Double-center wall microwave food package

• US 5,270,066 A
• Filed: 08/11/1989
• Issued: 12/14/1993
• Est. Priority Date: 08/11/1989
• Status: Expired due to Term

• Current Assignee: Graphic Packaging International Incorporated
• Original Assignee: James River Corporation of Virginia (KOCH Industries Incorporated)
• Inventors: Pawlowski, Thomas D.
• Primary Examiner(s): Weinstein, Steven
• Assistant Examiner(s): Weier, Anthony
• Application Number:
  US07/392,576
• Time in Patent Office: 1,586 Days
• Field of Search: 426/107, 426/113, 426/234, 426/243, 219/10.55 E, 229/120.04, 229/114
• US Class Current: 426/107
• CPC Class Codes: B65D 2581/3494 Microwave susceptor B65D2581/3487 takes precedence
• CPC Class Codes: B65D 5/48016 formed by folding extensions hinged to the upper or lower edges of a tubular body B65D5/48008 takes precedence
• CPC Class Codes: B65D 81/3453 Rigid containers, e.g. trays, bottles, boxes, cups

Abstract

A package for use in storing, vending and microwave cooking of food products. The package includes a double center wall which divides an interior food cavity into two food compartments. The center wall and the remaining interior surfaces of the container are coated with a microwave interactive layer thereby exposing an increased surface area of the food articles to the microwave interactive layers. Improved surface cooking, such as surface browning and crisping are achieved, as well as increased convenience in packaging and cooking.

Claims

1. A package for use in heating a plurality of food items by microwave energy comprising:

carton means for forming an interior food item receiving cavity;

partition means for separating said food cavity into at least two food compartments shaped to accommodate the respective food items, said partition means including at least a first side; and

microwave interactive means for converting microwave energy into heat, said microwave interactive means including a microwave interactive material located on and coextensive with at least a substantial portion of said first side of said partition means to heat the surface of at least one of said food items;

wherein said carton includes a cover comprising at least one cover panel for opening and closing said compartments, said partition means comprising at least one partition wall connected to said at least one cover panel and being movable therewith out of and into said food cavity as at least one of said compartments is opened and closed, respectively.

2. The package of claim 1, wherein said partition means includes a pair of partition walls, each wall having a side facing inwardly toward a respective one of said two food compartments said first side comprising one of said inwardly facing sides;

said microwave interactive means including a microwave interactive material located on each of said inwardly facing sides.

3. The package of claim 2, wherein each of said partition walls has a second side, the respective second sides facing toward each other in closely spaced relation.

4. The package of claim 1, wherein said partition means is hingedly connected to said cover.

5. The package of claim 4, wherein said cover includes a pair of cover panels, each cover panel covering one of said compartments, and said partition means includes a pair of partition walls with each partition wall hingedly connected to a respective one of said cover panels, each of said partition walls having a side facing inwardly toward the compartment covered by the respective hingedly connected cover panel;

said microwave interactive means including a microwave interactive material located on each of said inwardly facing sides.

6. The package of claim 5, wherein said carton means includes four peripheral walls and a bottom wall, wherein two of said four peripheral walls are hingedly connected to said cover panels.

7. The package of claim 6, wherein said four peripheral walls are connected to the bottom wall at four respective fold lines.

8. The package of claim 1, wherein each of said food compartments include interior surfaces, said interior surfaces including surfaces of bottom, top and side walls, and said partition means wherein a microwave interactive material is located on the interior surfaces of at least one of said compartments.

9. The package of claim 8, wherein the interior surfaces of both of said compartments include a microwave interactive material.

10. The package of claim 1, wherein said carton includes a pair of end walls having an opening, said partition means including tab means for positioning of said partition means, said package having an erect, closed configuration in which said tab means pass into and engage with said openings.

11. The package of claim 10, wherein said partition means includes a pair of partition walls, each wall having two tabs forming said tab means, one tab of each partition wall passing into the opening of one of said pair of end walls, the other tab of each partition wall passing into the opening of the other of said pair of end walls when the package is in the erect, closed configuration.

12. The package of claim 10, wherein each of said partition walls includes two sides, one side of each partition wall facing toward a respective side of the other partition wall, the other side of each partition wall having a microwave interactive material thereon.

13. The package of claim 1, further including a food product located within each of said food compartments.

14. The package of claim 13, wherein each of said two food compartments includes interior surfaces;

and a microwave interactive material is located on at least a portion of the interior surfaces of each compartment.

15. The package of claim 14, wherein the food product is hush puppies.

16. The package of claim 14, wherein said food product comprises a row of food articles in each compartment.

17. The package of claim 14, wherein said food product is a potato wedge, with one wedge in each of said compartments.

18. The package of claim 14, wherein said food product is apple fritters.

19. The package of claim 1, wherein said carton means includes peripheral walls, at least one of which is inclined.

20. The package of claim 1, wherein said carton means includes four inclined peripheral walls.

37. The package of claim 1, wherein said partition means forms a substantially planar partition having said microwave interactive material located on said first side thereby providing a substantially planar microwave interactive surface means for providing heat to one of said at least two food compartments.

38. The microwave package of claim 1, wherein said partition means includes first and second sides each facing inwardly toward a respective one of said at least two food compartments, wherein said first and second sides are substantially planar;

and wherein a microwave interactive material is located on each of said first and second sides thereby providing substantially planar microwave interactive surface means for providing heat to each of the respective food compartments.

21. A package for use in heating a plurality of food items by microwave energy comprising:

carton means for forming an interior food item receiving cavity, said carton means including a bottom and a cover;

said cover including a pair of cover panels which are individually movable for opening and closing said carton means, and associated depending panels which, when the cover panels are in a closed position extend from each of said cover panels toward said bottom, said depending panels being arranged to move out of the interior food cavity as a respective cover panel is moved to an open position and to divide said interior food cavity into two food compartments shaped to accommodate the respective food items when a respective cover panel is moved to a closed position;

said depending panels each having a first side;

said first sides facing toward each other when the cover panels are in a closed position, each of said panels further including a second side;

microwave interactive means located on each of said second sides for heating the surface of at least one of said food items and

at least one said food item being located within each of said two food compartments.

22. The package of claim 21, wherein said depending panels each include a lower edge in engagement with said bottom.

23. The package of claim 21, wherein said bottom has a surface area which is smaller than a sum of cover panel surface areas.

24. The package of claim 21, wherein said carton means includes side walls;

said side walls each including an interior surface;

said cover panels each including an interior surface;

said bottom including an interior surface; and

a microwave interactive material associated with each of the interior surfaces of said side walls, said cover panels and said bottom.

25. The package of claim 24, further including means for liquid removal on the interior surface of said bottom.

26. The package of claim 25, wherein said means for liquid removal includes a plurality of slots cut through the microwave interactive material of said bottom.

27. The package of claim 24, further including at least one hush puppy within each of said food compartments.

28. The package of claim 24, further including a row of hush puppies in each food compartment.

29. The package of claim 24, further including at least one apple fritter in each food compartment.

30. The package of claim 24, further including at least one potato wedge within each food compartment.

31. The package of claim 21, wherein said depending panels are located in a central portion of said food cavity.

39. The package of claim 21, wherein said carton means includes a pair of end walls, at least one of said depending panels including positioning means for engaging said end walls to position the at least one depending panel.

40. The package of claim 39, wherein each of said depending panels includes positioning means, said positioning means including a pair of tabs located on each of said depending panels which protrude into at least one opening located on each of said end walls.

32. A blank for a microwave package for use in heating a plurality of food items comprising:

a central panel adapted to form a package bottom wall;

four side panels connected to said central panel for forming a package peripheral wall surrounding the central panel;

a first pair of panels each connected to a separate one of said four panels for forming a package top wall which is movable to open and close a food capacity defined by said central panel wall and peripheral wall;

a second pair of panels each connected to a separate one of said first pair of panels for forming a package partition subdividing the food cavity into at least two food compartments shaped to accommodate the respective food items

one of said second pair of panels having a microwave interactive material thereon, such that said second pair of panels forms a partition when said package is erect and said food cavity is closed by the package top wall, said second pair of panels being arranged to move to an open position, and said one of said second pair of panels providing a microwave interactive material exposed to the interior of one of the at least two food compartments to heat the surface of at least one of said food items.

33. The blank of claim 32, wherein each of said four panels is trapezoidal.

34. The blank of claim 32, further including one or more glue flaps connected to at least two of said four panels.

35. The blank of claim 32, further including a plurality of scores in said central panel.

36. The blank of claim 32, wherein each of said second pair of panels includes microwave interactive means located thereon for providing heat to two compartments of a microwave package.