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Sheep leather tanning method

A sheepskin and tanning technology, applied in the field of leather processing, can solve the problems of difficult to achieve physical properties, low shrinkage temperature, poor tear strength, etc.

Active Publication Date: 2016-07-27
隆丰革乐美时尚有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, compared with goatskin, sheepskin, as an ideal material for producing high-grade garment leather, has the characteristics of fine grain and soft leather board. Due to the loose fiber weaving of sheepskin itself, the tanning method provided by the above-mentioned patent is more effective in the tanning of sheepskin. There are great limitations. The finished leather after tanning generally has low tensile strength, poor tear strength and low shrinkage temperature, and it is difficult to achieve high physical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] (1) Experiment based on 10 skins: the weight of raw hides is 3.5kg / sheet, add 20kg of water into the drum, add 140g of S2 type water soaking enzyme, 105g of 830B type fungicide and 175g of sodium carbonate, and turn for 30min at 25°C Then turn to automatic, 10 minutes per hour, the total soaking time is 12 hours, drain the water, and get the soaked sheep skin; then use the CM meat remover to cut the head and tail of the soaked sheep skin, and then control the water for 2 hours. Obtain the sheep skin after the meat removal; place the sheep skin after the meat removal in the ash drench channel, set the rotating speed as 220r / min, open the 2 rows of nozzles, and use the sodium sulfide with a concentration of 16°Bé to drench the ash, and then use Depilation by a depilator to obtain sheepskin after depilation; then add a sodium sulfide solution with a concentration of 15g / L in the drum, and soak the sheepskin after depilation in the above sodium sulfide solution. Under the c...

Embodiment 2

[0101](1) Experiment based on 10 skins: the weight of raw hides is 3.5kg / sheet, add 20kg of water to the drum, add 140g of S2 type water soaking enzyme, 105g of 830B type bactericide and 175g of sodium carbonate water, at 25°C, After turning for 30 minutes, turn to automatic, turn for 10 minutes per hour, the total soaking time is 12 hours, and drain to obtain the soaked sheepskin; then use the CM meat remover to remove the head and tail of the soaked sheepskin, and then control the water 2h, get the sheep skin after the meat removal; place the sheep skin after the meat removal in the ash drench channel, set the rotating speed as 220r / min, open the 2 rows of nozzles, and use the sodium sulfide with a concentration of 16°Bé to drench the ash, After that, depilate with a depilator to obtain sheepskin after depilation; then add a sodium sulfide solution with a concentration of 15g / L in the drum, and soak the sheepskin after depilation in the above sodium sulfide solution at 22 Un...

Embodiment 3

[0109] (1) Experiment based on 10 skins: the weight of raw hides is 3.5kg / sheet, add 20kg of water into the drum, add 140g of S2 type water soaking enzyme, 105g of 830B type bactericide and 175g of sodium carbonate. After 30 minutes, turn it to automatic, and turn it to 10 minutes per hour. The total soaking time is 12 hours, drain the water, and get the soaked sheep skin; then use the CM meat remover to remove the head and tail of the soaked sheep skin, and then control the water for 2 hours , to obtain the sheep skin after the meat removal; the sheep skin after the meat removal is placed in the ash drench channel again, the setting speed is 220r / min, open the 2 rows of nozzles, and use the sodium sulfide with a concentration of 16 ° Bé to drench the ash, then Depilate with a depilator to obtain depilated sheepskin; then add a sodium sulfide solution with a concentration of 15g / L to the drum, and soak the depilated sheepskin in the above sodium sulfide solution at 22°C Under ...

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Abstract

The invention provides a sheep leather tanning method. The sheep leather tanning method comprises a, carrying out pickling processing on sheep skin to be treated, b, carrying out pre-tanning on the pickled sheep leather through a first tanning agent which is a modified oxazolidine tanning agent, and c, carrying out re-tanning on the pre-tanned sheep leather through a second tanning agent which is a mixed tanning agent of a modified oxazolidine tanning agent, an organophosphorus tanning agent and a plant tanning agent. Compared with a leather product obtained through the prior art, a leather finished product obtained by the sheep leather tanning method has a shrinkage temperature of 100 DEG C or more and tearing strength of 6.5kgf or more.

Description

technical field [0001] The invention relates to the technical field of leather processing, in particular to a method for tanning sheepskin. Background technique [0002] Tanning refers to the physical and chemical process of turning raw hide into leather through tanning agents. Through tanning, cross-linking bonds can be formed between the collagen polypeptide chains of the skin, the stability of the collagen structure can be increased, the shrinkage temperature and the resistance to heat and humidity can be increased, and the acid resistance can be improved. , alkali, enzymes and other chemicals. At present, the conventional tanning method is mainly metal tanning method, especially chrome tanning method is the most common, but metal tanning method will form a large amount of wastewater and solid waste that are difficult to treat, and there is a problem of heavy metal pollution, which will cause serious harm to the environment and human body. serious impact. [0003] In re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/28C14C3/08C14C3/10
Inventor 写文彬冯雪伟
Owner 隆丰革乐美时尚有限公司