Apparatus for making a multi-layer injection blow molded contain

Details Apparatus for making a multi-layer injection blow molded contain Apparatus for making a multi-layer injection blow molded contain

1981-11-25

1985-06-25

Silbaugh, Jan

Plastic article or earthenware shaping or treating: apparatus

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

264 401, 264 405, 264513, 425145, 425147, 425149, 425523, B29D 2302, B29F 106, B29F 110

Patent

active

045251347

ABSTRACT:
Apparatus for making a rigid container by injection molding a parison having plural layers of polymers. The parison is blow molded to the final shape of the container. Control during injection is exercised over each of the plural polymers so as to produce uninterrupted layers extending throughout the walls of the parison and to insure that the interior layers are completely encapsulated within the outer layers.

REFERENCES:
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patent: 4149839 (1979-04-01), Iwawaki et al.
patent: 4174413 (1979-11-01), Yasuike et al.
"New Developments in Multicomponent Injection Molding", Plastics Machinery and Equipment, pp. 54, 55, Sep. 1979.
"Multi-Component Molding Goes for Commodity Markets", BP&R, pp. 20-22, Jan. 1981.

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