Method for tanning Tan sheep skin with nano softening enzyme

A kind of sheepskin softening enzyme technology, applied in application, chemical treatment before tanning, small raw hide/big raw hide/leather/fur treatment, etc., can solve the problem of skin thickness, chrome tanning waste liquid pollution environment, aluminum salt and collagen fiber Combined with problems such as instability, it can reduce production costs, reduce environmental pollution, and reduce daily maintenance costs.

Inactive Publication Date: 2012-07-04
宁夏西部皮草有限公司
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AI Technical Summary

Problems solved by technology

The disadvantages of the chrome tanning method are that the skin yield is small, the skin board is thicker, hair loss occurs, and the chrome tanning waste liquid pollutes the environment; the disadvantages of the aluminum tanning method are that the neutral salt in the waste liquid pollutes the environment, aluminum salt and collagen The fiber bond is not strong and damages the fur

Method used

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  • Method for tanning Tan sheep skin with nano softening enzyme
  • Method for tanning Tan sheep skin with nano softening enzyme

Examples

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Embodiment Construction

[0013] Please see also figure 1 A method for tanning sheepskin with nano softening enzymes, comprising the following steps:

[0014] Step S300, pickling: use formic acid with a concentration of 2g / L-3g / L and sulfuric acid with a concentration of 1g / L to carry out pickling and full tanning on the washed sheepskin according to a predetermined ratio.

[0015] Step S301, regaining moisture: adding water at a temperature of 35-40°C to the drum to rehydrate the fully tanned sheepskin, adding 5% to 8% of nano softening enzyme to the drum, and rotating the drum at room temperature for 4-5 After one hour, the temperature is raised to 40-50° C., and the drum is continued to be rotated for 4-6 hours, and 0.5% to 1% of nano-softening enzyme is added to adjust the pH value to 2.5, so that the drum stops rotating.

[0016] Step S302, rinsing: adding 1% to 2% H to the drum 3 O rinse agent and 110% to 170% of 45 to 55°C water (water relative to the dry weight of sheepskin), continue to rota...

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Abstract

The invention relates to a method for tanning Tan sheep skin with a nano softening enzyme, which comprises the following steps: pickling; dampening; adding 5-8% of nano softening enzyme into a rotating drum; after the rotating drum is rotated for 4-5 hours at ordinary temperature, heating to 40-50 DEG C, continuing rotating the rotating drum for 4-6 hours, and adding 0.5-1% of nano softening enzyme to regulate the pH value to 2.5; rinsing; washing out loose color; and washing with water. Under the actions of the nano softening enzyme and acidic condition, elastic fibers and excess colloids in the skin can be effectively dissolved and removed; and since the action of the nano softening enzyme is mild, the invention can ensure the low hair slipping tendency and fullness of the Tan sheep skin. In addition, no chromium or aluminum salt is used, thereby relieving the environmental pollution, reducing the control and routine maintenance cost for waste water and lowering the production cost.

Description

Technical field: [0001] The invention relates to the technical field of animal fur processing, in particular to a method for tanning sheepskin with nano softening enzyme. Background technique: [0002] Existing Tan sheepskin tanning process mainly contains following several kinds: chrome tanning method, aluminum tanning method. The disadvantages of the chrome tanning method are that the skin yield is small, the skin board is thicker, hair loss occurs, and the chrome tanning waste liquid pollutes the environment; the disadvantages of the aluminum tanning method are that the neutral salt in the waste liquid pollutes the environment, aluminum salt and collagen The fibers are not bonded firmly and damage the fur. Invention content: [0003] The purpose of the present invention is to provide a method for tanning sheepskin with nano softening enzyme which can reduce environmental pollution and improve the quality of the tanned sheepskin. [0004] A method for tanning sheepskin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C1/08C14C3/08
Inventor 王自荣
Owner 宁夏西部皮草有限公司
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