Document Type and Number:
Japanese Patent JPH0469010
Kind Code:
B2
Abstract:
An extrusion die (50) for forming honecomb structures comprises a body member (61,63) having an inlet face (54) and an outlet face (55), a plurality of interconnected slots (62) axially formed in the body member (61,63) and communicating with the outlet face (56), a plurality of relatively small feed holes (72,72a,72b), axially formed in the body member (61,63) in sets and each communicating in axially overlapping relation with a selected slot (62) and a plurality of relatively large feed holes (78,78a,78b) axially formed in the body member (61,63) and extending into said body member from inlet face (54) and communicating with a set of the small feed holes (72,72a,72b). Each large feed hole (78,78a,78b) axially overlaps the corresponding set of small feed holes (72,72a,72b) to form an enlarged transition zone (T).
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Inventors:
FURANSHISU ROBAATO DEYUURU
REONAADO UIRIAMU HOKARASU
REONAADO UIRIAMU HOKARASU
Application Number:
JP4280884A
Publication Date:
November 05, 1992
Filing Date:
March 05, 1984
Export Citation:
Assignee:
CORNING INC
International Classes:
B21C25/02; B28B3/20; B28B3/26; B29C48/11; B29C48/32
Next Patent: JPH0469011