EXTRUSION DIE AND PROCESS FOR PRODUCING AN EXTRUDED FILLED POLYMER COMPOSITION

摘要

Prepare an extruded filled polymer composite having a highly disperse and uniformly distributed filler by extruding a filled polymer composite through a die with a Flow Restriction Zone, a Flow Redistribution Zone and a Land Zone . The Flow Restriction Zone is proximate to the extruder and increases polymer melt backpressure in the extruder sufficient to induce high dispersion of th e filler but not enough to cause undesirable degradation of the polymer melt components.