04230924 is referenced by 192 patents and cites 6 patents.

The food package includes a flexible wrapping sheet of dielectric material, such as polyester or paperboard, capable of conforming to at least a portion of the article of food's shape. The dielectric wrapping sheet has a flexible metallic coating thereon, such as aluminum, in the form of a relatively thin film or relatively thick foil, the coating being subdivided into a number of individual metallic islands or pads separated by criss-crossing non-metallic gaps provided by exposed dielectric strips on the wrapping sheet. When the food package is placed in a microwave oven, some of the microwave energy passes through the wrapping sheet so as to dielectrically heat the food item, but a lesser amount of the microwave energy is converted into thermal energy by the metallic coating so as to brown or crispen that portion of the food adjacent thereto. Various degrees of microwave transparency can be incorporated into the metallic coating so that a desired or preferred amount of browning is realized by the time that the particular item of packaged food is fully heated or cooked.

Title
Method and material for prepackaging food to achieve microwave browning
Application Number
910262
Publication Number
4230924
Application Date
October 12, 1978
Publication Date
October 28, 1980
Inventor
Nelson J Beall
St. Michael
MN, US
William A Brastad
Minneapolis
MN, US
Agent
L MeRoy Lillehaugen
Gene O Enockson
Assignee
General Mills
MN, US
IPC
B65D 81/34
H05B 6/80
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