Blow molding method with double cycle for core rods

Details Blow molding method with double cycle for core rods Blow molding method with double cycle for core rods

1975-11-05

1977-11-01

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

264 97, B29C 1707

Patent

active

040565904

ABSTRACT:
This blow molding method applies a coating to a core rod and then moves the core rod into an inactive position in which it travels through one cycle of the apparatus before being brought into interaction with a blowing and stripping station during a second cycle. This travel of the parison with the core rod in an inactive position allows time for the parison to be brought to a temperature for biaxial orientation before blowing the parison. The cooling can also be used to bring the parison to a condition at which a second coating can be applied over the parison to make a laminated container or other article. The preferred construction has the core rods hinged to an indexing table for movement between active and inactive positions.

REFERENCES:
patent: 3797983 (1974-03-01), Merz

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