METHOD OF VELOUR PRODUCTION FROM THE SPLIT Russian patent published in 1995 - IPC

FIELD: leather industry. SUBSTANCE: depilated hide flesh side of hide split is pickled with sulfuric acid, sodium chloride and ammonium sulfate at their consumption, 0.2-0.3; 1.5-2.5 and 3.5-4.5 of hide mass, respectively, following by tanning, shaving, additional tanning with chromed and synthetic tanning agents, neutralization, greasing in the presence of sodium hydrocarbonate and ammonium aqueous solution at their consumption 1.5-2.0% and 1.0-1.5% respectively, of shaved split following by drying, polishing, soaking, staining, greasing, treatment with acetic acid for two stages with intermediate washing and the terminal finishing. EFFECT: improved method of velour production. 1 tbl