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Welch's opts for multilayer PP, easy-spread cap

Like other juice marketers, Welch’s has typically relied on heat-set polyethylene terephthalate when converting from glass to plastic. But the firm changed that pattern when it came time to design a plastic alternative to its 10-oz single-serve glass containers. This time, the Concord, MA-based firm opted for a translucent polypropylene bottle rather than clear PET.

Pw 16857 Kiwi

Shipments began in August and a rollout is underway.

“Our research showed us that clarity is not as big an issue with consumers as the folks in our industry have always assumed,” says Ed Lerner, manager of R&D package and process development. “Besides, hot-filling PET would cost significantly more, because in a small container like this the surface-to-volume ratio means you need multiwall barrier PET, not monolayer PET.” Cost of the PP bottle, Lerner adds, is almost at parity with its glass counterpart, which, for now at least, remains in use.

Weighing 26 g and topped by an injection-molded 38-mm PP closure from White Cap (Downers Grove, IL), the multilayer bottles are coextrusion blow molded by Pechiney Plastic Packaging (Chicago, IL). Welch’s fills them on its glass lines. A paper/PP label adorns the package, but Lerner isn’t saying much about the label or its suppliers. He’s also guarded about the bottle’s structure, saying only that it includes ethylene vinyl alcohol as a barrier layer. “There are other nuances to it, as well,” he adds. Shelf life is one year, the same as for glass.

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