EP0365247A2 - Récipient et son papier et méthode pour le chauffage par micro-ondes - Google Patents

Récipient et son papier et méthode pour le chauffage par micro-ondes Download PDF

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Publication number
EP0365247A2
EP0365247A2 EP89310573A EP89310573A EP0365247A2 EP 0365247 A2 EP0365247 A2 EP 0365247A2 EP 89310573 A EP89310573 A EP 89310573A EP 89310573 A EP89310573 A EP 89310573A EP 0365247 A2 EP0365247 A2 EP 0365247A2
Authority
EP
European Patent Office
Prior art keywords
container
layer
food
thin layer
dimension
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.)
Withdrawn
Application number
EP89310573A
Other languages
German (de)
English (en)
Other versions
EP0365247A3 (fr
Inventor
Donald Gregory Beckett
Larry Lai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beckett Industries Inc
Original Assignee
Beckett Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB888824238A external-priority patent/GB8824238D0/en
Priority claimed from GB888827712A external-priority patent/GB8827712D0/en
Priority claimed from GB888827760A external-priority patent/GB8827760D0/en
Application filed by Beckett Industries Inc filed Critical Beckett Industries Inc
Publication of EP0365247A2 publication Critical patent/EP0365247A2/fr
Publication of EP0365247A3 publication Critical patent/EP0365247A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B65D81/3461—Flexible containers, e.g. bags, pouches, envelopes
    • 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
    • B65D2581/3401—Cooking or heating method specially adapted to the contents of the package
    • B65D2581/3402—Cooking or heating method specially adapted to the contents of the package characterised by the type of product to be heated or cooked
    • B65D2581/3412—Cooking fried food
    • 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
    • B65D2581/3439—Means for affecting the heating or cooking properties
    • B65D2581/3452—Packages having a plurality of microwave reactive layers, i.e. multiple or overlapping microwave reactive layers
    • 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
    • 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
    • B65D2581/3477—Iron or compounds thereof
    • B65D2581/3478—Stainless steel
    • 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
    • B65D2581/3483—Carbon, carbon black, or graphite
    • 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

  • the present invention is concerned with a sleeve or bag for microwave heating of food products for consumption.
  • a novel container structure to permit food products to be heated by microwave energy while thermal energy also is applied to the exterior surface.
  • the food products which can be packaged in the novel container structure are elongate food products, such as fish sticks, french fries, burritos, egg rolls and spring rolls, as well as other shaped products, such as puff pastries and apple turnovers.
  • a novel container structure comprises a flexible sleeve or bag for housing a foodstuff for heating therein by the application of microwave energy.
  • the flexible sleeve is formed of overlying and coincident layers of a flexible structure comprising a discontinuous thin layer of electroconductive material supported on a paper substrate material and having a thickness such as to permit a portion of microwave energy incident thereon to be converted to thermal energy.
  • the thin layer is provided on the substrate only in those regions of the interior of the sleeve intended to contact the foodstuff in the bag.
  • the requirement that the thin layer of electroconductive material be present only in the regions of the interior of the sleeve intended to contact the foodstuff arises from the fact that, upon exposure to microwave energy, the thin layer heats up to a high temperature which, but for the heat sink of the foodstuff, may cause scorching or even burning of the paper substrate.
  • the thin layer of electroconductive material supported on the substrate usually is provided with an overlying layer, so that the thin layer does not directly contact the foodstuff.
  • Such overlying layer may comprise a heat-resistant release layer, such as a silicone, or a polymeric film layer.
  • the thin electroconductive material layer is provided supported on the substrate by directly applying the thin layer to the paper layer by any convenient procedure, such as by sputtering or electron beam coating of stainless steel.
  • the thin material layer may be provided in the desired pattern on the substrate or may be applied over the whole surface of the substrate and then inactivated in the region where thermal energy is not desired to be produced.
  • the thin layer of electroconductive material often conveniently first is provided on the polymeric film layer, such as by vapor deposition of aluminum.
  • Selective demetallization of the aluminum may be employed to provide the non-heating regions, such as by employing aqueous alkaline etchant, as described, for example, in U.S. Patents nos. 4,398,994, 4,552,614 and 4,610,755, the disclosures of which are incorporated herein by reference.
  • the combination of the thin metal film on polymeric film layer then is laminated to the paper layer, and thereby the thin metal layer becomes supported on the paper substrate.
  • This problem may be overcome by placing a corrugated cardboard or the like insulator between the lower surface of the sleeve and the microwave oven wall.
  • a corrugated cardboard or the like insulator between the lower surface of the sleeve and the microwave oven wall.
  • the problem is overcome by providing an additional layer of electroconductive material having heat susceptor thickness at the side intended to be the lower surface, so that the heat otherwise lost is compensated for by the heat generated by the additional layer of electroconductive or semi-conductive material.
  • the sleeve of the invention may be used to package the foodstuff and may be sealed at the manufacturing location of the foodstuff.
  • the sleeve of the invention may be provided in the form of an open-­ended bag, which then may be employed in the domestic environment for heating the foodstuff inserted into the sleeve by the consumer.
  • the open end is pre-folded over to assist the sleeve to stay closed after the consumer has placed the foodstuff in the sleeve.
  • FIG. 1 there is shown therein a blank 10 from which a heat susceptor sleeve or bag may be formed by folding the blank in two so as the layers overly and are coincident with one another to enclose a desired foodstuff, and then sealing the edges.
  • the blank 10 comprises a paper substrate layer 12, an upper polymeric film layer 14 and a discontinuous thin layer 16 of electroconductive material located between the paper layer 12 and the polymeric film layer 14.
  • the discontinuous thin layer 16 is provided on the substrate layer 12 only in those regions which are intended to engage the outer surface of the foodstuff, so as to avoid scorching and perhaps burning in the regions that are not contacted by the foodstuff.
  • the polymeric film layer 14 may be replaced by a layer of heat-resistant release material, which may be provided only in the locations of the discontinuous layer 16, if desired.
  • An additional paper layer may be provided overlying the polymeric film layer or other layer 14.
  • an additional thin layer of electroconductive material may be provided on the polymeric film layer to be coincident with all or a portion only of one or more of the discontinuous layers of electroconductive or semi-conductive material to obtain thereby a multiple heating effect from the overlying layers of electroconductive material.
  • an additional thin layer of electroconductive material may be adhered to the outer wall of the structure to effect such augmentation of heating, for example, in the form of a patch comprising the thin layer laminated between a polymeric film layer and a paper layer.
  • the layer 16 and any additional layer of such material most conveniently may be provided by an electroconductive metal or alloy thereof, preferably aluminum or stainless steel, although other electroconductive materials, such as carbon black and certain metal oxides, may be employed. In the following further discussion of the invention, the layer 16 will be described as being of metal.
  • the discontinuous layer 16 may be of any desired thickness capable of converting a portion of microwave energy incident thereon into thermal energy.
  • the thickness of the electromagnetic material is such as to cause that material to become semi-conductive.
  • aluminum which is the metal commonly employed when a polymeric film layer 14 is employed
  • the thickness generally is one corresponding to an optical density of about 0.08 to about 3.0, preferably about 0.1 to about 0.8 and most preferably about 0.2 to about 0.5.
  • stainless steel which is the metal commonly employed when a release coating is provided on the metal layer 16 the thickness generally is one corresponding to a resistance of about 50 to about 5000 ohms, preferably about 100 to about 2000 ohms.
  • This principle can be employed in the present invention to slow the rate of heating of the filling of a foodstuff while the exterior is heated by the thermal energy generated from the thin metal layer to provide a crisp exterior to the foodstuff.
  • a fully-­cooked but not overcooked foodstuff may be provided having a crisp exterior.
  • the thickness may correspond to an optical density of greater than about 0.8 to obtain the microwave shielding effect.
  • the blank 22 has a substantially similar structure to blank 10, having a paper substrate layer 24, a polymeric film layer 26 and a discontinuous thin metal layer 28.
  • the discontinuous metal layer 28 comprises three segments or domains rather than the two segments or domains illustrated in the Figure 1 embodiment.
  • Two of the adjacent segments 28 are of the same dimensions, corresponding to the outer surface of the foodstuff intended to be contacted by the two segments 28 while the third segment may be of the same dimension as the other two, or of a lesser dimension as illustrated.
  • the blank 22 is folded about a foodstuff 30, in three panels 32, 34 and 36, so that panel 36, containing the third segment of the discontinuous metal layer 28 is coincident with and overlies panel 32, and is end sealed to complete the enclosure.
  • panel 36 containing the third segment of the discontinuous metal layer 28 is coincident with and overlies panel 32, and is end sealed to complete the enclosure.
  • the outer metal layer may be of a lesser dimension than the inner metal layer, so that the augmented heating is obtained only in a portion of the overlapping panels, for example, with a puff pastry or an apple turnover, where additional heating is required to the filling only, to provide the final cooked product.
  • the foodstuff 30 When the foodstuff 30 is exposed to microwave radiation, a portion of that radiation is converted to thermal energy by the thin metal layers, as described above, while the microwave energy passing through the sleeve 20 heats the filling of the foodstuff 30.
  • the thermal energy produced by the thin metal layers results in crispening of the outer crust of the product and assists in cooking the foodstuffs 30 to the required temperature for consumption.
  • the extent of overlapping of the panels 32 and 36 is such as to provide approximately one-third overlap, which provides an overlapping region of approximately the same dimension as the non-overlapping region.
  • the ratio of overlapping region to non-overlapping region may be varied, generally from about 25:75 to about 75:25.
  • an additional metal layer may be provided by a separate element, such as a panel comprising the metal layer supported on paper or polymeric film or laminated between layers of polymeric film paper, adhered to the outer surface of one side of a bag structure, such as illustrated in Figure 1.
  • FIG. 5 there is illustrated therein an embodiment of the invention of a preformed sleeve for domestic use.
  • the present invention may be employed not only to provide pre-packaged foodstuffs from a manufacturer, as described above with respect to Figures 1 to 4, but may also provide a sleeve 40 for domestic use, whereby the consumer positions the desired foodstuff in the sleeve or bag.
  • the sleeve 40 is of construction similar to the embodiment of Figures 2 to 4, except that it is provided in the form of a sleeve which is sealed at three edges 42, 44, 46 but which is open at one end edge 48, to facilitate insertion of the foodstuff into the sleeve 40.
  • the open edge 48 is prefolded over at 50.
  • the pre­folding over of the open edge 48 enables the sleeve 40 to be readily opened to receive a foodstuff 52, such as an eggroll, for cooking and then to be easily and properly folded again to provide closure of the sleeve 40 at that end.
  • This arrangement ensures that there is uniform contact between the interior of the bag in the region of the discontinuous metal layers and the outer surface of the foodstuff, to provide even browning and crisping of the foodstuff.
  • the sleeve 40 is formed from a single sheet with overlapping panels, as seen in the sectional view of Figure 7, in analogous manner to the structure illustrated in Figures 2 to 4.
  • an outer paper substrate 54 has three segments or domains 56 of thin metal coinciding in shape and location to the foodstuff 52, and an overlying polymeric film layer 58.
  • Figures 8 to 10 show the application of the principles of the invention to a french fry bag, with an alternative manner of sealing of the bag.
  • Figure 10 shows the bag 60 with an open end in the folded-over configuration shown in Figure 5, to permit the same to be used domestically.
  • the structure equally may be sealed enclosing the french fries at the factory level. French fries are commonly available in a cooked frozen form.
  • the french fry bag of the invention enables microwave reconstitution of such frozen french fries to be effected.
  • the blank 62 for the french fry bag comprises a paper substrate 64, a polymeric material film layer 66 coextensive with the paper layer 64 and a discontinuous metal layer 68, comprising three panels 70, 72 and 74.
  • the metal panels are provided only in locations which contact french fries packaged in the french fry bag, as seen in the close-up of Figure 9.
  • the polymeric film layer 66 may be replaced by a layer of release material over the thin metal panels.
  • the metal layer 68 is provided in a thickness which permits the conversion of a portion of microwave energy incident thereon to be converted to thermal energy, so as to crispen the outer surface of the french fries as they are heated by the microwave energy.
  • the portions of the blank containing metal panels 70 and 74 are folded over and are sealed together to form a longitudinal seal 76 extending for the length of the bag 60 approximately centrally-located in one face, while the ends also are sealed, or one end is left open, depending on the use.
  • the provision of the longitudinal seal 76 is an alternative arrangement to the edge sealing illustrated with respect to the embodiments of Figure 1.
  • the upper metal panels 70, 74 tend to heat up more than the lower metal panel 72 when microwave energy is applied during reconstitution of the frozen french fries.
  • an additional outer metal layer may be provided, as discussed above, or the upper metallic panels 70, 74 may be provided with a lower density of metal than the lower metal panel 72, so that less heat is generated from the microwave energy in the upper panels. This alternative also may be employed in the embodiment of Figure 1.
  • This effect may be achieved by using a screening demetallization in the regions of the sheet which are to provide the metal panels 70, 74, as described in copending United States patent application Serial No. 353,206 filed April 12, 1989, owned by the applicant herein and the disclosure of which is incorporated herein by reference.
  • the present invention provides a novel heat susceptor structure in the form of a bag uniquely capable of being employed in the microwave heating of food products. Modifications are possible within the scope of this invention.
  • a method of heating food comprising the steps of placing food in a container formed by a flexible structure comprising a discontinuous thin layer of electrically conductive material supported on a substrate, applying microwave energy to the food in the container to heat the food, and causing a portion of the microwave energy incident upon the container to be converted to thermal energy by the discontinuous thin layer of electroconductive material substantially only in regions where the food is located in the container.
  • a flexible container for microwave heating of food in the container being formed by a flexible structure comprising a discontinuous thin layer of electrically conductive material which is supported on a substrate material and which has a thickness such as to permit a portion of microwave energy incident thereon to be converted to thermal energy, the discontinuous thin layer being positioned on the substrate material only in selected regions which are such as to be likely to be in close proximity in operation with food placed in the container.
  • the container has upper and lower major faces joined at side edges of the major faces, each said selected region extending over a substantial area of one of the major surfaces, but leaving at least some side edges free of the layer of electroconductive material.
  • a blank for forming a flexible container for microwave heating of food in the container the blank being formed by a flexible structure comprising a discontinuous thin layer of electrically conductive material which is supported on a substrate material and which has a thickness such as to permit a portion of microwave energy incident thereon to be converted to thermal energy, the discontinuous thin layer being positioned on the substrate material only in selected regions which are such as to be likely to be in close proximity in operation with food placed in a container formed from the blank.
EP19890310573 1988-10-17 1989-10-16 Récipient et son papier et méthode pour le chauffage par micro-ondes Withdrawn EP0365247A3 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB888824238A GB8824238D0 (en) 1988-10-17 1988-10-17 Container for microwave heating of french fries & similar food products
GB8824238 1988-10-17
GB888827712A GB8827712D0 (en) 1988-11-28 1988-11-28 Heat susceptor sleeves
GB8827712 1988-11-28
GB8827760 1988-11-28
GB888827760A GB8827760D0 (en) 1988-11-28 1988-11-28 Container for microwave heating of french fries & similar food products-ii

Publications (2)

Publication Number Publication Date
EP0365247A2 true EP0365247A2 (fr) 1990-04-25
EP0365247A3 EP0365247A3 (fr) 1991-05-22

Family

ID=27264126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890310573 Withdrawn EP0365247A3 (fr) 1988-10-17 1989-10-16 Récipient et son papier et méthode pour le chauffage par micro-ondes

Country Status (5)

Country Link
EP (1) EP0365247A3 (fr)
JP (1) JPH03176386A (fr)
KR (1) KR900006201A (fr)
AU (1) AU4299389A (fr)
CA (1) CA2000676A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117078A (en) * 1990-02-02 1992-05-26 Beckett Industries Inc. Controlled heating of foodstuffs by microwave energy
GB2280342A (en) * 1990-12-01 1995-01-25 Waddingtons Cartons Ltd Improvements relating to microwaveable packaging for foodstuff
WO2008005784A1 (fr) * 2006-07-05 2008-01-10 Graphic Packaging International, Inc. Emballage à compartiments multiples pour chauffage par micro-ondes

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4595402B2 (ja) * 2004-02-12 2010-12-08 凸版印刷株式会社 袋状容器
JP5892717B2 (ja) * 2009-06-04 2016-03-23 小林製薬株式会社 加熱補助部材
JP6045512B2 (ja) * 2009-06-04 2016-12-14 小林製薬株式会社 加熱補助部材
JP5659755B2 (ja) * 2010-04-15 2015-01-28 凸版印刷株式会社 電子レンジ加熱器具
JP5609389B2 (ja) * 2010-07-30 2014-10-22 凸版印刷株式会社 電子レンジ加熱調理用具
JP5881297B2 (ja) * 2011-01-19 2016-03-09 小林製薬株式会社 加熱補助部材
JP5881295B2 (ja) * 2011-01-19 2016-03-09 小林製薬株式会社 加熱補助部材
JP5881296B2 (ja) * 2011-01-19 2016-03-09 小林製薬株式会社 加熱補助部材

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196331A (en) * 1978-07-17 1980-04-01 The Procter & Gamble Company Microwave energy cooking bag
WO1987002334A1 (fr) * 1985-10-17 1987-04-23 Beatrice/Hunt-Wesson, Inc. Emballage interactif a micro-ondes contenant une couche d'acier inoxydable et son procede de fabrication
US4713510A (en) * 1986-06-25 1987-12-15 International Paper Co. Package for microwave cooking with controlled thermal effects
US4735513A (en) * 1985-06-03 1988-04-05 Golden Valley Microwave Foods Inc. Flexible packaging sheets
GB2202118A (en) * 1987-03-06 1988-09-14 Drg Uk Ltd Packaging materials for use in microwave ovens
EP0350660A2 (fr) * 1988-07-13 1990-01-17 Societe Des Produits Nestle S.A. Provision de feuilles composites pour le chauffage à micro-ondes et récipient

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230924A (en) * 1978-10-12 1980-10-28 General Mills, Inc. Method and material for prepackaging food to achieve microwave browning
JPS5910210A (ja) * 1983-06-15 1984-01-19 Taamo:Kk 係合具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196331A (en) * 1978-07-17 1980-04-01 The Procter & Gamble Company Microwave energy cooking bag
US4735513A (en) * 1985-06-03 1988-04-05 Golden Valley Microwave Foods Inc. Flexible packaging sheets
WO1987002334A1 (fr) * 1985-10-17 1987-04-23 Beatrice/Hunt-Wesson, Inc. Emballage interactif a micro-ondes contenant une couche d'acier inoxydable et son procede de fabrication
US4713510A (en) * 1986-06-25 1987-12-15 International Paper Co. Package for microwave cooking with controlled thermal effects
GB2202118A (en) * 1987-03-06 1988-09-14 Drg Uk Ltd Packaging materials for use in microwave ovens
EP0350660A2 (fr) * 1988-07-13 1990-01-17 Societe Des Produits Nestle S.A. Provision de feuilles composites pour le chauffage à micro-ondes et récipient

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117078A (en) * 1990-02-02 1992-05-26 Beckett Industries Inc. Controlled heating of foodstuffs by microwave energy
GB2280342A (en) * 1990-12-01 1995-01-25 Waddingtons Cartons Ltd Improvements relating to microwaveable packaging for foodstuff
GB2250408B (en) * 1990-12-01 1995-08-02 Waddingtons Cartons Ltd Improvements relating to the microwave heating of foodstuff
WO2008005784A1 (fr) * 2006-07-05 2008-01-10 Graphic Packaging International, Inc. Emballage à compartiments multiples pour chauffage par micro-ondes
US8198571B2 (en) 2006-07-05 2012-06-12 Graphic Packaging International, Inc. Multi-compartment microwave heating package
US9114913B2 (en) 2006-07-05 2015-08-25 Graphic Packaging International, Inc. Multi-compartment microwave heating package

Also Published As

Publication number Publication date
JPH03176386A (ja) 1991-07-31
AU4299389A (en) 1990-04-26
KR900006201A (ko) 1990-05-07
CA2000676A1 (fr) 1990-04-17
EP0365247A3 (fr) 1991-05-22

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