LYOCELL MATERIAL FOR TOBACCO FILTER AND METHOD OF ITS PREPARING Russian patent published in 2017 - IPC A24D3/06 D01D5/06 D02G1/16 

FIELD: tobacco industry.

SUBSTANCE: invention relates to a method of producing a lyocell material for a cigarette filter, including: spinning a lyocell spinning solution containing cellulose pulp and the aqueous solution of N-methylmorpholin-N-oxide (NMMO) (S1); coagulating the lyocell spinning solution spun at stage (S1) to obtain lyocell multifilament threads (S2); washing the lyocell multifilament threads obtained at stage (S2)-(S3) with water; oil treatment of the lyocell multifilament threads washed with water at stage (S3)-(S4); and corrugating the lyocell multifilament threads treated with oil at stage (S4), with obtaining a corrugated tow (S5), the cellulose pulp containing from 85 wt % to 97 wt % of alpha-cellulose and having a polymerisation degree (DPw) from 600 to 1700.

EFFECT: biodegradable and environmentally friendly material.

11 cl, 1 tbl