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Process for preparing high-end marten coat leather through chromium-free multi-metal tanning agent

A multi-metal and tanning agent technology, applied in small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, tanning treatment, etc. Tanning is not resistant to washing, oil tanning waste and other problems, to avoid pollution, soft and plump leather, and prevent harm

Active Publication Date: 2019-02-01
浙江中辉裘革科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a process for preparing high-grade mink fur leather using a chromium-free multi-metal tanning agent, so as to solve the problems of the existing waste chrome, the inability of aluminum tanning to wash, and the waste of oil tanning. serious problems

Method used

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  • Process for preparing high-end marten coat leather through chromium-free multi-metal tanning agent
  • Process for preparing high-end marten coat leather through chromium-free multi-metal tanning agent
  • Process for preparing high-end marten coat leather through chromium-free multi-metal tanning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of chromium-free polymetallic tanning agent prepares the technique of high-grade mink fur leather, comprises the following steps:

[0037] Step 1, soaking in water; the same as the conventional process steps;

[0038] Step 2, remove the meat; the same as the conventional process steps;

[0039] Step three, degreasing;

[0040] Step 4, pickling and softening; same as conventional process steps;

[0041] Step five, tanning; the specific steps of tanning are as follows:

[0042] First, adjust the pH of the tanning solution to 2.8, the temperature is 35°C, and add the skins for 60 minutes. The amount of tanning solution is added according to the mass ratio of water to fur in tanning is 20; the composition of the tanning solution used for tanning is: industrial salt 60g / L , industrial formic acid 3g / L, the rest is water.

[0043] Then, add lanolin fatliquoring agent WS (Smit & zoon) 2.0g / l, soft fur fatliquoring agent YY-707 (Smit & zoon) 5.0g / l, processing time i...

Embodiment 2

[0066] A kind of chromium-free polymetallic tanning agent prepares the technique of high-grade mink fur leather, comprises the following steps:

[0067] Step 1, soaking in water; the same as the conventional process steps;

[0068] Step 2, remove the meat; the same as the conventional process steps;

[0069] Step 3, degreasing; the same as conventional process steps;

[0070] Step 4, pickling and softening; same as conventional process steps;

[0071] Step five, tanning; the specific steps of tanning are as follows:

[0072] Firstly, adjust the pH of the tanning solution to 3.0, the temperature is 40°C, add the skins for 30 minutes, and the amount of the tanning solution is added according to the mass ratio of water to fur in tanning is 25; the composition of the tanning solution used for tanning is: industrial salt 80g / L , industrial formic acid 1g / L, the rest is water.

[0073] Then, add lanolin fatliquoring agent WS (Smit & zoon) 3.0g / l, soft fur fatliquoring agent YY-7...

Embodiment 3

[0096] A kind of chromium-free polymetallic tanning agent prepares the technique of high-grade mink fur leather, comprises the following steps:

[0097] Step 1, soaking in water; the same as the conventional process steps;

[0098] Step 2, remove the meat; the same as the conventional process steps;

[0099] Step 3, degreasing; the same as conventional process steps;

[0100] Step 4, pickling and softening; same as conventional process steps;

[0101] Step five, tanning; the specific steps of tanning are as follows:

[0102] Firstly, adjust the pH of the tanning solution to 3.2, the temperature is 30°C, add the hides, the time is 40min, the amount of tanning solution is added according to the mass ratio of water to fur in tanning is 40; the composition of the tanning solution used for tanning is: industrial salt 50g / L , industrial formic acid 2g / L, the rest is water.

[0103] Then, add lanolin fatliquoring agent WS (Smit&zoon) 4.0g / l, light soft fur fatliquoring agent YY-7...

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Abstract

The invention relates to the technical field of marten coat leather processing processes, in particular to a process for preparing a high-end marten coat leather through a chromium-free multi-metal tanning agent. The process comprises the following steps of soaking in water, removing meat, degreasing, picking for softening, tanning, water milling, re-tanning, neutralizing for softening, greasing,dry finishing, and obtaining the finished product. According to the marten coat leather processing process provided by the invention, the finally obtained finished product is full and soft in hand feeling, white in leather board, washable and anti-yellowing, and the process is particularly suitable for manufacturing high-end marten coats in natural color and light color. According to the technology, no conventional aluminum tanning agent is used, the shrinkage temperature after tanning can reach to more than 90 DEG C, and meanwhile, the water resistance of a leather sheet is effectively improved; no aldehyde tanning agent is contained, so that no free formaldehyde is produced; no oil tanning is required, so that the production period is shortened, and meanwhile, the production cost can befurther reduced; and no chromium tanning agent is used, so that the pollution of chromium-containing three wastes can be avoided, and the harm of hexavalent chromium is avoided.

Description

technical field [0001] The invention relates to the technical field of mink fur processing technology, in particular to a process for preparing high-grade mink fur with a chromium-free multi-metal tanning agent. Background technique [0002] Mink fur is a precious high-grade fur product, known as the first of the three pillars of the international fur market, known as the "king of fur". Its leather board is fine, soft and firm, with rich plush and glossy color. The fur clothing made of it is elegant and luxurious, and is an ideal fur product. In addition to making traditional coat collars and hats, mink fur has become very popular in recent years as a dual-purpose product for mink shearling and fur. [0003] The processing and tanning method of mink fur is basically the process of using aluminum pre-tanning and then oil retanning. Aluminum tanning results in a white, full, supple, elongated skin. The filling and extensibility of aluminum also create conditions for the pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/28
CPCC14C3/28
Inventor 胡建中马建标沈跃庭谈正南
Owner 浙江中辉裘革科技有限公司
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