Patent ID: 6117378
Filing Date: 2000-09-12
Classification: D01F,D04H

Abstract:
A process for the production of cellulose fibers comprising:dissolving a cellulose-containing material in an aqueous, tertiary amine-oxide to obtain a spinnable cellulose solution;spinning said cellulose solution into filaments and passing the filaments through an aqueous precipitation bath to obtain water-containing, swollen filaments;squeezing said water-containing swollen filaments at an average of at least two squeezing points per millimeter of filament length on anddrying said squeezed filaments to cellulose fibers,said squeezing being carried out by applying a pressure high enough to preserve said squeezing points on the dried fibre, said squeezing points being observable as color variations when said dried fibre is exposed to linearly polarized light.