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A kind of high-foaming high-stripping solvent-free shoe leather and its preparation method

A solvent-free, high-stripping technology, applied in the field of synthetic leather, can solve the problems of affecting the touch and flex resistance of synthetic leather, the synthetic leather feels hard, and the foam layer is difficult to foam, so as to achieve a green and pollution-free production process, durable Excellent flexure and improved peel strength

Active Publication Date: 2022-06-07
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the number of manufacturers producing solvent-free shoe leather is gradually increasing, but the two-component solvent-free foam layer is used as the adhesive layer in the process. In order to achieve higher peel strength, the two-component solvent-free foam layer is not foamed completely. It needs to be combined with the fabric layer, which makes it difficult for the foam layer to foam completely, which affects the touch and flex resistance of the synthetic leather, which will cause problems such as the hard hand of the synthetic leather

Method used

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  • A kind of high-foaming high-stripping solvent-free shoe leather and its preparation method
  • A kind of high-foaming high-stripping solvent-free shoe leather and its preparation method
  • A kind of high-foaming high-stripping solvent-free shoe leather and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of high-foaming and high-stripping solvent-free shoe leather, comprising the following steps:

[0035] (1) Weigh 80 parts of water-based PU, 2 parts of cross-linking agent, 0.4 parts of water-based thickener, 0.2 parts of leveling agent, and 6 parts of water-based color paste, uniformly stir to obtain water-based PU surface layer slurry, and mix the water-based PU surface layer slurry The material is coated on the release paper with a coating thickness of 0.12±0.01mm, and is dried in an oven to form a water-based PU surface layer. The temperature of the oven is divided into three temperature sections, and the temperature is 85±5℃, 95±5℃ , 105±5℃, the coating speed is controlled at 7±1m / min, and the oven length is 9m;

[0036](2) Accurately weigh 90 parts of solvent-free resin material A, 0.05 parts of catalyst, 6 parts of silicone leveling agent, 0.4 parts of moisture, 5 parts of solvent-free color paste, and 1 part of anti-sticking agent according ...

Embodiment 2

[0039] A preparation method of high-foaming and high-stripping solvent-free shoe leather, comprising the following steps:

[0040] (1) Weigh 110 parts of water-based PU, 4 parts of cross-linking agent, 0.8 parts of water-based thickener, 0.4 parts of leveling agent, and 10 parts of water-based color paste, uniformly stir to obtain water-based PU surface layer slurry, and mix the water-based PU surface layer slurry The material is coated on the release paper with a coating thickness of 0.12±0.01mm, and is dried in an oven to form a water-based PU surface layer. The temperature of the oven is divided into three temperature sections, and the temperature is 85±5℃, 95±5℃ , 105±5℃, the coating speed is controlled at 7±1m / min, and the oven length is 9m;

[0041] (2) Accurately weigh 120 parts of solvent-free resin material A, 0.07 parts of catalyst, 10 parts of silicone leveling agent, 0.6 parts of moisture, 10 parts of solvent-free color paste, and 3 parts of anti-sticking agent acc...

Embodiment 3

[0044] A preparation method of high-foaming and high-stripping solvent-free shoe leather, comprising the following steps:

[0045] (1) Weigh 95 parts of water-based PU, 3 parts of cross-linking agent, 0.6 parts of water-based thickener, 0.3 parts of leveling agent, and 8 parts of water-based color paste, uniformly stir to obtain water-based PU surface layer slurry, and mix the water-based PU surface layer slurry The material is coated on the release paper with a coating thickness of 0.12±0.01mm, and is dried in an oven to form a water-based PU surface layer. The temperature of the oven is divided into three temperature sections, and the temperature is 85±5℃, 95±5℃ , 105±5℃, the coating speed is controlled at 7±1m / min, and the oven length is 9m;

[0046] (2) Accurately weigh 105 parts of solvent-free resin material A, 0.06 parts of catalyst, 8 parts of silicone leveling agent, 0.5 parts of moisture, 7 parts of solvent-free color paste, and 2 parts of anti-sticking agent accordi...

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Abstract

The invention discloses a high-foaming and high-peeling solvent-free shoe leather and a preparation method thereof, which successively comprise a water-based PU surface layer, a two-component solvent-free foaming layer, a water-based PU adhesive layer and a fabric layer from top to bottom; the two-component The solvent-free foaming layer is composed of the following components in parts by weight: 90-120 parts of solvent-free resin material A, 140-160 parts of solvent-free resin material B, 0.05-0.07 parts of catalyst, 0.4-0.6 parts of water, silicone fluid 0.6-1.0 parts of leveling agent, 1-3 parts of anti-sticking agent, 5-10 parts of solvent-free color paste. The invention adopts a water-based process, does not add toxic and harmful organic chemical solvents, the two-component solvent-free foaming layer is fully foamed, and the water-based PU adhesive layer is rolled on the surface of the foaming layer by a reverse roller, baked to a semi-dry state, and then mixed with The fabric is thermally laminated with zero lamination, and the slurry can be immersed in the pores of the fabric. The synthetic leather produced is non-toxic and environmentally friendly, has good physical properties, and has excellent bending resistance and peel strength.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather, and particularly relates to a high-foaming and high-stripping solvent-free shoe leather and a preparation method thereof. Background technique [0002] PU leather has many excellent characteristics such as wear resistance, folding resistance, weather resistance, flexible and changeable surface patterns, and colorful patterns, and is very popular in outdoor shoes and sports shoes. However, with the increasing environmental protection requirements, the traditional shoe leather technology is challenged, and the solvent-free shoe leather technology came into being. [0003] At present, the number of manufacturers producing solvent-free shoe leather is gradually increasing, but the two-component solvent-free foam layer is used as the adhesive layer in the process. In order to achieve higher peel strength, the two-component solvent-free foam layer is not fully foamed. It needs to be combined...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/145D06N3/0097D06N3/0077D06N2209/1642D06N2209/1664D06N2209/103D06N2209/1635D06N2211/28D06N2211/106
Inventor 沈宏武赵伟栋陈绪珍程艳西刘兵李童罗运东何时川
Owner ANHUI ANLI MATERIAL TECH
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