Patent ID: 6616015
Filing Date: 2003-09-09
Classification: B29C,B29L,Y10S,Y10T

Abstract:
A system for pressure molding plastic material, comprising:a source of hot flowable plastic material; a manifold for receiving hot flowable plastic material from said source and for transporting the hot flowable plastic material; a nozzle cavity that is defined by at least one wall; a nozzle disposed within said nozzle cavity, said nozzle being operatively in communication with said manifold for receiving hot flowable plastic material therefrom; a heater for heating said nozzle, said heater being positioned outside of said nozzle cavity and having at least one electrical supply wire; a shut-off seal positioned within said nozzle cavity to seal said nozzle with respect to said wall defining said shut-off cavity; and a secondary seal positioned between said shut-off seal and said heater for ensuring that any hot flowable plastic material that might leak through said shut-off seal does not come into contact with said electrical supply wire.