Method for producing emulational leather

A production method and technology for imitating leather, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of accelerated cracking and aging of resin, high temperature resistance, springback, etc., and achieve high artificial leather. grain effect, high peel strength, high tear strength effect

Active Publication Date: 2009-09-30
福建兰峰制革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The application of imitation leather in clothing, sports shoes, sofas, luggage and other fields is more and more extensive, which largely compensates for the impact of the scarcity of animal skins on related manufacturing industries, but the existing ones are mainly used for sports shoes PU synthetic leather still has deficiencies, mainly in that the semi-finished PU synthetic leather will rebound after cold pressing, so that when the PU synthetic leather roll is left fo

Method used

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Examples

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Embodiment

[0015] Embodiment discloses a kind of production method of imitation leather, comprises the steps:

[0016] 1), set the weight to 220g / m 2 The non-woven fabric passes through the impregnation tank at a linear speed of 7.5m / min. The impregnation tank is filled with an impregnating material with a viscosity of 500-700cps. The impregnating material is composed of PU resin with a weight ratio of 100:450:10: xylene Formamide: composed of yellow pigment;

[0017] 2) Immerse the non-woven fabric coming out of the impregnation tank into the pre-coagulation tank for pre-coagulation treatment. The pre-coagulation tank is filled with dimethylformamide aqueous solution and fresh water. When the non-woven fabric passes through the pre-coagulation tank, the organic solvent therein Methyl formamide will be dissolved in water, so that the PU resin can be cured;

[0018] 3) Pass the pre-solidified non-woven fabric through a coating head, and coat a layer of coating material with a viscosity ...

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PUM

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Abstract

The invention provides a method for producing emulational leather by cold pressing treatment to prepare high emulational synthetic leather, which comprises the following steps that: firstly, preparation of basic fabric: non-woven fabric passes through an impregnation groove containing PU resin, dimethylfomamide and a colorant, is subjected to pre-solidification treatment and coated with a layer of a coating material on the surface of the non-woven fabric; the nonwoven fabric passes through a coagulating tank and a rinsing bath to be subjected to solidification and water washing treatment and dried and shaped to manufacture the basic fabric; the surface of release paper is coated with a layer of a surface material containing the PU resin, dimethylfomamide and the colorant through a No.1 coating head; then a layer of a bottom material is coated on the surface material; the surface material and the bottom material are preheated and compounded with the basic fabric; the mixture is subjected to drying treatment to manufacture a semifinished product; the semifinished product is heated to the temperature of between 160 and 190 DEG C and subjected to embossing treatment through a pair of cold pressing rollers; and after the cold pressing treatment, the semifinished product is cooled and furled to manufacture a finished product.

Description

technical field [0001] The invention relates to a method for producing imitation leather, and the produced leather is used in the fields of leather shoes, leather garments, sofa products and the like. Background technique [0002] The application of imitation leather in clothing, sports shoes, sofas, luggage and other fields is more and more extensive, which largely compensates for the impact of the scarcity of animal skins on related manufacturing industries, but the existing ones are mainly used for sports shoes PU synthetic leather still has deficiencies, mainly in that the semi-finished PU synthetic leather will rebound after cold pressing, so that when the PU synthetic leather roll is left for a period of time, the surface texture gradually fades and becomes blurred. However, when the semi-finished PU synthetic leather is subjected to hot-pressing treatment, since the resin on the surface of the semi-finished PU synthetic leather is not resistant to high temperature, th...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B27/12B32B27/40B32B37/10B32B38/06D06C23/04
Inventor 黄胜伟朱巨波
Owner 福建兰峰制革有限公司
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