Procedure for the manufacture of a flat filament of polyacrilonitril (Machine-translation by Google Translate, not legally binding)

摘要

Process for manufacturing a polyacrylonitrile crimpable filament, characterized in that it comprises ejecting a polyacrylonitrile solution through the orifice of a die that imposes an asymmetric velocity profile in the liquid inside a coagulant; the asymmetric velocity profile produces two collateral zones in the filament solution, which are subjected to different extrusion ratios; the zones subsist in the coagulated filament, in the form of zones of different degrees of orientation. (Machine-translation by Google Translate, not legally binding)