Method and apparatus for cooking raw food items in a microwave oven
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H05B-006/80
H05B-006/76
H05B-006/64
A47J-036/02
B65D-081/34
출원번호
US-0371709
(2009-02-16)
등록번호
US-8901469
(2014-12-02)
발명자
/ 주소
Schneider, Lee M.
Lafferty, Terrence P.
Netzer, Philip E.
Wnek, Patrick H.
출원인 / 주소
Graphic Packaging International, Inc.
대리인 / 주소
Womble Carlyle Sandridge & Rice, LLP
인용정보
피인용 횟수 :
0인용 특허 :
73
초록▼
An apparatus for preparing a food item in a microwave oven comprises a tray including an interior space defined by a base and an upstanding peripheral wall, and a cover pivotably connected to the tray for pivoting the cover relative to the tray between an open position and a closed position. The tra
An apparatus for preparing a food item in a microwave oven comprises a tray including an interior space defined by a base and an upstanding peripheral wall, and a cover pivotably connected to the tray for pivoting the cover relative to the tray between an open position and a closed position. The tray and/or cover includes a plurality of protrusions extending into the interior space. A microwave energy interactive material overlies the protrusions on the tray and/or cover.
대표청구항▼
1. A microwave heating apparatus, comprising: a tray and a cover hingedly joined to one another, wherein the tray and cover each comprise a susceptor film joined to paperboard, the susceptor film comprising a polymer film and a layer of microwave energy interactive material having a thickness of fro
1. A microwave heating apparatus, comprising: a tray and a cover hingedly joined to one another, wherein the tray and cover each comprise a susceptor film joined to paperboard, the susceptor film comprising a polymer film and a layer of microwave energy interactive material having a thickness of from about 60 to about 100 angstroms so that the layer of microwave energy interactive material is operative for absorbing microwave energy and generating heat, wherein the polymer film at least partially defines an interior surface of the tray and cover, so that the microwave energy interactive material is for being closely proximate to a food item within the apparatus,wherein the tray and cover each include a plurality of protrusions on an interior side of the tray and cover, anda plurality of indentations on an exterior side of the tray and cover, wherein the indentations on the exterior side of the tray and cover define the respective protrusions on the interior side of the tray and cover, andwherein for each protrusion of at least some protrusions of the plurality of protrusions: the indentation that defines the protrusion also defines a cavitythe protrusion comprises a base end, an end opposite the base end, and a lateral surface extending completely around the cavity, the lateral surface extending from the base end of the protrusion to the opposite end of the protrusion,a portion of the susceptor film extends substantially continuously both around the protrusion and from the base end of the protrusion to the opposite end of the protrusion, comprising the lateral surface as a whole being substantially continuously covered by the portion of the susceptor film, so that the portion of the susceptor film extends substantially continuously around the cavity, andthe portion of the susceptor film comprises both a portion of the polymer film anda portion of the layer of microwave energy interactive material having a thickness of from about 60 to about 100 angstroms. 2. The apparatus of claim 1, wherein the protrusions are substantially frusto-conical or substantially frusto-pyramidal in shape, and the portions of the susceptor film are substantially frusto-conical or substantially frusto-pyramidal in shape. 3. The apparatus of claim 1, wherein the microwave energy interactive material comprises at least one of aluminum and indium tin oxide. 4. The apparatus of claim 1, formed by a method comprising subjecting the susceptor film joined to paperboard to a thermal, mechanical, or thermomechemical pressing technique. 5. The apparatus of claim 1, in combination with the food item, wherein the food item is initially in an uncooked state. 6. A method of using the combination of claim 5, comprising exposing the uncooked food item within the apparatus to microwave energy, so that the microwave energy interactive material generates heat to cook the uncooked food item. 7. A microwave heating apparatus, comprising: a tray and a cover connected to one another, the cover being operative for pivoting relative to the tray between an open position and a closed position, the closed position defining an interior space for receiving a food item, wherein the tray and cover each comprise a susceptor film joined to paperboard, the susceptor film comprising a polymer film and a layer of aluminum operative for absorbing microwave energy and generating heat, wherein the polymer film faces the interior space when the cover is in the closed position, so that the layer of aluminum is closely proximate to the interior space for heating the food item,wherein the tray and cover each include a plurality of protrusions on an interior side of the tray and cover, wherein the plurality of protrusions extend towards the interior space when the cover is in the closed position, anda plurality of indentations on an exterior side of the tray and cover, wherein the indentations on the exterior side of the tray and cover define the respective protrusions on the interior side of the tray and cover, andwherein for each protrusion of at least some protrusions of the plurality of protrusions: the indentation that defines the protrusion also defines a cavitythe protrusion comprises a base end, an end opposite the base end, and a lateral surface extending completely around the cavity, the lateral surface extending from the base end of the protrusion to the opposite end of the protrusion,a portion of the susceptor film extends substantially continuously both around the protrusion and from the base end of the protrusion to the opposite end of the protrusion, comprising the lateral surface as a whole being substantially continuously covered by the portion of the susceptor film, so that the portion of the susceptor film extends substantially continuously around the cavity, andthe portion of the susceptor film comprises both a portion of the polymer film anda portion of the layer of microwave energy interactive material. 8. The apparatus of claim 7, wherein the protrusions are substantially frusto-conical or substantially frusto-pyramidal in shape, and the portions of the susceptor film are substantially frusto-conical or substantially frusto-pyramidal in shape. 9. The apparatus of claim 7, wherein the layer of aluminum has a thickness of from about 60 to about 100 angstroms. 10. The apparatus of claim 7, formed by a method comprising subjecting the susceptor film joined to paperboard to a thermal, mechanical, or thermomechemical pressing process. 11. The apparatus of claim 7, in combination with the food item, wherein the food item initially has an at least partially liquid consistency. 12. A method of using the combination of claim 11, comprising exposing the food item within the apparatus to microwave energy, so that the microwave energy interactive material generates heat that cooks the food item, wherein the cooked food item has an at least partially solid consistency. 13. A microwave heating apparatus, comprising: a tray and a cover connected to one another, the tray and cover each comprising a susceptor film joined to paperboard, wherein the susceptor film comprises a layer of microwave energy interactive material operative for absorbing microwave energy and generating heat,wherein an interior side of the tray includes a plurality of protrusions that extend towards the interior space when the cover is in the closed position,an exterior side of the tray includes a plurality of indentations aligned with the protrusions on the interior side of the tray,an interior side of the cover includes a plurality of indentations that extend away from the interior space when the cover is in the closed position, andan exterior side of the cover includes a plurality of protrusions aligned with the indentations on the interior side of the cover,wherein the protrusions of the tray and the indentations of the cover are in register with one another when the cover is in the closed position, andwherein for each protrusion of at least some protrusions of the plurality of protrusions: the indentation that defines the protrusion also defines a cavitythe protrusion comprises a base end, an end opposite the base end, and a lateral surface extending completely around the cavity, the lateral surface extending from the base end of the protrusion to the opposite end of the protrusion,a portion of the susceptor film extends substantially continuously both around the protrusion and from the base end of the protrusion to the opposite end of the protrusion, comprising the lateral surface as a whole being substantially continuously covered by the portion of the susceptor film, so that the portion of the susceptor film extends substantially continuously around the cavity, andthe portion of the susceptor film comprises both a portion of the polymer film anda portion of the layer of microwave energy interactive material. 14. The apparatus of claim 13, wherein the layer of microwave energy interactive material has a thickness of from about 60 to about 100 angstroms. 15. The apparatus of claim 13, wherein the protrusions on the interior side of the tray and the protrusions on the exterior side of the cover are substantially frusto-conical or substantially frusto-pyramidal in shape, and the portions of the susceptor film are substantially frusto-conical or substantially frusto-pyramidal in shape. 16. The apparatus of claim 13, wherein the microwave energy interactive material comprises at least one of aluminum and indium tin oxide. 17. The apparatus of claim 13, formed by a method comprising subjecting the susceptor film joined to paperboard to a thermal, mechanical, or thermomechemical pressing technique. 18. The apparatus of claim 13, in combination with a food item, wherein the food item is initially in an uncooked condition. 19. A method of using the combination of claim 18, comprising exposing the uncooked food item within the apparatus to microwave energy, so that the microwave energy interactive material generates heat to cook the uncooked food item. 20. A microwave heating apparatus, comprising: a first component and a second component joined to one another, the second component being operative for moving relative to the first component between an open position and a closed position, the closed position defining an interior space for receiving a food item, wherein the first component and second component each comprise a susceptor film joined to paperboard, the susceptor film comprising a layer of microwave energy interactive material deposited on a polymer film, wherein the layer of microwave energy interactive material is operative for absorbing microwave energy and converting microwave energy into heat, and wherein the polymer film faces the interior space when the second component is in the closed position, so that the microwave energy interactive material is closely proximate to the interior space for heating the food item,wherein the first component includes a plurality of projections that extend towards the interior space when the second component is in the closed position,the second component includes a plurality of indentations that extend away from the interior space when the second component is in the closed position, andthe projections of the first component and the indentations of the second component are aligned with one another when the second component is in the closed position, andwherein for each projection of at least some projections of the plurality of projections: the indentation that defines the projection also defines a cavitythe projection comprises a base end, an end opposite the base end, and a lateral surface extending completely around the cavity, the lateral surface extending from the base end of the projection to the opposite end of the projection,a portion of the susceptor film extends substantially continuously both around the projection and from the base end of the projection to the opposite end of the projection, comprising the lateral surface as a whole being substantially continuously covered by the portion of the susceptor film, so that the portion of the susceptor film extends substantially continuously around the cavity, andthe portion of the susceptor film comprises both a portion of the polymer film anda portion of the layer of microwave energy interactive material. 21. The apparatus of claim 20, wherein the projections of the first component and the indentations of the second component are substantially frusto-conical or substantially frusto-pyramidal in shape, and the portions of the susceptor film are substantially frusto-conical or substantially frusto-pyramidal in shape. 22. The apparatus of claim 20, wherein an exterior side of the first component includes a plurality of indentations that define the projections on the interior side of the first component, andan exterior side of the second component includes a plurality of projections defined by the indentations on the interior side of the second component. 23. The apparatus of claim 20, wherein the microwave energy interactive material comprises at least one of aluminum and indium tin oxide. 24. The apparatus of claim 20, wherein the layer of microwave energy interactive material has a thickness of from about 60 to about 100 angstroms. 25. The apparatus of claim 20, formed by a method comprising subjecting the susceptor film joined to paperboard to a thermal, mechanical, or thermomechemical pressing technique. 26. The apparatus of claim 20, in combination with the food item, wherein the food item initially has an at least partially liquid consistency. 27. A method of using the combination of claim 26, comprising exposing the food item within the apparatus to microwave energy, so that the microwave energy interactive material generates heat that cooks the food item, wherein the cooked food item has an at least partially solid consistency. 28. A microwave heating apparatus, comprising: a single piece of a laminate pressed to define a tray and a cover foldably joined to one another along a line of disruption in the laminate so that the cover can be moved between an open position and a closed position, wherein the laminate comprises a susceptor film joined to paperboard, wherein the susceptor film comprises a layer of microwave energy interactive material supported on a polymer film, the microwave energy interactive material being operative for heating in response to microwave energy,wherein the tray includes a base including a plurality of upwardly extending protrusions, anda plurality of walls extending upwardly from a peripheral margin of the base, wherein the base and walls define an interior space for receiving a food item, andthe cover includes a substantially planar portion, anda plurality of protrusions that extend from the substantially planar portion, the protrusions each being circumscribed by and contiguous with the substantially planar portion of the cover, wherein the protrusions of the cover extend into the interior space when the cover is in the closed position,wherein the substantially planar portion of the cover extends to a peripheral edge of the cover, so that the substantially planar portion of the cover is for being in a facing, contacting relationship with an uppermost portion of the walls of the tray when the cover is in the closed position, and the indentation that defines the protrusion also defines a cavitythe protrusion comprises a base end, an end opposite the base end, and a lateral surface extending completely around the cavity, the lateral surface extending from the base end of the protrusion to the opposite end of the protrusion,a portion of the susceptor film extends substantially continuously both around the protrusion and from the base end of the protrusion to the opposite end of the protrusion, comprising the lateral surface as a whole being substantially continuously covered by the portion of the susceptor film, so that the portion of the susceptor film extends substantially continuously around the cavity, andthe portion of the susceptor film comprises both a portion of the polymer film anda portion of the layer of microwave energy interactive material. 29. The apparatus of claim 28, wherein: the protrusions are substantially frusto-conical or substantially frusto-pyramidal in shape;the portions of the susceptor film are substantially frusto-conical or substantially frusto-pyramidal in shape; andthe layer of microwave energy interactive material has a thickness of from about 60 to about 100 angstroms. 30. The apparatus of claim 1, wherein for each protrusion of at least some protrusions of the plurality of protrusions: the cavity is concave,the protrusion is a dome having a surface, andthe lateral surface is the surface of the dome. 31. The apparatus of claim 7, wherein for each protrusion of at least some protrusions of the plurality of protrusions: the cavity is concave,the protrusion is a dome having a surface, andthe lateral surface is the surface of the dome. 32. The apparatus of claim 13, wherein for each protrusion of at least some protrusions of the plurality of protrusions: the cavity is concave,the protrusion is a dome having a surface, andthe lateral surface is the surface of the dome. 33. The apparatus of claim 20, wherein for each projection of at least some projections of the plurality of projections: the cavity is concave,the projection is a dome having a surface, andthe lateral surface is the surface of the dome. 34. The apparatus of claim 28, wherein for each protrusion of at least some protrusions of the plurality of protrusions: the cavity is concave,the protrusion is a dome having a surface, andthe lateral surface is the surface of the dome.
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