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Micro-fiber environment-friendly water-base synthetic leather and preparation method thereof

A synthetic leather and water-based technology, applied in the field of synthetic leather, can solve problems such as hazards, and achieve the effects of good air permeability and environmental protection in the production process.

Inactive Publication Date: 2013-06-12
浙江元新实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing synthetic leathers are made of solvent-based polyurethane, which contains a large amount of organic solvents, which is quite harmful to the human body and the environment during the production process, so in some developed countries National solvent-based synthetic leather has been gradually banned

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] At the same time, in a typical implementation of the present invention, a method for preparing the above-mentioned ultra-fiber environment-friendly water-based synthetic leather includes the following steps: production of non-woven fabrics; wet blanking, impregnating the non-woven fabrics in the bottom layer of the bottom layer In the slurry, prepare the bottom blank; dry veneer, apply and scrape the surface layer slurry on the carrier surface to form a surface layer, apply and scrape the second middle layer slurry to form a second middle layer, and apply and scrape the first middle layer slurry Form the first intermediate layer, and apply and scrape the adhesive layer slurry to form the adhesive layer and generate the surface layer; attach one side of the adhesive layer in the surface layer to the bottom blank, dry, cool, and form the glass to form a microfiber ring to resist Burning synthetic leather. This preparation method is simple and easy to implement, and the or...

Embodiment 1

[0050] raw material:

[0051] Non-woven fabric: produced by Zhejiang Keyi Synthetic Leather Company.

[0052] Bottom layer slurry: modulus 25kg / cm 2 , with a molecular weight of 0.5×10 5 The fifth aqueous polyurethane resin 80g, water 70g.

[0053] Surface layer slurry: modulus 65kg / cm 2 , molecular weight 0.7×10 5 The fourth aqueous polyurethane resin 80g, water 40g;

[0054] The second middle layer slurry: the modulus is 55kg / cm 2 , with a molecular weight of 0.6×10 5 The third aqueous polyurethane resin 80g, water 30g;

[0055] The first intermediate layer slurry: the modulus is 55kg / cm 2 , with a molecular weight of 0.6×10 5The second aqueous polyurethane resin 80g, water 30g;

[0056] Tie layer slurry; modulus 25kg / cm 2 , with a molecular weight of 0.5×10 5 The first aqueous polyurethane resin 80g, water 20g.

[0057] Preparation:

[0058] Production of non-woven fabrics;

[0059] Wet method blank making, stirring the fifth water-based polyurethane resin at...

Embodiment 2

[0067] Non-woven fabric: produced by Zhejiang Keyi Synthetic Leather Company.

[0068] Bottom layer slurry: modulus 35kg / cm 2 , with a molecular weight of 0.6×10 5 The fifth water-based polyurethane resin 100g, water 80g, water-based leveling agent 2g, water-based defoamer 2g.

[0069] Surface layer slurry: modulus 75kg / cm 2 , molecular weight 0.8×10 5 The fourth water-based polyurethane resin 100g, water 30g, water-based leveling agent 2g, water-based thickener 1g, water-based defoamer 1g;

[0070] The second middle layer slurry: the modulus is 65kg / cm 2 , molecular weight 0.7×10 5 The third water-based polyurethane resin 100g, water 20g, water-based leveling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;

[0071] The first intermediate layer slurry: the modulus is 65kg / cm 2 , molecular weight 0.7×10 5 The second water-based polyurethane resin 100g, water 20g, water-based leveling agent 1g, water-based thickener 1.5g, water-based defoamer 1.5g;

[0...

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Abstract

The invention discloses micro-fiber environment-friendly water-base synthetic leather and a preparation method thereof. The synthetic leather comprises a micro-fiber non-woven fabric, a bottom layer and a surface layer, wherein the bottom layer is coated on the micro-fiber non-woven fabric; the surface layer is coated on the bottom layer; the surface layer comprises at least four layers of coatings; the coatings are coated with sizing agents; and the sizing agents contain waterborne polyurethane, water and waterborne auxiliaries. Instead of solvent-base polyurethane resins, the waterborne polyurethane resins are adopted in the synthetic leather, so that the prepared synthetic leather is environment-friendly and is harmless to human body. Besides, the synthetic leather is excellent in moisture penetrability and air penetrability and feels like real leather, but is better than natural real leather in the aspects of tearing strength, durability, low-temperature resistance, flexibility, mildew resistance and the like. The grade of a product is greatly promoted.

Description

technical field [0001] The invention relates to the field of synthetic leather, in particular to a superfiber environment-friendly water-based synthetic leather and a preparation method thereof. Background technique [0002] With the development of society and the improvement of human living standards, the requirements for consumer goods are getting higher and higher, and natural leather is one of the hot consumer goods. Due to the constraints of natural conditions and the increasing awareness of animal protection in countries around the world, natural leather is decreasing year by year. In order to replace this natural leather, synthetic leather was invented. [0003] At present, the total domestic demand for synthetic leather reaches 800 million m 2 / Every year, the demand for high-performance, high-environmental protection, and high-quality synthetic leather reaches 200 million m 2 / yearly, with a continuous upward trend. With the development of synthetic leather, con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14B32B27/40B32B27/18B32B37/06B32B37/10C09D175/04C09J175/04C09J7/02
Inventor 葛玉君
Owner 浙江元新实业有限公司