FIELD: cellulose industry. SUBSTANCE: invention relates to cellulose formate fibers and fibers from cellulose restored from its formate, which are manufactured from solutions of cellulose formate liquid crystals, in particular from high-concentration polymer solutions. Manufacture process involves dry-wet spinning of liquid crystal cellulose formate solution into (at least) phosphoric acid, wherein water is used as coagulator. Fiber is characterized by a strong rupture elongation and is distinguished by following properties. Observed under optical polarization microscope, filaments of resulting fiber have ribbon structure indicative of liquid crystal origin; fiber has degree of cellulose substitution by formate groups ≥ 2%, rupture elongation ≥ 8%, malleability <45 cN/tex, initial module >500 cN/tex, and rupture energy >10 J/g. Fiber manufactured from restored cellulose also has high rupture elongation value and substitution degree 0-2%. Said fiber is obtained by passing formate fiber through restoration means, washing, and drying at inlet and outlet tension for each means below 5 cN/tex. EFFECT: simplified process allowing manufacturing fibers with elevated rupture elongation and mechanical characteristics suitable for textile products. 13 cl, 3 tbl, 43 ex
