Patterned microwave susceptor
AssigneeGraphic Packaging Corporation
InventorsLorin R. Cole, Terrence P. Lafferty
Life of this patent
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Abstract
The heating effect of a microwave susceptor can be improved by providing a pattern of microwave transparent areas in the susceptor. The transparent areas are preferably circles having a diameter of about 0.5 inch. The distance between adjacent circles is preferably about 0.5 inch. The susceptor may be used to brown and crispen the crust of frozen pizza heated in a microwave oven. The crust of the pizza is browner, especially at its central area, than the crust of pizza heated using a conventional susceptor.
Claims14
In an imperforate microwave susceptor comprising a layer of metallized plastic film laminated to a dimensionally stable substrate, the improvement wherein the susceptor has a pattern of substantially transparent circles in the layer of metal on the plastic film that enhances the heating effect of the susceptor in the central area of the susceptor, with each circle having a diameter of about 1.3 cm, the distance between adjacent circles being between about one and three cm, and the susceptor being electrically continuous.
A microwave susceptor comprising:
- a dimensionally stable substrate;
- and
- a generally continuous layer of metallized plastic film laminated to the substrate to form a microwave susceptor, the film having spaced-apart microwave-transparent areas within one generally continuous microwave-interactive area for enhancing the heating effect of the susceptor, each of the transparent areas having a major linear dimension of about one eighth an operating wavelength of a microwave oven.
Dependencies are inferred from the claim text.