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Hot-pressing color-changing stratified structure, hot-pressing color-changing synthetic leather and preparation method thereof

A color-changing layer and synthetic leather technology, which is applied in textiles and papermaking, can solve the problems of single color-changing effect and high cost of color-changing synthetic leather, and achieve the effect of low cost and good application prospects

Active Publication Date: 2018-05-18
广东康派环创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a thermocompression color-changing synthetic leather and its preparation method, which has solved the problem of single color-changing effect and high cost of traditional color-changing synthetic leather

Method used

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  • Hot-pressing color-changing stratified structure, hot-pressing color-changing synthetic leather and preparation method thereof
  • Hot-pressing color-changing stratified structure, hot-pressing color-changing synthetic leather and preparation method thereof
  • Hot-pressing color-changing stratified structure, hot-pressing color-changing synthetic leather and preparation method thereof

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preparation example Construction

[0042] Further, this embodiment also provides a method for preparing hot-pressed discoloration synthetic leather, comprising the following steps:

[0043] Foaming the first slurry to make a coating, drying at 70°C to 120°C to obtain a foamed layer;

[0044] Make a base color layer on the foam layer;

[0045] Make an adhesive layer on the base color layer;

[0046] The base cloth and the adhesive layer are laminated to obtain undiscolored synthetic leather;

[0047] Carrying out hot pressing to the uncolored synthetic leather to obtain hot pressed discolored synthetic leather.

[0048] In the embodiment that the heat-pressing color-changing synthetic leather includes a transparent protective layer, the transparent protective layer can be made on the release paper earlier, and then the foaming layer can be made on the transparent protective layer, or the foaming layer can be made on the release paper earlier. Layer, after the bonding of the base fabric and the adhesive layer ...

Embodiment 1

[0069] This embodiment provides a hot-press color-changing water-based synthetic leather. The base color of the synthetic leather is full-color, and the hot-pressed parts become black. The synthetic leather comprises a transparent protective layer, a foam layer, a ground color layer, an adhesive layer and a polyester cloth which are sequentially stacked, and the preparation steps are as follows:

[0070] (1) Scrape-coat a layer of the third slurry with high transparency and good wear resistance on the release paper, the thickness of the coating is 0.02mm, and dry at 70°C to obtain a transparent protective layer.

[0071] The viscosity of the third slurry is 400mpa.s. The third slurry is made of the following raw material components in parts by weight: 100 parts of DLC-F type water-based polyurethane emulsion, 1 part of N3390 type isocyanate curing agent, 2 parts of D816 type wear agent, 0.2 part of 3236 type hand feel agent, ALA type Thickener 0.5 part.

[0072] (2) Foaming ...

Embodiment 2

[0081] This embodiment provides a water-based synthetic leather that changes color by hot pressing. The synthetic leather comprises a transparent protective layer, a foam layer, a ground color layer, an adhesive layer and a cotton cloth which are sequentially stacked, and the preparation steps are as follows:

[0082] (1) Squeeze-coat a layer of the third slurry with high transparency and good wear resistance on the release paper, the thickness of the coating is 0.2mm, and dry at 120°C to obtain a transparent protective layer.

[0083] The viscosity of the third slurry is 1500mpa.s. The third slurry is made of the following raw material components in parts by weight: 100 parts of DLC-F type water-based polyurethane emulsion, 5 parts of N3390 type isocyanate curing agent, 0.2 part of D816 type wear agent, 2 parts of 3236 type hand feeling agent, ALA type Thickener 5 parts.

[0084] (2) Foaming the first slurry, foaming with mechanical agitation and foaming, the foaming densit...

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Abstract

The invention relates to a hot-pressing color-changing stratified structure, hot-pressing color-changing synthetic leather and a preparation method thereof. The hot-pressing color-changing stratifiedstructure comprises a foaming layer and a background color layer, wherein the foaming layer is arranged on the background color layer, and the hot-pressing color-changing synthetic leather comprises atransparent protective layer, a foaming layer, a background color layer, an adhesive layer and basic cloth which are successively arranged in a laminating manner. According to the hot-pressing color-changing stratified structure and the hot-pressing color-changing synthetic leather provided by the invention, before the hot pressing, the foaming layer is a gas-solid phase mixed system, due to thelight scattering effect, the foaming layer is in a non-transparent state, so that the foaming layer can effectively block the background color layer. When under the hot pressing, a hot-pressed portionof the foaming layer is compact and is changed into a single transparent solid phase, and the light scattering effect disappears, so that the color of the background color layer is displayed. The hot-pressing color-changing synthetic leather can realize an effect of changing from light color to deep color without adding a color-changing material, and can also realize an effect of changing from the deep color to the light color; and moreover, the hot-pressing color-changing stratified structure is low in cost, and good in application prospect in industries such as clothing, packaging bags, stationery and the like.

Description

technical field [0001] The invention relates to the field of thermobaric materials, in particular to a thermobaric layered structure, thermobaric synthetic leather and a preparation method thereof. Background technique [0002] With the development of fashion trends in clothing, leather bags and stationery, people's individual needs are getting higher and higher, and synthetic leather products with heat-pressing discoloration effects are very popular in the market. At present, most of the color-changing leathers in the market are coated with a color-changing resin layer on the surface of the finished synthetic leather product. When it is heated and pressed, the embossed part will change color; A discoloration effect occurs when heated or pressed. But this kind of color-changing leather is all solvent-based PU leather, and can only realize the color-changing effect of light color changing to dark color. In addition, there are photosensitive or temperature-sensitive color-ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/005D06N3/145D06N2209/0823D06N2211/28
Inventor 程福奎薛矛
Owner 广东康派环创科技有限公司
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