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Microwave interactive laminate

DC
  • US 4,865,921 A
  • Filed: 06/10/1988
  • Issued: 09/12/1989
  • Est. Priority Date: 03/10/1987
  • Status: Expired due to Term
First Claim
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1. 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+4, amines and hydroxy amines, and dilute bases, dilute acids, metal salts, and mixtures thereof followed by drying.

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