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Cap design delivers shelf-stable probiotic drink

The first-ever line of shelf-stable, “mix-to-drink” probiotic beverages uses an innovative concept that relies on Emerson’s Branson spin-welding technology for a cap design that dispenses probiotics with the push of a button.

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Produced by Karma Culture LLC of Pittsford, NY, the Karma Wellness Water features a patented cap that protects dry probiotic cultures to maintain the highest efficacy without the need for refrigeration.

“The KarmaCap design, sealed with Branson spin-welding technology, has been vital to our ability to deliver the only shelf-stable probiotic water available,” says C.J. Rapp, CEO of Karma Culture LLC. “The factor of shelf stability is important for retailers who may have little to no refrigerated space. And it’s ideal for consumers’ busy lifestyles. They now can toss one of our beverages, like Karma Probiotics, into a briefcase or gym bag, knowing that it will retain potency, even without refrigeration.”

Probiotic cultures, known as “good bacteria,” are living microorganisms that are known to support immune and digestive health. Typically premixed with water before bottling, the probiotic ingredients are prone to deteriorate due to moisture, UV rays, oxygen, or heat. Premixed products like this require refrigeration or special handling to slow deterioration, but cannot stop it.

The KarmaCap overcomes these obstacles by using a screw-on base with a sealed upper capsule that contains the probiotics until the consumer chooses to mix with the push of a button. The sealed upper capsule works because spin-welding technology joins circular thermoplastic parts by applying pressure and a spinning motion that generates heat to melt and fuse them together without affecting the probiotics inside. The result is an airtight seal between the upper capsule and the screw-on cap base that prevents premature mixing or leaking.

Karma’s “mix-to-drink” probiotic beverages are one of the latest examples in increasing package complexity fueled by consumer demand for more convenient, on-the-go products. To meet demand, packaging lines are pressured to accommodate unprecedented levels of package variety and complexity. For Karma, that meant finding a way to successfully execute production of its complex cap design.

Today, the KarmaCap manufacturing process features automated production using Emerson’s Branson SW300 servo-driven spin welders to produce caps that are free from the issues associated with snap-fit seals – dramatically improving production efficiency and eliminating nearly all rejects.

“Our relationship as a trusted partner to Karma rather than merely a supplier fostered a productive collaboration that enabled us to truly understand the Karma team’s vision and deliver a customized solution that utilized our spin-welding technology to produce a cap that met their requirements,” says Jeff Frantz, director of North American business development for Branson Assembly Technologies at Emerson.

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