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US 4,963,424 AGranted
Microwave heating material
AssigneeBeckett Industries Inc.
InventorDonald G. Beckett
Life of this patent
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Abstract
Novel laminate structures incorporating a thin metal layer which is of a thickness capable of converting incident microwave energy into thermal energy. The thin metal layer produces a greater heating effect than is produced by the same metal layer directly supported on a polymeric film layer. The laminate is useful in the microwave heating of a variety of food products.
Claims9
A laminate structure, comprising:
- a non-conductive, heat-stable substrate layer,
- a metal layer adhered to said substrate layer and having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy, and
- a lacquer layer completely overlying said metal layer and said substrate layer and having the same dimensions as said substrate layer and hence is coincident therewith.
A laminate structure, comprising:
- a non-conductive, heat-stable substrate layer,
- a metal layer adhered to said substrate layer and having a thickness effective to convert a portion of microwave energy incident thereon to thermal energy,
- a lacquer layer overlying at least a portion of said metal layer, and
- a layer of polymeric material completely overlying said metal layer and said lacquer layer and having the same dimensions as the substrate layer and hence is coincident therewith.
1 more element
Dependencies are inferred from the claim text.