Method for manufacturing synthetic leather and synthetic leather

A production method and technology for synthetic leather, applied in the field of synthetic leather, can solve the problems that leather products cannot fully meet the ecological and environmental protection requirements, the three highs, and the inability to fundamentally improve the grade of synthetic leather, so as to achieve clean production and simplify the tanning process. , the effect of good feel

Inactive Publication Date: 2011-01-12
丽水市优耐克水性树脂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, there are two problems: one is that although the synthetic leather industry has used water-based resins, due to the defects of the tanning process, it can only partially achieve environmental protection, and cannot completely solve the "three high" problems in the production process of the industry; The products cannot fully meet the ecological and environmental protection requirements, and cannot fundamentally improve the grade of synthetic leather

Method used

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  • Method for manufacturing synthetic leather and synthetic leather
  • Method for manufacturing synthetic leather and synthetic leather
  • Method for manufacturing synthetic leather and synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment is used to illustrate the synthetic leather production method provided by the present invention.

[0044] 1. Materials for leather making

[0045] 1-1 release paper

[0046] Use DE90 release paper produced by American Warren Company.

[0047] 1-2 surface layer slurry

[0048] Use UNK PUD-200 water-based polyurethane resin produced by Lishui Unek Water-based Resin Technology Co., Ltd. With 35 parts by weight of UNK PUD-200 waterborne polyurethane resin, 65 parts by weight of deionized water, 0.8 parts by weight of thickener, 0.4 parts by weight of defoamer, 0.6 parts by weight of leveling agent, 1 part by weight of external linking agent and 15 parts by weight of The water-based color paste is mixed, thickened and compounded under the agitation of a high-speed disperser, and the viscosity is adjusted to 3000cps / 20°C to become the surface layer slurry for synthetic leather.

[0049] 1-3 middle foam layer slurry

[0050] LP RSC1380 waterborne polyureth...

Embodiment 2

[0061] This embodiment is used to illustrate the synthetic leather production method provided by the present invention.

[0062] 1. Materials for leather making

[0063] The same various tanning materials as in Example 1 were used.

[0064] 2. Preparation of synthetic leather

[0065] 2-1 First put the dry DE90 release paper on the paper table, and adjust the moving speed of the release paper on the production line through the splicer. When the release paper moves to the first coating station, the surface layer slurry prepared in step 1-2 is evenly coated on the DE90 release paper with a thickness of 5 wires through the coating station. At this time, the release paper with UNK PUD-200 surface layer slurry is driven by the driver at a speed of 10 m / min and passes through the first section of medium-wave infrared oven under the irradiation of the infrared radiator. The infrared oven is 20 meters long, and there are three temperature zones from low to high at 110°C, 120°C, and...

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Abstract

The invention provides a method for preparing synthetic leather and the synthetic leather prepared by the method. The method comprises the following steps: (1) coating slurry containing surface waterborne polyurethane resin on the surface of release paper, and drying to form a finishing coat; (2) mixing and foaming the slurry containing the foaming waterborne polyurethane resin with air by using a foaming machine, and coating the foamed slurry on the surface of the finishing layer, and drying to form a medium foaming layer; and (3) adhering the surface of the foaming layer and a basic fabric by using an adhesive containing waterborne polyurethane resin, and drying. The method uses the waterborne resin foaming layer to replace the Base leather manufacturing process, avoids using toxic and harmful organic solvents, such as dimetbyl formamide (DMF), toluene and the like, solves the pollution problem in the synthetic leather industry, and realizes clean manufacture of the synthetic leather.

Description

technical field [0001] The invention relates to a production method of synthetic leather and synthetic leather prepared by the method. Background technique [0002] At present, most of the synthetic leather resins used in the synthetic leather industry at home and abroad are solvent-based polyurethane resins. The production process of artificial leather and synthetic leather is mainly divided into dry process polyurethane tanning process and wet process polyurethane tanning process. The dry polyurethane tanning process refers to the multi-layer structure formed by volatilizing the solvent in the solvent-based polyurethane resin to obtain a multi-layer film plus a base cloth, including direct coating and scraping method and release paper method. Wet polyurethane tanning process refers to the multi-layer structure with air permeability and moisture permeability and continuous porous layer obtained by the film-forming method in water after the solvent in the solvent-based poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/12B32B27/40D06N3/14
Inventor 卢子标谢镇铭
Owner 丽水市优耐克水性树脂科技有限公司
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