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Cracked heavy resin embossed leather color changing method

An embossing and resin technology, which is applied in the field of cracked heavy resin embossed leather color change, can solve the problems of unfriendly to the environment and human body, uneven color of leather blanks, performance discounts such as hand feeling, etc., and achieve good fading effect, environment and human body Friendly, hand feeling and other properties maintain a good effect

Active Publication Date: 2020-02-07
漳州香洲皮革有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. For cracked leather, heavy resin leather, and embossed leather, the degree of fading is relatively low, and the color of the leather after dyeing is uneven, and the handle and other properties are greatly reduced;
[0007] 2. After the color change treatment of cracked leather, heavy resin leather and embossed leather, the fiber structure of leather products will be damaged to a certain extent, and the physical and mechanical performance indicators of leather products will be greatly reduced compared with those before color change. ;
[0008] 3. Chemical raw materials such as processors used in the process steps are not friendly to the environment and human body, resulting in secondary pollution;
[0009] 4. The process steps are complicated and inconvenient to operate, resulting in high cost, which is not conducive to popularization and application

Method used

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  • Cracked heavy resin embossed leather color changing method
  • Cracked heavy resin embossed leather color changing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for changing the color of cracked heavy resin embossed leather, comprising the following steps:

[0038] S1. Use the stock leather as the leather base, add the leather base into the drum, and add 135-165% water into the drum according to the mass percentage of the leather base, control the water temperature at 48-52°C, and rotate for 25-35 minutes Back drain;

[0039] S2, according to the mass percentage of leather base, add 95~105% water, 2.5~3.5% ethylene glycol ether, 0.46~0.56% degreasing agent, 0.45~0.55% baking soda in the drum, control The water temperature is 48-52°C, continue to rotate for 110-130 minutes before draining;

[0040] S3, then wash the leather base processed in step S2 once, and drain;

[0041] S4, according to the mass percentage of leather base, add 95~105% water, 2.5~3.5% ethylene glycol ether, 0.46~0.56% degreasing agent, 0.45~0.55% baking soda in the drum, control The water temperature is 48-52°C, and the liquid is discharged after...

Embodiment 2

[0061] A method for changing the color of cracked heavy resin embossed leather, comprising the following steps:

[0062] S1, use the stock leather as the leather base, add the leather base into the drum, and add 135% water into the drum according to the mass percentage of the leather base, control the water temperature to 52°C, and drain the liquid after rotating for 25 minutes;

[0063] S2. Add 95% of water, 2.5% of ethylene glycol ether, 0.46% of degreaser, and 0.45% of sodium bicarbonate into the drum according to the mass percentage of the leather base, control the water temperature to 52°C, and continue to rotate for 110 min Back drain;

[0064] S3, then wash the leather base processed in step S2 once, and drain;

[0065] S4. According to the mass percentage of the leather base, add 95% water, 2.5% ethylene glycol ether, 0.46% degreaser, and 0.45% baking soda into the drum, control the water temperature to 52°C, and rotate for 82 minutes drainage;

[0066] S5, then per...

Embodiment 3

[0075] A method for changing the color of cracked heavy resin embossed leather, comprising the following steps:

[0076] S1, use the stock leather as the leather base, add the leather base into the drum, and add 165% water into the drum according to the mass percentage of the leather base, control the water temperature to 48°C, and drain the liquid after rotating for 35 minutes;

[0077] S2. Add 105% water, 3.5% ethylene glycol ethyl ether, 0.56% degreasing agent, and 0.55% baking soda to the drum according to the mass percentage of the leather base, control the water temperature to 48°C, and continue to rotate for 130 minutes Back drain;

[0078] S3, then wash the leather base processed in step S2 once, and drain;

[0079] S4. According to the mass percentage of the leather base, add 105% water, 3.5% ethylene glycol ether, 0.56% degreaser, and 0.55% baking soda into the drum, control the water temperature to 48°C, and rotate for 98 minutes drainage;

[0080] S5, then perfo...

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PUM

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Abstract

The invention discloses a cracked heavy resin embossed leather color changing method and the method comprises the following steps: S1, adding a leather blank into a rotary drum, adding water into therotary drum, controlling the water temperature to be 48-52 DEG C, rotating for 25-35 minutes, and discharging liquid; s2, adding water, ethylene glycol monoethyl ether, a degreasing agent and baking soda into the rotary drum, controlling the water temperature to be 48-52 DEG C, continuously rotating for 110-130 minutes, and discharging liquid; s3, performing primary water washing and liquid discharging; s4, adding the water, the ethylene glycol monoethyl ether, the degreasing agent and the baking soda into the rotary drum, controlling the water temperature to be 48-52 DEG C, rotating for 82-98minutes, and discharging liquid; and S5, performing secondary water washing and liquid discharging. The color changing method disclosed by the invention has a good fading effect on cracked leather, heavy resin leather and embossed leather, and the leather blank dyed again is uniform and full in color, good in bending resistance, soft in hand feeling, good in elasticity and high in quality, and ishardly influenced compared with the leather blank before color changing.

Description

technical field [0001] The invention relates to the technical field of leather treatment, in particular to a method for changing the color of cracked heavy resin embossed leather. Background technique [0002] Generally, large-scale leather production companies (manufacturers) will have a lot of special products, such as cracked leather, heavy resin leather, embossed leather and other leather in stock. These leathers can be reused after treatment to maximize economic benefits. [0003] In order to eliminate stockpiles, to be resilient to changes in the market or to recycle substandard products, dyed blanks must be reprocessed and returned to the market. And the primary problem that occurs at this time is exactly the need to carry out good decolorization treatment to the semi-finished leather blank. The previous fading process was rarely adopted by tannery enterprises due to defects such as high cost, complicated operation, and great impact on the quality of finished leather...

Claims

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Application Information

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IPC IPC(8): C14C9/02C14C5/00C14C1/08C14C1/04C14B7/02C14C15/00
CPCC14C1/04C14C1/08C14C15/00C14C5/00C14C9/02C14B7/02
Inventor 雷丙南林汉彬陈启明杨俊昇
Owner 漳州香洲皮革有限公司
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