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Production method of environmentally friendly leather imitation synthetic leather

A technology of imitation leather and synthetic leather, applied in the field of synthetic leather, can solve the problems of residual toxic and harmful substances, unfavorable environmental protection and human health, and achieve the effects of improving appearance and feel, shortening the time of ion exchange equilibrium, and accelerating the reaction

Active Publication Date: 2015-12-16
ZHEJIANG JINSHANG SYNTHETIC LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of residual toxic and harmful substances in existing synthetic leather products, which is not conducive to environmental protection and human health, and to provide a synthetic leather preparation method that is not only environmentally friendly but also has an appearance and feel similar to natural leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of environment-friendly artificial leather synthetic leather, comprising the following steps:

[0035] (1) wet bass preparation

[0036] a. 10 parts by weight of dimethylformamide and 2 parts by weight of color paste (commercially available) were mixed and stirred for 30 min, then filtered;

[0037] b. 40 parts by weight of dimethylformamide, 5 parts by weight of modified bentonite and 20 parts by weight of lignocellulose were mixed and stirred for 30 minutes, and then fully swelled for 20 minutes;

[0038] c. Add the mixture filtered in step a to the swollen mixture in step b, stir evenly, then add 50 parts by weight of polyurethane resin, stir for 30 minutes, and defoam for 20 minutes;

[0039] d. Mix the degassed mixture in step c at 110g / m 2 The amount of material applied is scraped on the base cloth, and then immersed in a dimethylformamide solution with a mass fraction of 15% to solidify for 8 minutes at a solidification temperature of 30°C,...

Embodiment 2

[0051] A preparation method of environment-friendly artificial leather synthetic leather, comprising the following steps:

[0052] (1) wet bass preparation

[0053] a. 12 parts by weight of dimethylformamide and 4 parts by weight of color paste were mixed and stirred for 35 minutes, and then filtered;

[0054] b. 45 parts by weight of dimethylformamide, 10 parts by weight of modified bentonite and 25 parts by weight of lignocellulose were mixed and stirred for 35 minutes, and then fully swelled for 25 minutes;

[0055] c. Add the mixture filtered in step a to the swollen mixture in step b, stir evenly, then add 55 parts by weight of polyurethane resin, stir for 35 minutes, and defoam for 25 minutes;

[0056] d. Mix the degassed mixture in step c at 125g / m 2 The amount of material applied is scraped on the base cloth, and then immersed in a dimethylformamide solution with a mass fraction of 16% to solidify for 9 minutes at a solidification temperature of 35°C, and then washed...

Embodiment 3

[0068] A preparation method of environment-friendly artificial leather synthetic leather, comprising the following steps:

[0069] (1) wet bass preparation

[0070] a. 15 parts by weight of dimethylformamide and 5 parts by weight of color paste were mixed and stirred for 40 minutes, and then filtered;

[0071] b. 50 parts by weight of dimethylformamide, 20 parts by weight of modified bentonite and 30 parts by weight of lignocellulose were mixed and stirred for 40 minutes, and then fully swelled for 30 minutes;

[0072] c. Add the mixture filtered in step a to the swollen mixture in step b, stir evenly, then add 60 parts by weight of polyurethane resin, stir for 40 minutes, and defoam for 20 to 30 minutes;

[0073] d. Mix the degassed mixture in step c at 125g / m 2 The amount of material applied is scraped on the base cloth, and then immersed in a dimethylformamide solution with a mass fraction of 17% to solidify for 10 minutes at a solidification temperature of 45°C, and then...

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PUM

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Abstract

The invention discloses a production method of environmentally friendly leather imitation synthetic leather in order to solve the problems of residual toxic and harmful substances in present synthetic leather products, and harmfulness for environmental protection and the health of human bodies. The production method of the environmentally friendly leather imitation synthetic leather synthetic leather comprises the steps of wet base production, dry dosing, dry surface lamination and post-treatment, bentonite is modified by benzyltrimethylammonium chloride, the obtained modified bentonite is used as a filler for producing a wet base, and the modified bentonite can effectively adsorb harmful substances in the synthetic leather products, so the synthetic leather produced through adopting the method is safe and environmentally-friendly. The produced synthetic leather is post-treated by adopting a delustering agent, so the appearance and the hand feeling of the synthetic leather are improved, and the soft luster and the natural leather-like hand feeling are given to the synthetic leather.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to a preparation method of an environment-friendly artificial leather synthetic leather. Background technique [0002] Synthetic leather is a plastic product that simulates the composition and structure of natural leather and can be used as its substitute material. Usually, the impregnated non-woven fabric is used as the mesh layer, and the microporous polyurethane layer is used as the grain layer. Both the front and back are very similar to leather, and have a certain degree of air permeability, which is closer to natural leather than ordinary artificial leather. Synthetic leather occupies a very important position in human's daily life and is widely used in the production of luggage, clothing, footwear and car interior accessories. [0003] In the existing synthetic leather manufacturing, the polyurethane resin is diluted and added with wood powder or other filling materials, an...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00C08L75/04C08K9/04C08K3/34D06M15/564D06M11/79D06M101/38
Inventor 田树松杨毅
Owner ZHEJIANG JINSHANG SYNTHETIC LEATHER
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