SU1227680A1 - Method of dressing fur skins - Google Patents

Description

one

The invention relates to light industry, in particular, to fur technology, and can be used in the production of furs with dyed hair.

The purpose of the invention is to reduce shrinkage of the area and water drainage, to improve sanitary and hygienic working conditions and to increase the quality of skins.

The lashing of the fur hides includes treating them with an aqueous composition to pickle tanning and fattening, containing acetic acid, sulfuric acid, hrome tanning agent, hyposulfite, soda ash and fat; coal, consisting of industrial oil and refined procreate, is applied. - grinding, dyeing with acid dyes in the presence of an acid reagent, washing, soldering, drying, drying and finishing. After paying, additional fur skins are treated with an aqueous retanning composition containing, g / l:

Cooking salt 30.0-40.0

Chrome tanner

(in terms of

chromium oxide) 2.5-3.0

Non-ionic

surface active

substance0,1-0,3

Chrompik0,5-1,0

7-water ethylenediaminetetraacetate

C (thiosulfate)

zinc (pectothiosulfate) zinc

dopecoammonium

salt stabilized with sodium sulfate 0.5-1.5

Water up to 1 l

at 30-35 C 3-5 hours

As a rule, the composition for pickling - tanning - fattening contains a chrome tanning agent (in terms of OX1-U chrome) in an amount of 1.5-2.0 g / when dyeing sulfuric acid is used as an acid reagent and the process is carried out at 55-68 ° C .

Example 1. Fur sheepskin after washing and degreasing operations is subjected to pickling - tanning. - stitching at liquid coefficient (W, K.) 7 during 2768П2

18 hours with the following content of components in the bath, g / l: Salt 40.0 Acetic acid 2.0 5 Sulfuric acid 2.4 Chromic tanning agent (in terms of oxide, chromium) 1, 5 Hyposulphite 2.0 10 10 Soda calcinated 0., 5 Fat emulsion

industrial oil

15I-12A 10.0

Prepell W-OF-100 1.0 Turpentine 0.5

Water up to 1 l

20 Thereafter, the bed is laid for 4 hours, squeezing, plating, weighing and retanning while w.k. 10, temperature 30 ° С for 5 hours in the following ratio of components in the bath, g / l:

Cooking salt 30.0 Chromium tanning agent (in terms of chromium oxide) 2.5 Prevocell

W-OF-1000,1

ChrompikO 3 5

7-Aqueous ethylene-digmintetraacetate (thiosulfate) zinc Spectothiosulfate pink dopecoammonium salt stabilized with sodium sulfate 0.5 Water up to 1 l

The process of retanning is carried out as follows.

Water is poured into the barge, table salt, a non-ionic surfactant and a complex zinc salt are added, and skins are loaded. After 0.5–1 h, do not drain the solution and do not burn out {the skins, give a chromium tanning agent and chromate peak into the bath and the process

35

40

45

50

another.1-4 hours

, A drain is produced for 1 hour and the sheepskin is painted for 3 hours at well, 10 and at a temperature of 68 ° C in the following ratio of components in the bath, g / l;

Acid black

for fur or dermapeltschwartz BJ 3.0. Acid anthraquinone pure-blue 0.17 Alkylolamide 1.0 Sulfuric acid 1.5 Water Up to 1 l N of solution after giving acid 2.5. After cracking, the sheepskin is subjected to repeated washing with clean water for 0.5 h and solkyurization for 2.0 h. Next, the sheepskins are squeezed, tubed and trimmed.

Example 2. Fur sheepskin after washing-degreasing operations

subjected to pickling - tanning - fattening at 4l C, g.k. 7 for 17 h with the following content of components in the bath, g / l:

Steamed salt. 45.0 Acetic acid 2.1 Sulfuric acid 2.5 Chromic tanning agent (in terms of chromium oxide)

Hyposulfite3,0

Soda ash 0, 75 Fat emulsion

industrial oil

I-12A 11.0 precells

W-OF-100 1.1 Turpentine 0.6

Water up to 1 l

After this, it is allowed to lay for 6 hours, spinning, plating, weighing and retanching while w.k. 10, temperature 32 С for 4 hours in the following ratio of components in the bath, g / l: Cooking salt Chromium (in terms of chromium oxide) OP-10 Chrompik

7-Aqueous ethylene diamine tetraacetate C (thiosulfate) zinc (pectothiosulfate) zinc dopeeammonium salt stabilized with sulfuric acid 1, 0 Water Up to 1 l The process of retanning is carried out as follows.

35.0

2.75

0.2

0.75

V

,

with

2276804

Water is poured into the bark, table salt, a non-ionic surfactant and a complex zinc salt are added and skins are loaded. 5 After 0.5-1 h, without draining the solution and without unloading the skins, a chrome tanning agent and a chrome coating are given into the bath and the process continues for another 3.0-3.5 hours.

Then a drain is produced for 10-1 hours and the sheepskin is painted for 3.5 hours at 10 ° F and temperature in the following ratio of components B to the bath, g / l:

Acid Black 15 for fur or dermapeltschwartz BL 4.0 Acid anthraquinone pure blue 0.2 20 Alkylolamide1.1 Sulfuric acid 1.75 Water Up to 1 liter of solution pH after acid 2.4. After dyeing, sheepskin is subjected to 25 double rinsing with clean water for 0.5 h and solky-frying for 2.0 h. Next, sheepskins are squeezed, dried and trimmed.

Example 3. Fur sheepskin - after washing and degreasing operations subjected to pickling - tanning - greasing at 42 s, g.k. 7 for 16 h with the following ratio of components in the bath, g / l:

Cooking salt 50.0 Acetic acid 2.2 Sulfuric acid 2,6 Chromic tanning agent (in terms of chromium oxide) 2.0

Hyposulphite4.0

Soda Ash 1, 0 Grease emulsion

industrial oil

I-12A 12,0 precellars W-OF-100 1,2 Turpentine0,7

Water up to 1 l

Thereafter, a space test is performed for .10 h, spinning, plating, weighing and retanning while w.k. 10, temperature 35 ° С for 3 hours in the following ratio of components in the bath, g / l:

Cooking salt 40.0 Chrome tanning agent

35

40

45

50

55

(in terms of hydroxy, C is chromium) 3.0

Snntano:} DS-10 0.3 Chrompik1.0

/ --Water with ethylenediamictetraacetate (thiosulfate) zinc (pectothiosulfate) zinc dopecoammonium- on salt stabilized with sodium sulfate 1, 5 Water up to 1 l

The process of retanning is carried out in the following way.

Water is poured into the bark, table salt, non-nutrient surfactant and complex zinc salt are added and skins are loaded. After 0.5-1 hours, without draining the solution and without unloading the skins, chromium tanning agents and bromide are given into the bath and the process continues for another 2.0-2.5 hours.

Next, stock is produced for hours; the sheepskins are painted with oil. 10, temperature 55 ° C for 4 h with the following content of components in a bath, g / l:

Acid chernsh for fur or dermapeltsshvarts BL 4,5 Acid anthraquinone pure-1 0.05

Alkilolamid 1,2

Sulfuric acid 2,0 Water up to 1 l

the pH of the solution after giving acid 2,3. After dyeing, the sheepskin is washed twice with pure water and solkyed for 2 hours. Next, the sheepskins are squeezed, dried and separated.

5 table mapped efficacy; awn manufacture fur sheepskin known and proposed methods.

The effectiveness of the dressing is estimated by shrinkage of sheepskin, the water ratio is 1000 pcs. sheepskins during liquid operations and processes and the quality of the finished semi-finished product,

The determination of shrinkage of sheepskin squares is produced by measuring with the help of a planimeter a sheepskin in raw

in the finished semi-finished product, the area shrinkage is calculated by the formula

V 100

pn

where V is the magnitude of shrinkage of the floor,%;

P and P, - the area of sheepskin, respectively, in the finished semi-finished and raw materials, dm. . Water consumption per 1000 pcs. sheepskin

calculated by the formula

15

AT

. to 1000

where B is the volume of water, m;

H - the number of liquid processes

and operations; M mass of 1000 pieces, kg

The quality of the finished semi-finished product is assessed by indicators of the chemical composition and physicomechanical properties of leather and hair in accordance with GOST 4661-76, as well as the softness of the leather, hair friability and uniform distribution of chromium salts in the dermis.

The softness of the leather tissue is determined on a PZHU device, and the friability of the hair integument is determined by an organoleptic method by evaluating experts on the conventionally adopted 5-point scale: the higher the score, the higher the degree of friability of hair. The uniform distribution of chromium salts in leather is assessed by determining them by means of chemical analysis in accordance with GOST 9212-77 in three layers of the dermis: upper, middle and lower, obtained by sawing leather with a microtome.

As can be seen from the table, the processing of fur pzhur by the proposed method in comparison with the known one allows reducing the area shrinkage by 1.3-1.8% and reducing water consumption by 1000 pcs. sheepskins by 24%, increase the residual lengthening of the leather fabric and the uniformity of distribution of the tanning salts of chromium among the layers of the leather fabric.

The remaining accepted indicators of the chemical composition and physicomechanical properties of sheepskins of both methods of dressing are at the same level,

life, MPa

Not less than 9.8

14.9-15.3

Not less than 30.0

43.4-46.6

23.1-25.7 31.8 20.3-20.9 11.0 Coat

No more than 1.0

0.8-1.0

Resistance of color to dry friction on the scale of gray egos Compiler O. Maslachenko Editor M. Dypyn Tehred N. Bonkalo Proofreader, A. Ferentz

Order 2264/28 Circulation 378Subscription

VNIIPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Continued tab

15.0

15.2

15.5

44.1

30.9 13.2

46.2

33.4 12.8

0.9

1.0

1.1

Claims (2)

1. METHOD FOR PRODUCING FUR SKINS, including treating them with an aqueous composition for pickling - tanning of fatliquoring, containing table salt, acetic acid, sulfuric acid, chromium tanning agent, hyposulfite, soda ash and fat emulsion, consisting of industrial oil and premocell, spinning, squeezing plating, dyeing with acid dyes in the presence of an acid reagent, washing, drying, spinning, drying and finishing, characterized in that, in order to reduce shrinkage of skins, water consumption, improve sanitary and hygienic x working conditions and improving the quality of ’skins, after plating, they additionally process the fur skins with an aqueous composition for retanning, containing, g / l: Salt 30,0-40,0 Chrome tanning agent (in terms of chromium oxide) 2.5-3.0 Nonionic superficially active substance 0.1-0.3 Chromepeck 0.5-1, 0 7-water ethylene diaminetetraace- tato [(thiosulfato) zinc] [pectotio- supfato) zinc] pre-ammonium salt, stabil Sulfurous acid sodium 0.5-1.5 Water Up to 1 liter I 30-35 ° C 3-5 hours 2. The method according to claim 1, about t l and h; The fact that the composition for pickling, tanning, and fatliquoring contains a chrome tanning agent (in terms of chromium oxide) in an amount of 1.52.0 g / l. 3. The method of pop. 1, characterized in that during dyeing, sulfuric acid is used as the acid reagent and the process is conducted at 55-68 ° C.