Blow molding apparatus with multiple cycle core rods

Details Blow molding apparatus with multiple cycle core rods Blow molding apparatus with multiple cycle core rods

1975-11-28

1976-10-12

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

425DIG208, 425DIG213, B29C 1707

Patent

active

039854850

ABSTRACT:
This blow molding apparatus applies a coating to a core rod and then moves the core rod into an inactive or temperature conditioning position in which it travels through one cycle or more cycles of the apparatus before being brought into interaction with a blowing and stripping station during another 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. In one preferred construction a plurality of core rods are rotatably mounted to an indexing turntable for movement between active and inactive positions, wherein several core rods remain in the inactive or conditioning mode through several revolutions of the indexing turntable.

REFERENCES:
patent: 2819490 (1958-01-01), Froot
patent: 3923441 (1975-12-01), Farrell

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