METHOD FOR BLOW MOLDING CONTAINERS

A method for blow molding a container includes heating a central region of a preformed puck to a first temperature, and heating an annular region surrounding the central region of the preformed puck to a second temperature that is greater than the first temperature. The heated preformed puck is arra...

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Bibliographische Detailangaben
Hauptverfasser:	DESHPANDE, Girish Nilkanth, MCKELVEY, David Robert, BHAT, Advait
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A method for blow molding a container includes heating a central region of a preformed puck to a first temperature, and heating an annular region surrounding the central region of the preformed puck to a second temperature that is greater than the first temperature. The heated preformed puck is arranged at an upper end of a mold cavity of a mold that defines an outer shape of the container. The heated preformed puck is secured to the upper end of the mold cavity. The heated reformed puck is stretched by pressing a plunger into the heated preformed puck and into the mold cavity in a longitudinal direction of the mold cavity toward a lower end of the mold cavity. Pressurized air is then applied to the mold cavity so that the heated preformed puck stretches to conform to the shape of the inner wall of the mold cavity.