A microwave energy interactive heating sheet includes at least two layers of microwave energy interactive insulating material joined to one another, where each layer includes microwave energy interactive material supported on a first polymer film layer, a support layer joined to the microwave energy
A microwave energy interactive heating sheet includes at least two layers of microwave energy interactive insulating material joined to one another, where each layer includes microwave energy interactive material supported on a first polymer film layer, a support layer joined to the microwave energy interactive material, and a second polymer film layer joined to the support layer in a predetermined pattern, so that a plurality of expandable cells are defined between the support layer and the second polymer film layer. The expandable cells are operative for inflating upon sufficient exposure to microwave energy.
대표청구항▼
1. A microwave heating sheet comprising: at least two layers of microwave energy interactive insulating material joined to one another, the at least two layers of microwave energy interactive insulating material each comprising microwave energy interactive material supported on a first polymer film
1. A microwave heating sheet comprising: at least two layers of microwave energy interactive insulating material joined to one another, the at least two layers of microwave energy interactive insulating material each comprising microwave energy interactive material supported on a first polymer film layer,a support layer joined to the microwave energy interactive material, anda second polymer film layer joined to the support layer in a predetermined pattern, so that a plurality of expandable cells are defined between the support layer and the second polymer film layer,wherein the expandable cells are operative for inflating upon sufficient exposure to microwave energy. 2. The microwave heating sheet of claim 1, wherein the at least two layers of microwave energy interactive insulating material define a cavity for receiving a food item. 3. The microwave heating sheet of claim 2, wherein in a first configuration, the at least two layers of microwave energy interactive insulating material are for enwrapping the food item within the cavity, andin a second configuration, the at least two layers of microwave energy interactive insulating material are for being positioned beneath the food item. 4. The microwave heating sheet of claim 1, wherein the at least two layers of microwave energy interactive insulating material are dimensioned so that a peripheral margin of the microwave heating sheet is for extending beyond a periphery of a food item seated on the microwave heating sheet. 5. The microwave heating sheet of claim 4, wherein the peripheral margin of the heating sheet is for extending upwardly around at least a portion of the periphery of the food item upon sufficient exposure to microwave energy. 6. The microwave heating sheet of claim 1, in combination with a dimensionally stable component. 7. The combination of claim 6, wherein in a first configuration, the microwave heating sheet is for enwrapping the food item, andin a second configuration, the microwave heating sheet is for being positioned beneath the dimensionally stable component, so that the dimensionally stable component is for being positioned between the food item and the microwave heating sheet. 8. The microwave heating sheet of claim 1, in combination with a food item and a dimensionally stable component in a packaging arrangement, wherein the microwave energy interactive heating sheet is positioned between the food item and the dimensionally stable component. 9. The microwave heating sheet of claim 1, in combination with a food item and a dimensionally stable component in a packaging arrangement, wherein the dimensionally stable component is positioned between the food item and the microwave heating sheet. 10. The microwave heating sheet of claim 1, in combination with a food item and a dimensionally stable component in a packaging arrangement, wherein the food item is positioned between the dimensionally stable component and the microwave heating sheet. 11. The combination of claim 10, wherein the microwave heating sheet includes at least one of printed graphics and printed text. 12. The combination of claim 10, wherein the microwave heating sheet is in a folded configuration. 13. The combination of claim 10, wherein the microwave heating sheet is at least partially joined to the dimensionally stable component. 14. The combination of claim 10, wherein the dimensionally stable component is substantially transparent to microwave energy. 15. The combination of claim 10, wherein the dimensionally stable component has a substantially planar configuration. 16. The combination of claim 10, wherein the dimensionally stable component comprises a disk. 17. The microwave heating sheet of claim 1, wherein the support layer of the at least two layers of microwave energy interactive insulating material independently comprises paper, paperboard, or a polymer film. 18. The microwave heating sheet of claim 1, wherein the microwave energy interactive material is operative for heating in response to microwave energy. 19. A microwave heating sheet, in combination with a food item and a dimensionally stable component in a packaging arrangement, the microwave heating sheet comprising: a plurality of layers of microwave energy interactive insulating material joined to one another, the plurality of layers of microwave energy interactive insulating material each comprising a layer of microwave energy interactive material supported on a first polymer film layer, the layer of microwave energy interactive material being operative for converting microwave energy to heat,a support layer joined to the microwave energy interactive material, anda second polymer film layer joined to the support layer in a predetermined pattern, so that a plurality of expandable cells are defined between the support layer and the second polymer film layer,wherein the expandable cells are operative for inflating upon sufficient exposure to microwave energy. 20. The combination of claim 19, wherein the microwave heating sheet is positioned between the food item and the dimensionally stable component. 21. The combination of claim 19, wherein the dimensionally stable component is positioned between the food item and the microwave energy interactive heating sheet. 22. The combination of claim 19, wherein the food item is positioned between the dimensionally stable component and the microwave heating sheet. 23. The combination of claim 22, wherein the microwave heating sheet includes at least one of printed graphics and printed text. 24. The combination of claim 22, wherein the microwave heating sheet is in a folded configuration. 25. The combination of claim 19, wherein the food item is positioned between the plurality of layers of microwave energy interactive insulating material. 26. A method of using the combination of claim 25, wherein the food item has a bottom surface that is desirably at least one of browned and crisped, the method comprising: removing the food item from between the plurality of layers of microwave energy interactive insulating material; positioning the food item on the microwave heating sheet so that the microwave energy interactive material of at least one of the plurality of layers of microwave energy interactive insulating material is proximate to the food item; and exposing the food item on the microwave heating sheet to microwave energy so that the microwave energy interactive material converts the microwave energy to heat, and the expandable cells inflate so that microwave energy interactive material is urged towards the food item to at least one of brown and crisp the bottom of the food item. 27. A method of using the combination of claim 19, wherein the food item has a bottom surface that is desirably at least one of browned and crisped, the method comprising: positioning the food item on the microwave heating sheet so that the microwave energy interactive material of at least one of the plurality of layers of microwave energy interactive insulating material is proximate to the food item; and exposing the food item on the microwave heating sheet to microwave energy so that the microwave energy interactive material converts the microwave energy to heat, and the expandable cells inflate so that microwave energy interactive material is urged towards the food item to at least one of brown and crisp the bottom of the food item. 28. The method of claim 27, wherein the food item has a periphery that is desirably at least one of browned and crisped, and a peripheral margin of the microwave heating sheet extends beyond the periphery of the food item positioned on the microwave heating sheet, so that the inflating of the expandable cells urges the expandable cells of the peripheral margin of the microwave heating sheet upwardly around at least a portion of the periphery of the food item to at least one of brown and crisp the periphery of the food item. 29. The method of claim 27, further comprising positioning the food item on the microwave heating sheet on the dimensionally stable component before exposing the food item on the microwave heating sheet to microwave energy. 30. A method of using the combination of claim 19, comprising: positioning the food item on the dimensionally stable component; positioning the dimensionally stable component on the microwave heating sheet; and exposing the food item on the dimensionally stable component and the microwave heating sheet to microwave energy so the microwave energy interactive material converts the microwave energy to heat and the expandable cells inflate.
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