Patent ID: 6991450

Claim:
A honeycomb extrusion die comprising: a die body section having a die inlet face and a parallel array of open-ended extrudate feed channels extending from the inlet face toward a honeycomb forming section, the honeycomb forming section being spaced from the inlet face and terminating at a die outlet face; the die outlet face incorporating a criss-crossing array of open discharge slots extending inwardly into the honeycomb forming section toward the feed channels, said slots terminating at slot base ends disposed within the honeycomb forming section and defining an array of channel-forming pins terminating at the die outlet face; extrudate distribution means disposed within each of the extrudate feed channels for guiding extrudable material toward the slot base ends, said distribution means comprising one or more inverted conical or pyramidal flow dividers with apexes extending inwardly from the pins toward the feed channels, the flow dividers including flow-guiding surfaces inclined toward the feed channels that have base edges terminating at the base ends of the discharge slots; the average cross-sectional area of the extrudate feed channels being in excess of twice the average cross-sectional area of the channel-forming pins defined by the discharge slots.