Blow molding machine for producing pasteurizable containers
AssigneeSchmalbach-Lubeca AG
InventorsTimothy J. Boyd, Dwayne G. Vailliencourt
Life of this patent
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Abstract
A blow molding machine for producing a biaxially oriented, heat set plastic container, including a blow mold; a high-pressure fluid source; a high-temperature fluid source; a blow core assembly having an exhaust; and a controller coupled to the high-pressure fluid source, to the high-temperature fluid source, and to the exhaust. The PET containers produced by the machine have an average sidewall crystallinity greater than about 30%, which allows the PET container to maintain its material integrity during any subsequent pasteurization or retort process of the contents in the PET container, and during shipment of the PET container.
Claims15
A blow molding machine for producing a heat set container, said machine comprising:
- a blow mold defining a mold cavity capable of receiving a preform;
- a high-pressure fluid source;
- a high-temperature fluid source;
- a blow core assembly engagable with the preform and coupled to said high-pressure source and to said high-temperature source to supply high-pressure fluid and high-temperature fluid to an interior portion of the preform, said blow core assembly having an exhaust to exhaust fluid from the interior portion of the preform;
- and
- a controller coupled to said high-pressure fluid source and to said high-temperature fluid source to selectively control the supply of high-pressure fluid and high-temperature fluid, said controller further coupled to said exhaust to selectively control the fluid exhaust.
A blow molding machine for producing a heat set container, said machine comprising:
- a blow mold defining a mold cavity capable of receiving a preform;
- a high-pressure fluid source;
- a high-temperature fluid source;
- a blow core assembly engagable with the preform and coupled to said high-pressure source and to said high-temperature source to supply high-pressure fluid and high-temperature fluid to an interior portion of the preform, said blow core assembly having an exhaust to exhaust fluid from the interior portion of the preform and a stretch rod which is movable from a retracted position to an extended position to axially stretch the preform;
- and
- a controller coupled to said high-pressure fluid source and to said high-temperature fluid source to selectively control the supply of high-pressure fluid and high-temperature fluid, said controller further coupled to said exhaust to selectively control the fluid exhaust.
Dependencies are inferred from the claim text.