Inventors:
Bruce F. Taylor - Worthington OH, US
Arthur C. Weinrich - Cincinnati OH, US
Robert Kadykowski - New Richmond OH, US
International Classification:
H05B 6/10
Abstract:
A system for processing plastic feed material includes a barrel having an upstream feed section and a downstream output section. A screw, supported for rotation in the barrel, cooperates with an inner surface of the barrel to form a path in which the feed material moves toward the output section. A heating system includes an induction winding encircling and extending along a portion of an outer surface of the barrel, and a gap interposed between the induction winding and the barrel and having a nonuniform thickness that varies around the periphery and corresponds to a varying wall thickness of the barrel.