Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – For extrusion or injection type shaping means
Patent
1990-06-01
1991-05-07
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
For extrusion or injection type shaping means
26417712, 425461, 425462, 425464, B29C 4730
Patent
active
050132326
ABSTRACT:
In accordance with a preferred embodiment, a monolith extrusion die is formed by a plurality of individual tube elements bonded together as a tube stack defining a plurality of extrudable material feed holes and reference guides for a plurality of individual shaping teeth each having a root segment located in a reference guide and each having a shaping head spaced apart from adjacent shaping heads to form intersecting rows of extrusion slots having a shape corresponding to the monolith formed by extrudable material directed from the feed holes through the shaping teeth. The method of the present invention includes stacking individual tubes into a tube stack with reference guides therein and with feed holes therethrough and locating a plurality of individual shaping teeth in the tube stack for forming a transition path for flow of extrudable material from the feed holes while forming intersecting rows of extrusion slots shaped to correspond to the monolithic honeycomb structure formed by passage of extrudable material therethrough.
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General Motors Corporation
Grove George A.
Nguyen Khanh P.
Woo Jay H.
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