Patent ID: 6261075
Filing Date: 2001-07-17
Classification: B29C

Abstract:
An injection molding apparatus for use in coinjection comprising:a valve pin actuator that supports a valve pin adapted to control skin material flow and core material flow into a mold cavity; andan injection molding nozzle to inject skin and core material into the mold cavity, wherein the valve pin reciprocates through the injection molding nozzle, the injection molding nozzle including:a nozzle body;an insert coupled to an end of the nozzle body, said insert including a bore in communication with a first bore of the nozzle body through which said core material is adapted to flow, and an annular spiral indentation formed on a surface of the insert about which the skin material is adapted to flow, said skin material to be fed into said spiral indentation from a second bore of the nozzle body through which said skin material is adapted to flow.