CROSSLINKED POLYMERIC MATERIAL WITH ENHANCED STRENGTH AND PROCESS FOR MANUFACTURING

摘要

A method of extruding a rod like bulk material comprising a first polymeric material through a reducing die by ram extrusion, comprises: placing the bulk material and a sacrificial puck in a deformation chamber; advancing a ram to push on the sacrificial puck, which in turn pushes on the bulk material; continuing to advance the ram until the bulk material has exited through the reducing die but the sacrificial puck occupies the reducing die; and retracting the ram whereupon the sacrificial puck extricates itself from the reducing die, wherein the sacrificial puck is made of a crosslinked second polymeric material.