Microwave cooking packages and methods of making thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-001/02
B32B-001/08
출원번호
US-0854192
(2013-04-01)
등록번호
US-8828510
(2014-09-09)
발명자
/ 주소
Cole, Lorin R.
Bohrer, Timothy H.
Middleton, Scott W.
Robison, Richard G.
Lafferty, Terrence P.
O'Hagan, Brian R.
Wnek, Patrick H.
출원인 / 주소
Graphic Packaging International, Inc.
대리인 / 주소
Womble Carlyle Sandridge & Rice, LLP
인용정보
피인용 횟수 :
0인용 특허 :
151
초록▼
A package with self-forming insulating walls includes a tray for supporting a food item, a flap joined to the tray along a fold line, and an insulating microwave material overlying at least a portion of the tray and at least a portion of the flap. The insulating microwave material may be joined to t
A package with self-forming insulating walls includes a tray for supporting a food item, a flap joined to the tray along a fold line, and an insulating microwave material overlying at least a portion of the tray and at least a portion of the flap. The insulating microwave material may be joined to the flap. The insulating microwave material may include a microwave energy interactive material supported on a first polymer film layer, a moisture-containing layer joined to the microwave energy interactive material, and a second polymer film layer joined to the moisture-containing layer in a predetermined pattern, thereby defining a plurality of expandable cells between the moisture-containing layer and the second polymer film layer.
대표청구항▼
1. A microwave heating tray, comprising: a first panel and a second panel foldably joined to one another; andan insulating microwave material overlying the first panel and the second panel, wherein the insulating microwave material comprises microwave energy interactive material supported on a first
1. A microwave heating tray, comprising: a first panel and a second panel foldably joined to one another; andan insulating microwave material overlying the first panel and the second panel, wherein the insulating microwave material comprises microwave energy interactive material supported on a first polymer film layer,a dimensionally stable substrate joined to the microwave energy interactive material, anda second polymer film layer joined to the dimensionally stable substrate in a predetermined pattern so that expandable cells are defined between the dimensionally stable substrate and the second polymer film layer,wherein the insulating microwave material is joined to the second panel so that upon sufficient exposure to microwave energy, the expandable cells expand and the insulating microwave material contracts, wherein the contracting of the insulating microwave material moves the second panel from a first position substantially coplanar with the first panel to a second position oblique to the first panel. 2. The microwave heating tray of claim 1, wherein the insulating microwave material is joined to the second panel by an adhesive. 3. The microwave heating tray of claim 1, wherein the insulating microwave material is not joined directly to the second panel. 4. The microwave heating tray of claim 1, further comprising a third panel foldably joined to the first panel so that the third panel is opposite the second panel, wherein the insulating microwave material is joined to the third panel. 5. The microwave heating tray of claim 4, further comprising a fourth panel and a fifth panel foldably joined to the first panel so that the fourth panel and fifth panel are opposite one another, wherein the insulating microwave material is joined to the fourth panel and fifth panel. 6. The microwave heating tray of claim 1, wherein at least one of the first polymer film layer and the second polymer film layer comprises biaxially-oriented polyester. 7. The microwave heating tray of claim 1, wherein the dimensionally stable substrate comprises paper. 8. The microwave heating tray of claim 1, wherein the closed cell comprises moisture. 9. The microwave heating tray of claim 1, wherein the microwave energy interactive material is operative for heating in response to microwave energy. 10. The microwave heating tray of claim 1, in combination with a food item having a surface that is desirably at least one of browned and crisped, wherein the food item is seated on the insulating microwave material overlying the first panel. 11. The combination of claim 10, wherein the moving of the second panel from the first position to the second position brings the microwave energy interactive material closer to the surface of the food item. 12. A microwave heating tray, comprising: a main panel;a plurality of side panels foldably joined to the main panel; andan insulating microwave material overlying the main panel and the side panels, the insulating microwave material being connected to the side panels,wherein the insulating microwave material is operative for at least partially contracting in response to microwave energy, wherein the contracting of the insulating microwave material moves the side panels from a first position substantially coplanar with the main panel to a second position oblique to the main panel. 13. The microwave heating tray of claim 12, wherein the insulating microwave material is connected to the side panels by an adhesive. 14. The microwave heating tray of claim 12, wherein the insulating microwave material is not joined directly to the main panel. 15. The microwave heating tray of claim 12, wherein the main panel is substantially square in shape, andthe plurality of side panels comprises four side panels. 16. The microwave heating tray of claim 12, in combination with a food item, wherein the food item is seated on the insulating microwave material overlying the main panel. 17. The combination of claim 16, wherein the moving of the side panels from the first position to the second position brings the insulating microwave material overlying the side panels into closer proximity with the food item seated on the main panel. 18. The microwave heating tray of claim 12, wherein the insulating microwave material comprises microwave energy interactive material supported on a first polymer film layer,a dimensionally stable substrate joined to the microwave energy interactive material, anda second polymer film layer joined to the dimensionally stable substrate in a patterned configuration that defines closed cells between the dimensionally stable substrate and the second polymer film layer,wherein upon sufficient exposure to microwave energy, the closed cells expand and the second polymer film layer contracts so that the side panels are moved from the first position to the second position. 19. The microwave heating tray of claim 18, wherein at least one of the first polymer film layer and the second polymer film layer comprises biaxially-oriented polyester. 20. The microwave heating tray of claim 18, wherein the dimensionally stable substrate comprises paper. 21. The microwave heating tray of claim 18, wherein the closed cells comprise moisture. 22. The microwave heating tray of claim 18, wherein the microwave energy interactive material is operative for heating in response to microwave energy. 23. The microwave heating tray of claim 18, in combination with a food item having a surface that is desirably at least one of browned and crisped, wherein the food item is seated on the insulating microwave material overlying the main panel. 24. The combination of claim 23, wherein the moving of the side panels from the first position to the second position brings the microwave energy interactive material of the insulating microwave material overlying the side panels closer to the surface of the food item. 25. A microwave heating tray, comprising: a main panel having a substantially square shape, so that the main panel includes four peripheral edges;a side panel foldably joined to each of the four peripheral edges of the main panel; andan insulating microwave material overlying the main panel and each side panel, the insulating microwave material being connected to each side panel, wherein the insulating microwave material comprises microwave energy interactive material supported on a first polymer film layer,a paper layer joined to the microwave energy interactive material, anda second polymer film layer joined to the paper layer in a patterned configuration that defines a plurality of expandable cells between the paper layer and the second polymer film layer,wherein in response to sufficient exposure to microwave energy, the plurality of expandable cells expand and the insulating microwave material contracts, and the contracting of the insulating microwave material hinges each side panel toward the main panel.
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