Microwave energy interactive insulating sheet and system
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H05B-006/80
H05B-006/64
B65D-081/34
B65D-081/26
출원번호
US-0535949
(2009-08-05)
등록번호
US-8993947
(2015-03-31)
발명자
/ 주소
Cole, Lorin R.
출원인 / 주소
Graphic Packaging International, Inc.
대리인 / 주소
Womble Carlyle Sandridge & Rice, LLP
인용정보
피인용 횟수 :
0인용 특허 :
63
초록▼
A microwave energy interactive insulating structure comprises 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, a second polymer film layer joined to the moisture-contain
A microwave energy interactive insulating structure comprises 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, a second polymer film layer joined to the moisture-containing layer in a predetermined pattern to define a plurality of closed cells between the moisture-containing layer and the second polymer film layer, and an aperture extending through the first polymer film layer, the moisture-containing layer, and the second polymer film layer.
대표청구항▼
1. A microwave energy interactive insulating structure comprising: 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;a second polymer film layer joined to the moisture-cont
1. A microwave energy interactive insulating structure comprising: 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;a second polymer film layer joined to the moisture-containing layer such that the moisture-containing layer is positioned between the microwave energy interactive material and the second polymer film layer, the second polymer film layer being joined to the moisture-containing layer in a predetermined pattern to define a plurality of first cells between the moisture-containing layer and the second polymer film layer, the plurality of first cells comprising a plurality of second cells being adapted to inflate in response to sufficient exposure to microwave energy, and the predetermined pattern comprising a plurality of lines of adhesion disposed between the moisture-containing layer and the second polymer film layer; anda plurality of physical apertures extending through each of the first polymer film layer, the moisture-containing layer, and the second polymer film layer, the physical apertures being arranged so that the plurality of first cells further comprises a plurality of third cells that are interspersed among the second cells, whereinfor each third cell of the plurality of third cells, at least one physical aperture of the plurality of physical apertures extends at least partially through the third cell so that the at least one physical aperture inhibits any inflatability of the third cell,the plurality of third cells comprises a first one of the third cells and a second one of the third cells,the plurality of lines of adhesion comprises a first line of adhesion positioned between the first one of the third cells and the second one of the third cells, anda first physical aperture of the plurality of physical apertures is configured so that the first physical aperture extends at least partially through each of the first line of adhesion,the first one of the third cells, andthe second one of the third cells. 2. The microwave energy interactive insulating structure of claim 1, wherein a physical aperture of the plurality of physical apertures has a major linear dimension of about 0.25 inches. 3. The microwave energy interactive insulating structure of claim 1, wherein a physical aperture of the plurality of physical apertures has a major linear dimension of about 0.5 inches. 4. The microwave energy interactive insulating structure of claim 1, wherein at least some of the first cells have a major linear dimension of from about 0.5 to about 1.5 inches. 5. The microwave energy interactive insulating structure of claim 1, wherein the plurality of physical apertures includes a substantially centrally located physical aperture. 6. The microwave energy interactive insulating structure of claim 5, wherein the plurality of physical apertures includes a plurality of physical apertures disposed around the substantially centrally located physical aperture. 7. The microwave energy interactive insulating structure of claim 1, wherein the plurality of physical apertures is arranged in a random configuration. 8. The microwave energy interactive insulating structure of claim 1, wherein the microwave energy interactive material is operative for absorbing at least a portion of impinging microwave energy and converting it to thermal energy. 9. The microwave energy interactive insulating structure of claim 1, wherein the moisture-containing layer comprises at least one of paper and paperboard. 10. The microwave energy interactive insulating structure of claim 1, wherein the second polymer film layer comprises biaxially-oriented polyethylene terephthalate. 11. The microwave energy interactive insulating structure of claim in combination with a platform for elevating the food item, wherein the platform includes an aperture in a substantially aligned relationship with a physical aperture of the plurality of physical apertures of the microwave energy interactive insulating structure. 12. The combination of claim 11, wherein the platform includes a substantially planar portion and a plurality of downwardly extending support elements, the downwardly extending support elements defining a void beneath the substantially planar portion, andthe microwave energy interactive insulating structure overlies the substantially planar portion of the platform. 13. The combination of claim 12, wherein the microwave energy interactive insulating structure overlies the substantially planar portion of the platform so that the second polymer film layer is in a facing, at least partially contacting relationship with the platform. 14. The combination of claim 13 in combination with a food item, the food item having a bottom surface that is desirably at least one of browned and crisped, wherein the food item is positioned on the first polymer film layer of the microwave energy interactive insulating structure. 15. A system for heating a food item in a microwave oven, comprising: a microwave energy interactive insulating structure, including a susceptor film 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 at least a portion of impinging microwave energy into thermal energy,a moisture-containing layer joined to the layer of microwave energy interactive material,a second polymer film layer joined to the moisture-containing layer such that the moisture-containing layer is positioned between the microwave energy interactive material and the second polymer film layer, the second polymer film layer being partially joined to the moisture-containing layer to define a plurality of first cells between the moisture-containing layer and the second polymer film layer, the plurality of first cells comprising a plurality of second cells being adapted to inflate in response to sufficient exposure to microwave energy, the predetermined pattern comprising a plurality of lines of adhesion disposed between the moisture-containing layer and the second polymer film layer, anda plurality of physical apertures extending through the first polymer film layer, the moisture-containing layer, and the second polymer film layer, the physical apertures being arranged so that the plurality of first cells further comprises a plurality of third cells that are interspersed among the second cells, wherein for each third cell of the plurality of third cells, at least one physical aperture of the plurality of physical apertures extends at least partially through the third cell so that the at least one physical aperture inhibits any inflatability of the third cell,the plurality of third cells comprises a first one of the third cells and a second one of the third cells,the plurality of lines of adhesion comprises a first line of adhesion positioned between the first one of the third cells and the second one of the third cells, anda first physical aperture of the plurality of physical apertures is configured so that the first physical aperture extends at least partially through each of the first line of adhesion,the first one of the third cells, andthe second one of the third cells; anda platform for supporting the microwave energy interactive insulating structure in an elevated position, the platform including apertures respectively substantially aligned with the physical apertures of the microwave energy interactive insulating structure, wherein the platform includes a substantially planar portion and a plurality of downwardly extending support elements, the downwardly extending support elements defining a void beneath the substantially planar portion. 16. The microwave energy interactive insulating structure of claim 1, wherein the first physical aperture has a major linear dimension of about 0.25 inches. 17. The microwave energy interactive insulating structure of claim 1, wherein: the plurality of lines of adhesion further comprises a second line of adhesion,the second line of adhesion extends crosswise to the first line of adhesion,the plurality of third cells further comprises a third one of the third cells,the second line of adhesion is positioned between the first one of the third cells and the third one of the third cells, andthe first physical aperture extends at least partially through each of the second line of adhesion and the third one of the third cells. 18. The microwave energy interactive insulating structure of claim 1, wherein each of the first one of the third cells and the second one of the third cells has a major linear dimension of from about 0.5 to about 1.5 inches. 19. The microwave energy interactive insulating structure of claim 17, wherein the microwave energy interactive material is operative for absorbing at least a portion of impinging microwave energy and converting it to thermal energy. 20. The microwave energy interactive insulating structure of claim 17, wherein the first physical aperture has a major linear dimension of about 0.5 inches. 21. The microwave energy interactive insulating structure of claim 17, wherein: the plurality of third cells further comprises a fourth one of the third cells,the first line of adhesion is positioned between the third one of the third cells and the fourth one of the third cells,the second line of adhesion is positioned between the second one of the third cells and the fourth one of the third cells, andthe first physical aperture extends at least partially through the fourth one of the third cells. 22. The microwave energy interactive insulating structure of claim 21, wherein: the plurality of third cells further comprises a fifth one of the third cells and a sixth one of the third cells,the first line of adhesion is positioned between the fifth one of the third cells and the sixth one of the third cells, anda second physical aperture of the plurality of physical apertures is configured so that the second physical aperture extends at least partially through each of the first line of adhesion,the fifth one of the third cells, andthe sixth one of the third cells. 23. The microwave energy interactive insulating structure of claim 1, wherein: the plurality of third cells further comprises a third one of the third cells and a fourth one of the third cells,the first line of adhesion is positioned between the third one of the third cells and the fourth one of the third cells, anda second physical aperture of the plurality of physical apertures is configured so that the second physical aperture extends at least partially through each of the first line of adhesion,the third one of the third cells, andthe fourth one of the third cells. 24. The system of claim 15, wherein: the plurality of lines of adhesion further comprises a second line of adhesion,the second line of adhesion extends crosswise to the first line of adhesion,the plurality of third cells further comprises a third one of the third cells,the second line of adhesion is positioned between the first one of the third cells and the third one of the third cells, andthe first physical aperture extends at least partially through each of the second line of adhesion and the third one of the third cells. 25. The system of claim 24, wherein: the plurality of third cells further comprises a fourth one of the third cells,the first line of adhesion is positioned between the third one of the third cells and the fourth one of the third cells,the second line of adhesion is positioned between the second one of the third cells and the fourth one of the third cells, andthe first physical aperture extends at least partially through the fourth one of the third cells.
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