Ability to dry independently two materials in two hoppers of significantly different sizes is a new option for the Drymax 100 Series of portable dryers from Wittmann Inc., Torrington, Conn. Shown here is a model with a 300-liter hopper for resin and 30-liter hopper for color concentrate. Throughput for this model is 75 to 135 lb/hr.
Each hopper has its own SmartFlow valve to automatically adjust airflow and heating based on measuring the temperature differential between incoming and outgoing air. This is said to save energy and prevent overdrying.