Method for making oriented hollow plastic articles

Details Method for making oriented hollow plastic articles Method for making oriented hollow plastic articles

1977-10-28

1979-05-22

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264516, 264520, 264530, 264532, 264537, 264538, B29C 1707

Patent

active

041559746

ABSTRACT:
Method and apparatus for the preparation of oriented hollow objects of moldable organic plastic material by providing a parison on a first blow core, expanding said parison into an intermediate shape, as by pre-expanding it, transferring said pre-expanded parison to a second blow core, finally extending and expanding said parison to form said hollow object in finished shape.

REFERENCES:
patent: 3325862 (1967-06-01), Mehnert
patent: 3364521 (1968-01-01), Valyi
patent: 3412186 (1968-11-01), Piotrowski
patent: 3767747 (1973-10-01), Uhlig
patent: 3770860 (1973-11-01), Amberg et al.
patent: 3776991 (1973-12-01), Marcus
patent: 3781395 (1973-12-01), Uhlig
patent: 3819314 (1974-06-01), Marcus
patent: 3886247 (1975-05-01), Edwards
patent: 3944643 (1976-03-01), Sato et al.

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