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Twister takes a whole new shape

For its Twister brand juice beverage, Tropicana North America has launched a 1.75-L (59.3-oz) heat-set bottle made of polyethylene terephthalate that the Bradenton, FL, firm describes as "the first heat-set, hot-filled (180°+) rectangular PET bottle" for a juice beverage in the U.S.
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FILED IN:  Package design  > Structural
     

Tropicana and Graham jointly developed the patent-applied-for bottle. Injection stretch/blow molded in a two-stage process it provides a six-month shelf life.

Package differentiation and better cube efficiency are two of the major advantages that come with a rectangular as opposed to a round shape. The shape also makes the bottle easy to grip. And shelf impact is improved because the label can stretch across a wide flat surface instead of disappearing around a round sidewall.

Most significant however is that this bottle does away with the vacuum panels that ordinarily are designed into hot-fillable PET bottles to keep them from distorting as internal vacuum pressure builds during product cooling. The front and back panels provide the needed "give" as internal pressure builds.

Molded into the front of the 97-g bottle is a tornado-like shape suggestive of the brand's name. The bottle has a 43-mm neck finish and takes a compression-molded polypropylene closure with a proprietary extruded barrier liner developed by closure maker Owens-Illinois (Toledo OH). In Rochester and Buffalo NY and in all markets west of Denver a territory described by Tropicana as its "lead" market the new container has replaced 46-oz glass entirely for Twister. Other markets for now at least will stick with glass.

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