METHOD FOR PRODUCING FILAMENTS OF POLYACRYLONITRILE AND EXTRUSION HEAD FOR CARRYING OUT SAID METHOD

摘要

The invention relates to a method for producing filaments of polyacrylonitrile and to an extrusion head for carrying out said method, said method comprising preparing a polyacrylonitrile polymer solution and passing said solution through an extruder plate (9) that determines the formation of filaments, a central chamber (14) being defined between the extruder plate (9) and a floating plate (15) connected to a vibrating system (17), said chamber being surrounded by a peripheral chamber (12) into which the polymer solution is introduced under pressure. The polymer solution then passes through to the central chamber (14) via small radial conduits (13) that accelerate the material, and is subjected to a vibration in said central chamber (14) before passing through the extruder plate (9).