The way we produce hydrophobic skin

 

(57) Abstract:

The inventive wet-blue doublenaut chrome tanning agent, neutralizing the treated after retanning tub, paint doublenaut synthetic tanning agent based resins at its expense 4 5% by weight of shaved leather for 30 to 40 minutes, doublenaut organic tanning agent, conduct gidrofobiziruyuschey greasing and processing of organic acid, re-doublenaut chrome tanning agent and dried. Spend three Taiko with intermediate podarkami and fourth Taiko. Put a layer of contrasting coating spend fixing and pressing. table 1.

The invention relates to chemical treatment of skins, in particular to methods for production of special kinds of skin and can be used in the formulation of hydrophobic elastic leathers for the uppers.

A known way of generating elastic skin, comprising: soaking off, liming, glutton liming at the rate of hydrate of calcium oxide 0.3 to 0.5% by weight of the hide, obessolivanie, abating at a flow rate of protocolin of 0.5-0.6% by weight of the hide, pickling, tanning, shaving, tanning retanning of chromium compounds, neutralizing formate and sodium bicarbonate in prisutstvovala synthetic tanning agent, dyeing, the first phase of fatliquoring, the second phase of fatliquoring, retanning organic tanning agent, drying and finishing by two serious breakdown in the drum within 4-6 h, double coating layers coating paint with intermediate pressing and double fastening with intermediate second pressing [1]

The prototype of the proposed technical solution is the way we produce elastic skin, including retanning chrome tanning agent, washing, neutralization, dyeing, retanning organic tanning agent, greasing, processing organic acid, re-retanning chrome tanning agent, drying, triple Taiko with intermediate podarkami, a breakdown in the drum within 6-10 h, applying a layer of non-pigmented primer, two coats of finishing paint with intermediate pressing, applying a layer of a contrasting coating, the second pressing and pinning [2]

A disadvantage of known methods is that they do not provide a hydrophobic elastic skin with a high resistance coating to repeated bending and wet friction.

The objective of the invention is to improve the quality of the leather.

The problem is solved in that ,, retanning organic tanning agent, gidrofobiziruyuschey greasing, processing organic acid, re-retanning chrome tanning agent, drying, triple Taiko with intermediate podarkami, a breakdown in the drum, double layers coating paint with intermediate pressing, applying a layer of a contrasting coating, the second pressing and fixing, the neutralization of the produced waste after retanning chrome tanning agent bath, after dyeing is conducted additionally retanning synthetic tanning agent based resins when the flow rate of 4-5% by weight of shaved leather for 30-40 min, after the third grave additionally produce a fourth Taiko, and the second pressing is carried out after the fixing.

A distinctive feature of the proposed method is that neutralised to waste after chrome retanning tub, additional retanning leather synthetic tanning agent based resins after dyeing, an additional fourth grave and the second pressing after fixing allows you to get supple leather for the uppers with a high resistance coating to repeated bending and wet friction.

Processing the th outer surface and uniform properties in all topographical areas. An additional retanning leather synthetic tanning agent based resins over 40 min at a flow rate of more than 5% can lead to stiffening of the skin.

The technology of the method is as follows:

Leather for Shoe upper, obtained by standard methods from raw cattle, doublenaut chrome tanning agent for 60-90 min and neutralized with formate and sodium bicarbonate on waste after retanning tub. After washing at a temperature 45-46aboutTo carry out the dyeing at W.to. 1,0-1,2 and temperature 45-46aboutC for 30-40 minutes Consumption of dyes 1.0 to 1.5% by weight of shaved leather. Then in the same tub skin doublenaut during the first 30-40 minutes of the synthetic tanning agent based resins when the flow rate of 4-5% by weight of shaved leather, and then for 30-40 min with a mixture of organic tannins. Then in the same bath add 80% of water at a temperature of 70-75aboutWith and carry out greasing in the presence of water-repellent material within 60-90 minutes of the Consumption of fattening materials 3-4% hydrophobic 7-8% by weight of shaved leather. Then in the same bath add organic acid in a quantity of 0.3-0.4% and processing are within 20-25 minutes After that make retanning chrome Dubna dryer to a moisture content of 35-40% dry in a free state to a moisture content of 30-35% is subjected to a threefold taike with intermediate podarkami, additional fourth taike, the breakdown in the drum for 4-16 h, drying in the dryer frame and finish by double coating layer coating paint with intermediate pressing, applying a layer of a contrast coating, fixing and pressing.

Examples of specific performance.

P R I m e R 1. Leather for Shoe upper, obtained by standard methods from raw materials byczyna easy, after shaving and rinsing doubleval chrome tanning agent at the rate of 5% by weight of shaved leather for 90 min and neutralized to waste after retanning tub of 1% sodium formate for 30 min, and then 1.5% of sodium bicarbonate is also within 30 minutes After washing at a temperature of 45aboutWith skin applied for dyeing for 30 min at W. K. 1 and a temperature of 45aboutC. Consumption of dyes and 1.0% by weight of shaved leather. Then in the same tub conducted retanning tanning agent Relugan RE for 40 min when the flow rate of 4% by weight of shaved leather, and then for 30 min with a mixture of tannins BNS 5%, quebracho 2% by weight of shaved leather. Then the drum was added 80% water temperature 75aboutWith and produced greasing for 60 min with a mixture of paste VNIIG 3% and hydrophobe And 8% by weight of shaved leather. Then the same is ri temperature of 20aboutC, was subjected to aging, extraction, distribution, drying in a vacuum dryer, in a free state, the three taike with intermediate podarkami, fourth taike, the breakdown in the drum and drying in the dryer frame for 16 minutes Then the leather was applied the finishing of the following composition, wt.h. the pigment concentrate of 37.5, Rubber 3925 50, Filler R 1261-15, emulsion of BMP-3 (40%) 25 water 75, extruded, again put the finishing specified composition, contrast coating, hardener, containing, by weight.h. microemulsions lacquer 5183 500, butyl acetate 500, xeroderm SA 43059 100 and extruded a second time to pass the press "famosa".

P R I m m e R 2. Leather for Shoe upper, obtained by standard methods from raw materials byczyna heavy, was treated as in example 1, but after dyeing them in addition doubleval for 35 min tanning agent DDM-2C in the amount of 4.5% by weight of shaved leather.

P R I m e R 3. Leather for Shoe upper, obtained from the raw material heavy bull by standard methods, were processed as in example 1, but after dyeing them in addition doubleval for 30 min Relugan RE in an amount of 5% by weight of shaved leather.

P R I m e R 4. Leather for Shoe upper, obtained by standard methods from raw materials byczyna easy, processed, from the weight of shaved leather.

P R I m e R 5. Leather for Shoe upper, obtained by standard methods from raw materials byczyna light, was treated as in example 1, but after dyeing them in addition doubleval for 50 min Relugan RE in the amount of 3% by weight of shaved leather.

As a result of all five examples were obtained finished leather, which had the figures shown in the table.

Using the proposed method allows to obtain hydrophobic elastic leather for the uppers with a high resistance coating to repeated bending and wet friction.

The WAY we PRODUCE HYDROPHOBIC SKIN, including retanning their chrome tanning agent, neutralization, dyeing, retanning organic tanning agent, gidrofobiziruyuschey greasing, processing organic acid, re-retanning chrome tanning agent, drying, triple Taiko with intermediate podarkami, a breakdown in the drum, double layers coating paint with intermediate pressing, applying a layer of a contrasting coating, the second pressing and fixing, characterized in that the neutralization of the produced waste after retanning chrome tanning agent bath, after dyeing is conducted additionally retanning of La grave additionally produce a fourth Taiko, and the second pressing is carried out after the fixing.

 

Same patents:

The invention relates to chemical treatment of skins, in particular to the manufacture of special types of leather, and can be used in making leather for Shoe uppers from leather obtained from raw cattle

The invention relates to chemical treatment of skins, in particular, to methods for production of special kinds of skin and can be used in making leather for garment

The invention relates to a method of chemical treatment of skins, in particular to the pickling and tanning with chromium compounds, and can be used in the production of leather from batamaloo Spilka

The invention relates to chemical treatment of skins, in particular to the manufacture of special types of leather, and can be used in making leather for Shoe uppers from leather obtained from raw cattle

The invention relates to chemical treatment of skins, in particular, to methods for production of special kinds of skin and can be used in making leather for garment

The invention relates to the leather industry, as it includes the composition of the waste of skin and a crosslinking agent to obtain a sheet kriostrukturirovaniya leather imitation material collagen type, which can be used in the footwear, leather industry, as well as for the walls, such as the cabin of a vehicle

The invention relates to the manufacturing industry and can be used in tanneries for the production of leather from the skins of a variety of fish (dried, smoked) for the production of fancy goods, shoes, clothing, industrial goods and so on
The invention relates to methods of producing high molecular weight products from collagen containing materials and can be used in light industry in the manufacture of leather imitation material used for the manufacture of leather goods and shoes, and in the manufacture of finishing material used in construction, transport, furniture production

The invention relates to methods of making collagen containing material, namely manufacturing technology leather imitation material from tannery wastes by cryogenic impact made on their basis collagen mixture

The invention relates to chemical treatment of skins, in particular to the manufacture of special types of leather, and can be used in making leather for Shoe uppers from leather obtained from raw cattle

The invention relates to chemical treatment of skins, in particular, to methods for production of special kinds of skin and can be used in making leather for garment

The invention relates to the production of synthetic wax emulsions and can be used to finish the surface of the skin

The invention relates to chemical treatment of skins, in particular for finishing the surface of the skin, and can be used for covering the dyeing of natural leather for Shoe upper

Method of finishing // 2017825

FIELD: leather industry.

SUBSTANCE: semifinished product is degreased, neutralized, dyed, and lubricated. Dyeing is performed in two washing-interrupted steps with anionic black dye consumed in amount 0.5-0.6% of the weight of semifinished product in each dyeing step. Lubrication is followed by retannage with chrome tanner in amount 0.6-1.0% of the weight of semifinished product (calculated for chromium oxide) and treatment with 0.8-1.0% of spindle oil.

EFFECT: achieved deep black color and high performance characteristics.

1 tbl, 5 ex

FIELD: light industry.

SUBSTANCE: powdered thermoplastic polyurethane with reduced melting point is applied on fur article parts in most wear place, said polyurethane being prepared from 4,4-diphenylmethanediisocyanate, poly(butylene glycol adipate) and 1,4-butanediol serving as chain extension agent. Thus treated part is then pressed at 64-75°C and remained to lie.

EFFECT: improved quality of fur articles due to increased hair-to-skin tissue binding strength, resistance of hair coat against wear, and increased lifetime of clothes.

FIELD: leather industry.

SUBSTANCE: invention relates to finishing of various-destination leathers made from various types of raw skins and consists in consecutively applying layers of soaking ground, covering paint, and fixing agent. After applying each layer, leather is dried for 5 to 50 sec in microwave fields at field intensity 10000-15000 v/m and power 300-3500 W.

EFFECT: expanded technological possibilities and improved quality of coating.

1 tbl, 5 ex

FIELD: tanning industry.

SUBSTANCE: process is conducted in vertical mill to which soot, induline, kerosene and diesel fuel are introduced. Then components are mixed and slow heating the apparatus and its content is started after which mixing is switched off and slow heating of mill content is continued. Upon expiration of said time, acids or their compositions, white spirit and fatty additive are introduced and chemical mass-exchange process is performed at spontaneously fixed temperature due to thermal effects of this process and natural cooling at the beginning and at the end, as well as due to forced cooling at intermediate stage characterized by high rates of temperature at maximum of 140-150°C. At the moment when forced cooling is discontinued, 0.5-1.5 h before discontinuation of mixing and beginning of withdrawal at temperature of 80-115°C, 43-52-% solution of aluminum salts and C10-C20 of carboxylic acids is introduced into product being prepared.

EFFECT: facilitated procedure; increased amount of product.

1 tbl, 15 ex

Up!