Patent ID: 6447279
Filing Date: 2002-09-10
Classification: B29C,B29L

Abstract:
An extrusion die assembly comprising a die body, a die element and a tip member which cooperate to form a passage for extruding plastic, wherein at least one of said die element and tip member is rotatably mounted on the die body, said at least one rotatable mounted element or member forming an interface with the die body, said assembly including an apparatus for supporting said at least one rotatably mounted element or member on said die body, said apparatus comprising:a closed oil bath including multiple bearing compartments and a chamber having oil contained therein, said chamber extending in a substantially annular configuration at the periphery of the die element or tip member, and said chamber having means, mounted on the die element or tip member for circulating the oil within said bath; and a combination of radial and thrust bearings mounted in said bearing compartments to support said die element or tip member for rotation.