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Prepn of superfine fiber sofa leatherette

A technology of ultra-fine fiber and sofa leather is applied in the field of preparation of ultra-fine fiber sofa leather, which can solve the problems that polyurethane artificial leather is inferior to natural leather in terms of hygroscopicity and moisture permeability.

Inactive Publication Date: 2003-02-26
龙口市欣鑫超纤皮革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the moisture absorption and moisture permeability of polyurethane artificial leather are not as good as natural leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Choose 0.01dtex ultra-fine fiber non-woven fabric as the base fabric, after one side is smoothed, the other side is roughened, dyed, and softened, and then the surface is made of release paper, and the product can be obtained after kneading.

[0046] Above-mentioned release paper making face comprises the steps:

[0047] 1. Press 150g / m on the general release paper 2 Carry out epidermis coating, coating composition is as follows: (all are parts by weight)

[0048] Polyether polyurethane resin A, molecular weight 150,000-160,000, 25 parts

[0049] Polyester polyurethane resin B, molecular weight 160,000-170,000, 75 parts

[0050] 18 parts of dimethylformamide (DMF)

[0051] Butanone 22 parts

[0052] Color paste 18 parts

[0053] It is then dried at a temperature of 115°C.

[0054] 2. Press 130g / m on the above coating layer 2 Carry out middle layer coating, coating material component is as follows: (all are parts by weight)

[0055] Polyether polyurethane resin A...

Embodiment 2

[0074] The polyether polyurethane resin A, polyester polyurethane resin B, polyester polyurethane resin C, and polyester polyurethane resin D used in this example are all products of Qingdao Xinyutian Chemical Co., Ltd. Embodiment 2. As described in embodiment 1, the difference is,

[0075] The fineness of the microfiber non-woven fabric is 0.08dtex.

[0076] The formulation of the coating material in the step 1 of the release paper making surface is as follows:

[0077] Polyether polyurethane resin A, molecular weight 150,000-160,000, 28 parts

[0078] Polyester polyurethane resin B, molecular weight 160,000-170,000, 75 parts

[0079] 20 parts of dimethylformamide (DMF)

[0080] Butanone 24 parts

[0081] The formula in step 2 of making noodles with release paper is as follows:

[0082] Polyether polyurethane resin A, molecular weight 150,000-160,000, 25 parts

[0083] Polyester polyurethane resin C, molecular weight 150,000-160,000, 75 parts

[0084] 40 parts of dimet...

Embodiment 4

[0116] The performance indicators of the product are very good. Embodiment 4: As described in Embodiment 1, the difference is that,

[0117] The formulation of the coating material in the step 1 of the release paper making surface is as follows:

[0118] Polyether polyurethane resin A, molecular weight 150,000-160,000, 32 parts

[0119] Polyester polyurethane resin B, molecular weight 160,000-170,000, 68 parts

[0120] 23 parts of dimethylformamide (DMF)

[0121] Butanone 25 parts

[0122] Color paste 20 parts

[0123] The formula in step 2 of making noodles with release paper is as follows:

[0124] Polyether polyurethane resin A, molecular weight 150,000-160,000, 28 parts

[0125] Polyester polyurethane resin C, molecular weight 150,000-160,000, 69 parts

[0126]38 parts of dimethylformamide (DMF)

[0127] Color paste 20 parts

[0128] The formula in step 3 of making noodles with release paper is as follows:

[0129] Polyester polyurethane resin D, molecular weight...

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PUM

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Abstract

The present invention belongs to the field of leather-making technology. By selecting superfine fiber non-woven fabric as base cloth, and through polishing, gigging, dyeing, softening, strippable paper molding and post tanning, the leather product is obtained. The strippable paper molding includes the surface layer spreading, the middle layer spreading, the adhered layer spreading, extruding to adhere the adhesive layer to the base cloth, stoving and stripping. The said process can make sofa leatherette with high resistance to acid, alkali, chemicals, light, wear and hydrolysis and high color fastness.

Description

(1) Technical field [0001] The invention relates to a method for preparing imitation leather artificial leather, in particular to a method for preparing superfine fiber sofa leather. (2) Background technology [0002] In the field of leather technology, there are natural leather and artificial synthetic leather. "Genuine leather" is a common word in the leather products market. It is a customary name for natural leather to distinguish synthetic leather; Genuine leather is, in fact, leather, which is primarily processed from mammalian hides. There are many kinds of leather, various varieties, different structures, different qualities, and the prices are quite different. Therefore, genuine leather is not only a general term for all natural leather, but also an ambiguous mark in the commodity market. [0003] According to its type, natural leather mainly includes pig leather, cow leather, sheep leather, horse leather, donkey leather and kangaroo leather, and a small amount o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00
Inventor 栾仁科栾殿明栾殿献隋信好栾积森
Owner 龙口市欣鑫超纤皮革有限公司
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