Method for making blow molded generally tire shaped articles

Details Method for making blow molded generally tire shaped articles Method for making blow molded generally tire shaped articles

1976-05-12

1978-02-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

264 98, 264326, 425530, B29C 1707

Patent

active

040751872

ABSTRACT:
A tire shaped article is blow molded by extruding a tubular parison between movable mold sections, sealing the open end of the parison, injecting air into the parison, moving a lower mold section and the bottom portion of the parison upwardly and expanding an intermediate portion of the parison radially outwardly into a mold cavity.

REFERENCES:
patent: 2814072 (1957-11-01), Soderquist
patent: 3347964 (1967-10-01), Sidles
patent: 3470933 (1969-10-01), Molnar
patent: 3507942 (1970-04-01), Lynch
patent: 3736201 (1973-05-01), Teraoka
patent: 3917791 (1975-11-01), Kratochvil et al.

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