Photocells ensure accurate positioning on high-speed wrapper

A network of nearly 20 sensors on the GlobalShrink system help keep container collating, tray positioning, and shrink film infeed on track.

Pw 5574 Sick W18 3 Product Photo

Hartness International (www.hartness.com), a supplier of top-load case packers and a growing number of other packaging and material handling systems, makes a GlobalShrink TFS system that collates and wraps containers in shrink film for transfer to a shrink tunnel. On a machine operating at speeds to 100/min, a network of sensors that identify and verify accurate positioning of containers and wrapping materials is crucial. Hartness accomplishes the verification it needs by incorporating nearly 20 Sick (www.sickusa.com) photocells in its GlobalShrink system.

“Sick is especially strong when it comes to film registration detection,” says Mathias Coulomb, Hartness GlobalShrink product manager. “When the film being applied has graphics, it needs to be oriented properly or the graphics won’t look good on the store shelf. Contrast sensors are used to perform this important task of print registration.”

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