Method of finishing leather lining

 

(57) Abstract:

The method applies the finishing lining leather from raw pork. The method includes applying a pigmented primer containing a pigment concentrate, a polyurethane dispersion, a wax emulsion and water. Then carry out the pressing of the skin, repeated application of pigmented primer and application of the eye-catching cover. Spectacular floor contains aqueous nitrocellulose lacquer, pigment paste based on metal 1 side group subgroups and water. The skin is re-pressed, re-applied a spectacular floor and pressed again. The method allows to increase the quality and broaden the range of lining leather from raw pork. table 1.

The invention relates to the leather industry and can be used when finishing lining leather from raw pork.

There is a method of finishing leather lining pork raw material, which consists in the fact that after drying and humidifying operations on skin applied a composition containing, by weight. %: soap 1,5-2,0, wax emulsion 4,0-6,0 water and rest, after which the skin is polished (EN, 2107734, C1, 27.03.98, CL 14 With 11/00).

The disadvantage of this method is that it does not allow for the military technical solution is the way of finishing the lining of leather from raw pork, namely, that the skin is polished with botermans and front sides, then on the front surface, apply non-pigmented primer on boterman - glue or 3-5% solution of casein, after which the skin is pressed, cause them pigmented primer, re-pressed, causing the composition of the coating paint, fix the coating obtained and finally pressed. (Handbook of Tanner. Finish. Production control. Ed. by N. A. Babirovoy): Legprombytizdat, 1987, S. 80-82. )

The disadvantage of this method is that it allows you to get a leather lining with high performance properties and beautiful appearance.

The technical result of the invention is to improve the quality and expand the range of lining leather from raw pork.

This result is achieved by a method of finishing leather lining includes applying a pigmented primer, containing, by weight. %: pigment concentrate 4,5-5,5, polyurethane dispersion 35% 35,0-45,0, wax emulsion 20% 3,5-4,5 and water the rest, pressing skin, repeated application of pigmented substrate; applying effective coating of the following composition, wt. %: water nitrocellulose lacquer 55,0-65,0 pigment Presena effective coverings and final pressing.

Double coating of pigmented primer and eye-catching cover these compounds with intermediate pressovaniya allow you to get the lining of the skin with high performance properties and beautiful appearance.

The method is as follows.

The lining of the skin of the pork raw material obtained by the known method, after drying and humidification processes and operations unit "map" put pigmented primer that contains, wt%: pigment concentrate 4,5-5,5, polyurethane dispersion 35% 35,0 - 45,0, wax emulsion 20% 3,5 - 4,5 and water the rest. Then the skin is pressed and re-applied pigmented soil of the same composition. After that put effective coating of the following composition, wt. %: water nitrocellulose lacquer 55,0-65,0, pigment paste based on a metal of group 1 side subgroups (silver, copper, gold) 8,0 - 10,0 and water the rest, then skin pressed again, again they are effective coating of the same composition and finally pressed.

The pigmented compositions of the soil and the eye-catching cover is prepared by the sequential mixing of these components in the stated proportions.

Example 1. The lining to the elemental concentrate - 4,5, polyurethane dispersion EN 3989 35% - 35,0, wax emulsion 20% - 3.5 and water - 57,0. Then the skin is pressed and re-applied pigmented soil of the same composition. After that they are effective coating of the following composition, wt. %: water nitrocellulose lacquer Icalc W 312 - 55,0, pigment paste based on Ag 8.0 and water 37,0, re-pressed, re-applied effective coating of the same composition and finally pressed.

Example 2. The lining of the skin, derived from porcine raw materials by well-known methods, finish, as in example 1, but as pigmented soil using a composition containing, by weight. %: pigment concentrate to 5.0, polyurethane dispersion EN 3989 35% - 40,0, wax emulsion 20% - 4.0 and water - 51,0, and as eye-catching cover the following composition, wt. %: water nitrocellulose lacquer Icalc W 312 - 60,0, pigment paste based on si - 9.0 and water 31,0.

Example 3. The lining of the skin, derived from porcine raw materials by well-known methods, finish, as in example 1, but as pigmented soil using a composition containing, by weight. %: pigment concentrate 5,5, polyurethane dispersion EN 3989 35% - 45,0, wax emulsion 20% - 4.5 and water - 45,0, and as eye-catching cover the following composition, wt. %: full-time water skin, derived from porcine raw materials by well-known methods, finish, as in example 1, but as pigmented soil using a composition containing, by weight. %: pigment concentrate, 4,2, polyurethane dispersion EN 3989 35% - 32,0, wax emulsion 20% - 3.2 and water - 60,6, and as eye-catching cover the following composition, wt. %: water nitrocellulose lacquer Icalc W 312 - 52,0, pigment paste based on si - 7,7, and water - 40,3.

Example 5. The lining of the skin, derived from porcine raw materials by well-known methods, finish, as in example 1, but as pigmented soil using a composition containing, by weight. %: pigment concentrate - 5,7, polyurethane dispersion EN 3989 35% and 47.0, wax emulsion 20% - 4.7 and water - 42,6, and as eye-catching cover the following composition, wt. %: water nitrocellulose lacquer Icalc W 312 - 67,0, pigment paste based on Ag to 12.0, and the water - 21,0.

Quality indicators received lining of skin compared to skin on the prototype presented in the table. Using the proposed method allows to obtain a lining skin from pork raw materials with high performance properties and beautiful appearance.

The way of finishing the lining of the skin, consisting in applying pigme the risk emulsion (20%) 3,5-4,5 and water the rest pressing skin, repeated application of a pigmented primer, applying the effective coating of the following composition, wt. %: water nitrocellulose lacquer 55,0-65,0, pigment paste based on a metal of group 1 side subgroups 8,0-10,0 and water the rest, re-pressing, re-applying the eye-catching cover and final pressing.

 

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1 tbl, 15 ex

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1 tbl, 19 ex

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1 tbl, 6 ex

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13 cl, 1 dwg, 1 ex

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1 dwg, 1 tbl

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