Thermoplastic container parison

Details Thermoplastic container parison Thermoplastic container parison

1981-10-26

1984-07-31

Dixon, Jr., William R.

Stock material or miscellaneous articles

Article of intermediate shape

428 35, 264523, 425526, B65D 100, B65D 8570

Patent

active

044630565

ABSTRACT:
A thermoplastic, generally tubular parison for the blow molding of a thermoplastic container and a method and apparatus for same. The parison includes a finish or neck having a single helical thread extending less than 360.degree. about the circumference of the finish. The radius of the parison at any point on the outside surface is less than the radius through the crest of the helical thread, whereby the parison can be injection molded in an injection molding apparatus with an injection mold comprising all axially movable mold sections.

REFERENCES:
patent: 1579942 (1926-04-01), Jensvold
patent: 2169686 (1939-08-01), Fabrice
patent: 4007848 (1976-02-01), Snyder
patent: 4007851 (1977-02-01), Walker
patent: 4177906 (1979-12-01), Von Hagel
patent: 4199629 (1980-04-01), Aqrawal et al.
patent: 4330579 (1982-05-01), Ota et al.

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