Method and apparatus for forming an article with multi-cellular

Details Method and apparatus for forming an article with multi-cellular Method and apparatus for forming an article with multi-cellular

1990-12-17

1992-04-28

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

425192R, 425382R, 425463, 425464, B29C 4712

Patent

active

051086859

ABSTRACT:
Novel method and apparatus for forming a substrate or honeycomb article with multi-cellular densities and/or multi-cellular geometries by positioning a pair of extrusion dies adjacent one another, such that one surrounds the other, and such that discharge slots of one die produce different cellular densities and/or geometries from that of the other. Further, an annular batch reservoir is formed between the mating surfaces of such dies so as to facilitate the flow of batch material from one die to the other, and an integral inner skin is formed between the differing cellular structures.

REFERENCES:
patent: 3853485 (1974-12-01), Hogan
patent: 4168944 (1979-09-01), Morikawa et al.
patent: 4448828 (1984-05-01), Mochida et al.
patent: 4798526 (1989-01-01), Briggs et al.
patent: 4810554 (1989-03-01), Hattori et al.

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