Patent ID: 8945669
Filing Date: 2015-02-03
Classification: B29C,B29K,B29L,G02B,Y10T

Abstract:
1. An extrusion material supply device that heat melts a rod-like plastic material and supplies the rod-like plastic material to a metal die, the extrusion material supply device comprising: a container in which the rod-like plastic material is housed; a heat melting unit that is provided on a downstream side of the container and heat melts a lower end portion of the rod-like plastic material; heating means for heating the heat melting unit; and gas pressurizing means for sequentially supplying molten plastics to the metal die by a gas pressure, wherein a cross-sectional area of an inner circumferential surface of the heat melting unit is larger than a cross sectional area of an inner circumferential surface of an upstream side of the container, and a difference between the cross-sectional area of the inner circumferential surface of the heat melting unit and the cross-sectional area of the rod-like plastic material is 200 to 2000 mm