Patent ID: 7524448
Filing Date: 2009-04-28
Classification: B28B,B29C,B29L

Abstract:
1. A method of manufacturing a honeycomb structure with an outer skin, the method comprising: extruding plasticized batch material through a die apparatus comprised of an extrusion die, a mask, and a shim, the extrusion die having an inlet face and an outlet face, the outlet face comprising an outer skin-forming region and an inner region, the mask being disposed proximate the outer skin-forming region of the outlet face of the die, the shim being disposed between the outlet face of the die and the mask, thereby spacing the mask away from the die, the mask and the outlet face of the die defining a skin-forming gap therebetween, the outlet face comprising a plurality of pins spaced apart by a plurality of discharge slots, the inlet face comprising a plurality of feedholes in communication with the plurality of discharge slots, the inlet face comprising a non-recessed surface and a recessed surface, wherein at least one feedhole in the recessed surface is in communication with at least one discharge slot that terminates in the skin-forming gap or with at least one discharge slot that is disposed directly adjacent to the skin-forming gap.