Container structure for removal of vacuum pressure

A hot-fill PET container or bottle filling with a liquid at an elevated temperature has a side wall extending to a lower portion including a pressure panel and a base in its unfolded or pre-fill position. The panel is transversely oriented and has a decoupling or hinge structure, an initiator portio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Melrose, David Murray
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR BOTTLES, JARS OR SIMILAR CONTAINERS CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OFBOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOTOTHERWISE PROVIDED FOR 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 FUNNELS HANDLING THIN OR FILAMENTARY MATERIAL LIQUID HANDLING MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS OPENING, CLOSING PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING UNPACKING
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Beschreibung
Zusammenfassung:	A hot-fill PET container or bottle filling with a liquid at an elevated temperature has a side wall extending to a lower portion including a pressure panel and a base in its unfolded or pre-fill position. The panel is transversely oriented and has a decoupling or hinge structure, an initiator portion and control portion of a steeply angled inverting conical section between 30 and 45 degrees. The control portion enables the inversion of the panel into the container to compensate for vacuum or reduced pressure induced within the container as the liquid cools down. The base can also have a plurality of reinforcing ribs.