Tri-injection of hollow articles

Details Tri-injection of hollow articles Tri-injection of hollow articles

1987-05-18

1989-02-28

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

B29C 4502

Patent

active

048081019

ABSTRACT:
Apparatus for tri-injecting a plurality of thermoplastic materials to mold an article having a layered wall structure using thermoplastic materials having different optimum processing temperatures including the maintenance of the optimum temperatures in flow paths individual to each material from its source at least to the injection nozzle.

REFERENCES:
patent: 4030637 (1977-06-01), Boden et al.
patent: 4518344 (1985-05-01), Latreille et al.
patent: 4717324 (1988-01-01), Schad et al.

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