Microwave corn popping package

Claim 1

A nestable and disposable corn-popping package which requires no manipulation prior to popping corn in a microwave oven comprising, a tub-shaped container comprising a sheet of stiff or semi-flexible paper or paperboard closed upon itself in the form of an upright tube which defines upstanding side walls that slope outwardly toward the top to permit nesting of a plurality of such packages within one another during shipment and storage, the side wall terminates at the top in a free edge which defines an upper open wide mouth for the package, the side wall has a lower edge which rests on the floor of the microwave oven during cooking, a generally horizontal bottom wall having an edge connected to the side wall at an elevation spaced upwardly from the bottom edge of the side wall to define an upper food containing compartment and a lower compartment within the confines of the side wall between the bottom wall of the package and the floor of the microwave oven, a layer of microwave interactive suseptor material connected to the bottom wall and being distributed thereacross, the lower edge of the side wall is substantially continuous and uninterrupted to provide sealing engagement with the floor of the microwave oven to define a sealed compartment containing air which during cooking becomes heated above the temperature of the surrounding air in the oven, a layer of popcorn resting on the bottom wall within the upper compartment of the tub in heat conductive relationship with the suseptor and, a flexible cover formed from a microwave transparent material having a peripheral edge sealed to the upper wide mouth, said flexible cover being secured only to the upper free edge of the side wall and depending downwardly therefrom into the package, the flexible cover conforming to the inner aspect of the side wall and conforming substantially to the upper surface of the popcorn to provide a hollow space of substantial size within the package into which a similar container can be nested during stacking of said containers.