Extrusion die for ceramic honeycomb structures

Details Extrusion die for ceramic honeycomb structures Extrusion die for ceramic honeycomb structures

1977-12-13

1979-12-11

Rosenbaum, Mark

Plastic article or earthenware shaping or treating: apparatus

With upstream screen or perforated plate for straining,...

Plural screens or plates

425380, 425467, B29F 304

Patent

active

041781457

ABSTRACT:
An extrusion die for forming thin-walled honeycomb structures is provided comprising a plurality of discharge slots for forming unit cells of a predetermined web thickness formed transversely in the die to a predetermined depth in the outlet face and a plurality of mutually independent feed passageways formed transversely in the die extending from the inlet face of the die and communicating with the discharge slots. The cross-sectional area of the feed passageways is larger than the cross-sectional area of the discharge slots which are fed by the feed passageway, thereby applying sufficient flow resistance to the extrudable material and the discharge slot.

REFERENCES:
patent: 2908037 (1959-10-01), Harkenrider
patent: 3836302 (1974-09-01), Kaukeinen
patent: 3888963 (1975-06-01), Orso et al.
patent: 3905743 (1975-09-01), Bagley
patent: 4008033 (1977-02-01), Folmar et al.

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