A process in which the heating effect is produced electrostatically. The chief objective of the process is to obtain uniform heating throughout a mass of material which is a non-conductor of electricity, and hence a non-conductor of heat. To achieve this objective, the non-conducting material to be heated is used to form the dielectric of a condenser, with the electrodes consisting of conductive surfaces, one on each face of the material. Several thousand volts and a frequency in the range of 1.5 to 10 MHz are employed. The heat is generated by the agitation of the molecules when subjected to the high frequency field, unlike the hysteresis effect occurring in induction heating. The energy of agitation is converted into heat, which is uniformly distributed throughout the mass of the material.
