초록 ▼

A method is described for achieving selective generation of thermal energy from a thin metal film upon exposure to microwave energy. A deactivating material is first applied to a substrate from the thin metal film in a pattern corresponding to the region from which heat is not to be generated. The m

A method is described for achieving selective generation of thermal energy from a thin metal film upon exposure to microwave energy. A deactivating material is first applied to a substrate from the thin metal film in a pattern corresponding to the region from which heat is not to be generated. The metal then is applied over the substrate and the pattern in a thickness which normally generates thermal energy upon exposure to microwave energy. Such thermal energy is produced only from those regions where the metal is adhered directly to the substrate.

대표청구항 ▼

A method of making a product capable of converting microwave energy to thermal energy from a portion only of the surface thereof upon the application of microwave energy thereto, which comprises: providing a substrate of dielectric material which is capable of supporting a thin film of electroconduc

A method of making a product capable of converting microwave energy to thermal energy from a portion only of the surface thereof upon the application of microwave energy thereto, which comprises: providing a substrate of dielectric material which is capable of supporting a thin film of electroconductive metal thereon, wherein said film is sufficiently thin to produce thermal energy when exposed to microwave energy, applying in a desired pattern to a surface of said substrate a deactivating material which, when said electroconductive metal is subsequently positioned thereon, inhibits the generation of heat from said electroconductive metal when exposed to microwave energy, said deactivating material being an aqueous solution of sodium hydroxide which is dried to provide a rough surface on said substrate in said desired pattern prior to subsequent application of said electroconductive metal thereto, and applying to said surface of said substrate bearing said pattern a thin film of an electroconductive metal of a thickness effective to produce thermal energy when exposed to microwave radiation and not in contact with said deactivating material, whereby the resulting product is capable of producing thermal energy from said electroconductive metal in those regions of said substrate where said electroconductive metal is directly supported thereon and thermal energy is not produced from said electroconductive metal in those regions of said substrate bearing said pattern of material.