of DMF, 10-20 parts of filler, 2-5 parts of heat-resisting stabilizer, 1-2 parts of defoamer, 1-3 parts of flatting agent, and 0-3 parts of surface active agent.The synthetic leather is high in strength and is not prone to cracking when being punched or cut, and the structure retentivity is good.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and in particular relates to a crack-resistant polyurethane synthetic leather and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather is a kind of polymer material with special properties. It has the appearance, feel and mechanical properties similar to natural leather. It is currently the most popular and mainstream product in synthetic leather. [0003] Synthetic leather is generally composed of a base cloth and a resin layer, and the base cloth is generally woven or knitted. When synthetic leather is used to produce synthetic leather products, it is necessary to punch holes or cut the synthetic leather material into the required size or style, and when punching or cutting samples, the yarn of the base fabric is easy to pull off, making the synthetic leather produce Cracked, unable to maintain structure. Therefore, the strength of the existing ...

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): D06N3/14D06N3/00
CPCD06N3/0009D06N3/0061D06N3/0063D06N3/0077D06N3/0097D06N3/14D06N2209/103D06N2211/28
Inventor 赵建明徐青徐雪明朱继元张世浩张广清
Owner KUSN ACHILLES ARTIFICIAL LEATHER
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