SCREW FOR THERMOPLASTIC RESIN UNIAXIAL AND CONCENTRIC MULTI-AXIAL EXTRUDER

摘要

PURPOSE:To realize the title screw capable of easily controlling extrusion capacity by the combination constitution of elements. CONSTITUTION:A shaft 3 having a flight 1 at one end thereof and having a longitudinal outer key groove 2 is provided and a proper number of elements 6 each having a flight 1 on its outer periphery and an inner key groove on its inner periphery are provided to be arranged to a stepped shaft so as to be detachable by a key 8.