Patent ID: 6558151
Filing Date: 2003-05-06
Classification: B28B

Abstract:
A honeycomb extrusion die comprising:a unitary die body having a slotted die discharge face and an opposing die body inlet face, the inlet face being provided with a plurality of body feedholes extending into the die body toward the discharge face and an intersecting array of discharge slots extending from the discharge face toward the inlet face, the feedholes extending into and terminating within the base portions of the discharge slots; a die baseplate forming a die inlet face, the inlet face comprising a plurality of baseplate feedholes extending into the baseplate; and a compound feed section positioned within or between the baseplate and the die body, the compound feed section incorporating feed conduits having (i) inlets connecting with the baseplate feedholes, (ii) outlets connecting with the body feedholes, and (iii) being angled away from the flow axes of the baseplate feedholes over at least a portion of their length; the baseplate feedholes having a diameter larger than the body feedholes, the number of body feedholes substantially exceeding the number of baseplate feedholes, and each baseplate feedhole being connected by the branching feed conduits to multiple body feedholes.