Patent ID: 7175416
Filing Date: 2007-02-13
Classification: B29C

Abstract:
1. A nozzle for injection molding, comprising: a thermally conductive nozzle body defining an internal passage for conveying a flow of heated melt through the nozzle body, wherein the internal passage extends axially along the nozzle body to an axially placed cylindrical hub of a diameter less than a diameter of the nozzle body; a tubular extension from the cylindrical hub, the tubular extension having a wall thickness less than a wall thickness of the cylindrical hub; a nozzle tip on an end of the nozzle body, communicating with the internal passage, wherein the nozzle tip is structured for engagement with a mold for coupling the passage to an injection inlet; and, wherein a heat flow blocking configuration is disposed between an extreme end of the nozzle tip and a point of the internal passage spaced back from the nozzle tip.