Manufacturing method for glycol polyurethane suede artificial leather convenient for dyeing

A manufacturing method and technology of artificial leather, applied in textiles and papermaking, etc., can solve problems such as single color of coating, monotonous luster and color, hard hand feeling of coating coloring, etc., and achieve bright colors, small color migration and short dyeing time Effect

CN106758304AInactive Publication Date: 2017-05-31JIANGYIN HUADONG PLASTIC PROD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a manufacturing method for glycol polyurethane suede artificial leather convenient for dyeing. The manufacturing method comprises the steps of preparing a coating slurry by using glycol solvent type polyurethane resin, applying the coating slurry to the surface of suede artificial leather base cloth, and performing dyeing treatment to obtain dyed polyurethane suede artificial leather, wherein the coating slurry comprises the following components in parts by mass: 100 parts of glycol solvent type polyurethane resin, 20-120 parts of dimethylfomamide, and 20-120 parts of acetone. The glycol solvent type polyurethane resin, as an artificial leather surface coating material, can be dyed by a dye, and can obtain a color effect of dye coloring after the dyeing treatment, thereby endowing a product with the characteristics of bright color, good coating permeability, high surface color fastness and small color migration.
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Description

technical field

[0001] The invention belongs to the technical field of preparation methods of polyurethane suede artificial leather, and in particular relates to a method for manufacturing diol-based polyurethane suede artificial leather which is easy to dye. Background technique

[0002] The artificial leather with dye coloring effect on the surface is bright in color and high in transparency. It is popular in fashion products such as bags and women’s shoes. However, traditional synthetic leather is usually colored by pigment, which cannot achieve the effect of dye coloring. Although it can The manufacturing method of adding dye water coloring agent to the coating material is used to obtain the dye coloring effect, but this manufacturing method will bring serious color migration, poor color fastness, high cost and other problems, which restrict the use of the product.

[0003] In the traditional synthetic leather manufacturing process, it is necessary to add color paste, to...

Examples

Embodiment 1

[0019] The manufacturing method of glycol-based polyurethane suede artificial leather that is easy to dye is to use glycol-based solvent-based polyurethane resin to prepare a finishing slurry, and then apply the finishing slurry to the surface of the suede artificial leather base cloth. The aforementioned finishing is done by dry method of release paper In the surface making technology, the glycol solvent-based polyurethane surface layer is attached to the semi-finished suede artificial leather wet process, and then dyed polyurethane suede artificial leather is obtained through pad dyeing.

[0020] Finishing paste comprises the following components by mass:

[0021] 100 parts of glycol solvent-based polyurethane resin

[0022] Dimethylformamide 100 parts

[0023] Acetone 80 parts.

Embodiment 2

[0025] The manufacturing method of the diol-based polyurethane suede artificial leather which is easy to dye is to use the diol-based solvent-based polyurethane resin to configure the finishing slurry, and then coat the finishing slurry on the surface of the suede artificial leather base cloth. Alcohol-based solvent-based polyurethane coating slurry is applied to the surface of dry-laid semi-finished suede artificial leather, and then dyed polyurethane suede artificial leather is obtained through jigger dyeing.

[0026] Finishing paste comprises the following components by mass:

[0027] 100 parts of glycol solvent-based polyurethane resin

[0028] 80 parts of dimethylformamide

[0029] 60 parts of acetone.

Embodiment 3

[0031] The manufacturing method of the diol-based polyurethane suede artificial leather that is easy to dye is to use a diol-based solvent-based polyurethane resin to prepare a finishing slurry, and then coat the finishing slurry on the surface of the suede artificial leather base cloth. The alcohol solvent-based polyurethane coating surface layer is coated on the surface of the semi-finished suede artificial leather base cloth, and then the dyed polyurethane suede artificial leather is obtained through air-flow dyeing treatment.

[0032] Finishing paste comprises the following components by mass:

[0033] 100 parts of glycol solvent-based polyurethane resin

[0034] 80 parts of dimethylformamide

[0035] Acetone 100 parts.