EP 2247418 B1 20130522 - METHOD AND DEVICE FOR PREHEATING A PRESSED MATERIAL MAT DURING MANUFACTURE OF WOOD MATERIAL BOARDS
Title (en)
METHOD AND DEVICE FOR PREHEATING A PRESSED MATERIAL MAT DURING MANUFACTURE OF WOOD MATERIAL BOARDS
Title (de)
VERFAHREN UND VORRICHTUNG ZUR VORWÄRMUNG EINER PRESSGUTMATTE IM ZUGE DER HERSTELLUNG VON HOLZWERKSTOFFPLATTEN
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR PRÉCHAUFFER UNE NATTE DE MATÉRIAU À COMPRIMER, AU COURS DE LA FABRICATION DE PANNEAUX EN MATÉRIAU DÉRIVÉ DU BOIS
Publication
Application
Priority
- EP 2008011122 W 20081227
- DE 102007063374 A 20071230
Abstract (en)
[origin: CA2713382A1] The invention relates to a method for preheating a pressed material mat (14) spread on an endlessly and continuously circulating molding band (6) during manufacture of wood material boards, wherein microwaves from one or both press surface sides are beamed into the pressed material mat (14) to preheat the pressed material mat (14) and the pressed material mat (14) is compacted and hardened by application of pressure and heat after transfer to a continuously operating press (1). The invention consists of microwaves in a frequency range of 2400-2500 MHz being used to heat the pressed material mat (14), wherein the microwaves for each press surface side are generated from 20 to 300 microwave generators (26) with magnetrons (20) of a respective output of 3 to 50 kW. A device for preheating pressed material mats (14) is also provided, in which 20 to 300 microwave generators (26) with magnetrons (20) with an output of 3 to 50 kW and with a frequency range of 2400 - 2500 MHz are arranged in a conveyor furnace (4) per area side
IPC 8 full level
B27N 3/18 (2006.01); B27N 3/24 (2006.01); F26B 3/20 (2006.01); F26B 3/347 (2006.01); F26B 7/00 (2006.01); F26B 17/02 (2006.01)
CPC (source: EP US)
B27N 3/18 (2013.01 - EP US); B27N 3/24 (2013.01 - EP US); F26B 3/20 (2013.01 - EP US); F26B 3/347 (2013.01 - EP US); F26B 7/00 (2013.01 - EP US); F26B 17/026 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102007063374 A1 20090702; BR PI0821620 A2 20150616; BR PI0821620 B1 20190507; CA 2713382 A1 20090709; CA 2713382 C 20160705; CN 101932413 A 20101229; CN 101932413 B 20140716; EP 2247418 A1 20101110; EP 2247418 B1 20130522; PL 2247418 T3 20131031; RU 2010132157 A 20120210; RU 2493959 C2 20130927; US 2011089611 A1 20110421; US 8540924 B2 20130924; WO 2009083247 A1 20090709
DOCDB simple family (application)
DE 102007063374 A 20071230; BR PI0821620 A 20081227; CA 2713382 A 20081227; CN 200880126125 A 20081227; EP 08869105 A 20081227; EP 2008011122 W 20081227; PL 08869105 T 20081227; RU 2010132157 A 20081227; US 81110908 A 20081227