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Weld Sealing No Longer a Sticky Issue for Hot-Bar Sealers

David Vaczek

Though medical device packagers have favored hot-bar technology for many pouch-sealing applications, film-to-film weld sealing has been problematic. When welding film-to-film with a hot-bar system, seals can become overheated and damaged and stick to the element.

Impulse sealing is often used as a more-effective method for producing weld seals, given its molding capacity. Perfecseal (Oshkosh, WI) has developed an alternative to impulse sealing for film-to-film weld seals that enables weld sealing using hot-bar systems.

“Throughout the industry, our customers have struggled with the poly-to-poly seals produced on hot-bar sealers. For a variety of reasons, they encounter sticking and ultimately tolerate the functional and appearance issues associated with it,” says Mike Di Giovanni, manager of engineering, Perfecseal.

Perfecseal has employed a unique tooling-related sealing technology that has virtually eliminated tool sticking while converting poly-to-poly materials. “We now have the ability to convert notoriously troublesome poly products on our lines without issue,” says Di Giovanni.

“This technology has the potential of opening up a new array of material combinations not normally used in medical pouch applications, for use on our pouch lines and for addressing a host of other issues in a variety of applications,” he adds.

 

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