Microwave interactive laminate
AssigneeJames Riker Corporation of Virginia
InventorsDavid H. Hollenberg, Leon Katz
Life of this patent
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Abstract
Process for chemically modifying microwave interactive film and chemically modified microwave interactive film, chemically modified microwave interactive laminates and packages containing chemically modified microwave interactive film.
Claims24
In a microwave heater element which comprises a heat stable plastic film coated with a microwave interactive material to form a microwave interactive film, the improvement which comprises and interactivated area in said microwave interactive material wherein the capability of said inactivated area to generate heat in response to microwave energy has been reduced by treatment with an inactivating chemical selected from the group consisting of aqueous solutions of chelating agents, Zr.sup.+4, amines and hydroxy amines, and dilute bases, dilute acids, metal salts, and mixtures thereof followed by drying.
A microwave interactive laminate which has been treated with an inactivating chemical, comprising:
- a microwave interactive film layer which comprises a heat stable plastic film coated with a microwave interactive material having an inactivated area wherein the capability of said inactivated area to generate heat in response to microwave energy has been reduced by treatment with an inactivating chemical selected from the group consisting of aqueous solutions of chelating agents, Zr.sup.+4, amines and hydroxy amines, and dilute bases, dilute acids, metal salts, and mixtures thereof followed by drying, and
- a substrate layer bonded to said microwave interactive film layer to form a microwave interactive laminate, wherein said microwave interactive material is disposed between said heat stable plastic film layer and said substrate layer.
Dependencies are inferred from the claim text.