METHOD OF PROCESSING NATURAL LEATHER WITH GRAIN BREAKS Russian patent published in 2012 - IPC C14C11/00 

FIELD: process engineering.

SUBSTANCE: proposed method comprises subjecting natural leather to low-temperature plasma of high-frequency induction discharge for 30-120 seconds at discharge chamber pressure of 40-60 Pa at flow rate of plasma-forming argon of 0.04-0.08 g/s at current of 0.3-0.9 A. Then, it is subjected to low-temperature plasma of high-frequency induction discharge for 60-600 seconds at discharge chamber pressure of 13.3-26.6 Pa at flow rate of plasma-forming argon of 0.02-0.06 g/s at current of 0.3-0.7 A and voltage of 1.3-3.0 kV.

EFFECT: ruled out grain breaks.

2 dwg, 1 tbl, 3 ex