KR20040033520A - Manufacture method of a fullgrain leather processing water repellent - Google Patents

Abstract

PURPOSE: A method for preparing water repellent finish FG leather is provided, to obtain an FG leather having a firm dye layer and good flexibility and ventilation. CONSTITUTION: The method comprises the steps of printing a dye ink on the surface of leather by pad dyeing, screen printing or brush coating; drying it naturally; treating the dried one with the steam of about 94 deg.C for about 60 min; washing and drying the steam-treated one; and performing water repellent finish of the dried one, wherein the dye ink comprises an acidic dye, a sodium alginate thickener, formic acid, a balance, a solvent as a dispersant, oleic acid as a penetrating agent and liquid ammonia as a fixing agent. Preferably the water repellent finish is carried out by using a water repellent prepared from fluorocarbon resin and methylene chloride.

Description

Manufacturing method of a fullgrain leather processing water repellent}

The present invention relates to a method of manufacturing water-repellent fuji leather paper, the dyeing is dyed the surface layer of the leather by padding, screen printing or brush, application method, but the dyeing ink penetrates and fixed to the surface layer of the leather Good flexibility and breathability, the purpose is to provide a black or speckled cross section dyed fuji leather paper, especially in the manufacture of shoes (shoes, boots, combat boots, etc.).

In general, when the leather is subjected to a water-repellent treatment, the life is extended, and when the shoes are worn for a long time, the safety of the feet as well as the sweat is excellent and the wear feeling is excellent.

On the other hand, leather paper used for shoes is leather paper that has been dyed by the deposition method due to staining of colored dyes when it comes in contact with water (when rained or immersed in water) and contaminates the feet or is not discolored or breathable. Rather, it is a high preference of single-sided dyed leather paper dyed only the surface.

In the manufacturing process of the conventional single-sided dyed leather paper, there were cases in which a dyed ink based on Indalka was screen printed on the leather surface.

The conventional dyed ink containing indalka does not penetrate the leather surface due to the rubber component contained in the indcar, and it exists as a thick ink layer. Therefore, the softness and breathability of the leather are poor. In addition, there is a problem that the dyeing layer and the leather surface are not firmly bonded and the dyeing layer is damaged by fading or leaving due to external friction when worn.

In the present invention, in order to solve the conventional problems as described above, as a result of using a dyeing ink based on soda alginate paste without rubber components, the dyeing ink penetrates well into the leather surface layer, and the dyeing layer is firm and the color is clear. Its excellent flexibility and breathability make it suitable for use in shoes (military shoes, hiking boots, combat shoes, etc.).

The present invention is described in detail as follows.

In the manufacture of single-side dyeing leather paper by dyeing the dyeing ink by padding, screen printing or brush coating on the surface of the leather paper, the dyeing ink is mixed with an acid dye in sodium alginate thickener according to the color concentration. Forming ink by mixing formic acid and plasticizer in liquid, dispersant Solvent and disperse dye to evenly disperse dye, and penetrant Oleic acid penetrating dye into leather surface ) And dyeing dye by mixing ammonia water (Agueous Ammonia) as a fixing agent for fixing that the dye penetrates the surface layer and dyes it.

After dyeing, it is dried naturally and treated for about 60 minutes with steam at 94 degrees, washed with water, dried, and then applied with a special water repellent prepared by Fluoro Carbon Resin and Methylene Chloride on the surface. To finish single-sided dyed leather paper.

In the practice of the present invention, when performing a gloss treatment, a binder, ammonia, and silicon are mixed firstly with a gloss prepared by mixing, and a secondary general leather varnish is coated.

Hereinafter, the present invention is as follows.

{Example}

Sodium Alginate Thickener 500% by weight

Solvent 50% by weight

50% by weight of oleic acid

50% by weight of formic acid

Agueous Ammonia 60% by weight

12% by weight of black acid dye (Dye)

7% by weight of acetic acid

The dyeing ink prepared as described above was dyed by screen printing on the surface of the leather paper and dried naturally, and then aged for 60 minutes with steam at 94 degrees. The aged dyed leather paper was washed with water, dried, and then water-repelled with a water-repellent water-repellent agent prepared with fluorine resin and methylene chromide to produce black single-sided dye or stained FG (Full Grain) leather.

The cross-sectional dyed water-repellent f-fur leather paper prepared as described above is coated with a binder, ammonia, and silicone, mixed with a first gloss agent, and a second general coating agent is used.

The cross-sectional dyed water-repellent processed FRP leather produced by the method of the present invention is well penetrated and fixed to the leather surface by using a dye-free ink composed of a rubber-free sodium alginate paste, a dispersant solvent, a penetrant ore acid, and ammonia fixing agent. The dyeing layer is solid, the color is clear, and the flexibility and breathability are excellent for use in shoes (military shoes, hiking boots, combat shoes, etc.), and when wearing shoes, it is hygienic because of sweating or odor accumulation due to ventilation. Can be worn as an effect.

Claims (3)

In the production of water-repellent f-leather paper by printing the dyeing ink on the surface of the paper by padding, screen printing or brush coating, The dyeing ink is a dispersing agent which forms a dyeing ink by mixing formic acid and a plasticizer in a solution in which an acid dye is mixed with sodium alginate thickener according to the color concentration. Penetrating agent that penetrates solvent and dye into leather surface Oleic acid and dyeing paste mixed with fixing agent Agueous Ammonia to fix dye penetrate into surface layer After the aging treatment for about 60 minutes with steam of about 94 degrees, washed with water, dried and then water-repellent treatment method for producing water-repellent fuji leather paper. The method of claim 1, wherein the water-repellent treatment is water-repellent treated with a special water-repellent agent prepared from Fluoro Carbon Resin and Methylene Chloride. The method of claim 1, wherein a gloss agent prepared by mixing a binder, ammonia, and silicon on a surface of the water repellent is coated.