USRE34829E - Food package for use in a microwave oven - Google Patents
Food package for use in a microwave oven Download PDFInfo
- Publication number
- USRE34829E USRE34829E US07/944,475 US94447592A USRE34829E US RE34829 E USRE34829 E US RE34829E US 94447592 A US94447592 A US 94447592A US RE34829 E USRE34829 E US RE34829E
- Authority
- US
- United States
- Prior art keywords
- food product
- container
- microwaves
- metallized ink
- food
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
- B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
- B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
- B65D2581/3437—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within specially adapted to be heated by microwaves
- B65D2581/3463—Means for applying microwave reactive material to the package
- B65D2581/3464—Microwave reactive material applied by ink printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
- B65D2581/3437—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within specially adapted to be heated by microwaves
- B65D2581/3471—Microwave reactive substances present in the packaging material
- B65D2581/3472—Aluminium or compounds thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
- B65D2581/3437—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within specially adapted to be heated by microwaves
- B65D2581/3486—Dielectric characteristics of microwave reactive packaging
- B65D2581/3489—Microwave reflector, i.e. microwave shield
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within
- B65D2581/3437—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within specially adapted to be heated by microwaves
- B65D2581/3486—Dielectric characteristics of microwave reactive packaging
- B65D2581/3494—Microwave susceptor
Definitions
- microwave energy in both domestic and commercial establishments has become increasingly popular in the preparation of various food products.
- the food product is initially in a frozen state, thawing heating and/or cooking thereof can be readily expedited and at a low cost by utilizing such energy and at the same time enhancing the taste and nutritional value of the product.
- the time required to properly prepare the food product by utilizing microwave energy will depend upon a variety of factors, such as the product size and configuration; its density and consistency, and dielectric properties.
- the receptacle or package in which the product is disposed during the cooking or heating cycle may have certain areas thereof provided with means for reflecting the microwaves and thus shielding the adjacent portion of the food product therefrom and reducing the external and internal heat thereof.
- means can be provided at certain locations and areas of the receptacle or package wherein the microwaves are absorbed to a greater extend thereby generating surface areas of enhanced heat.
- Such variable heat requirements are particularly important where the receptacle or package segregates the various food products into contiguous compartments, such as occurs in various frozen TV dinners presently available on the market.
- the enhancer or receptor metallized material often times increases the heat surface temperature of the substrate material, e.g., paperboard, on which it is deposited to a point where the substrate material becomes discolored or charred lessening its esthetics.
- the metallized material may bow, curl or melt, when subjected to the generated microwave, causing contamination of the accommodated food product or leakage of the food product from the container onto the floor of the microwave oven creating a clean-up problem for the user.
- prior disposable microwave oven food product packages and receptacles embodying enhancer features required a combination of diverse materials and non-conventional methods of combining such materials to form a usable and practical structure.
- numerous prior containers of this general type such as disclosed in U.S. Pat. No. 4,641,005, utilize a film of polyethylene terephthalate (PET) commonly in a thickness of 0.48 gauge which is then vacuum metallized with aluminum. This material must be tightly controlled as to the amount of metallization applied (often measured and referred to as optical density, light transmission or OHMS per square inch).
- PET polyethylene terephthalate
- This metallized film must then be laminated to a more durable substrate, such as paper or paperboard, to prevent said film from biaxially shrinking during cooking which will cause the prior controlled amount of aluminum particles deposited on the film to gather more closely together thereby increasing the materials's actual and prior controlled optical density to a non-controlled state thereby creating possible malfunctions of the receptive material itself and the quality of the cooked food in direct contact therewith.
- a more durable substrate such as paper or paperboard
- this form of microwave oven receptive packaging remains costly not only due to the amount of materials which must be combined in order to achieve the desired end result, but also due to the fact that diverse component suppliers and processors are often times involved such as a film supplier, a metallizer, a laminator, a paperstock supplier, and paperboard converter.
- a food package for use in a microwave oven to cook, heat and/or thaw, the food product while accommodated within the package.
- the package includes a container in which is disposed the food product.
- Predetermined portions of the accommodated food product may require either enhanced heat; shielding against microwaves, or in certain instances may require enhanced heat while other portions simultaneously require shielding against the microwaves generated within the oven.
- Predetermined surface areas of the container adjacent designated portions of the accommodated product have deposited thereon various amounts of metallized ink.
- the metallized ink consists of a prescribed amount of metal particles suspended in an ink-like substance whereby, when the deposited metallized ink is exposed to the generated microwaves, either the desired enhanced heat or shielding is produced.
- FIG. 1 is a perspective view of one embodiment of the improved food package in its initial unopened mode.
- FIG. 2 is a similar to FIG. 1 but with a cover section thereof in an open mode thereby providing access to the accommodated food product, shown in phantom lines.
- FIG. 3 is a top plan view of a blank of paperboard or similar material from which the container of the package shown in FIG. 1 is formed; the metallized ink being shown deposited on predetermined surface portions of the blank.
- FIG. 3a is an enlarged fragmentary sectional view taken along line 3a--3a of FIG. 3.
- FIG. 4 is a perspective view of a second embodiment of the improved food package in an unopened mode.
- FIG. 5 is a bottom view of the package of FIG. 4 and showing the metallized ink deposited on a predetermined portion of the bottom exterior surface of the package.
- FIG. 6 is an enlarged sectional view taken along line 6--6 of FIG. 4.
- FIG. 7 is an enlarged fragmentary portion of the package of FIG. 6 shown included within the dotted circle indicated thereon.
- FIG. 8 is similar to FIG. 7 but showing the metallized ink deposited on the bottom interior surface of the container.
- FIG. 9 is a fragmentary enlarged vertical sectional view of a third embodiment of the improved food package wherein the latter includes an inner container in which the food product is accommodated and an outer container in which the inner container is disposed.
- FIG. 10 is a perspective top view of the inner container of FIG. 9 without a cover therefor.
- FIG. 11 is a top plan view of a blank from which at least a part of the outer container of FIG. 9 is formed and showing predetermined surface portions of the blank with metallized ink deposited thereon.
- the package 20 includes a container 21 in the form of a folding carton.
- the container 21, as seen in FIG. 3, is formed from a blank B of heat resistant material pervious to microwaves (e.g. paperboard Q) and includes a bottom panel 22 which subtends and supportingly engages the underside of a food product P, accommodated within the container.
- a rear panel 24 Disposed to the left side of the bottom panel, as seen in FIG. 3, and connected thereto by foldline 23 is a rear panel 24 which is adapted to extend substantially vertically upwardly from the bottom panel 22 when the blank is set up to form container 21.
- end flaps 32 and 33 Foldably connected to the opposite narrow ends of rear panel 24 and inner front panel 31 are end flaps 32 and 33, respectively, which are adapted to be secured to the outer surface of the inner side panels 27 and 28 whereby the inner front panel 31, the inner side panels 27 and 28, and the rear panel 24 are retained in vertical upright positions and coact to form a wall which delimits bottom panel 22 when the blank is set up to form the container 21.
- top panel 35 Connected by foldline 34 to the peripheral portion of the rear panel 24 opposite foldline 23 is a top panel 35 which is adapted to assume a spaced, superposed relation with the bottom panel 22, when the container is in a closed mode, as seen in FIG. 1.
- Outer side panels 36 and 37 are foldably connected to opposed peripheral portions of the top panel 35 and are adapted to overlie the outer surfaces of the corresponding inner side panels 27, 28 and the end flaps 32, 33 secured thereto.
- An outer front panel 38 is foldably connected to the peripheral portion of the top panel 35 opposite foldline 34. End flaps 40, 41 are foldably connected to outer side panels 36, 37 and secured to the interior of outer front panel 38 so as to retain the outer side panels 36, 37 and outer front panel 38 in depending relation with respect to the top panel 35.
- the outer front panel 38 may be provided with a conventional tear strip 42 which extends lengthwise across the panel 38.
- the food product P accommodated in container 21 may require enhanced heat for certain portions thereof when the product is being heated or cooked by the microwaves generated within the microwave oven, not shown, surface portions I, II, III and IV of blank B have deposited thereon metallized ink K, see FIG. 3a.
- the surface portions I-IV will be disposed in close proximity or engage corresponding surface portions of the product requiring the desired enhanced heat.
- the metallized ink embodies a controlled amount of metal particulates or particles (e.g. aluminum) which are suspended in an ink-type carrying substance.
- the actual amount of metal particles may vary according to the enhanced heat required and the intensity of the microwave energy generated within the oven and can be carefully controlled through standard formula measurements (i.e. parts per hundred on a volumetric basis).
- the metallized ink is to be printed on a paperboard substrate Q, the latter may, for example, be run through a standard offset printing press.
- the amount of metallized ink deposited on the paperboard will depend in part at least upon factors such as ink viscosity, speed of the press and the amount of ink lay down.
- Measuring the amount of deposition may be done through the use of a conventional densitometer and/or interchemical thickness gauge, the latter being of a type disclosed in U.S. Pat. No. 2,507,592. It has been found that there is a direct correlation between parts per hundred of metallization and densitometer reading thereby allowing accurate in-line printing controls. Where an interchemical thickness gauge is utilized it will accurately measure the metallized ink film thickness on the form roller, which through the printing process will directly transfer onto the printing plate, then onto the offset blanket and finally onto the intended paperboard surface Q.
- substrates besides paperboard may be utilized provided they are pervious to microwaves; can be folded molded, or shaped to the desired configuration; are heat resistant; can withstand temperatures generated during microwave cooking cycle; and will not deleteriously affect the accommodated food product or the microwave oven in which the package is placed.
- deposition of the metallized ink may be accomplished by means other than printing (e.g. spraying, brushing, dipping, etc.).
- metallized ink In addition to metallized ink, other more conventional inks may also be applied to the substrate for informational indicia, graphics or the like.
- the surface portions I-IV of the blank B may have deposited thereon metallized ink of the same or different thicknesses and densities of suspended metal particulates or particles.
- portion I may have a density of twenty two (22) parts per hundred; and the portions II-IV may have a density of eighteen (18) parts per hundred.
- a protective coating C may be applied to the exposed surface of the metallized ink K, see FIG. 3a using conventional printing techniques.
- the coating C when subjected to microwaves, prevents any transfer of the metallized ink to the product or oven surface, which might otherwise cause sticking of the container thereto.
- the configuration and size of the container 21 and the number, location, size and shape of the surface areas on which the metallized ink is deposited may also vary over a wide range and will depend upon the type, size and shape of food product to be accommodated therein and the power output of the microwave oven in which the container is to be placed.
- FIGS. 4-8 illustrate a second version of the improved food package 120 which includes a container 121 having a bowl 122 in which the food product P is disposed, and a lid 123 which is fit over the top of the bowl.
- the bowl may be formed of a molded pulp or suitable plastic material which is heat resistant, pervious to microwaves, will not deleteriously affect the accommodated food product and will retain its shape when subjected to a wide range of temperatures. Where the bowl is of molded pulp material, the surface thereof exposed to the food product may be provided with a suitable liner or coating which prevents direct contact of the food product with the pulp fibers.
- the lid 123 may be formed of a variety of materials and in some instances might be a film or membrane having the periphery thereof sealed to the rim 122a of the bowl defining the top thereof. Normally a portion of the lid film is peeled back from the rim, or completely removed from the bowl, before the container is subjected to the microwaves.
- the exterior of the bottom 122b of the container has deposited thereon a metallized ink K which will cause enhanced heat to occur in the vicinity of the container bottom.
- a metallized ink K which will cause enhanced heat to occur in the vicinity of the container bottom.
- Such enhanced heat might be desirable where the lower portion of the accommodated food product includes a sauce or cooking oil.
- the metallized ink deposited on the exterior bottom surface of the container may be deposited on the interior bottom surface, see FIG. 8. In some instances, it might be desirable to deposit the metallized ink on the side wall 122c of the container.
- FIGS. 9-11 illustrate a third version of the improved food package 220 and the various components thereof.
- Package 220 is particularly suitable for the simultaneous packaging of a variety of food items comprising, for example, a meat, poultry or fish entree; potato, rice or noodles; and a vegetable.
- Such food packaging is popularly known as a frozen TV dinner.
- Package 220 includes a thin-walled compartmented tray-like container 221 formed of a molded pulp or plastic material having characteristics like those previously described.
- the container is provided with three compartments, X Y and Z, each intended to accommodate a different food product of the type previously noted. Initially, the top of the container may be covered by a suitable plastic film or membrane which may be perforated, partially peeled back or entirely removed before the heating or cooking operation commences.
- the tray-like container 221 is disposed within an outer container 222 which may include a bottom section 223 and a telescoping top section 224. Both the top and bottom sections may be formed from blanks of paperboard or similar material.
- the bottom section 223, as illustrated, is formed from a blank BB, see FIG. 11, the latter having a bottom panel 223a which supportingly engages and subtends container 221.
- Foldably connected to opposing peripheral portions of the bottom panel are end panels 223b, and side panels 223c, respectively.
- End flaps 223d may be foldably connected to opposite ends of either the side panels, as shown, or the end panels.
- a metallized ink of the type previously described is a metallized ink of the type previously described.
- the locations of areas I'-III' correspond substantially to the locations of the bottom surfaces of the compartments X, Y and Z, respectively, of the tray-like container 221, when the latter is disposed within the outer container 222, as shown in FIG. 9.
- the densities of the metallized ink deposited on each of the surface areas I'-III' may vary and will depend upon the type of food product accommodated in each compartment.
- metallized ink is shown deposited on the bottom panel 223a of the bottom section 223 it is not intended to be limited thereto, but may be deposited on the end and side panels 223b, and 223c, as well, and on the interior surface of the top panel 224a of the top section 224.
- the shape, size and number of metallized ink deposits on the bottom panel 223a of the bottom section will depend on the number, shape and location of the compartments formed in the tray-like container.
- the metallized ink may be deposited directly onto either the exterior or interior surface of a predetermined number of the compartments. Furthermore, in certain instances it may be desirable that either the entire interior or exterior surface of the container have deposited thereon the metallized ink.
- portions of the accommodated food product be shielded from microwaves while other portions of the food product be exposed to the microwaves for normal heating or enhanced heating. Shielding of predetermined portions of the accommodated food product may be accomplished by applying to areas of the container proximate the predetermined portions of the food product, a metallized ink having a high level or concentration of metal particulates which will cause the microwaves to be reflected rather than absorbed thereby enabling the predetermined portions to remain relatively cool instead of heating up when the microwaves are being generated within the oven.
- the amount of shielding desired may be achieved by varying the parts per hundred of particulates--e.g., 60 parts/hundred may determined a shielding factor of 40% whereas 85 parts/hundred may determine a shielding factor of 100%.
- an improved food package for use in a microwave oven which utilizes a pattern of metallized ink deposited on predetermined surfaces of certain of the package components in order to obtain areas of enhanced heat or shielding when the package is subjected to microwaves.
- the deposition of the metallized ink can be carefully controlled and high speed conventional equipment can be utilized in applying the ink to various components of the package.
- Metallized ink having different densities may be deposited on certain packages so that different enhanced heat temperatures or variations in shielding capabilities can be simultaneously attained when the package is subjected to the microwaves generated in the oven.
- the metallized ink may be applied by printing spraying, brushing or dipping onto components which vary in size and shape over a wide range without adversely affecting the volumetric capacity or structural integrity of the component.
- the improved food package facilitates microwave heating and cooking of the accommodated food product and the components thereof are inexpensive and may be readily discarded when the heating and/or cooking has been completed.
Abstract
Description
Claims (2)
- product..]. .Iadd.12. A food package for heating or cooking a food product accommodated therein in a microwave oven, the accommodated food product having at least a first predetermined portion thereof requiring enhanced heat during the heating or cooking of the product, and at least a second predetermined portion thereof requiring shielding from microwaves during the heating or cooking of the product, said package comprising a container for the food product formed of a heat resistant material which is capable of retaining its shape when subjected to heating or cooking temperatures and is pervious to the microwaves generated within the oven, said container having first and second surface areas of the material in proximity to the said first and second predetermined portions of the accommodated food product, respectively, said first area having printed directly on the material surface a metallized ink, the latter having a predetermined amount of metal particles suspended in an ink-like substance, whereby when said metallized ink is exposed to generated microwaves, the printed surface area retains its shape and produces the required enhanced heat for the said first predetermined portion of the accommodated food product, said second predetermined area having a metallized ink having a large amount or concentration of metal particles which will cause the microwaves to be reflected enabling the second predetermined portion to remain relatively cool instead of heating up when the microwaves are being generated within the oven. .Iaddend. .Iadd.13. The food package of claim 12 wherein the accommodated food product has a third predetermined portion requiring normal microwave heating during the heating or cooking of the product, said container having a third surface area in proximity to said third predetermined portion of the accommodated food product, said third area devoid of metallized ink. .Iaddend. .Iadd.14. The food package of claim 12 wherein the accommodated food product has a plurality of separate first predetermined portions requiring enhanced heat during heating or cooking of the food product in the microwave oven, said container having a corresponding number of first surface areas on which is directly printed the metallized ink for effecting the required enhanced heat. .Iaddend. .Iadd.15. The food package of claim 14 wherein the metallized ink printed on a certain first surface area of the container has an amount of suspended metal particles which is different from the amount of suspended metal particles in the metallized ink printed on another first surface area thereby effecting enhanced heat of different temperatures when the food product is subjected to the microwaves generated within the oven. .Iaddend. .Iadd.16. The food package of claim 14 wherein the accommodated food product has a plurality of second predetermined portions requiring shielding from microwaves during the heating or cooking of the product, said container having a corresponding number of second surface areas having a metallized ink with a large amount or concentration of metal particles for causing the
- microwaves to be reflected. .Iaddend. .Iadd.17. The food package of claim 16 wherein the metallized ink of a certain second surface area of the container has an amount or concentration of metal particles which is different from the amount or concentration of metal particles of another second surface area thereby effecting shielding to different degrees when the food product is subjected to the microwaves generated within the oven. .Iaddend. .Iadd.18. The food package of claim 12 wherein the accommodated food product has a plurality of second predetermined portions requiring shielding from microwaves during the heating or cooking of the product, said container having a corresponding number of second surface areas having a metallized ink with a large amount or concentration of metal particles for causing the microwaves to be reflected. .Iaddend. .Iadd.19. The food package of claim 18 wherein the metallized ink of a certain second surface area of the container has an amount or concentration of metal particles which is different from the amount or concentration of metal particles of another second surface area thereby effecting shielding to different degrees when the food product is subjected to the microwaves generated within the oven. .Iaddend. .Iadd.20. A disposable container for accommodating a food product having at least a first predetermined portion requiring enhanced heat and at least a second predetermined portion requiring shielding from microwaves when the food product is heated or cooked within a microwave oven, said container being formed of a heat resistant material which is capable of retaining its shape when subjected to heating or cooking temperatures and is pervious to microwaves, said material having a first surface area on which is directly printed a metallized ink, the latter having a predetermined amount of metal particles suspended in an ink-like substance, said first surface area adapted to be in proximity to said first predetermined portion of the food product and provide the required enhanced heat therefor while retaining its shape when the food product is subjected to the microwaves generated within the oven, and said material having a second surface area on which is directly printed a metallized ink having a large amount or concentration of metal particles which will cause the microwaves to be reflected, said second surface area adapted to be in proximity to said second predetermined portion of the food product and provide the required shielding therefor when the food product is subjected to the microwaves generated within the oven. .Iaddend. .Iadd.21. The disposable container of claim 20 further having a third surface area adapted to be in proximity to a third predetermined portion of the food product requiring normal microwave heating during the heating or cooking of the product, said third area devoid of metallized ink. .Iaddend. .Iadd.22. The disposable container of claim 20 further having one or more other surface areas adapted to be in proximity to a corresponding one or more other predetermined portions of the food product requiring respectively one or more degrees of enhanced heat or shielding, said one or more other areas having metallized ink in such amounts or concentrations for effecting the required enhanced heat or shielding. .Iaddend.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US07/944,475 USRE34829E (en) | 1988-04-06 | 1992-09-14 | Food package for use in a microwave oven |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US07/178,243 US4866232A (en) | 1988-04-06 | 1988-04-06 | Food package for use in a microwave oven |
US93470192A | 1992-08-24 | 1992-08-24 | |
US07/944,475 USRE34829E (en) | 1988-04-06 | 1992-09-14 | Food package for use in a microwave oven |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US07/178,243 Reissue US4866232A (en) | 1988-04-06 | 1988-04-06 | Food package for use in a microwave oven |
US93470192A Division | 1988-04-06 | 1992-08-24 |
Publications (1)
Publication Number | Publication Date |
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USRE34829E true USRE34829E (en) | 1995-01-17 |
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ID=26874130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US07/944,475 Expired - Lifetime USRE34829E (en) | 1988-04-06 | 1992-09-14 | Food package for use in a microwave oven |
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US (1) | USRE34829E (en) |
Cited By (13)
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WO1998008750A1 (en) * | 1996-08-26 | 1998-03-05 | Fort James Corporation | Microwavable container |
US5770840A (en) * | 1995-12-12 | 1998-06-23 | Conagra Frozen Foods | Microwave cooking container for food items |
WO2000009319A1 (en) * | 1998-08-12 | 2000-02-24 | Impact Creative Technologies, Inc. | A method for producing volume-defining items employing lenticularlens technology |
US6342693B1 (en) | 1999-08-13 | 2002-01-29 | Rose Mary Smith | Resizable microwave oven liner apparatus and method |
US6677563B2 (en) | 2001-12-14 | 2004-01-13 | Graphic Packaging Corporation | Abuse-tolerant metallic pattern arrays for microwave packaging materials |
US20040144777A1 (en) * | 2002-11-11 | 2004-07-29 | Ajinomoto Co. Inc | Container commonly usable for electromagnetic cooking heaters and microwave ovens |
US20040157011A1 (en) * | 2000-02-15 | 2004-08-12 | Travel Tags, Inc. | Method of bonding a lenticular lens sheet to plastic objects and objects made from same |
US6960748B2 (en) | 2003-10-09 | 2005-11-01 | Smurfit-Stone Container Enterprises, Inc. | Collapsible microwave popcorn box |
US20070132122A1 (en) * | 2003-01-22 | 2007-06-14 | Travel Tags, Inc. | Methods of manufacturing plastic objects having bonded lenticular lens-sheets |
US20080230176A1 (en) * | 2004-01-19 | 2008-09-25 | Van De Weijer Franciscus Johan | Method for Producing Container Parts, Container Parts, Method for Producing a Multilayer Foil, Multilayer Foil |
US20150007954A1 (en) * | 2013-07-05 | 2015-01-08 | Yu-Chun Huang | Method for making a shoebox |
US20170121095A1 (en) * | 2005-10-20 | 2017-05-04 | Conagra Foods Rdm, Inc. | Cooking method and apparatus |
US11643559B2 (en) | 2017-07-25 | 2023-05-09 | Magnomer, Inc. | Methods and compositions for magnetizable plastics |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3302632A (en) * | 1963-12-06 | 1967-02-07 | Wells Mfg Company | Microwave cooking utensil |
US3353968A (en) * | 1963-02-01 | 1967-11-21 | Litton Prec Products Inc | Food package for use in microwave heating apparatus |
US3865301A (en) * | 1973-11-15 | 1975-02-11 | Trans World Services | Partially shielded food package for dielectric heating |
US4230924A (en) * | 1978-10-12 | 1980-10-28 | General Mills, Inc. | Method and material for prepackaging food to achieve microwave browning |
US4267420A (en) * | 1978-05-30 | 1981-05-12 | General Mills, Inc. | Packaged food item and method for achieving microwave browning thereof |
US4518651A (en) * | 1983-02-16 | 1985-05-21 | E. I. Du Pont De Nemours And Company | Microwave absorber |
US4641005A (en) * | 1979-03-16 | 1987-02-03 | James River Corporation | Food receptacle for microwave cooking |
US4656325A (en) * | 1984-02-15 | 1987-04-07 | Keefer Richard M | Microwave heating package and method |
US4662969A (en) * | 1985-01-14 | 1987-05-05 | General Motors Corporation | Microwave method of perforating a polymer film |
US4676857A (en) * | 1986-01-17 | 1987-06-30 | Scharr Industries Inc. | Method of making microwave heating material |
US4763790A (en) * | 1986-08-30 | 1988-08-16 | Waddingtons Cartons Limited | Heat treatable containers |
US5308945A (en) * | 1986-03-17 | 1994-05-03 | James River Corporation | Microwave interactive printable coatings |
-
1992
- 1992-09-14 US US07/944,475 patent/USRE34829E/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3353968A (en) * | 1963-02-01 | 1967-11-21 | Litton Prec Products Inc | Food package for use in microwave heating apparatus |
US3302632A (en) * | 1963-12-06 | 1967-02-07 | Wells Mfg Company | Microwave cooking utensil |
US3865301A (en) * | 1973-11-15 | 1975-02-11 | Trans World Services | Partially shielded food package for dielectric heating |
US4267420A (en) * | 1978-05-30 | 1981-05-12 | General Mills, Inc. | Packaged food item and method for achieving microwave browning thereof |
US4230924A (en) * | 1978-10-12 | 1980-10-28 | General Mills, Inc. | Method and material for prepackaging food to achieve microwave browning |
US4641005A (en) * | 1979-03-16 | 1987-02-03 | James River Corporation | Food receptacle for microwave cooking |
US4518651A (en) * | 1983-02-16 | 1985-05-21 | E. I. Du Pont De Nemours And Company | Microwave absorber |
US4656325A (en) * | 1984-02-15 | 1987-04-07 | Keefer Richard M | Microwave heating package and method |
US4662969A (en) * | 1985-01-14 | 1987-05-05 | General Motors Corporation | Microwave method of perforating a polymer film |
US4676857A (en) * | 1986-01-17 | 1987-06-30 | Scharr Industries Inc. | Method of making microwave heating material |
US5308945A (en) * | 1986-03-17 | 1994-05-03 | James River Corporation | Microwave interactive printable coatings |
US4763790A (en) * | 1986-08-30 | 1988-08-16 | Waddingtons Cartons Limited | Heat treatable containers |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5770840A (en) * | 1995-12-12 | 1998-06-23 | Conagra Frozen Foods | Microwave cooking container for food items |
WO1998008750A1 (en) * | 1996-08-26 | 1998-03-05 | Fort James Corporation | Microwavable container |
WO2000009319A1 (en) * | 1998-08-12 | 2000-02-24 | Impact Creative Technologies, Inc. | A method for producing volume-defining items employing lenticularlens technology |
US6342693B1 (en) | 1999-08-13 | 2002-01-29 | Rose Mary Smith | Resizable microwave oven liner apparatus and method |
US20080118674A1 (en) * | 2000-02-15 | 2008-05-22 | Travel Tags, Inc. | Plastic objects including lenticular lens sheets |
US20040157011A1 (en) * | 2000-02-15 | 2004-08-12 | Travel Tags, Inc. | Method of bonding a lenticular lens sheet to plastic objects and objects made from same |
US20050053737A1 (en) * | 2000-02-15 | 2005-03-10 | Travel Tags, Inc. | Method of bonding a lenticular lens sheet to plastic objects and objects made from same |
US20080118673A1 (en) * | 2000-02-15 | 2008-05-22 | Travel Tags, Inc. | Plastic objects including lenticular lens sheets |
US6677563B2 (en) | 2001-12-14 | 2004-01-13 | Graphic Packaging Corporation | Abuse-tolerant metallic pattern arrays for microwave packaging materials |
US20040144777A1 (en) * | 2002-11-11 | 2004-07-29 | Ajinomoto Co. Inc | Container commonly usable for electromagnetic cooking heaters and microwave ovens |
US7064307B2 (en) * | 2002-11-11 | 2006-06-20 | Ajinomoto Co., Inc. | Container commonly usable for electromagnetic cooking heaters and microwave ovens |
US20070132122A1 (en) * | 2003-01-22 | 2007-06-14 | Travel Tags, Inc. | Methods of manufacturing plastic objects having bonded lenticular lens-sheets |
US6960748B2 (en) | 2003-10-09 | 2005-11-01 | Smurfit-Stone Container Enterprises, Inc. | Collapsible microwave popcorn box |
US20080230176A1 (en) * | 2004-01-19 | 2008-09-25 | Van De Weijer Franciscus Johan | Method for Producing Container Parts, Container Parts, Method for Producing a Multilayer Foil, Multilayer Foil |
US8696854B2 (en) | 2004-01-19 | 2014-04-15 | Winstore Europe B.V. | Method for producing container parts, container parts, method for producing a multilayer foil, multilayer foil |
US20170121095A1 (en) * | 2005-10-20 | 2017-05-04 | Conagra Foods Rdm, Inc. | Cooking method and apparatus |
US10829292B2 (en) * | 2005-10-20 | 2020-11-10 | Conagra Foods Rdm, Inc. | Cooking method and apparatus |
US20150007954A1 (en) * | 2013-07-05 | 2015-01-08 | Yu-Chun Huang | Method for making a shoebox |
US9243369B2 (en) * | 2013-07-05 | 2016-01-26 | Yu-Chun Huang | Method for making a shoebox |
US11643559B2 (en) | 2017-07-25 | 2023-05-09 | Magnomer, Inc. | Methods and compositions for magnetizable plastics |
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