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Fur tanning process without salt and acid

A fur and tanning technology, applied in small raw hides/large raw hides/leather/fur treatment, leather degreasing, small raw hides/large raw hides/leather hides/fur chemical treatment, etc. High production costs, to achieve good social benefits, protect the environment, and reduce the amount of use

Inactive Publication Date: 2011-01-19
桐乡市鑫诺皮草有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, in the current fur production, a large amount of salt and acid will be used, the production cost is high, the production cycle is long, the efficiency is low, and the sewage treatment is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] As shown in Figure 1, the salt-free and acid-free nitration process for fur described in this embodiment includes: soaking in water: the water temperature is normal temperature, adding penetrating agent in water, controlling its content to be 0.5-1.5g / L, soaking in water for 1-4 Change the water after an hour; re-immerse water: the water temperature is normal temperature, add penetrant in the water at a content of 0.5-1.5g / L, add a degreasing agent at a content of 0.5-2g / L, and add a fungicide at a content of 0.2-1g / L , after soaking for 8-16 hours, remove the remaining meat on the fur; softening: soak the fur in water with a water temperature of 30-35°C, the water contains 5-12 units / L of neutral enzymes, and the soaking time is 5 -10 hours; tanning: add modified glutaraldehyde with normal temperature water, control its content to 3-10g / L, add amine alum after soaking for 2-12 hours, control its content to 2-15g / L, soak for 3- After 5 hours, add basic chromium sulfate,...

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PUM

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Abstract

The invention relates to a fur tanning process without salt and acid, which comprises the following steps: soaking: adding a penetrating agent to the water at normal temperature; re-soaking: adding the penetrating agent, a degreasing agent and a bactericide to the water at normal temperature, and removing residual meat on the fur after soaking; softening: the water temperature is 30-35 DEG C and the water contains neutral enzyme; and tanning: adding modified glutaraldehyde to the water at normal temperature, then adding aluminum ammonium sulfate after soaking, after a period of time, adding basic chromium sulfate, and then carrying out regular wet finishing and dry finishing after soaking. In the tanning process, the consumption of neutral salt is greatly reduced, the production cost is reduced, the generation of tanning waste water is reduced, the cost of treating the waste water is reduced, and the environment is protected. In addition, the process omits a general pickling procedure, greatly shortens the tanning time, improves the production efficiency and does not affect the quality of the tanned fur.

Description

technical field [0001] The invention relates to the fur production industry, in particular to a salt-free and acid-free nitration process for fur. Background technique [0002] The neutral salt involved in fur production is mainly table salt (sodium chloride), followed by sodium sulfate. A large amount of salt is used in the current fur production process, see Table 1 for details. [0003] Table 1 Current conventional neutral salt usage table for 1 ton of fur technology [0004] salt process Raw leather anticorrosion soaking softening pickling tanned Water consumption (liter) 0 20000 10000 20000 Salt process parameters 20% of tare weight 15g / L 60g / L 50g / L Salt consumption (Kg) 200 300 1200 1000 [0005] Considering the neutral salt produced by dyeing salt and tanning agent, for example, processing 1 ton of raw hide requires 2.0-3.0 tons of neutral salt. The neutral...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/08C14C1/04C14C3/02C14C5/00C12S7/00
Inventor 董荣华张建国
Owner 桐乡市鑫诺皮草有限公司
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