Microwave interactive film, microwave interactive laminate and method for producing microwave interactive laminate

摘要

In a microwave cooking heater element comprising a heat stable plastic film coated with a very thin layer of microwave interactive material to form a microwave interactive film, the improvement is provided which comprises the presence in said very thin layer of 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 followed by drying. Furthermore, a microwave interactive laminate is provided which has been treated with an inactivating chemical, comprising said microwave interactive film and a substrate layer bonded to said microwave interactive film, wherein said very thin layer of microwave interactive material is between said heat stable plastic film and said substrate layer as well as a method for making such microwave interactive laminate.