Compressed air resin dryer adapts to changing needs

Sept. 21, 2020
Wittmann Battenfeld’s compressed air resin dryer (CARD) for injection molders can handle material throughputs ranging from 5.6 ounces per hour to 2,204 pounds per hour.

CARD Wittmann Battenfeld’s compressed air resin dryer (CARD) for injection molders can handle material throughputs ranging from 5.6 ounces per hour to 2,204 pounds per hour. It is suited for all types of plastics, including engineering resins, and can be used without a water cooler. 

What’s new? The CARD dryer, and its various operation modes. “Sleep mode” protects the resin from over drying if the press unexpectedly shuts down by reducing the dryer’s heat output and air use. In “rampen mode,” the dryer raises its temperature in stages to protect sensitive resins from becoming sticky. During startup, “count down mode” sends a signal to the injection molding machine to let it know how long the dryer has been operating and whether the resin is dry enough. “Power mode” overrides the dryer’s precise digital control to provide constant drying of highly hygroscopic resins such as polyamide. The dryer hits the U.S. market in October.

Benefits Adaptability. The dryer provides gentle, energy-efficient drying while meeting changing production needs.  

Wittmann Battenfeld Inc., Torrington, Conn., 860-496-9603, www.wittmann-group.com