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Dow Corning sings praises of palletizer/stretch wrapper combo

Combo systems at the end of three silicone sealant cartridge packaging lines save space, money and materials at the company's Elizabethtown, KY, facility.

Cases are formed into rows (top) on a slider plate that moves a layer of cases (above) onto the stretch wrapper part of the pall
Cases are formed into rows (top) on a slider plate that moves a layer of cases (above) onto the stretch wrapper part of the pall

At Elizabethtown, KY, Dow Corning Corp. manufactures silicone sealant products in cartridges, pails and drums that are sold to a diverse range of commercial and retail customers. About a year ago the plant installed three Q-Pal(TM) automatic palletizer and stretch wrapper systems from Lantech (Louisville, KY).

The Q-Pals allow the plant to palletize three different case sizes, as opposed to the one that was possible before the systems were added. Combined, the Q-Pals save 6ꯠ sq' of valuable floorspace at the plant. They've also eliminated the need for outdated and inefficient conveyors, as well as shrink-wrapping equipment, while reducing maintenance costs.

Dow Corning is reportedly the second company to install and use these unusual combination systems on a commercial basis. The plant uses the Q-Pals to palletize cases and stretch wrap loads produced on three sealant cartridge packing lines. The lines produce cases containing either 12, 24 or 30 of the plastic cartridges. Each cartridge holds 10.3 oz of ready-to-use sealant material. One line packs all three counts while two are limited to the 12-count.

Elsewhere in the packaging machinery universe, monobloc rinsing/filling/capping systems and checkweigher/metal detector combinations are fairly common. But end-of-line combinations that share integrated control systems like the Q-Pal are unusual.

Lantech first demonstrated Q-Pal units at last November's Pack Expo in Chicago. At that show, Packaging World editors noticed that beside the palletizer/stretch wrapper combo, other suppliers were also showing palletizers paired with label applicators, labelers with case erectors and coders with case sealers. These pairings may represent a different "turnkey" trend--or simply a savvy approach by suppliers to build equipment sales. Either way, packagers should watch to see if more combos of packaging machinery respond to their needs.

Matchmaking

"We weren't necessarily looking for cutting-edge packaging technology when we purchased the equipment," says William Harris, Dow Corning's senior project engineer at the Elizabethtown plant. In fact, he says that the Midland, MI-based company had actually bought a combination palletizer/stretch wrapper "about nine years ago" that still operates on a packaging line in a different area of the plant.

While that system has performed satisfactorily, Dow was steered toward the Q-Pal systems by Xpedx (Covington, KY). "Xpedx is our distributor for shrink and stretch film," says Harris. "They knew that we wanted to eliminate shrink bundling equipment from our lines at the plant and save space. The company represents Lantech equipment and knew that Lantech was getting into this type of combination system. As far as we know, there's only one other company that makes a combination palletizer/stretch wrapper."

Dow Corning decided to buy the Lantech combo for several reasons. "The primary objective was to improve our flexibility," Harris says. "We had customers demand different case counts. Before we added the Q-Pals, our case packers and palletizer limited us to doing only a 12-count case."

Case count, however, wasn't the sole limiting factor. "At that time," Harris notes, "we were using one central palletizer for the three lines. It was about 100 feet away from the case packers at the end of those three lines. We used that space for conveyors to take the cases across our plant to the palletizer, and then to one stretch wrapper. And that's valuable real estate." Harris says this packaging configuration has existed for about 20 years, and the people who created the setup have since retired, so no information was available on why the plant was arranged this way.

"The roller conveyors were not very stable for the smaller 12-count case," he says. "So to prevent cases from tipping over we needed to convey something with a larger, more stable 'footprint'."

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