Method for making a multi-layered blown plastic container

Details Method for making a multi-layered blown plastic container Method for making a multi-layered blown plastic container

1981-09-21

1982-12-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

425523, B29C 1707, B29D 900

Patent

active

043648967

ABSTRACT:
A multi-layered blown plastic container is formed by injection molding a first thermoplastic parison, axially stretching the first parison at its orientation temperature, injection molding a second thermoplastic parison around the first parison, and blowing the multi-layered parison at its orientation temperature to provide an oriented container, the inner layer being oriented in the axial and hoop directions, and the outer layer oriented in the hoop direction.

REFERENCES:
patent: 3878282 (1975-04-01), Bonis et al.
patent: 4267143 (1981-05-01), Roullet

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