H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/2.2
H05B 6/64 (2006.01)
Patent
CA 2022945
MICROWAVE CURING SYSTEM ABSTRACT OF THE DISCLOSURE A system for the simultaneous application of pressure and microwaves to a thick mat of curable assemblies. As the curable assemblies are conveyed through a belt press, microwaves are applied to them through an adjacent, rapidly expanding applicator horn. A microwave-transparent ceramic dam or window across the outlet of the horn blocks the compressed assemblies from entering the horn. To minimize any heat cracking of the window it is formed of a num- ber of pieces. These pieces are held in place at the horn outlet by fins secured within the horn and protruding into the window. The fins extend across the interior of the horn and divide it into a number of different microwave paths. The ceramic window pieces at the ends of the paths are carefully shaped to act as lenses and to act on the microwave energy from each of the different paths so that the micro- waves from all of the paths are in phase at the product interface. Air is pumped through a serpentine path in the window to cool it and help prevent cracking thereof.
Churchland Mark T.
Macmillan Bloedel Limited
Sim & Mcburney
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