Patent ID: 6782592
Filing Date: 2004-08-31
Classification: B29C,B29L,Y10S,Y10T

Abstract:
A method of retrofitting a pressure molding system of the type that includes a nozzle cavity having a nozzle disposed therein that is constructed and arranged to receive hot flowable plastic material from a source thereof, a heater for heating the nozzle that is positioned outside of, but close to, the nozzle cavity, and includes an electrical supply wire, and a shut-off seal positioned within the nozzle cavity to seal the nozzle with respect to the wall defining the shut-off cavity, comprising steps of:(a) gaining access to an area within the pressure molding system that is between the shut-off seal and the electrical supply wire; and (b) installing a secondary seal in the area between the shut-off seal and the electrical supply wire to ensure that any hot flowable plastic material that might leak through the shut-off seal does not come into contact with the heater.