Patent ID: 8684719
Filing Date: 2014-04-01
Classification: B29C,B29L

Abstract:
1. Die tooling for controlling the distribution of molten plastic between a die head and an extrusion outlet for forming continuous tubular plastic product, said die tooling comprising a die body having a series of drill hole passages through said die body with said series of drill hole passages extending in a length of said die tooling with spaced inlets to said drill hole passages at said die head for receiving molten plastic under pressure; said spaced inlets being positioned in a circular manner about a longitudinal axis of said die head; said drill hole passages forming a predetermined pattern of passage outlets arranged in a non-circular manner adjacent and upstream of said extrusion outlet; said extrusion outlet being defined between an interior wall and an exterior wall for extruding molten plastic forming said tubular plastic product; said extrusion outlet in cross section defining an elongate section having a generally straight base portion, and curved end portions interconnected by a curved top portion; said non-circular pattern of passage outlets being positioned at an upstream end of said extrusion outlet and spaced about said elongate section.