Die for extruding ceramic honeycomb structural bodies

Details Die for extruding ceramic honeycomb structural bodies Die for extruding ceramic honeycomb structural bodies

1986-02-24

1987-08-18

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

Single inlet, plural shaping orifices

26417712, 425467, B29C 4712

Patent

active

046874330

ABSTRACT:
A die for extruding honeycomb structural bodies includes a plurality of ceramic batch exhaust grooves and a plurality of ceramic batch supply apertures. Tubes are fitted in at least some of the ceramic batch supply apertures to improve or make constant the surface roughness and dimensions of inner surfaces of ceramic batch supply apertures through which the ceramic batch passes, thereby producing perfect ceramic honeycomb stuctural bodies. The adjustment of flow of ceramic batch is so simplified that any other controlling plate which would be required in the prior art is not needed for controlling the flow. When the supply apertures have been worn off, the tubes are exchanged by new ones to restore the required inner surfaces easily.

REFERENCES:
patent: 1874503 (1932-08-01), Greenwood
patent: 3038420 (1962-06-01), Immohr
patent: 3859031 (1975-01-01), Hawkins
patent: 3905743 (1975-09-01), Bagley
patent: 4139144 (1979-02-01), Cunningham
patent: 4235583 (1980-11-01), Reed
patent: 4343604 (1982-08-01), Minjolle
patent: 4550005 (1985-10-01), Kato

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