MELT-SPINNING OF THERMOPLASTIC POLYMER

摘要

PURPOSE:To prevent accumulation of foreign materials around the outlet of a nozzle hole of a spinneret and to stabilize the extrusion of molten polymer, by electrically insulating a spinneret for the extrusion of molten thermoplastic polymer from the adjacent parts and applying a DC voltage to the spinneret. CONSTITUTION:A spinneret 1 is furnished with slits or small holes for extruding a molten not thermoplastic polymer to form a fiber or film. The spinneret 1 is electrically insulated from the adjacent parts 4 and a DC voltage is applied between the spinneret 1 and the adjacent parts 4. The voltage is preferably >=500V. The insulation of the spinneret 1 is preferably carried out by using insulating sealing materials 3, 3'.