Plastic article or earthenware shaping or treating: apparatus – Means providing a shaping orifice – Plural distinct feed inlets
Patent
1987-09-08
1990-02-20
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Means providing a shaping orifice
Plural distinct feed inlets
26417712, B29C 4730
Patent
active
049022164
ABSTRACT:
Secondary discharge slots are cut into the face of newly made or used extrusion dies such that the secondary discharge slots communicate transversely and longitudinally with primary discharge slots but do not communicate with the feed holes. The novel extrusion die arrangement is set forth for the production of ceramic honeycomb structures which produce a greater number of cells per square inch, protrusions on the cell walls, or a combination of both dependent upon the Primary Slots' Volume to Secondary Slots' Volume ratio. The secondary discharge slots can produce honeycomb substrates with much greater surface areas, using an extrusion die with a significantly reduced number of feed holes and a greater number of discharge slots.
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Cunningham George M.
Frost Rodney I.
Lachman Irwin M.
Chiesa Richard L.
Corning Incorporated
Janes Jr. Clinton S.
Klee Maurice M.
Wardell Richard N.
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