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Integrated process of tanning leather from quebracho extracts

An integrated technology of tanning wool leather, applied in the field of wool leather production technology, can solve the problems of unusable wool leather industry, brittleness and cracking of tannin extract, etc., and achieve the effects of obvious writing effect, short raising and high quality.

Inactive Publication Date: 2013-04-24
孟凡标
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is that the tannin extract is brittle, and the fracture cannot be used in the fur industry, and an integrated process of tannin tanning fur leather is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An integrated process of extracting tanned fur and leather, including skin selection, initial stripping, soaking in water, fleshing, degreasing, pickling, tanning, neutralizing, filling, grinding, and dyeing. The filler used for filling is quince extract.

[0015] The operation steps of the pickling process are as follows: add 200 liters of water into the acid pool, adjust the rotating speed of the drum to 18 rpm, add 12 kg of salt, 1.2 kg of sodium sulfate, and rotate for 20 minutes, then put 10 pieces of sheepskin, add the added Fat agent ST 0.4 kg, sodium formate 1.4 kg, penetrant Usabang OE 0.12 kg, formic acid 2 kg, adjust the pH to 3.0, and react for 16 hours at 35°C, then take out the leather and let it stand for 30 hours. The raw materials in the pickling process can be recycled, and the following raw materials are replenished every 20 days: 1.6 kg of salt, 0.8 kg of sodium bicarbonate, 0.4 kg of fatliquoring agent ST, 0.8 kg of sodium formate, 0.1 kg of penetran...

Embodiment 2

[0020] An integrated process of extracting tanned fur and leather, including skin selection, initial stripping, soaking in water, fleshing, degreasing, pickling, tanning, neutralizing, filling, grinding, and dyeing. The filler used for filling is quince extract.

[0021] The operation steps of the pickling process are as follows: add 200 liters of water into the acid pool, adjust the rotating speed of the drum to 16 rpm, add 10 kg of salt, 0.8 kg of sodium sulfate, and rotate for 10 minutes, then put 10 pieces of sheepskin, add the added 0.2 kg of fat agent ST, 1.2 kg of sodium formate, 0.08 kg of penetrant Usabang OE, 1.2 kg of formic acid, adjust the pH to 2.8, and react for 14 hours at 30°C, then take out the leather and let it stand for 20 hours. The raw materials in the pickling process can be recycled, and the following raw materials are replenished every 15 days: 1.2 kg of salt, 0.4 kg of sodium bicarbonate, 0.2 kg of fatliquoring agent ST, 0.6 kg of sodium formate, 0.04...

Embodiment 3

[0026] An integrated process of extracting tanned fur and leather, including skin selection, initial stripping, soaking in water, fleshing, degreasing, pickling, tanning, neutralizing, filling, grinding, and dyeing. The filler used for filling is quince extract.

[0027] The operation steps of the pickling process are as follows: add 200 liters of water into the acid pool, adjust the rotating speed of the drum to 18 rpm, add 10 kg of salt, 1 kg of Yuanming powder, and rotate for 15 minutes, then put 10 pieces of sheepskin, add the added Fat agent ST 0.3 kg, sodium formate 1.3 kg, penetrant Usabang OE 1.2 kg, formic acid 1.5 kg, adjust pH to 3.0, react at 35°C for 15 hours, then take out the leather and let it stand for 30 hours. The raw materials in the pickling process can be recycled, and the following raw materials are replenished every 20 days: 1.6 kg of salt, 0.5 kg of sodium bicarbonate, 0.3 kg of fatliquor ST, 0.7 kg of sodium formate, 0.05 kg of penetrant Usabang OE, 1 ...

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Abstract

The invention discloses an integrated process of tanning leather from quebracho extracts, which comprises skin selection, preliminary peeling, soaking, fleshing, degreasing, pickling, tanning, neutralization, filling, leather grinding and dyeing, wherein quebracho extracts are used for filling. The invention only requires the step of tanning, uses few materials, has good effect and high quality, saves energy, protects environment, reduces dosage of chromium powder by 70%, and reduces total cost by 40%. The filling process moderates association of quebracho extract molecules, and adjusts balance among penetrability, dispersivity and associativity. The invention fully reflects fillibility of quebracho extracts, surface grinding and stability of three-dimensional structure, has good molding,short and equal fine hair and obvious writing effect, has unexpected effect and solves the bias that quebracho extract is fragile, is easy to break and is unable for producing leather.

Description

technical field [0001] The invention relates to a fur leather production process, in particular to an integrated process of tanning and tanning fur leather. Background technique [0002] From the mid-1970s to the early 1990s in my country, the integrated fur and leather production process mainly followed the production process formulated by the Fur and Leather Research Institute of the Ministry of Light Industry of China, which was the fur leather production process at that time. From the early 1990s to the late 1990s, with the improvement of wool and leather integration technology and the spread of foreign technology, domestic technology and foreign technology were combined to form the current wool and leather integration production process. The present situation of fur and leather integrated production mostly adopts natural crafts formed by domestic traditional crafts and foreign disseminated technologies. Low product quality, poor environmental performance, serious envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/00C14C9/04C14C3/02
Inventor 孟凡标
Owner 孟凡标
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