Printed microwave susceptor and packaging containing the susceptor
AssigneeUnion Camp Corporation
InventorRobert J. Babbitt
Life of this patent
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Abstract
A susceptor for use in microwave heating and a method of manufacturing a susceptor for use in microwave heating are shown to include a substrate and a coating of electrically conductive particles applied to the substrate in a pattern that results in a distribution of microwave energy across the pattern so that burning or charring of the substrate is substantially prevented. The coating is an ink coating and the ink coating is applied to the substrate in a printing operation. The pattern is shown to include a plurality of subpatterns located within an effective heating area wherein the positioning of subpatterns is sufficient to radiate the desired heat without burning.
Claims37
A susceptor for use in microwave heating, comprising:
- a substrate;
- and
- a coating of electrically conductive carbon particles selectively applied only to predetermined areas of said substrate in a pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate.
A method of manufacturing a susceptor for use in microwave heating, comprising the steps of:
- providing a substrate;
- providing a coating composition comprising a suspension of electrically conductive carbon particles;
- and
- selectively printing a pattern only on predetermined areas of said substrate with said coating composition, said pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate.
A method of heating an article in a microwave oven, comprising the steps of:
- confronting at least a surface portion of the article to be heated with a susceptor, said susceptor comprising a substrate and an ink coating selectively applied only to predetermined areas of said substrate in a pattern, said ink coating comprising electrically conductive carbon particles and said pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate;
- and
- subjecting said article and susceptor to microwave radiation.
A method of manufacturing a susceptor for use in microwave heating, comprising the steps of:
- mixing carbon based black particles with a vehicle to form a susceptor ink;
- selectively applying said susceptor ink only to predetermined areas of a substrate by printing a pattern on said substrate, said pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate;
- and
- drying said susceptor ink after application to said substrate.
A susceptor for use in microwave heating, comprising:
- a first layer;
- a printed coating of electrically conductive carbon particles selectively applied only to predetermined areas of said first layer so as to form a pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate;
- and
- a second layer adhered to said first layer so as to cover said printed coating.
A bag for use in microwave packaging, comprising:
- a substrate which has been formed into a bag structure;
- and
- a printed coating of electrically conductive carbon particles selectively applied only to predetermined areas of said substrate so as to form a pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate.
A package for use in microwave heating, comprising:
- a container formed from material which is substantially transparent to microwave energy;
- and
- a susceptor, positioned within said container, comprising a substrate and a printed coating of electrically conductive carbon particles selectively applied only to predetermined areas of said substrate so as to form a pattern having subpatterns in a spaced relationship adapted to distribute microwave energy across said pattern so as to substantially prevent burning of the substrate.
Dependencies are inferred from the claim text.