Microwave cooking packages and methods of making thereof
First Claim
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1. A self-sealing microwave package comprising:
- a flexible sheet having a first side and a second side opposite the first side, the sheet having an activatable adhesive region on at least one of the first side and the second side of the sheet, wherein the sheet includesa susceptor film comprising a microwave energy interactive material supported on a first polymer film layer,a moisture-containing layer superposed with the microwave energy interactive material, anda second polymer film layer joined to the moisture-containing layer in a predetermined pattern, thereby forming at least one closed cell between the moisture-containing layer and the second polymer film layer, wherein the moisture-containing layer is positioned between the microwave energy interactive material and the second polymer film layer.
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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.
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Citations
33 Claims
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1. A self-sealing microwave package comprising:
a flexible sheet having a first side and a second side opposite the first side, the sheet having an activatable adhesive region on at least one of the first side and the second side of the sheet, wherein the sheet includes a susceptor film comprising a microwave energy interactive material supported on a first polymer film layer, a moisture-containing layer superposed with the microwave energy interactive material, and a second polymer film layer joined to the moisture-containing layer in a predetermined pattern, thereby forming at least one closed cell between the moisture-containing layer and the second polymer film layer, wherein the moisture-containing layer is positioned between the microwave energy interactive material and the second polymer film layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A self-sealing microwave package comprising:
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a flexible sheet including a first surface, a second surface opposite the first surface, and a plurality of peripheral edges including a first edge and a second edge opposite the first edge; an activatable adhesive overlying at least a portion of the first surface proximate the first edge, the activatable adhesive becoming tacky in response to heat, wherein the sheet includes a layer of microwave energy interactive material supported on a first polymer film layer, a moisture-containing layer joined to the layer of microwave energy interactive material, and a second polymer film layer joined to the moisture-containing layer in a patterned arrangement that defines a plurality of closed cells between the moisture-containing layer and the second polymer film layer, wherein the moisture-containing layer is positioned between the microwave energy interactive material and the second polymer film layer. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A self-sealing microwave package comprising, in a layered configuration:
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a first polymer film layer; a layer of microwave energy interactive material; a substantially continuous adhesive layer; a moisture-containing layer; a patterned adhesive layer; and a second polymer film layer, wherein the patterned adhesive layer adjoins the moisture-containing layer and the second polymer film layer and defines a plurality of substantially vapor-impermeable closed cells between the moisture-containing layer and the second polymer film layer, at least some of the closed cells expand upon sufficient exposure of the package to microwave energy, the first polymer film layer and the second polymer film layer respectively define a first surface and a second surface of the package, an activatable adhesive overlies at least a portion of at least one of the first surface and the second surface, and the tackiness of the activatable adhesive increases in response to heat. - View Dependent Claims (24, 25)
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26. A self-sealing microwave packaging material comprising:
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a flexible sheet having a first side and a second side opposite the first side, the sheet including a layer of microwave energy interactive material that converts at least a portion of impinging microwave energy into thermal energy; and an activatable adhesive region on at least one of the first side and the second side of the sheet, the activatable adhesive region comprising an adhesive material that is substantially nontacky prior to being heated in a microwave oven, wherein the sheet is adapted to enwrap a food item with at least a portion of the activatable adhesive region in a substantially contacting relationship with another portion of the sheet, such that upon sufficient heating in a microwave oven, the adhesive material adheres to the other portion of the sheet and maintains the microwave energy interactive material in proximity to the food item. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
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Specification