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Preparation method of high-gloss PET film transfer mirror-surface polyurethane synthetic leather

A polyurethane and synthetic leather technology, applied in textiles and papermaking, etc., can solve the problems of difficult to achieve high-transparency and high-brightness mirror effect of patent leather, poor flexibility, fogging, etc., and achieve strong production operability and resistance to bending Excellent flexibility and good permeability

Active Publication Date: 2016-10-26
ANHUI ANLI MATERIAL TECH
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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
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (a) Pass the wet-type polyurethane synthetic leather through a post-treatment calender, iron it at a temperature of 140°C, cool it, and make a wet-type polyurethane synthetic leather semi-finished product;

[0034] (b) Use the high-gloss PET mirror film as the release film, uniformly coat a layer of surface layer polyurethane slurry with a thickness of 14 filaments on the front to form the surface layer, and dry the surface layer PET film at 110°C; the surface layer The viscosity of the layer polyurethane slurry is 1800cps / 25°C; it is made of the following components by weight:

[0035] Polyether-polyester copolymer polyurethane resin 100 parts

[0036] 70 parts of dimethylformamide

[0037] Pigment 10 parts

[0038] Leveling agent 0.5 parts.

[0039] (c) Uniformly coat a layer of adhesive layer polyurethane slurry with a thickness of 13 filaments on the surface layer of the surface layer PET film to form an adhesive layer, and dry it to obtain a high-gloss PET film;...

Embodiment 2

[0047] (a) Pass the wet-type polyurethane synthetic leather through a post-treatment calender, iron it at a temperature of 120°C, and cool it to obtain a wet-type polyurethane synthetic leather semi-finished product;

[0048] (b) Use the high-gloss PET mirror film as the release film, uniformly coat a layer of surface layer polyurethane slurry with a thickness of 12 filaments on the front surface to form a surface layer, and dry the surface layer PET film at 100°C; the surface layer The viscosity of the layer polyurethane slurry is 1200cps / 25°C; it is made of the following components by weight:

[0049] Polyether-polyester copolymer polyurethane resin 100 parts

[0050] 80 parts of dimethylformamide

[0051] Pigment 25 parts

[0052] Leveling agent 1.0 parts.

[0053] (c) Uniformly coat a layer of adhesive layer polyurethane slurry with a thickness of 15 filaments on the surface layer of the surface layer PET film to form an adhesive layer, and dry it to obtain a high-gloss...

Embodiment 3

[0061] (a) Pass the wet-type polyurethane synthetic leather through a post-treatment calender, iron it at a temperature of 130°C, cool it, and make a wet-type polyurethane synthetic leather semi-finished product;

[0062] (b) Use high-gloss PET mirror film as a release film, uniformly coat a layer of surface layer polyurethane slurry with a thickness of 13 filaments on the front to form a surface layer, and dry at 105°C to obtain a surface layer PET film; the surface layer The viscosity of the layer polyurethane slurry is 1500cps / 25°C; it is made of the following components by weight:

[0063] Polyether-polyester copolymer polyurethane resin 100 parts

[0064] 75 parts of dimethylformamide

[0065] Pigment 20 parts

[0066] Leveling agent 0.8 part.

[0067] (c) Uniformly coat a layer of adhesive layer polyurethane slurry with a thickness of 14 filaments on the surface layer of the surface layer PET film to form an adhesive layer, and dry it to obtain a high-gloss PET film; ...

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Abstract

The invention provides a preparation method of high-gloss PET film transfer mirror-surface polyurethane synthetic leather. The preparation method comprises the following steps: firstly ironing wet polyurethane synthetic leather by a post-treatment calender at a temperature of 120-140 DEG C, and cooling to obtain a wet polyurethane synthetic leather semi-finished product; using a high-gloss PET mirror-surface film as a release film, and uniformly coating the front surface of the high-gloss PET mirror-surface film with a layer of polyurethane slurry to form a surface layer, and drying to obtain a high-gloss PET film; and finally heat-conglutinating a bonding layer of the high-gloss PET film and the front surface of the wet polyurethane synthetic leather semi-finished product, drying, cooling, and stripping the high-gloss PET mirror-surface film so as to obtain the high-gloss PET mirror-surface polyurethane synthetic leather. The mirror-surface effect of the leather is similar to the mirror-surface effect of patent leather. In addition, the leather provided by the invention has high gloss, high transparency, high flex resistance, resistance to yellowing and fogging resistance.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather, more specifically to a preparation method of a high-gloss PET film-transferred 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. 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 i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14C08L75/08C08L75/06
CPCC08L75/06C08L75/08D06N3/0061D06N3/0065D06N3/0077D06N3/145D06N2211/28C08L83/12
Inventor 张玉萍迟红梅程艳西阮仁祥阚道俊
Owner ANHUI ANLI MATERIAL TECH
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