PAN DRY SPINNING METHOD FROM DMAC SOLUTION INCREASING SPINNING CELL PRODUCTION BY USING SUPERHEATED STEAM

摘要

PURPOSE: To increase a spinning cell-producing amount by using a superheated steam in a dry spinning of PAN from a DMAC solution. CONSTITUTION: This PAN filament especially having =85 wt.% of acrylonitrile in a PAN (co)polymer is dry spun from a dimethylacetamide solution containing a synthetic polymer in a high spinning cell-producing amount of at least 20 Kg of a PAN solid per a spinning cell per hour by using a superheated steam as a cell gas and an inside cell treatment by using water or an aqueous controlling agent.