H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/2.42
H05B 6/64 (2006.01) B65D 81/34 (2006.01)
Patent
CA 1316992
SUSCEPTOR FOR HEATING FOODS IN A MICROWAVE OVEN HAVING METALLIZED LAYER DEPOSITED ON PAPER ABSTRACT A susceptor for heating a food substance in a microwave oven is disclosed which has a thin film of metal deposited on a dimensionally stable dielectric substrate, such as paper. Substrates having a rough surface may be used. Preferably, the susceptor has a complex impedance measured prior to heating, at the frequency of the micro- wave oven, which has a real part between 30 and 2000 ohms per square. The preferred thickness of the thin metal film is related to the smoothness of the paper substrate. A substrate having a surface smoothness, expressed as an arithmetic average roughness, greater than 0.5 microns may be used with the present invention. The metal film is preferably aluminum having a thickness between 50 Angstroms and 600 Angstroms. The substrate may be coated with coatings such as clay. Clay coated paper substrates having a thin film of metal deposited thereon exhibit improved stability of performance characteristics during microwave heating.
600430
Kemske Jonathan D.
Lorence Matthew W.
Perry Michael R.
Pesheck Peter S.
Shevlin Craig
Blake Cassels & Graydon Llp
The Pillsbury Company
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