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Double-face leather integrated dyeing technology for lambskin

A technology of lambskin and fur leather, which is applied in the field of integrated dyeing technology of lambskin and fur leather, can solve problems such as environmental pollution, reduce production costs, improve product benefits, and solve the effects of easy dew

Active Publication Date: 2017-03-22
宁夏成丰农业科技开发股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the prior art, chrome tanning agents are usually used to tan lamb skins and process them into finished products. The processed finished products have the advantages of high temperature resistance, good thermal stability, fullness and softness of the leather body, but the chrome tanned finished leather has the advantages of certain Under the influence of certain conditions, a small amount of trivalent chromium will be converted into hexavalent chromium, which is a serious carcinogen, and the chrome tanning process will also cause serious pollution to the environment. Therefore, the development of clean and environmentally friendly chromium-free technologies and products has important practical significance

Method used

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  • Double-face leather integrated dyeing technology for lambskin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Material: Goat lamb leather

[0042] The integral dyeing process of lamb wool leather includes the following steps:

[0043] S1: Leather selection: choose lambskin boards with no damage to raw hides as raw materials for wool leather;

[0044] S2: Soaking in water: mix the leather raw material with water at a ratio of 1:10 at room temperature, add 0.3g / L fresh-recovering agent and soak for 24 hours;

[0045] S3: Meat removal: use a meat remover to remove the meat and oil on the leather board after soaking in water;

[0046] S4: Degreasing: Adding 3-5 g / L degreasing agent to degreasing for 1-2 hours at a temperature of 45°C-50°C at a ratio of 1:20 to the fur raw material after fleshing treatment and water;

[0047] S5: Pickling and softening: Add 3-5ml / L formic acid and 3-4ml / L sulfuric acid to the degreased wool leather raw material and water at a ratio of 1:20 at a temperature of 35°C-40°C , 40-60g / L salt, 1-2g / L fur softener for pickling and softening for 48-60h;

...

Embodiment 2

[0068] Raw material: Tan lamb leather

[0069] The integral dyeing process of lamb wool leather includes the following steps:

[0070] S1: Leather selection: choose lambskin boards with no damage to raw hides as raw materials for wool leather;

[0071] S2: Soaking in water: mix the leather raw material with water at a ratio of 1:10 at room temperature, add 0.3g / L fresh-recovering agent and soak for 24 hours;

[0072] S3: Meat removal: use a meat remover to remove the meat and oil on the leather board after soaking in water;

[0073] S4: Degreasing: Adding 3-5 g / L degreasing agent to degreasing for 1-2 hours at a temperature of 45°C-50°C at a ratio of 1:20 to the fur raw material after fleshing treatment and water;

[0074] S5: Pickling and softening: Add 3-5ml / L formic acid and 3-4ml / L sulfuric acid to the degreased wool leather raw material and water at a ratio of 1:20 at a temperature of 35°C-40°C , 40-60g / L salt, 1-2g / L fur softener for pickling and softening for 48-60h;...

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Abstract

The invention relates to the technical field of processing of animal fur, in particular to a double-face leather integrated dyeing technology for lambskin. The double-face leather integrated dyeing technology for the lambskin comprises the following steps of selecting skin, dipping the skin in water, removing meat, conducting degreasing, conducting acid maceration, conducting deacidification, stretching the skin, conducting secondary degreasing, conducting pickling, conducting primary tanning, conducting moisture regaining shaving softness, conducting buffing, dipping the skin in water again, conducting retanning, conducting wet buffing, conducting washing and drying, conducting sanding to achieve raising, conducting dry cleaning, dyeing fur, conducting neutralization, conducting board dyeing and fat liquoring, conducting moisture regaining and softening, conducting stretching and inspecting and accepting finished products. According to the double-face leather integrated dyeing technology for the lambskin, lambskin double-face leather raw materials are selected for the double-face leather integrated dyeing process, tanning and dyeing treatment are conducted on fleece and leather boards in a segmented manner, the temperature, the time, the addition of auxiliaries and the like are controlled to be in the best range, and the phenomena that the lambskin is prone to show green and fur is prone to remain are avoided; and besides, in the tanning process, ammonium alum and zirconium are used for primary tanning, then the technological process of low-chromium-content retanning is conducted, in this way, the softness of the lambskin as the double-face leather is greatly improved, and the thickness of the leather board is greatly improved.

Description

[0001] Technical field: [0002] The invention relates to the technical field of animal fur processing, in particular to an integral dyeing process of lamb fur. [0003] Background technique: [0004] Lambskin is the fur of lambs extracted from lambs. It can be used as carpets, heat preservation products, and lambskin accessories. With the development of society and the continuous improvement of people's living standards, people's clothing is always trendy. Products made of lambskin are mostly exported to Europe, America and Asia, and are highly praised by customers. At present, in the prior art, chrome tanning agents are usually used to tan lamb skins and process them into finished products. The processed finished products have the advantages of high temperature resistance, good thermal stability, fullness and softness of the leather body, but the chrome tanned finished leather has the advantages of certain Under the influence of certain conditions, a small amount of trivalen...

Claims

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Application Information

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IPC IPC(8): C14C1/00C14C1/08C14C3/28C14C3/30
CPCC14C1/00C14C1/08C14C3/28C14C3/30
Inventor 丁生国杨丽娟
Owner 宁夏成丰农业科技开发股份有限公司
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