Localized microwave radiation heating
AssigneeDennison Manufacturing Company
InventorsLaurence E. Tighe, Tim Parker
Life of this patent
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Abstract
A medium formed by a mixture of polymeric binder with conductive and semiconductive particles that can be coated or printed on a substrate to convert electromagnetic radiation to heat without arcing and produce increase heating of foods. Conversion efficiency can be controlled by the choice, thickness, pattern and amount of materials used in the medium. The medium can be used repeatedly without burn out. The conductive particles are typically aluminum, copper, zinc and nickel and the semiconductive particles are typically carbon, titanium carbide and zinc oxide.
Claims20
A microwave susceptor medium which can be coated or selectively printed on a substrate for controlled conversion of microwave radiation to heat without causing arcing during use comprising:
- a fluid medium comprising a heat resistant polymeric binder and a filler comprising metallic and semiconductor substances dispersed in said fluid medium;
- wherein said metallic and semiconductor substances are in particulate form, said susceptor having the property that it is heated to a temperature of at least 375.degree. F. within about 4 minutes when exposed to microwave radiation at 700 watts power output.
A microwave susceptor coating panel which comprises
- a heat resistant substrate and a susceptor coated on said substrate;
- said susceptor coating comprising a combination of semiconductor particles and metallic particles and a heat resistant polymeric binder wherein said coating converts microwave radiation to heat sufficient to cause heating to a temperature of at least 375.degree. F. within about 4 minutes at a conventional microwave power output level of 700 watts at a frequency of 2450 Megahertz.
Dependencies are inferred from the claim text.