Tanning method for double-face leather

A dual-purpose, wool leather technology, applied in the application, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. Reduce the softness, reduce the bonding force between the quilt and the skin, and easily cause hair loss, etc., to achieve the effect of improving the plumpness, plumpness of the skin, shrinking temperature and high softness

Inactive Publication Date: 2012-07-04
HENAN PROSPER SKINS & LEATHER ENTERPRISE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has little pollution to the environment, the tanned skin is relatively stiff, and applying it to dual-purpose fur and leather tends to reduce the bonding force between the quilt and the leather, making the dual-purpose fur and leather plump after tanning Decreased firmness and softness, and prone to hair loss

Method used

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  • Tanning method for double-face leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Pretreatment

[0046] The sheepskin is soaked in water, the soaking solution includes: 1% non-ionic degreasing agent, 1% soaking aid and 3000% water, and the soaking time is 24 hours;

[0047] The sheepskin after soaking in water is softened, and the softening agent includes: 2.1% softening enzyme, 0.3% sodium carbonate and 200% water, and the softening time is 90 minutes;

[0048] The softened sheepskin is subjected to pickling treatment, the pickling solution includes: 3% formic acid, 0.6% sulfuric acid and 1200% water, and the pickling time is 180 minutes.

[0049] 2. Main tanning

[0050] Add 10% sodium chloride, 6% tetrakis hydroxymethyl phosphine sulfate and 0.8% tanning auxiliary to the pickling solution, put the above mixed solution into the drum, put the dual-purpose skin of fur and leather obtained in step 1 into the drum In the drum, set the main tanning temperature to 32°C and rotate for 30 minutes to complete the main tanning.

[0051] 3. Retanning

...

Embodiment 2

[0054] 1. Pretreatment

[0055] The sheepskin is soaked in water, the soaking solution includes: 0.9% non-ionic degreasing agent, 0.9% soaking aid and 2500% water, and the soaking time is 24 hours;

[0056] The sheepskin after soaking in water is softened, and the softening agent includes: 1.5% softening enzyme, 0.2% sodium carbonate and 200% water, and the softening time is 90 minutes;

[0057] The softened sheepskin is subjected to pickling treatment, the pickling solution includes: 2% formic acid, 0.6% sulfuric acid and 1000% water, and the pickling time is 180 minutes.

[0058] 2. Main tanning

[0059] Add 9% sodium bicarbonate, 5% tetrakis hydroxymethyl phosphine chloride and 0.6% tanning auxiliary to the pickling solution, put the above mixed solution into the drum, put the dual-purpose leather obtained in step 1 into In the drum, set the main tanning temperature to 30°C, and rotate for 35 minutes to complete the main tanning.

[0060] 3. Retanning

[0061] Continue ...

Embodiment 3

[0063] 1. Pretreatment

[0064] The sheepskin is soaked in water, the soaking solution includes: 1.2% non-ionic degreasing agent, 1.2% soaking aid and 3500% water, and the soaking time is 24 hours;

[0065] The sheepskin after soaking in water is softened, and the softening agent includes: 2.5% softening enzyme, 0.4% sodium carbonate and 200% water, and the softening time is 90 minutes;

[0066] The softened sheepskin is subjected to pickling treatment, the pickling solution includes: 4% formic acid, 0.8% sulfuric acid and 1200% water, and the pickling time is 180 minutes.

[0067] 2. Main tanning

[0068] Add 13% sodium chloride, 6% tetrakis hydroxymethyl phosphine sulfate and 0.8% tanning auxiliary to the pickling solution, put the above mixed solution into the drum, put the dual-purpose skin of fur and leather obtained in step 1 into the drum In the drum, set the main tanning temperature to 30°C and rotate for 25 minutes to complete the main tanning.

[0069] 3. Retannin...

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Abstract

The invention provides a tanning method for double-face leather, which includes conducting soaking processing, softening processing and pickle processing on the double-face leather sequentially; adding inorganic salt, 4-hydroxymethyl phosphine and tanning auxiliaries into mixing solution after pickle processing to obtain a first tanning agent, and using the first tanning agent to conduct main tanning on the double-face leather after the pickle processing; and adding a sulfone tanning agent and protein filler into the mixing solution after the main tanning to obtain a second tanning agent, and using the second tanning agent to conduct retanning on the double-face leather after the main tanning. The double-face leather after the main tanning is not easy to depilate, rich and soft in a leather board and high in thermal contraction temperature, has good abrasion resistance and filling performance, and is especially suitable for being used as leather for shoes, medical treatment and saddles.

Description

technical field [0001] The invention relates to the field of leather production, in particular to a method for tanning dual-purpose fur and leather. Background technique [0002] Leather is a product obtained by dehairing, de-fleshing and tanning animal skin. Fur is a product that integrates skin and hair after keeping the fur part of the animal skin, de-fleshing and tanning the animal skin. Fur is made of wool quilt and The leather board is composed of two parts. The fur board is flexible and the fur is loose and bright. It is the raw material for making high-end clothing, household tapestries, and car interiors. Fur and leather dual-purpose leather is a product developed in recent years that has the characteristics of both fur and leather. Fur and leather dual-purpose leather not only requires the fur to be loose and bright, but also requires the leather board to be denser. It is an important shoe leather and medical leather. and saddle leather raw materials. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/02C14C3/08C14C3/28C14C1/08C14C1/04
Inventor 仲济德杨居正王洪中杨果赵红军李恩刘明于静张晓庆
Owner HENAN PROSPER SKINS & LEATHER ENTERPRISE
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