Baffled laminated extrusion dies

Details Baffled laminated extrusion dies Baffled laminated extrusion dies

1982-08-19

1984-08-28

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642091, 2642098, 425192R, 425198, 425376A, 425381, 425461, 425464, 425466, 425467, B29F 304

Patent

active

044683669

ABSTRACT:
Method and apparatus is set forth for extruding honeycomb structures having cohesive cellular walls from an extrusion die. A baffle member is provided within the flow passageways of the die so as to provide impedance to longitudinal batch flow through certain of the discharge slots such that the impedance to flow in all of the slots is substantially equal, thus improving product quality and knitting or cohesiveness of the batch material prior to discharge from the die.

REFERENCES:
patent: 2908037 (1959-10-01), Harkenrider
patent: 2946090 (1960-07-01), Houvener
patent: 3861843 (1975-01-01), Keuchel et al.
patent: 3905743 (1975-09-01), Bagley
patent: 3923444 (1975-12-01), Esper et al.
patent: 3954365 (1976-05-01), Barth et al.
patent: 3983283 (1976-09-01), Bagley
patent: 4168944 (1979-09-01), Morikawa et al.
patent: 4298564 (1981-11-01), Higuchi et al.
patent: 4321025 (1982-03-01), Cunningham
patent: 4343604 (1982-08-01), Minjolle

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