The Macrowave SMC Preheater system for plastic sheet molding compound (SMC) uses radio frequency heating technology.
The Macrowave SMC Preheater system for plastic sheet molding compound (SMC) uses radio frequency heating technology.

U.S.-based Radio Frequency Co is distributing a new preheating system for plastic sheet molding compound (SMC) that uses radio frequency heating technology. 

This new system is reported to improve the movement and distribution of reinforcement fibers in the molding process, which can in turn improve product quality and strength and reduce press cure time by 50%. It is especially effective for thicker bosses and structures.

The Macrowave SMC Preheater provides uniform heating throughout the entire thickness of the sheet molding compound instantly, without requiring any temperature differential to force heat by conduction from the surface to the center.

Capable of preheating SMC loads up to 30 inch W x 84 inch L in under one minute, the Macrowave SMC Preheater has a PLC which controls the heat cycle time, power level, and conveyor movement to synchronize with the press operation. The conveyor can either feed the SMC charge straight through the press or return it to the feed end after heating. 

This story is reprinted from material from Radio Frequency with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.