METHOD FOR PRODUCING OF FILAMENTS FROM OPTICALLY ANISOTROPIC SPINNING SOLUTION AND SPINNING APPARATUS WITH AIR SLIT Russian patent published in 2007 - IPC D01D5/06 

FIELD: chemical industry, in particular, production of filaments from optically anisotropic spinning solution.

SUBSTANCE: method involves extruding spinning solution through spinneret comprising spinning zone with a plurality of spinning apertures; filaments produced are then directed into slit or diaphragm placed within coagulation bath, configuration of said bath being defined by plates with upper sides and lower sides. Upper sides of plates are determined as sides having shortest distance to spinning zone. Line passes through spinning zone center and perpendicular to upper sides, and passes at a distance from parallel line through center of slit or diaphragm. Projection of slit or diaphragm is sized and configured approximately similar to projection of spinning zone. Surface of upper side of one plate is spaced from spinning zone center by shorter distance than surface of upper side of other plate, and line is spaced from plate border by shorter distance than to the border of plate.

EFFECT: substantially reduced adverse influence of coagulation bath surface upon filaments produced.

8 cl, 6 dwg