Apparatus for injection molding of multi-layer objects

Details Apparatus for injection molding of multi-layer objects Apparatus for injection molding of multi-layer objects

1994-11-04

1997-09-16

Simmons, David A.

Plastic article or earthenware shaping or treating: apparatus

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

425563, 425566, 425568, B29C 4513, B29C 4516, B29C 4520, B29C 4546

Patent

active

056678193

ABSTRACT:
A method of injection molding of workpieces, formed of at least two different layers, and which includes forming at least one layer from lacquer, with the apparatus for effecting the method including at least two injection molding devices for forming melts of lacquer and non-lacquer materials and an injection unit communicating with the two devices for injecting the two melts into a mold cavity of a mold.

REFERENCES:
patent: 3924839 (1975-12-01), Millauer
patent: 4444507 (1984-04-01), Dray
patent: 4582224 (1986-04-01), Proska et al.
patent: 5125817 (1992-06-01), Yamachika
patent: 5215762 (1993-06-01), Eder et al.
patent: 5449484 (1995-09-01), Gusik et al.
Automotive Engineer, 19 (1993), No. 2, pp. 28 to 91.
Helmut Eckardt, Foam Injection Molding Process, Kunststoffberater (Plastic Material Report), 1983, 1/2, pp. 26 to 32.

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