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Production process of layered colored crystal PU (Polyurethane) synthetic leather

A production process and technology of synthetic leather, applied in coating, textile and papermaking, polyurea/polyurethane coating, etc., can solve the problems of easy layering and hydrolysis, cracks, not fullness, etc., so as to avoid floating layer feeling and improve natural Effects for transitioning and improving the quality of color levels

Inactive Publication Date: 2018-04-13
泉州静杰企业管理咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing multi-layered crystal leather cannot be well combined between layers, and there is a feeling of floating between layers, not full, and it is easy to delaminate, hydrolyze and crack.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of production technology of layered color crystal PU synthetic leather, it comprises the following steps:

[0020] (1) Apply a layer of scraper material with a viscosity of 2200-2500cps on the surface of the release paper through the No. 1 coating head, and the coating amount is about 30-35g / ㎡; the scraper material is made of pu resin, two Composed of methyl formamide and pigment, the weight ratio is 100:60-80:1-3 pu resin: dimethyl formamide: pigment;

[0021] (2) When drying to 2-3% dry, apply a layer of middle layer scraper material with a viscosity of 3000-3500cps on the top of the scraper material through the No. 2 coating head on the release paper; the middle layer scraper material is made of pu resin , dimethylformamide, coloring material composition, its weight ratio is 100:55-70:4-6 pu resin: dimethylformamide: coloring material; surface layer scraper when drying to 2-3 dry The material is in a shrinking state. At this time, coating the middle layer scr...

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PUM

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Abstract

The invention discloses a production process of a layered colored crystal PU (Polyurethane) synthetic leather. The production process comprises the steps of coating a layer of scraper sizing agent ona surface of release paper through a No.1 coating head, coating a layer of middle-layer scraper sizing agent on an upper surface of a scraper material through a No.2 coating head, coating a layer of bottom material on an upper surface of the middle layer through a No.3 coating head, and after preheating, compounding base cloth and the bottom material, and drying to obtain a dry-process semi-finished product; secondly, sequentially coating a layer of surface layer on a surface of glossy paper through the No.1 coating head, and coating a layer of bottom layer on a surface of the surface layer through the No.2 coating head; finally, when drying to 20 to 30 percent of dryness, laminating the dry-process semi-finished product and the bottom material, and drying to obtain a finished product. When drying to 20 to 30 percent of dryness, a surface-layer scraper material is at a contraction state, and a middle-layer scraper material can permeate into contraction holes of the surface-layer scraper material, so that natural transition between layers during compounding is improved, and a floating layer feeling is avoided.

Description

technical field [0001] The invention relates to the technical field of leather, in particular to a production process of layered colored crystal PU synthetic leather. Background technique [0002] Synthetic leather is more and more widely used in clothing, sports shoes, sofas, luggage and other fields, which to a large extent makes up for the impact of the shortage of animal skin on the manufacturing industry. The multi-layer crystal leather just makes up for the single color of the crystal, giving people a multi-layered aesthetic feeling from the appearance. This can affect the aesthetics of the sports shoes. The layers of the existing multi-layered crystal leather cannot be well combined, and there is a floating feeling between the layers, which is not full, and is easy to be delaminated, hydrolyzed and cracked. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a production process of laye...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/14C09D175/04C09D7/63
CPCC08K5/42C09D175/04D06N3/0059D06N3/0077D06N3/0097D06N3/145D06N3/146D06N3/147D06N2209/083D06N2211/28
Inventor 董晓静任志杰
Owner 泉州静杰企业管理咨询有限公司
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