Abstract: A package configured to receive a food item for storage and heating therein is disclosed. The package includes an opening and a closure mechanism and comprises an insulating microwave material. A plurality of packages in a stacked relation also is provided.

Abstract: A microwave energy interactive structure comprises a polymer film having a birefringence (nz?nx) of less than about 0.15, and a layer of microwave energy interactive material on the polymer film. The layer of microwave energy interactive material is operative for converting at least a portion of impinging microwave energy into thermal energy.

Abstract: A microwave energy interactive structure comprises a polymer film having a crystallinity of less than about 50%, and a layer of microwave energy interactive material on the polymer film. The layer of microwave energy interactive material is operative for converting at least a portion of impinging microwave energy into thermal energy.

Abstract: A microwave energy interactive structure comprises a polymer film having a pair of opposed sides, a first side of the pair of opposed sides being plasma treated, and a layer of microwave energy interactive material supported on the first side of the polymer film.

Abstract: A microwave insulating material includes a dimensionally stable support, a patterned adhesive layer overlying at least a portion of the support, a polymer film layer overlying the patterned adhesive layer, and a plurality of expandable cells disposed between the support and the polymer film layer and defined by the patterned adhesive layer, wherein the expandable cells vary in size. A self-sealing microwave package includes a sheet of insulating material including a first surface, and a thermally activatable adhesive applied to at least a portion of the first surface.

Abstract: A microwave insulating material includes a dimensionally stable support, a patterned adhesive layer overlying at least a portion of the support, a polymer film layer overlying the patterned adhesive layer, and a plurality of expandable cells disposed between the support and the polymer film layer and defined by the patterned adhesive layer, wherein the expandable cells vary in size. A self-sealing microwave package includes a sheet of insulating material including a first surface, and a thermally activatable adhesive applied to at least a portion of the first surface.

Abstract: A package configured to receive a food item for storage and heating therein is disclosed. The package includes an opening and a closure mechanism and comprises an insulating microwave material. A plurality of packages in a stacked relation also is provided.

Abstract: A container (2) for heating popcorn or other types of particulate food items in a microwave oven formed from a single blank having a bottom panel (4) coated with a microwave interactive material (26) adding heat to particulate food items such as popcorn kernels and configured so that each particulate food item placed into the container (2) for heating is spaced, on average, no more than the average diameter of one such food item away from the microwave interactive layer. The container is formed for shipping in a triangular wedge shape and for expansion to a trapezoidal box shape for use within a microwave oven for heating of the particulate food items.

Abstract: A container (2) for heating popcorn or other types of particulate food items in a microwave oven formed from a single blank having a bottom panel (4) coated with a microwave interactive material (26) adding heat to particulate food items such as popcorn kernels and configured so that each particulate food item placed into the container (2) for heating is spaced, on average, no more than the average diameter of one such food item away from the microwave interactive layer. The container is formed for shipping in a triangular wedge shape and for expansion to a trapezoidal box shape for use within a microwave oven for heating of the particulate food items.

Abstract: A container (2) for heating popcorn or other types of particulate food items in a microwave oven formed from a single blank having a bottom panel (4) coated with a microwave interactive material (26) adding heat to particulate food items such as popcorn kernels and configured so that each particulate food item placed into the container (2) for heating is spaced, on average, no more than the average diameter of one such food item away from the microwave interactive layer. The container is formed for shipping in a triangular wedge shape and for expansion to a trapezoidal box shape for use within a microwave oven for heating of the particulate food items.