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Tanning method of sheep skins

A sheepskin, tanning 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. Economic benefits and other issues, to achieve the effect of easy softening and preventing grease formation

Inactive Publication Date: 2012-07-18
HEBEI DONGMING LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after tanning, shrinkage leather shrinks a lot and will be smaller than the original leather, which is not beautiful and affects economic benefits.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for tanning sheepskin, comprising the following steps:

[0023] (1) Deacidify and soften 3000kg of New Zealand sheep skin until the edges of the skin appear delaminated;

[0024] (2) Put the deacidified and softened skin into the drum, add 2250kg of water and 250kg of salt, rotate for 10min, and the Baume degree is 7;

[0025] (3) Add 15kg of formic acid into the drum, and after rotating for 30 minutes, add 9 kg of sulfuric acid with a mass fraction of 93%, and after rotating for 80 minutes, add 15 kg of emulsifier, rotate for 30 minutes, and keep the pH value at 3. The emulsifier is anionic sulfated fat Alcohol emulsifier, the model is SAF;

[0026] (4) Add 80 kg of chrome-free tanning agent to the drum, and after rotating for 180 minutes, add 30 kg of sodium formate, and after rotating for 30 minutes, add 45 kg of baking soda to adjust the pH value to 5. Chrome tanning agent;

[0027] (5) Add 90kg of syntan to the drum and rotate for 120min. The syntan is ...

Embodiment 2

[0030] A method for tanning sheepskin, comprising the following steps:

[0031] (1) Deacidify and soften 3000kg of New Zealand sheep skin until the edges of the skin appear delaminated;

[0032] (2) Put the deacidified and softened skin into the drum, add 2000kg of water and 300kg of salt, rotate for 8 minutes, and the Baume degree is 9;

[0033] (3) Add 15kg of formic acid into the drum, after rotating for 10 minutes, add 9kg of sulfuric acid with a mass fraction of 93%, after rotating for 90 minutes, add 15kg of emulsifier, rotate for 50 minutes, keep the pH value at 3.5, and the emulsifier is anionic sulfated fat Alcohol emulsifier, the model is SAF;

[0034] (4) Add 60kg of chrome-free tanning agent to the drum. After rotating for 100 minutes, add 30kg of sodium formate. After rotating for 10 minutes, add 39kg of baking soda to adjust the pH value to 4. Chrome tanning agent;

[0035] (5) Add 60kg of syntan to the drum and rotate for 200 minutes. The syntan is cresol mul...

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PUM

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Abstract

The invention discloses a tanning method of sheep skins and belongs to the field of leather tanning. The tanning method comprises the following steps of: (1) disacidifying and softening naked New Zealand sheep skins till the edges of the naked sheep skins are layered; (2) putting the disacidifed and softened naked skins into a rotary drum, adding water and salt, and rotating for 8-12min, wherein the baume degree is 6-9; (3) adding methanoic acid, adding sulfuric acid after rotating for 10-50min, adding an emulsifying agent after rotating for 60-90min, and rotating for 10-50min; (4) adding a chrome free tanning agent, adding sodium formate after rotating for 100-300min, and adding sodium bicarbonate after rotating for 10-50min; and (5) adding a synthetic tanning agent and rotating for 50-200min. The fibers of the naked New Zealand sheep skins selected in the method are loose and easy to soften; leathers tanned by using the method are more attractive in comparison with shrinkage leathers; and after tanning is finished, the paper size of the leathers is no less than that of the original skins.

Description

technical field [0001] The invention relates to a sheepskin tanning method, which belongs to the field of leather tanning. Background technique [0002] Shrunk leather has long been a popular style and is used in bags, garments and shoe uppers. However, after the tanning is completed, the shrunken leather shrinks greatly and is smaller than the original leather, which is not beautiful but also affects economic benefits. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sheepskin tanning method. The New Zealand sheep skin selected by the present invention has loose fibers and is easy to soften. The leather tanned by the method of the present invention is more beautiful than shrinkage leather. After tanning, the leather The paper size is not smaller than the original leather. [0004] The technical solution adopted by the present invention is: a method for tanning sheepskin, comprising the following steps: [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/30
Inventor 杨岗
Owner HEBEI DONGMING LEATHER
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