Extrusion apparatus for foil-covered, hollow plastic bodies

Details Extrusion apparatus for foil-covered, hollow plastic bodies Extrusion apparatus for foil-covered, hollow plastic bodies

1975-05-12

1977-05-03

Shore, Ronald J.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

264209, 425325, 425374, 425380, 425467, B29F 304

Patent

active

040211720

ABSTRACT:
To cover at least one face of an extruded, hollow, plastic body, the front face of the extruder die is formed with a recess in which a cylindrical roller is rotatably mounted contiguously adjacent the die orifice. The roller defines a first portion of a feed channel for a foil with the die wall in the recess and a second channel portion, tangential to the first, with the mandrel which defines an extrusion gap in the die orifice. The foil may be draped about side faces of the mandrel by pressure rollers if the extrudate is backed by mandrel portions extending to the pressure rollers.

REFERENCES:
patent: 1197326 (1916-09-01), Ackerman
patent: 2382177 (1945-08-01), Schanz
patent: 2696640 (1954-12-01), Wienand
patent: 3792951 (1974-02-01), Meyers
patent: 3895898 (1975-07-01), Theysohn
patent: 3915616 (1975-10-01), Nackaerts

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