Look to PlasticsToday's Product Watch for updates on recent developments in the world of plastics processing machinery. New for rotational molders is the Carrossel independent-arm rotational molding machine from Rotoline Industrial Equipment Ltda. (Chapeco, Brazil), an affiliate of Reduction Engineering Inc. (Kent, OH). The company will introduce the machine at the Brasilplast exhibition this month (May 9-13) in São Paulo, Brazil.
The new unit features Rotoline's round-shape oven and "reverse air re-circulation" with a more powerful oven burner system than previous systems, leading to more efficient heat distribution. Straight arm configuration is standard with offset arm an option. Efficiency of these rotomolding machines is improved by balancing the recirculation fan, exhaust fan, and the burner position controlled by a proportional-integral-derivative (PID) program, thus reducing gas consumption and cycle time, according to the company. The company's circular oven has no dead space and so helps with greater fuel efficiency. ...