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Method for making thin type elastic PU synthetic leather

A production method and synthetic leather technology, applied in textiles and papermaking, etc., can solve the problems of narrowing the width of the door, difficulty in guaranteeing product quality, inability to produce high-quality thin synthetic leather products, etc., and achieve the effect of improving processing performance

Active Publication Date: 2008-05-14
ZHEJIANG HEXIN NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of thin and elastic base fabric will become narrow and difficult to control after wet processing and drying, and curling and shrinkage will also occur, making it difficult to guarantee product quality
In order to reduce the phenomenon of narrowing, curling and shrinkage of the door width during processing due to the influence of tension along the conveying direction, the method of improving the synchronization of mechanical transmission and reducing tension is often used, because this production process is difficult to fundamentally eliminate The impact of tension and tension changes on product quality cannot produce high-quality thin and elastic synthetic leather products

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Base fabric: thin warp-knitted polyester fleece, thickness 0.35mm;

[0012] Woven fabric: plain polyester cotton raised fabric, thickness 0.3mm;

[0013] Binder: LH-202 acrylic acid water-soluble emulsion, concentration 18%;

[0014] Wet peel strength of composite cloth: 0.23kg / 3cm;

[0015] Dry peel strength of composite cloth: 0.66kg / 3cm;

[0016] The thickness of the synthetic leather obtained: 0.65mm;

[0017] Other qualities of the obtained synthetic leather: qualified, moderate dry and wet peeling strength of adhesion.

Embodiment 2

[0019] Base fabric: thin warp-knitted polyester fleece, thickness 0.3mm;

[0020] Woven fabric: plain polyester cotton raised fabric, thickness 0.3mm;

[0021] Binder: LH-202 acrylic acid water-soluble emulsion, concentration 15%;

[0022] Wet peel strength of composite cloth: 0.13kg / 3cm;

[0023] Dry peel strength of composite cloth: 0.54kg / 3cm;

[0024] The thickness of the synthetic leather obtained: 0.55mm;

[0025] Other qualities of the obtained synthetic leather: qualified, easy to peel off.

Embodiment 3

[0027] Base fabric: thin warp-knitted nylon raised fabric, thickness 0.27mm;

[0028] Woven fabric: plain polyester cotton raised fabric, thickness 0.3mm;

[0029] Binder: LH-202 acrylic acid water-soluble emulsion, concentration 12%;

[0030] Wet peel strength of composite cloth: 0.10kg / 3cm;

[0031] Dry peel strength of composite cloth: 0.48kg / 3cm;

[0032] The thickness of the synthetic leather obtained: 0.52mm;

[0033] Other qualities of the prepared synthetic leather: qualified, low wet peeling, easy to peel.

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 relates to a manufacturing method of thin elastic PU synthesized leather. One side of a thin elastic base cloth is attached with a layer of machine woven cloth, and the other side of the base cloth is compounded with a PU layer via wet processing of synthesized leather, then the base cloth is dried and molded, and the machine woven cloth is peeled during a coiling process; wherein, the base cloth and the machine woven cloth are fuzzed in a single surface, the fuzzed surface of the machine woven cloth is attached to the non-fuzzed surface of the base cloth by low concentration hydrophilic adhesive, and the PU layer is compounded to the fuzzed surface of the base cloth. The invention adopts the method of compounding a machine woven cloth to the rear surface of the base cloth, leads the machine woven cloth to bear the tension during the conveying process so as to prevent the thin elastic base cloth from distorting during the conveying process, thus enhancing the fabricating performance of the base cloth; the woven cloth is peeled during the coiling process, so high quality product can be obtained. The adhesive for the fuzzed surface of the machine woven cloth is attached to the non-fuzzed surface of the base cloth, and the dried adhesive is adhered and remained on the fuzzed surface of the machine woven cloth during the peeling process, which does not influence the performance of the PU synthesized leather.

Description

technical field [0001] The invention relates to a method for manufacturing thin and elastic PU synthetic leather, a method for manufacturing thin elastic leather made of elastic cloth such as thin warp knitting and knitting as a base cloth, and belongs to the field of synthetic leather production technology. Background technique [0002] PU (polyurethane) synthetic leather is made by coating polyurethane resin on the base fabric. Among them, PU synthetic leather (used for golf gloves, hemmed shoe leather, clothing leather, etc.) etc.), the thickness of the base cloth is less than 0.3mm, and the tanning process usually adopts the traditional wet process. In the wet process, the base fabric needs to have a certain tension along the conveying direction during the conveying process of unwinding, scraping, solidification, washing and drying. This type of thin, elastic base fabric will become narrow and difficult to control after wet processing and drying, and curling and shrinka...

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): D06N3/12
Inventor 李寅周志军张建风汪旗张水观顾海云王艳丽许志
Owner ZHEJIANG HEXIN NEW MATERIAL CO LTD
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