Coextrusion block, especially for the coextrusion of generally f

Details Coextrusion block, especially for the coextrusion of generally f Coextrusion block, especially for the coextrusion of generally f

1988-08-26

1989-08-15

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

2641771, 4251331, 4251335, 425462, B29C 4704

Patent

active

048569755

ABSTRACT:
A coextrusion block for siding communicates through respective separate circular inlets with two extruders at the inlet side of the coextrusion block while, at the outlet side, a curved kidney-shaped outlet is disposed about an inlet of acorn shape so that the outlets have boundaries lying along the common circle which corresponds to the circular inlet of the broad-mouth die.

REFERENCES:
patent: 4386891 (1983-06-01), Riefel et al.
patent: 4405547 (1983-09-01), Koch et al.
patent: 4426344 (1984-01-01), Dinter et al.
patent: 4548569 (1985-10-01), Pitigliano et al.
patent: 4708615 (1987-11-01), Bethea et al.

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