Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material
Patent
1976-02-09
1978-01-24
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
Work is organic material
264 98, 425530, 425534, B29C 1707
Patent
active
040704289
ABSTRACT:
A method utilizing preform and final blow molds for forming molecularly oriented thermoplastic articles. According to the method, an extruded tubular parison is positioned within the pre-form blow mold and blown to a pre-form configuration. The blown pre-form is then conveyed, while suspended from a moveable carrier, through a thermal conditioning chamber and the temperature of the pre-form is adjusted to within the range for molecular orientation. Next, the thermally conditioned pre-form is conveyed by the moveable carrier to a final blowing station where the pre-form is blown to the configuration of the final article. In a first disclosed embodiment, the carrier is a blow pin which is inserted into the tubular parison at the pre-form molding station prior to the first molding operation. In the second embodiment, the carrier is a tubular projection telescopically inserted into the blown pre-form prior to entry of the pre-form into the thermal conditioning chamber, and the pre-form is blown to its final shape by a blow tube inserted through the carrier. In both embodiments, the carriers are used to convey successive pre-forms in a continuous molding operation.
REFERENCES:
patent: 2792593 (1957-05-01), Hardgrove, Jr.
patent: 3125619 (1964-03-01), Miller
patent: 3324507 (1967-06-01), Arlo
patent: 3325862 (1967-06-01), Mehnert
patent: 3415915 (1968-12-01), Lecluyse et al.
patent: 3632261 (1972-01-01), Gasior et al.
patent: 3767747 (1973-10-01), Uhlig
patent: 3873660 (1975-03-01), Reilly et al.
patent: 3940231 (1976-02-01), Uhlig
patent: 3978184 (1976-08-01), Dybala et al.
Krall Thomas J.
Uhlig Albert R.
Heberling Richard D.
Owens--Illinois, Inc.
Silbaugh Jan H.
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