The new fluidized bed coating system uses ultrasonic vibration. Designed for use in laboratory research and development applications, the system uses an ultrasonic spray nozzle for gentle Wurster (fluid bed) coating. Instead of atomizing air pressure, the nozzle uses a tiny ultrasonic horn, which vibrates at a fixed frequency to break up the droplets. The nozzle can achieve uniform, thin-film particle coatings with droplet sizes in the 10 to 30 micron range. The system also features a controller for fine-tuning of the spray pattern and shape, providing users with adjustable, automated control over the size of the droplets. The Wurster coating process involves suspending fine particulate substances in the bowl of a fluid bed while a nozzle applies the coating.
Fluid Air, Aurora, IL 60502. www.fluidairinc.com or call 630-665-5001
INTERPHEX 2013 Booth No. 1542