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A finishing process for improving the light resistance level of leather

A leather and craftsmanship technology, applied in the field of leather processing, can solve the problems of low strength, unstable color and coating, and short service life, so as to reduce the emission of harmful substances, improve the utilization rate of chemical materials, and improve light resistance performance effect

Active Publication Date: 2021-10-01
隆丰革乐美时尚有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing sheep clothing leather production technology is that the strength is not high. Because the fiber of sheep skin itself is small, and the clothing leather finishing needs to have the characteristics of thin, light and soft, various factors make the wear resistance and tear resistance not meet the requirements.
For light-colored and colored leather, the domestic light resistance level standard is 3.5, but some foreign brand customers require it to reach 4.0. Unstable colors and coatings, short service life, and stricter restrictions on other safety regulations have forced the industry to continuously improve existing technologies. However, in recent years, only synthetic leather has light-resistant related technologies. research, but there are few related literatures in the field of leather

Method used

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  • A finishing process for improving the light resistance level of leather
  • A finishing process for improving the light resistance level of leather
  • A finishing process for improving the light resistance level of leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0182] 1. Roller coating material

[0183]

[0184]

[0185] Mix the above materials evenly, the strip speed of the roller coater is 7.0, the roller speed is 7.5, the roller coater is ready for the chemical material, spread the lamb skin on the strip flatly, pass through the roller coater and dry at 90°C, Let stand for 4 hours.

[0186] 2. Spray bottom slurry

[0187]

[0188] Mix the above materials evenly, spray twice with a spray machine, 8 guns, 15 grids, pump pressure 1.0, drying temperature 90°C, and then 110°C, 20kg, 9m / min, pass through the ironing machine for ironing.

[0189] 3. Spray the middle layer slurry

[0190]

[0191] Mix the above materials evenly, spray 3 times with a shotcrete machine, 8 guns and 14 grids, pump pressure 1.0, and drying temperature 90°C.

[0192] 4. Spray surface layer slurry

[0193]

[0194] Mix the above materials evenly, spray twice with a spray machine, 8 guns, 10 grids, pump pressure 1.0, drying temperature 90°C, an...

Embodiment 2

[0205] 1. Roller coating material

[0206]

[0207] Mix the above materials evenly, the strip speed of the roller coater is 7.0, the roller speed is 7.5, the roller coater is ready for the chemical material, spread the lamb skin on the strip flatly, pass through the roller coater and dry at 90°C, Let stand for 4 hours.

[0208] 2. Spray bottom slurry

[0209]

[0210]

[0211] Mix the above materials evenly, spray twice with a spray machine, 8 guns, 15 grids, pump pressure 1.0, drying temperature 90°C, and then 110°C, 20kg, 9m / min, pass through the ironing machine for ironing.

[0212] 3. Spray the middle layer slurry

[0213]

[0214] Mix the above materials evenly, spray 3 times with a shotcrete machine, 8 guns and 14 grids, pump pressure 1.0, and drying temperature 90°C.

[0215] 4. Spray surface layer slurry

[0216]

[0217] Mix the above materials evenly, spray twice with a spray machine, 8 guns, 10 grids, pump pressure 1.0, drying temperature 90°C, an...

Embodiment 3

[0226] 1. Roller coating material

[0227]

[0228] Mix the above materials evenly, the strip speed of the roller coater is 7.0, the roller speed is 7.5, the roller coater is ready for the chemical material, spread the lamb skin on the strip flatly, pass through the roller coater and dry at 90°C, Let stand for 4 hours.

[0229] 2. Spray bottom slurry

[0230]

[0231] Mix the above materials evenly, spray twice with a spray machine, 8 guns, 15 grids, pump pressure 1.0, drying temperature 90°C, and then 110°C, 20kg, 9m / min, pass through the ironing machine for ironing.

[0232] 3. Spray the middle layer slurry

[0233]

[0234] Mix the above materials evenly, spray 3 times with a shotcrete machine, 8 guns and 14 grids, pump pressure 1.0, and drying temperature 90°C.

[0235] 4. Spray surface layer slurry

[0236]

[0237]

[0238] Mix the above materials evenly, spray twice with a spray machine, 8 guns, 10 grids, pump pressure 1.0, drying temperature 90°C, an...

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Abstract

The invention provides a primer slurry for leather finishing process, which comprises 80-120 parts by weight of polyacrylic resin, 180-220 parts by weight of repairing ointment, and 70-90 parts by weight of covering Comprehensive resin, 40-60 parts by weight of light-resistant polyurethane resin, 50-70 parts by weight of Stahl 2000 series pigment paste, 20-30 parts by weight of penetrating agent and 450-550 parts by weight of water. The invention also provides a leather finishing process. The invention provides a variety of slurries including the bottom sizing with specific formula, combined with the corresponding finishing process, not only can improve the light resistance performance of leather, but also the mechanical properties meet the requirements of high standards, and at the same time, the process is simple and easy Operation, the dye is fully absorbed, reducing the discharge of harmful substances, improving the utilization rate of chemical materials, saving chemical materials, and reducing the discharge of three wastes.

Description

technical field [0001] The invention belongs to the technical field of leather treatment and processing, and relates to a bottom layer slurry used in a leather finishing process, a middle layer slurry used in a leather finishing process and a leather finishing process, in particular to a leather finishing process. A bottom layer size for the process, an intermediate layer size for the leather finishing process and a finishing process for improving the light resistance level of the leather. Background technique [0002] Leather processing has a history of thousands of years. After a long period of development, tanning has developed from a simple manual operation to an important industrial technology field. Since the early 1980s, my country's leather industry has developed by leaps and bounds, and it has become one of the most important leather and leather product production centers in the world. my country's cowhide, pigskin, sheepskin and other resources rank first in the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D175/04C09D201/00C09D7/65C09D7/63C09D101/18C09D191/06C14C11/00
CPCC08L2205/025C08L2205/03C08L2205/035C09D5/002C09D101/18C09D133/04C09D175/04C14C11/00C14C11/003C09D7/63C09D7/65C08L75/04C08L101/00C08L89/00C08L91/06
Inventor 查姣张长兴杨翼李海林李新建冯献青李晓楠
Owner 隆丰革乐美时尚有限公司