METHOD AND APPARATUS FOR PRODUCING FINISHED FOAM PLASTIC CONTAINERS

The present invention is directed to an improved apparatus and method for manufacturing completed foam plastic containers. An endless mandrel chain (46) carries cup forming mandrels (FM) along a manufacturing path. After each mandrel is preheated, a bottom blank (BD) is placed on the mandrel bottom...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CRESS, ALLAN K, BUSSE, CHARLES E
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention is directed to an improved apparatus and method for manufacturing completed foam plastic containers. An endless mandrel chain (46) carries cup forming mandrels (FM) along a manufacturing path. After each mandrel is preheated, a bottom blank (BD) is placed on the mandrel bottom and held there by a vacuum. A cylindrical blank (10C) formed from longitudinally stretch-oriented foam sheet material is then placed onto the mandrel. This cylindrical blank (10C) is tightly tamped onto the mandrel (FM) and is clamped in place. Radiant heat is then used to shrink form a finished container. The bottom is then sealed to the cylindrical blank and the mandrel is transferred to a curling assembly (TCT) where the top edge portion of each finished container is lubricated and then curled to form a finished rim. The apparatus of the present invention may form containers having a dual tapered configuration which allows the containers to be more tightly stacked.