Extruder screw with channel

摘要

An extruder apparatus comprising a cylindrical barrel (20) having a feed end and a discharge end is disclosed. The feed end has an outlet in fluid communication with a feed device (23). The extruder apparatus further comprises an extruder screw (12) mounted in the cylindrical barrel (20), said screw (12) having an outer surface having one or more helical flights (30, 32) mounted thereon. The screw (12) further has a discharge end and a terminal end (21) and comprises at least one notch or channel (70).