METHOD FOR MANUFACTURE OF FUR SKINS Russian patent published in 2016 - IPC C14C1/04 C14C1/08 C14B15/00 

FIELD: technological processes; fur production.

SUBSTANCE: invention can be used in processing of ship-fur and down and fur, primarily beaver hides. Fur stock is subjected to soaking, wet crushing, fleshing, degreasing, washing, stepped pickling, tanning, drying, breaking down, greasing, ageing, crushing, haulage, drying, grinding. Pickling and tanning of fur stock is carried out in an aqueous solution containing silver and copper citrate. Silver and copper content is 225-275 mg/dm³, and solution is used in concentration of 8-12 ml/l. Proposed method increases ultimate tensile strength of leather fabric under tension by 3.5 %, elongation at break by 8 % and elongation at load of 9.8 MPa by 16 % on average, which increases utilisation of this type of fur and improves shaping of designed furs.

EFFECT: method provides prolonged storage of fur semi-finished product in medium of contaminated by microorganisms and mold, and use of silver and copper citrate during dressing has decontamination action on waste water, which improves environmental safety of process.

1 cl, 4 tbl