SU1742336A1 - Method of treating pelt - Google Patents

Abstract

Use: for processing possum skins. Essence: the possum wash is carried out in a solution containing 3 g / l of pre-target ND-11 and 3 g / l of NP-3 sulfonol. After washing in pure water, the first washing is carried out in a solution containing 20 g / l of sodium chloride, 0.5 g / l of sodium fluorosilicate and 1 g / l of peramite ML, the mezzanine and the second washing off in a solution containing 20 g / l of sodium chloride , 0.5 g / l of sodium fluorosilicate and 0.5 g / l of peramite ML. Pickling is carried out in a solution containing 60 g / l of sodium chloride, 1.5 g / l of formic acid and 6 g / l of acetic acid. Tanning is carried out in a solution containing 50 g / l of sodium chloride, 10 g / l of sodium thiosulfate and 0.35 g / l of chromic extract with a base of 1-5%, calculated on chromium oxide, to which, after 1 h, add 0.35 g / l of chromic extract with basic content of 35–40% in terms of chromium oxide, and after 3 h more potassium alum in the amount of 10 g / l. Tanning is carried out at a pH of 3.5-3.8 and a temperature of 37-38 ° C. Then, pressing, greasing, drying, hauling leather, breaking down and hauling hair are carried out. cl

Description

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The invention relates to the fur industry and can be used in the processing of new types of fur raw materials not previously processed.

The purpose of the invention is to expand the technological capabilities of the method due to the possibility of dressing possum skins.

Example 1. Possum washes were washed in a solution containing a non-inogenic preparation, representing the product of alkyl ethoxylation (Prevocel ND-11), 3.0 g / l, sulfanol NP 31.0 g / l. Bath temperature 41 ° C, duration of treatment 1 hour. Washing is carried out in pure water. Bath temperature 37 - 38 ° C, processing time 0.5 h.

The first washing is carried out in a solution containing, g / l: sodium chloride 20; sodium fluorosilicate 0.5; fatty alcohol sulfoester (peramite ML) 1.0. Bath temperature 33 ° С, duration 20 h. Rotation when loading skins for 20 min, and then for 10 min in each subsequent 1 h of treatment. Then the operation is performed on the intestine.

The second flow is carried out in a solution containing, g / l; sodium chloride 20; sodium fluorosilicate 0.5; fatty alcohol sulfoester (peramite ML) 0.5. Bath temperature 28 ° C, processing time 16h.

Pickling is carried out in a solution containing, g / l: sodium chloride 60; ant2

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1.5% acetic acid, 6.0 acetic acid. Bath temperature 35 ° C, processing time 20 h.

Then the following operations are carried out: spin, breakdown, gouging. Tanning is carried out in a solution containing, g / l: sodium chloride 50; sodium thiosulfate 10; 1 to 5% chromic extract in terms of chromium oxide 0.35, to which, after 1 h, 0.35 g / l of chromium extract with a basicity of 35 to 40% (in terms of chromium oxide) is added and after 3 h, 10 g / l of aluminum-potassium alum, and at the same time the pH of the solution is 3.5 - 3.8 and the temperature of the initial bath is 37-38 ° C.

Next, the spinning operation is carried out. Fatting is done with a 50% fat emulsion using Universal C fatty paste. The fat emulsion temperature is 40 ° C.

During the drying operation, the hauling of the leather fabric is carried out as follows: sawdust mixed with turpentine is poured into the drum, and then after 1 h the sawdust is replaced.

During the breakdown operation, hauling of hair is carried out as follows: sawdust is poured into the drum, ammonia is added, after 1-1.5 hours, sawdust is replaced and hauling continues 2 to 3 hours.

Then the following operations are carried out: punching, breaking up, grinding, combing, sorting, packaging.

Example 2. The wash of the possum is carried out in a solution containing, g / l: fatty alcohol (tetrapol SAF) 3.0; sulfonol NP-3 1.0. The bath temperature is 41 ° C, the treatment time is 1 hour. Rinsing is carried out in pure water. The bath temperature is 37–38 ° C, the processing time is 0.5 h.

The first washing is carried out in a solution containing, g / l: sodium chloride 20; sodium fluorosilicate 0.5; alkylamine with disinfectant (mollescal C) 1.0. Bath temperature 33 ° C, processing time 20 h.

Then the operation is performed on the intestine.

The second flow is carried out in a solution containing, g / l: sodium chloride, 20; sodium fluorosilicate 0.5; alkylamine with disinfectant (mollescal C) 0.5. Bath temperature 28 ° C, processing time 16h.

Pickling is carried out in a solution containing, g / l: sodium chloride 60; acetic acid 10. Bath temperature 35 ° C, duration 20 h.

Tanning is carried out in a solution containing, g / l: sodium chloride 50; sodium thiosulfate .10; chromic extract with a basicity of 1 - 5% in terms of chromium oxide; 0.35, to which, after 1 hour, 0.35 g / l of chromic extract with a basicity of 35-40% (calculated as chromium oxide) is added, and after 3 hours 10 g / l of aluminum-potassium alum is added, while the pH of the solution is 3.5 - 3.8 and the temperature of the initial bath 37 - 38 ° C.

Next, the spinning operation is carried out.

Fatting is performed with a 50% fat emulsion using Universal C fatty paste. The fat emulsion temperature is 40 ° C.

During the drying operation, pumping of leather is carried out as follows: sawdust mixed with turpentine is poured into the drum, then after 1 h, the sawdust is replaced. Then a breakdown operation is performed. The hauling of the hair coat is carried out as follows: sawdust is poured into the drum, ammonia is added, after 1-1.5 hours, sawdust is replaced and hauling continues for 2 to 3 hours. Then the operation is performed by grinding, dividing, grinding, combing, sorting and packing.

The proposed method allows to obtain isolated opossum skins with a soft leather fabric and clean, crumbly hair.

Claims (1)

Invention Formula The method of processing fur skins, including washing in a solution containing 3 g / l of surfactant — NP-3 sulfonol, drain, rinsing, drain, first washing in a solution containing 20 g / l sodium chloride, 0.5 g / l sodium fluorosilicate and a fatty alcohol sulfoester of ether, peremite ML, meats, second washout in a solution containing 20 g / l of sodium chloride and 0.5 g / l of sodium fluorosilicate, pickled in a solution containing sulfuric and acetic acid and sodium chloride tanning in solution containing 50 g / l sodium chloride, 10 g / l sodium thiosulfate, 0.5 g / l chromium first extract with basicity of 1 - 5% and 10 g / l of potassium alum, fattening, drying and subsequent finishing operations, characterized in that, in order to ensure the possibility of ossum skins, additional ND-11 additionally in the amount of 1 is added to the washing solution g / l; for the first soaking, peremit ML is used in the amount of 1 g / l; when pickling, sodium chloride consumption is 60 g / l; formic acid 1.5 g / l "acetic acid; 6 g / l; chromic extract with a basicity of 1, -5% is 0.35 g / l in terms of chromium oxide, moreover chromium extract additionally injected 1 h after the start of tanning 517423366 basicity 35 - 40% in the amount of 0.35 g / l, tanning and the process is carried out at a pH of 3.5 - 3.8 and in terms of chromium oxide, and aluminum and metal temperatures of 37 - 38 ° C. alum added after 4 hours from start