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Production method of low-shrinkage low-hardening leather special for automobiles

A production method and low-shrinkage technology, applied in leather surface treatment, special leather manufacturing, small raw leather/big raw leather/leather/fur treatment, etc., can solve the problem of poor resistance to shrinkage and hardening of leather, and easy creases during wearing and use , Unable to meet the use quality and supporting conditions of seat leather, etc., to achieve the effect of not being easy to crease and strong resistance to twists and turns

Inactive Publication Date: 2015-12-02
HAINING SENDE LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Leather is a material commonly used in automobiles. The appearance, touch, and safety of automobiles will change after exposure experiments or daily long-term use. The existing leather has poor resistance to shrinkage and hardening. Easy creases in the middle cannot meet the long-term stable use quality and supporting conditions of seat leather by international brand car companies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: The present invention provides a production method of low-shrinkage and low-stiffening automotive leather, which includes: preparing leather material, requiring a uniform thickness of 1.4-1.6 mm, full filling of the leather body, and softness with a slightly super fiber feel. Primer process: take 100 parts by mass of water, heat to 10-25 degrees Celsius, add 5-15 parts by mass of cationic wax, stir for 1~2 minutes, then add 40-60 parts by mass of cationic acrylic resin, stir for 1~2 minutes , It is fully dissolved; spread the leather on the conveyor belt of the spraying machine, the conveyor speed of the conveyor belt is 0.8~1.2 meters per second, the amount of paint is 15~20g / square foot, the length of the coating is 20 meters, the transmission speed is 0.05~ Bake in an oven at 0.15 meters per second and a baking temperature of 80 to 100 degrees Celsius. Repeat the spraying twice. Hot-rolling process: Put the sprayed leather in the primer coating process at r...

Embodiment 2

[0014] Example 2: The present invention provides a method for producing special leather for automobiles with low shrinkage and low stiffness, which includes: preparing the leather material, requiring a cut thickness of 1.5 mm, full filling of the leather body, and softness with a slightly super fiber feel. Primer coating process: Take 100 parts by mass of water, heat to 10-25 degrees Celsius, add 8 parts by mass of cationic wax, stir for 1~2 minutes, then add 52 parts by mass of cationic acrylic resin, stir for 1~2 minutes, and it will be fully dissolved ; Spread the leather on the conveyor belt of the spraying machine. The conveyor speed of the conveyor belt is 0.9 meters per second, and the amount of paint is 20g / square foot. After coating, the length is 20 meters, the transmission speed is 0.08 meters per second, and the baking temperature is 100 degrees Celsius. Bake in the oven, repeat the above spraying 2 times. Hot-rolling process: Put the sprayed leather material in the...

Embodiment 3

[0015] Example 3: The present invention provides a method for producing special leather for automobiles with low shrinkage and low stiffness, which includes: preparing leather material, requiring a uniform thickness of 1.6 mm, full filling of the leather body, and softness with a slightly super fiber feel. Primer coating process: Take 100 parts by mass of water, heat to 10-25 degrees Celsius, add 10 parts by mass of cationic wax agent, stir for 2 minutes, then add 50 parts by mass of cationic acrylic resin, stir for 2 minutes, it will be fully dissolved; Spread flat on the conveyor belt of the spraying machine. The conveyor belt has a conveying speed of 1 meter per second, and the amount of paint is 18g / square foot. After coating, it passes through a length of 20 meters, a conveying speed of 0.1 meter per second, and a baking temperature of 100 degrees Celsius. , Repeat the above spraying twice. Hot-rolling process: Put the sprayed leather material in the primer coating process...

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Abstract

The invention relates to the technical field of leather production, and particularly relates to a production method of low-shrinkage low-hardening leather special for automobiles. The method comprises the steps of taking soft leather to be subjected to first coat, tumbling ironing, floating coat, top coat, lustring and milling drum sequentially to obtain the low-shrinkage low-hardening leather special for the automobiles, wherein in the first coat step, a cationic wax agent and acrylic resin are dissolved into water for spraying treatment; in the tumbling ironing step, a tumbling mill is used for the tumbling ironing; in the floating coat step, leather adhesive resin is dissolved into water for spraying treatment; in the top coat step, acrylic resin isn, acrylic resin JS, leather cracking resin and leather pigment are dissolved into water for spraying treatment. According to the finished leather obtained by adopting the production method provided by the invention, after exposure and aging, the leather is stable in size, the shrinkage rate is low, soft hand feel is retained, has the characteristic of no obvious hardening, so that the performances of an automobile in multi aspects, such as appearance, sense of touch, safety are basically guaranteed to be retained after an exposure test or being used on a daily basis for a long time.

Description

Technical field [0001] The invention relates to the technical field of leather production, in particular to a method for producing special leather for automobiles with low shrinkage and low stiffness. Background technique [0002] Leather is a commonly used material in automobiles. The appearance, touch, safety and other properties of automobiles will change after exposure experiments or long-term daily use. The existing leather has poor resistance to shrinkage and hardening, and it is difficult to wear and use. The medium easy to crease cannot meet the long-term stable use quality and supporting conditions of the seat leather of the international brand automobile company. Summary of the invention [0003] The invention provides a production method of low-shrinkage and low-hardening special leather for automobiles. Because it uses multiple different coatings for coating and layer-by-layer protection, the produced leather has excellent shrinkage and hardening resistance. [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C11/00C14C13/00
Inventor 宋洪斌赵佳祝妙凤宋保国王铁刚俞海明唐志海沈忠英陈建生
Owner HAINING SENDE LEATHER
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