A new Vibro-Air™ Size/Density Separator for extruded pellets, regrind and recycled plastics, employs vibratory screening and airflow to simultaneously remove fines, angel hair, strands and film scrap from pellets and ground/chopped plastics, it was announced by Henry Alamzad, president, Kason Corp.
Material fed through a port on the unit's hood cascades over a series of strategically placed internal trays, and ultimately onto a vibrating, fine mesh screen that moves on-size material in controlled flow patterns toward and through a discharge port at the screen's periphery. Heavier fines pass through the screen onto a chute leading to a lower discharge spout.
Simultaneously, air drawn into the base of the air-tight chamber flows upward, drawing angel hair, strands, film scrap, dust and other low density materials from the vibrating trays, into an airstream that increases in velocity (as the hood tapers) before venting to a cyclone and/or dust collector.
"The combination of air flow and vibration is effective at overcoming the static charge attraction between plastic particles that screening alone may not," says Alamzad.
Optional is a coarse screening deck positioned above the fine mesh screen to scalp agglomerated particles, foreign matter and other oversize material. The separator is available in 24 to 100 in. (610 to 2540 mm) diameters, in carbon steel or in stainless steel finished to industrial or sanitary standards, and is offered as a stand-alone unit or a complete system integrated with a dust collection system, exhaust fan and electrical controls on a mobile frame, ready to plug in and run.