Waterborne/solvent-free mirror surface polyurethane synthesis leather preparation process

A water-based polyurethane and preparation technology, applied in the direction of synthetic resin layered products, lamination, coating, etc., can solve the problem that it is difficult to achieve the high-transparency and high-brightness mirror effect of patent leather, poor air permeability, mechanical properties and environmental protection, Glossiness and transmittance are general problems, to achieve the effect of fast UV cross-linking and curing, excellent macroscopic properties, and improving surface hardness and gloss

Inactive Publication Date: 2017-09-15
安徽宝博新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional ordinary mirror polyurethane synthetic leather is usually processed and transferred on the mirror release paper. The mirror effect is achieved by transferring the gloss of the mirror release paper. Its gloss and transparency are average, and it is difficult to achieve the high transparency of patent leather. bright mirror effect
[0003] Secondly, the appearance effect of moisture-cured mirror products is comparable to that of patent leather products, but it is prone to fogging, poor flexibility, and yellowing resistance, which makes it difficult to meet the requirements of users. high
[0004] The existing patent CN 106049077 A is a preparation method of high-gloss PET film transfer mirror-surface polyurethane synthetic leather, which only solves the problems of easy fogging, poor flexibility, and yellowing resistance, but its air permeability, mechanical properties and environmental protection Poor sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, impregnate the non-woven fabric base fabric in the water-based polyurethane solution, and the impregnation amount of the impregnation solution is 70-75% of the non-woven fabric base fabric; secondly, remove the impregnated material and drain the excess liquid, and then dry it; again One side of the dried material is uniformly coated with a layer of WPU surface layer; finally, the dried material is bonded to the TPU film through the WPU surface layer, and then thermally laminated.

[0027] The water-based polyurethane solution is composed of the following materials in parts by weight: 60.0 parts of water-based polyurethane, 20.0 parts of difunctional polyurethane acrylate polymer INV-UV818, 10.2 parts of PVA, and 0.1 part of polyether-modified polydimethylsiloxane and 0.1 part of polysiloxane compound containing hydrophobic particles, and 100 parts of water.

[0028] Among them, after drying, the material is washed with hot water, and then dried after washing with...

Embodiment 2

[0035] First, impregnate the non-woven fabric base fabric in the water-based polyurethane solution, and the impregnation amount of the impregnation solution is 71% of the non-woven fabric base fabric; secondly, remove the impregnated material and drain the excess liquid, and then dry it; One side of the dried material is uniformly coated with a layer of WPU surface layer; finally, the dried material is bonded to the TPU film through the WPU surface layer, and then thermally laminated.

[0036] The water-based polyurethane solution is composed of the following materials in parts by weight: 69.5 parts of water-based polyurethane, 29.6 parts of difunctional polyurethane acrylate polymer INV-UV818, 11.8 parts of PVA, and 0.1 part of polyether-modified polydimethylsiloxane and 0.2 parts of polysiloxane compound containing hydrophobic particles, and 100 parts of water.

[0037] Among them, after drying, the material is washed with hot water, and then dried after washing with water. ...

Embodiment 3

[0044] First, impregnate the non-woven fabric base fabric in the water-based polyurethane solution, and the impregnation amount of the impregnation solution is 70-75% of the non-woven fabric base fabric; secondly, remove the impregnated material and drain the excess liquid, and then dry it; again One side of the dried material is uniformly coated with a layer of WPU surface layer; finally, the dried material is bonded to the TPU film through the WPU surface layer, and then thermally laminated.

[0045] The water-based polyurethane solution is composed of the following materials in parts by weight: 77.7 parts of water-based polyurethane, 28.9 parts of difunctional polyurethane acrylate polymer INV-UV818, 13.3 parts of PVA, and 0.2 parts of polyether-modified polydimethylsiloxane and 0.2 parts of polysiloxane compound containing hydrophobic particles, and 130 parts of water.

[0046] Among them, after drying, the material is washed with hot water, and then dried after washing wi...

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PUM

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Abstract

The invention relates to a process for preparing water-based / solvent-free mirror-surface polyurethane synthetic leather. The steps are as follows: 1) immersing a non-woven fabric base cloth in an aqueous polyurethane solution, and the impregnation amount of the dipping solution is 70-75% of the non-woven fabric base cloth ; 2) Pull out the impregnated material to drain excess liquid, and then dry; 3) Evenly coat one layer of WPU surface layer on one side of the dried material; 4) Pass the WPU surface on the dried material Layer bonding TPU film, and heat lamination can be sterilized at high temperature. After sterilization, it is cooled with cold water in time and then vacuum-packed to make vacuum foie gras. The present invention not only solves the problems of easy fogging, poor flexibility, and intolerance to yellowing, but also improves the air permeability, mechanical properties and environmental protection performance of the product of the present invention.

Description

technical field [0001] The invention relates to the field of preparation of mirror-surface polyurethane synthetic leather, in particular to a preparation process of water-based / solvent-free mirror-surface polyurethane synthetic leather. Background technique [0002] As a classic product, mirror polyurethane synthetic leather is enduring and an indispensable element in fashion and trends. It plays an important role in all kinds of classic or popular shoes and bags. The traditional ordinary mirror polyurethane synthetic leather is usually processed and transferred on the mirror release paper. The mirror effect is achieved by transferring the gloss of the mirror release paper. Its gloss and transmittance are average, and it is difficult to achieve high transmittance of patent leather Bright mirror effect. [0003] Secondly, the appearance effect of moisture-cured mirror products is comparable to that of patent leather products, but it is prone to fogging, poor flexibility, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B32B27/04B32B27/06B32B27/12B32B27/40B32B37/06D06N3/00D06N3/14
CPCB32B5/022B32B27/12B32B27/40B32B37/06B32B2255/02B32B2260/021B32B2260/046B32B2307/724D06N3/0011D06N3/0059D06N3/0086D06N3/141D06N2209/123
Inventor 葛敬雷
Owner 安徽宝博新材料科技有限公司
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