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Method for producing crease-free leathers

A production method and crease-free technology, applied in the production field of crease-free leather, can solve the problems of surface crease, affecting the appearance of products, wrinkles, etc., and achieve the effect of high resilience characteristics

Active Publication Date: 2010-08-04
福建兰峰制革有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] Synthetic leather is more and more widely used in clothing, sports shoes, sofas and bags, 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 There are still deficiencies in PU synthetic leather, mainly in that PU synthetic leather products will leave obvious creases or wrinkles on the surface after being bent or deformed, and cannot fully return to imitation leather when the external force is removed. The initial state, which affects the appearance of the product

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0013] The embodiment discloses a production method of non-crease leather, comprising the following steps:

[0014] 1), set the weight to 240g / m 2 The non-woven fabric passes through the impregnation tank at a linear speed of 7.5m / min. The impregnation tank is equipped with an impregnating material with a viscosity of 1000-1200cps. The impregnating material is made of PU resin with a weight ratio of 100:220:10: dimethyl Base formamide: colorant composition, described colorant can be selected one kind according to production needs or be combined by the colorant of multiple colors.

[0015] 2), pass the non-woven fabric coming out of the impregnation tank through a coating head, and coat a layer of coating material with a viscosity of 16000 to 17000 on its surface. The coating material is made of PU with a weight ratio of 100:25:2. Resin: dimethylformamide: colorant composition, the coating head is a known structure, which is used to evenly coat the coating material on the surf...

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Abstract

The invention provides a method for producing crease-free leathers which can return to original appearances without crease after the external force disappears, comprising the following steps: producing base fabrics, passing non-woven fabrics through an immersion trough at the linear speed of 7-8m / min, coating a layer of coating medium on the surfaces of the non-woven fabrics; sequentially carrying out coagulation and water processing, coating fabrics and bed charge on the surface of release paper, compounding and drying the bed charge and base fabrics after a preheating process, and finally obtaining the finished product.

Description

technical field [0001] The invention relates to a method for producing non-crease leather, and the produced leather is used in the fields of leather shoes, leather clothes, sofa products and the like. Background technique [0002] Synthetic leather is more and more widely used in clothing, sports shoes, sofas and bags, 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 There are still deficiencies in PU synthetic leather, mainly in that PU synthetic leather products will leave obvious creases or wrinkles on the surface after being bent or deformed, and cannot fully return to imitation leather when the external force is removed. The initial state, thus affecting the appearance of the product. Contents of the invention [0003] The object of the present invention is to provide a method for producing non-crease leather that can return to its original state withou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14
Inventor 黄胜伟朱巨波
Owner 福建兰峰制革有限公司
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