METHOD FOR OBTAINING FILAMENTS FROM OPTICALLY ANISOTROPIC SPINNING SOLUTION Russian patent published in 1999 - IPC

FIELD: production of specific filaments. SUBSTANCE: method involves extruding spinning solution through spinning openings concentrated in at least one spinning section; directing extrudates in succession through inert gas and coagulating bath. Ratio of spinning opening spacing to spinning section width is in the excess of 0.15 and below 0.7. Width of spinning section is less than 5 mm. Method allows filaments with good physical characteristics and free from spread blocking to be produced. EFFECT: increased efficiency by increased spinning speed and improved physical qualities of filaments by reduced concentration of acid in coagulant and absence of blocked parts. 7 cl, 4 dwg, 1 tbl, 1 ex