PROCESS FOR MAKING PET CONTAINERS WITH ENHANCED THERMAL PROPERTIES

The process comprises steps of, on an integrated system injecting a molten PET resin into an injection mold cavity to form a preform (22); removing the preform (22) while the preform (22) is at a temperature of from 75° C. to 130° C.; conveying the preform to a conditioning station at a rate such th...

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Bibliographische Detailangaben
Hauptverfasser:	SCHNEIDER Mark D, BOBROV Sergey B, EVINS Samuel E, SILVERS Kerry W
Format:	Patent
Sprache:	eng ; slv
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The process comprises steps of, on an integrated system injecting a molten PET resin into an injection mold cavity to form a preform (22); removing the preform (22) while the preform (22) is at a temperature of from 75° C. to 130° C.; conveying the preform to a conditioning station at a rate such that the temperature of the surface of the preform (22) does not decrease more than 5° C.; conditioning the preform by selectively heating specific areas of the preform (22) comprising at least the neck forming (51, 52), barrel forming (53), heel forming (54), and base forming (55) zones of the preform (22) to achieve a temperature gradient in the specific areas of 20° C; conveying the conditioned preform (22) to a blow mold station at a rate such that the temperature of the surface of the preform does not decrease more than 5° C.