| 摘要 |
<p>The invention relates to an appliance for heating an electroconductive material, preferably one which hardens as a result of this heating process, this material being in the form of a continuous strand which is guided inside a channel. In this appliance, a high-frequency generator feeds a capacitor assembly which includes two capacitor-plates arranged on two oppositely-located sides of the channel formed by four synchronously driven insulating belts. These capacitor-plates are staggered by at least their length and are connected to a non-earthed terminal of the high-freqency generator. The capacitor assembly includes two further capacitor-plates are arranged on each of the two sides, adjacent to the two capacitor-plates, these further capacitor-plates being connected to the earthed terminal of the highfrequency generator and extending along the channel for a distance such that the strand outside the heating zone is no longer at a potential higher than ground. The appliance can be used, in particular, in a belt-type continuous--moulding unit for the manufacture of blanks for building materials, starting from a raw mixture having a high dielectric coefficient.</p> |
