Patent ID: 6343923
Filing Date: 2002-02-05
Classification: B28B,B29C,B29L

Abstract:
A cellular extrusion die for forming a cellular honeycomb structure having one or more finned protrusions extending from a plurality of cell walls, said die comprising:a substantial flat inlet face and a substantially flat outlet face that is opposite to said inlet face; an array of independent feed channels originating from said inlet face, each of said feed channel terminating in a feed channels outlet end within said die; an array of intersecting pairs of primary outlet slots, a slot inlet end of each of said primary outlet slots cutting a groove through said feed channel outlet end of each of said feed channels, a slot outlet end of each of said primary outlet slots terminating at said outlet face; an array of intersecting pairs of secondary outlet slots that bisect each of said array of intersecting pairs of primary outlet slots, each of said secondary outlet slots originating within said die and terminating at said outlet face; and one or more cross-shaped insert members fixed securely to one or more slot intersections of said intersecting pairs of secondary outlet slots at said outlet face of said die, each of said one or more slot intersections not being in direct communication with any of said feed channels.