Factory-on-wheels shows off portable drying

Published: March 14, 2012 6:00 am ET

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Topics Product News, NPE 2012

Dri-Air Industries Inc. is taking its drying show on the road.

The company also announced its product introductions for NPE2012 (Booth 3119).

Dri-Air recently completed the installation mounted inside a 28-foot truck, which can easily be driven to a customer’s location. The idea was launched by Poly Clean USA LLC in Charleston, S.C., as a spinoff of the company’s five-truck “factory on wheels” that brings various optical-sorting technologies right to processors, resin companies, recyclers and compounders.

For this new drying system, moist resin is conveyed from the customer’s facility into the portable drying system inside the truck, where it is dried with conventional desiccant dryers. The dried material is conveyed back into the customer’s plant.

The goal was to dry up to a thousand pounds an hour of resin with a six-hour residence time, said Dri-Air President Charles Sears. Normally, that would need a 6,000-pound capacity hopper.

“However, the additional stipulation was to mount all of the equipment into a truck that could not require a special license to drive,” Sears said. “Obviously, standard equipment does not fit into a truck as the height of a 6,000-pound capacity hopper would exceed the height of the truck

Dri-Air modified six 1,000-pound hoppers, divided into two banks of three hoppers each.

The system is sized to load all six hoppers in less than one hour.

Dri-Air also announced:

• A new line of precision hopper-mounted dryers that use plant air to dry material. The compressed-air dryers and compact and easy to use. They can process up to 15 pounds of material an hour.

To assure the resin is properly dried, Dri-Air’s Dri-Pak membrane provides a continuous stream of minus 49°F dew point air regardless of the conditions.

The micro-line comes in a wide range of configurations, including compact all-in-one drying systems to separate systems with two-ounce hoppers and standalone dryer packages

• An upgraded volumetric blending system for the PDII dual-hopper dryers. Both feeders are mounted on load cells, to monitor and record the actual amount of material used. The feeder is automatically filled to a preset amount by opening a gate under the drying hopper.

The actual amount of material in the feeder is recorded and compared to the amount left in the feeder after dispensing into the common conveying stream.

Officials of Dri-Air, based in East Windsor, Conn., said this system gives a more accurate ratio from a shot-to-shot basis than other designs, by eliminating the mixing chamber.

Tel. 860-627-5110, fax 860-623-4477, email sales@dri-air.com.


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