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Bru's big on blue PET

Recognizing that an established brand lives or dies partly on the strength of its packaging, marketers at Bru S.A. were downright picky about which PET resin to use when they introduced 50-cL (16.9-oz) bottles of natural sparkling mineral water last May.

Pw 15300 Bru1

By selecting Aqua PET 20837 from the European division of Voridian (Kingsport, TN), the firm’s “commitment to quality” is clearly communicated, says Pierre De Winter, supply chain director at the Lorce, Belgium, firm. “It’s a high-performance resin that enables our packaging to reflect the superior quality of the Bru-brand products.”

A variety of Bru-brand products in several PET bottle sizes are marketed by Bru S.A., and any number of resin grades are used. But for this particular bottle/product combination, key considerations had to be factored in before making a resin selection. First, the bottle is small so the low surface-to-volume ratio magnifies the potential for off-tastes due to acetaldehyde levels. Second, the embossing on the sidewalls introduces structural challenges that are best addressed by specifying a resin having sufficient toughness. And finally, the product itself, a sparkling water, requires a tougher PET resin than a noncarbonated still water. Only after all these factors were considered could a resin grade be selected.

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