Continuous injection-blow molding method

Details Continuous injection-blow molding method Continuous injection-blow molding method

1975-02-13

1976-10-05

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

425DIG209, 425DIG211, B29C 1707

Patent

active

039845133

ABSTRACT:
The novel method comprises sequential and repetitive steps in which a series of core rods are moved into parison molds, plastic is injected into the molds to form a sheath of plastic about the rods, the plastic-sheathed rods are transferred to blow molds, and pneumatic means close onto the blow molds to cause the parison sheaths to conform to the configuration of the blow molds. Follow this sequence of steps, both the core rod and the blow-formed product are removed from the blow mold; the core rod is re-cycled for a repetition of process, and the product is placed into storage or supply. Too, re-supplies of plastic are timely introduced during the process sequence following the injection use of a last provisioned supply or charge, in order that the cycling might proceed without halt.

REFERENCES:
patent: 3881855 (1975-05-01), Farkas

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