The Pillsbury Company

Jonathan D Kemske

Michael R Perry

Peter S Pesheck

Dan J Wendt

Diane R Rosenwald

Matthew Woodard Lorence

James R Consaul

Robert B Shomo, Jr

Craig Shevlin

A packaging system is disclosed which includes a susceptor heating means having selective responsiveness to microwave radiation. The susceptor surface has a plurality of regions, where at least one region has an altered responsiveness to microwave radiation which is achieved by disruptions in the susceptor surface. A method for making regions of a susceptor selectively responsive to microwave heating by disrupting the continuity of the metallized film of the susceptor is also disclosed.

Susceptors having disrupted regions for differential heating in a

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. Substrate having a rough surface may be used. Preferably, the susceptor has a complex impedance measured prior to heating, at the frequency of the microwave 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.

Susceptor for heating foods in a microwave oven having metallized layer

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White Bear, MN, United States of America

Jonathan D Kemske