Triple-wall foam coextrusion apparatus

Details Triple-wall foam coextrusion apparatus Triple-wall foam coextrusion apparatus

1987-12-31

1989-07-11

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

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

Extrusion shaping means

264 459, 264171, 425380, 425462, B29C 4712

Patent

active

048466484

ABSTRACT:
A triple-wall foam coextrusion apparatus in which inner and outer layers of one synthetic resin material are coextruded with an intermediate layer of another synthetic resin material, and wherein the passages for the first material are inclined to the axis along which the second material is extruded around a spider to ensure uniform flow.

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patent: 4465449 (1984-08-01), Hornbeck
patent: 4731002 (1988-03-01), Spence et al.

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