The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2013
Filed:
Dec. 27, 2008
Werner Hoffman, Eppingen, DE;
Ulf Konekamp, Karlsruhe, DE;
Gernot Von Haas, Heidelberg, DE;
Dieffenbacher GmbH Maschinen-und Anlagenbau, Eppingen, DE;
Abstract
The invention relates to a method for preheating a pressed material mat () spread on an endlessly and continuously circulating molding band () during manufacture of wood material boards, wherein microwaves from one or both press surface sides are beamed into the pressed material mat () to preheat the pressed material mat () and the pressed material mat () is compacted and hardened by application of pressure and heat after transfer to a continuously operating press (). The invention consists of microwaves in a frequency range of 2400-2500 MHz being used to heat the pressed material mat (), wherein the microwaves for each press surface side are generated from 20 to 300 microwave generators () with magnetrons () of a respective output of 3 to 50 kW. A device for preheating pressed material mats () is also provided, in which 20 to 300 microwave generators () with magnetrons () with an output of 3 to 50 kW and with a frequency range of 2400-2500 MHz are arranged in a conveyor furnace () per area side.