Hotpressed or embossed artificial leather and preparation method thereof

Abstract

The invention relates to hotpressed or embossed artificial leather, which comprises a surface layer, a foaming layer and a base cloth layer in sequential arrangement, wherein the surface layer is a polyurethane surface layer; the polyurethane surface layer is prepared from the following preparation raw materials in parts by weight: 95 to 105 parts of polyurethane resin, 0.1 to 0.3 part of flattingagents, 15 parts of antiaging agents, 1 to 10 parts of coloring agents and 100 parts of compound organic solvents. The invention also relates to a preparation method of the hotpressed or embossed artificial leather. The hotpressed or embossed artificial leather has the advantage that the hand feeling and the exquisite feeling of the leather after the stamping are improved.

Description

technical field

[0001] The invention relates to artificial leather technology, in particular to a kind of suction pattern or embossed artificial leather and its preparation method. Background technique

[0002] Leather materials have a wide range of uses, not only for clothing production, but also as high-end traditional materials for home decoration and the manufacture of bags, etc. After years of development, China's leather manufacturing industry has become a large exporter with complete categories, various varieties and high quality. Embossing (embossing) technology is used to emboss beautiful three-dimensional patterns on the surface of the leather. This kind of embossed leather has rich and colorful appearance patterns. It is a fashionable leather that can be used to make shoes, bags and decorations.

[0003] The existing embossed artificial leather (embossed artificial leather) generally uses PVC polyvinyl chloride as the substrate, and is prepared by subsequent abso...

Examples

preparation example Construction

[0013] A method for preparing the above-mentioned imitation-absorbing or embossed artificial leather, including the preparation of a polyurethane surface layer, the preparation method of the polyurethane surface layer is: mixing the raw materials for the preparation of the polyurethane surface layer in the above-mentioned artificial leather according to parts by weight to obtain Polyurethane surface layer slurry, and then apply the polyurethane surface layer slurry on the release paper, and dry it at 105-115°C to obtain a polyurethane surface layer, and then perform embossing or embossing on the obtained polyurethane surface layer Texture treatment, the temperature of the embossing or embossing treatment is 160-180° C. to obtain the embossing or embossing artificial leather.

[0014] As can be seen from the foregoing description, the beneficial effects of the present invention are:

[0015] The above-mentioned surface layer is designed with polyurethane resin as the main raw m...

Embodiment 1

[0027] The preparation method of the suction pattern or embossed artificial leather of the present embodiment comprises the following steps:

[0028] Step (1): Select the PU dual-purpose paper suitable for the product, evenly coat the polyurethane surface layer slurry with a viscosity of 1200-1500CPS on the release paper, and coat the polyurethane surface layer slurry with a thickness of 10-15 silk. Proportion by weight is specifically:

[0029] Polyurethane resin (dy-8080) 100 parts;

[0030] Dimethylformamide: acetone: 3:3:4 mixed solvent: 100 parts;

[0031] Leveling agent 0.1-0.3 parts;

[0032] Anti-aging agent 15 parts; and

[0033] 1-10 parts of coloring agent.

[0034] Note: 1. The amount of solvent in the coloring mixture is different, and the viscosity is different between 1200-1500CPS. The higher the viscosity, the higher the solid content of the slurry.

[0035] 2. The polyurethane resin used is suitable for absorbing / embossing processing. The basic characteri...

Embodiment 2

[0057] In the preparation method of imbibed or embossed artificial leather in this embodiment, only the thickness of the polyurethane surface layer and the specific proportion of the preparation raw materials are different, and the others are the same as in the first embodiment.

[0058] The polyurethane surface layer includes the following preparation raw materials in parts by weight: 95 parts of polyurethane resin, 0.1 part of leveling agent, 13 parts of anti-aging agent, 1 part of coloring agent and composite organic solvent, and the composite organic solvent is dimethyl formaldehyde Amide, acetone and methyl ethyl ketone are mixed solvents according to the ratio of 3:3:3.5. The amount of composite organic solvent added is: by adding the composite organic solvent until the viscosity of the polyurethane surface layer is adjusted to 1200CPS. The thickness of the polyurethane surface layer is 10 filaments.

technical field

[0001] The invention relates to artificial leather technology, in particular to a kind of suction pattern or embossed artificial leather and its preparation method. Background technique

[0002] Leather materials have a wide range of uses, not only for clothing production, but also as high-end traditional materials for home decoration and the manufacture of bags, etc. After years of development, China's leather manufacturing industry has become a large exporter with complete categories, various varieties and high quality. Embossing (embossing) technology is used to emboss beautiful three-dimensional patterns on the surface of the leather. This kind of embossed leather has rich and colorful appearance patterns. It is a fashionable leather that can be used to make shoes, bags and decorations.

[0003] The existing embossed artificial leather (embossed artificial leather) generally uses PVC polyvinyl chloride as the substrate, and is prepared by subsequent abso...

Examples

preparation example Construction

[0013] A method for preparing the above-mentioned imitation-absorbing or embossed artificial leather, including the preparation of a polyurethane surface layer, the preparation method of the polyurethane surface layer is: mixing the raw materials for the preparation of the polyurethane surface layer in the above-mentioned artificial leather according to parts by weight to obtain Polyurethane surface layer slurry, and then apply the polyurethane surface layer slurry on the release paper, and dry it at 105-115°C to obtain a polyurethane surface layer, and then perform embossing or embossing on the obtained polyurethane surface layer Texture treatment, the temperature of the embossing or embossing treatment is 160-180° C. to obtain the embossing or embossing artificial leather.

[0014] As can be seen from the foregoing description, the beneficial effects of the present invention are:

[0015] The above-mentioned surface layer is designed with polyurethane resin as the main raw m...

Embodiment 1

[0027] The preparation method of the suction pattern or embossed artificial leather of the present embodiment comprises the following steps:

[0028] Step (1): Select the PU dual-purpose paper suitable for the product, evenly coat the polyurethane surface layer slurry with a viscosity of 1200-1500CPS on the release paper, and coat the polyurethane surface layer slurry with a thickness of 10-15 silk. Proportion by weight is specifically:

[0029] Polyurethane resin (dy-8080) 100 parts;

[0030] Dimethylformamide: acetone: 3:3:4 mixed solvent: 100 parts;

[0031] Leveling agent 0.1-0.3 parts;

[0032] Anti-aging agent 15 parts; and

[0033] 1-10 parts of coloring agent.

[0034] Note: 1. The amount of solvent in the coloring mixture is different, and the viscosity is different between 1200-1500CPS. The higher the viscosity, the higher the solid content of the slurry.

[0035] 2. The polyurethane resin used is suitable for absorbing / embossing processing. The basic characteri...

Embodiment 2

[0057] In the preparation method of imbibed or embossed artificial leather in this embodiment, only the thickness of the polyurethane surface layer and the specific proportion of the preparation raw materials are different, and the others are the same as in the first embodiment.

[0058] The polyurethane surface layer includes the following preparation raw materials in parts by weight: 95 parts of polyurethane resin, 0.1 part of leveling agent, 13 parts of anti-aging agent, 1 part of coloring agent and composite organic solvent, and the composite organic solvent is dimethyl formaldehyde Amide, acetone and methyl ethyl ketone are mixed solvents according to the ratio of 3:3:3.5. The amount of composite organic solvent added is: by adding the composite organic solvent until the viscosity of the polyurethane surface layer is adjusted to 1200CPS. The thickness of the polyurethane surface layer is 10 filaments.