Method of treating skins of sea animals

 

(57) Abstract:

The invention relates to the processing of hides and skins of sea animals, refers to light industry and can be used in the processing of hides and skins of sea animals, preserved with the use of the drug "Gamma". The skins are subjected to pickling aqueous solution comprising sodium chloride and formic acid. Then subjected to creasing, finishing and dyeing. When the dyeing is conducted before pickling acid dyes. Pickling is carried out in two stages with intermediate aging. In the first stage, add the drug, "Gamma-2" in the amount of 2.0-3.0 g/l, after that 1.0 to 1.5 hours to enter formic acid. Processing at the first stage are within 20-24 h, and the second stage is 10-12 hours Method reduces the processing time for the skins for 3 days, to exclude the process of chrome tanning salts, which improves the environmental parameters of the obtained semi-finished product, improves the quality of the skins, on average, 4%, and increases the output square skins on average by 6%. 1 C. p. F.-ly, 2 tab.

The present invention relates to light industry, in particular the fur sub-sectors, and can be used in the processing of hides and skins of sea animals, scanserver the surrounding pickling at a temperature of 30oC for 10-12 hours (LC 5) water composition (g/l) containing sodium chloride - 60; sulfuric acid - 1; acetic acid - 5; formic acid - 4; ammonium chloride - 5; formic acid to give after 4 hours from the start of processing.

Then perform aging for 24 hours. Further, when the treatment is carried out tanning, greasing, ocenochnye operations and dyeing oxidising colouring agents (research report "to Develop a Unified technology of treating skins of sea animals, norms of consumption of chemicals and the circuit control technology" cipher 26870502, VNIIMP, M. , 1987, N state of registration 01870010153 - prototype).

The main problem to address with the inventive method of treating skins of sea animals, is to reduce processing time, increase quality and output square skins.

This object is achieved by the proposed method of treating skins of sea animals. The essence of the proposed method consists in the aggregate of the following essential characteristics sufficient to achieve the technical result: in the way of processing hides and skins of sea animals by pickling water composition that includes sodium chloride and formic acid, Jerome, but pickling is carried out in two stages with intermediate aging, while at the first stage, add the drug, "Gamma-2" in the amount of 2.0-3.0 g/l, and then through a 1.0-1.5 hours enter formic acid, in addition, the processing in the first stage are within 20-24 hours, and the second stage is 10-12 hours.

Pickling in the first stage, carried out a composition containing, g/l: sodium chloride - 40-50; drug "Gamma-2" - 2,0-3,0; formic acid - 12,0-13,0; water to liters, and in the second stage, the composition containing, g/l: sodium chloride - 40-50; formic acid - 8-10; water to liters.

Comparative analysis of the proposed technical solutions to the prototype (see table. 1) allows you to highlight the distinctive features of the proposed method: the dyeing carried out before pickling, and the dyeing lead acid dyes, and pickling is performed with the intermediate aging in two stages, the first stage add product "Gamma-2" in the amount of 2.0-3.0 g/l, and then through a 1.0-1.5 hours enter formic acid, in addition, the processing in the first stage are within 20-24 hours, and the second stage is 10-12 hours.

The drug "Gamma-2" manufactured by industry on the basis of the technical conditions TU 238100-12/01-00302474-2000 "P is chestno-active substances, organic solvent and special additives on the basis of cyclic terpenes.

The present invention may be found to comply with the condition of "inventive step", so as not detected known technical solutions that have the signs consistent with its distinguishing characteristics. The mentioned set of features in comparison with the prototype achieves the claimed technical result. The inventive method are optimal, since the output for the lower limit of the claimed technical result is not achieved, and the upper limit is not economically advisable. Data supporting the achievement of the claimed technical result is shown in table. 2. On standardized indicators skins fully meet the requirements of GOST 11809-82.

The processing of hides and skins of sea animals, preserved with the use of the drug, "Gamma", in accordance with the inventive method is as follows: the skins to the process of pickling process of the prototype, followed by dyeing with acid dyes at a temperature of 60oC for 2.5 hours. Then do the rinse 2 times, followed by the 1st stage of pickling: oral sodium - 40-50, the drug "Gamma-2" - 2,0-3,0 and formic acid - 12,0-13,0, while formic acid is added over 1.0-1.5 hours from the beginning of pickling. After 12-24 hours of aging conduct 2nd stage of pickling: the process is conducted in the boat when the LCD 5, 35oC for 10-12 hours in an aqueous composition containing, g/l: sodium chloride - 40-50. Next, perform aging for 10-12 hours. Followed by greasing, finish, etc. of the prototype.

Specific examples of the proposed method of treating skins of sea animals, preserved drug Gamma table. 1 (examples 1-3).

The proposed method of treating skins of sea animals was tested under production conditions. The test results are positive.

The proposed method of treating skins of sea animals allows you to:

to reduce the processing time for the skins for 3 days;

- to exclude the process of chrome tanning salts, which improves the environmental parameters of the obtained semi-finished product;

to improve the quality of the skins, on average, 4%, quality assessment on average by 6.6%;

to increase the exit area of skin on average by 6%.

Based on the above we can conclude: the proposed technical solution is nologically essential features of the claimed result. The use of the proposed structure provides this technical result, which indicates compliance of this invention the term "industrial applicability".

1. Method of treating skins of sea animals by pickling water composition that includes sodium chloride and formic acid, aging, fatliquoring, finishing and dyeing, characterized in that the dyeing is conducted with acid dyes before pickling, pickling is carried out in two stages with intermediate aging, while at the first stage, add the drug, "Gamma-2" in the amount of 2.0-3.0 g/l formic acid is injected through 1.0 to 1.5 h, in addition, the processing in the first stage are within 20-24 h, and on the second - 10-12 PM

2. The method according to p. 1, characterized in that the pickling of the first stage of conducting composition containing, g/l:

Sodium chloride - 40,0 - 50,0

The drug "Gamma-2" - 2,0 - 3,0

Formic acid - 12,0 - 13,0

Water To 1 liter

and in the second stage, the composition containing, g/l:

Sodium chloride - 40,0 - 50,0

Formic acid - 8,0 - 10,0

Water Up to 1 l

 

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