DEVICE FOR HEATING PRESS MATS IN THE MANUFACTURE OF DERIVED WOOD PANELS

摘要

The invention relates to a device for pre-heating press billets in the manufacture of derived wood panels or in the manufacture of laminated veneer panels, in which the press billet can be pre-heated by means of a microwave pre-heating device emitting microwave energy and after introduction into a single- or multi-stage press or in a continuously operating press can be pressed and cured with application of pressure and heat. In the invention, the microwave pre-heating device comprises a heating cell configured as a continuous feed-through oven, in which the input of the microwaves into the press billet is performed through successively-arranged rod antennas with reflector screens which are arranged horizontally and transversely to the flow of production above and/or below the press billet, with reflective surfaces assigned to each of the rod antennas on the opposite surfaces of the press billet.