Patent ID: 8080197

Claim:
A method for manufacturing filaments from an optically anisotropic spinning solution comprising extruding the spinning solution through a spinneret comprising a spinning field with a plurality of spinning orifices into a coagulation bath through a slot or diaphragm, the edges of the slot or diaphragm being formed by plates with upper sides and lower sides, the upper side of each plate being defined as the side having the shortest distance to the spinning field, wherein a line through the center of the spinning field and perpendicular to the upper sides is located at a distance (d) from a parallel line through the center of the slot or diaphragm, wherein the slot or diaphragm has substantially the same size and shape as the spinning field, and wherein the plane of the upper side of one of the plates has a shorter distance to the center of the spinning field than the plane of the upper side of the other of the plates, and the line through the center of the spinning field has a smaller distance to the edge of one of the plates than to the edge of the other of the plates, and wherein the slot or diaphragm is positioned at the bottom of the coagulation bath.