Heaters for use in microwave ovens
First Claim
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1. A microwave interactive heating element comprising a microwave transparent substrate coated with a microwave interactive coating composition comprising finely divided carbon, a finely divided microwave reactive metal, a finely divided inert solid, and a resinous binder.
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Abstract
A microwave interactive coating composition and microwave reactive paper and paperboard heaters comprising the coating composition are disclosed. The coating compositions which comprise finely divided carbon, a finely divided microwave reactive metallic component, a powdered inert solid and a binder are capable of producing microwave reactive heaters comparable to those produced by vapor deposition of metals on a carrier film.
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Citations
16 Claims
- 1. A microwave interactive heating element comprising a microwave transparent substrate coated with a microwave interactive coating composition comprising finely divided carbon, a finely divided microwave reactive metal, a finely divided inert solid, and a resinous binder.
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16. A microwave interactive heating element comprising paper or paperboard coated with from about 2 to about 20 pounds per 3000 square feet of a microwave interactive composition comprising from about 15 to about 30 weight percent carbon black, from about 15 to about 30 percent by weight aluminum flake, from about 10 to about 35 weight percent inert pigment and from about 30 to about 40 weight percent acrylic solids.
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