EP0382399A2 - Procédés et dispositifs utilisés pour le chauffage par micro-ondes d'aliments et autres matériaux - Google Patents

Procédés et dispositifs utilisés pour le chauffage par micro-ondes d'aliments et autres matériaux Download PDF

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Publication number
EP0382399A2
EP0382399A2 EP90300997A EP90300997A EP0382399A2 EP 0382399 A2 EP0382399 A2 EP 0382399A2 EP 90300997 A EP90300997 A EP 90300997A EP 90300997 A EP90300997 A EP 90300997A EP 0382399 A2 EP0382399 A2 EP 0382399A2
Authority
EP
European Patent Office
Prior art keywords
apertures
microwave
article
aperture
surface layer
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.)
Granted
Application number
EP90300997A
Other languages
German (de)
English (en)
Other versions
EP0382399A3 (fr
EP0382399B1 (fr
Inventor
Richard M. Keefer
Cindy Marie Lacroix
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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
Application filed by Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Publication of EP0382399A2 publication Critical patent/EP0382399A2/fr
Publication of EP0382399A3 publication Critical patent/EP0382399A3/fr
Application granted granted Critical
Publication of EP0382399B1 publication Critical patent/EP0382399B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
    • 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
    • B65D2581/344—Geometry or shape factors influencing the microwave heating properties
    • B65D2581/3441—3-D geometry or shape factors, e.g. depth-wise
    • 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
    • B65D2581/3487—Reflection, Absorption and Transmission [RAT] properties of the microwave reactive package
    • 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

Definitions

  • the wrapping described in this prior patent simultaneously acts as a microwave-transparent covering for part of the energy, and as a susceptor, i.e. a structure that absorbs microwave energy and hence becomes heated, for the remainder of the applied energy.
  • the top 20a of a plastic lid 16a may be molded with a multiplicity of hollow vertical protrusions 43 (one for each island 40) to increase the vertical spacing between the islands 40 and the apertures 36 of the plates 34.
  • Each protrusion 43 projects upwardly from the upper horizontal surface of the lid top 20a, and itself has a generally rectangu­lar, horizontal flat top surface, on which is mounted one of the islands 40.
  • the aper­ture-defining plate 34 is mounted on the lower (down­wardly facing) horizontal surface of the lid top, and the apertures 36 are disposed in register with the protrusions 43, being thus also in register with the islands 40.
  • Wide gaps or annuli As with their narrow counter­parts, wide gaps or annuli will support resonances over their lengths. However, they will also allow two-dimen­sional resonances, generally characterized by larger cut-off dimensions. Thus, in decreasing critical dimen­sions, cut-off will first occur for two-dimensional resonances, and be followed by cut-off in resonances determined by gap or annular lengths. By selecting dimensions which support resonances determined by gap or annular lengths, while providing cut-off of two-dimen­sional resonances, heating of the bulk of the absorber may be balanced against heating of its surfaces.
  • the mode filters described above are a subset of a much broader set, which is conceptually linked also to the conductive indented structures of the last-mentioned European application.
  • This much broader set may be characterized in the following features:
  • the shape of the aperture defined by the annulus need not necessarily conform to the outer shape of the annulus
  • a circular aperture in a square annulus can be used. Mixtures of these different shapes in a given array are possible, as well as modifications in the arrangement of the array and variations in the sizes of the different shapes in a given array.
  • alternate rows of the square annuli 420 in Fig. 38 can be staggered, to cause the microwave-transparent material between the annuli to trace out tortuous paths and avoiding long straight paths.
  • a container of frozen, battered and crumb-­coated fish was heated first using the hexagonal annuli and then using the square annuli. It was found that, when using the square annuli, it was sometimes best to use a different aperture dimension on the top surface from that used on the bottom.
  • the array used (Fig. 45), which is basically similar in structure to Fig. 1, was separated into two parts, namely an array of islands 428 (Fig. 46) and an array of apertures 429 (Fig. 47). Three samples were tested under identical conditions, one with the island array (Fig. 46) alone, a second with the aperture array (Fig. 47) alone, and a third with these two arrays combined to provide the composite array of Fig. 45. It was found that neither of the single arrays when used individually was effective. However the combination produced a mode-filtering array that provided uniformity of heating across the surface of the pastry and an intensification of heat at the surface, i.e. a non-uniformity of heating in the vertical direction, sufficient to achieve satisfactory browning across the entire surface.
  • FIG. 48 A further run was conducted using a pastry load of 10 mm depth and a mode-filtering array as shown in Fig. 48 having metal "annuli" 431 of such a shape as to define cruciform apertures 432, these annuli being arrayed on a sheet 433 of microwave-transparent material.
  • the differ­ence between the surface and bulk temperatures was already approximately 35°C after 20 seconds heating at full power and remained at about this value as heating progressed.
  • the array of Fig. 48 was tested in order to demonstrate that the interior shape of the annulus, i.e. the aperture, in this case cruciform, need not necessarily conform to the outer shape of the annulus, in this case square.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Electric Ovens (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Cookers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Disintegrating Or Milling (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP90300997A 1989-02-09 1990-01-31 Procédés et dispositifs utilisés pour le chauffage par micro-ondes d'aliments et autres matériaux Expired - Lifetime EP0382399B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000590564A CA1339540C (fr) 1989-02-09 1989-02-09 Methodes de cuisson au four a micro-ondes de produits alimentaires et autres, et dispositifs connexes
CA590564 1989-02-09

Publications (3)

Publication Number Publication Date
EP0382399A2 true EP0382399A2 (fr) 1990-08-16
EP0382399A3 EP0382399A3 (fr) 1992-02-12
EP0382399B1 EP0382399B1 (fr) 1994-11-30

Family

ID=4139596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90300997A Expired - Lifetime EP0382399B1 (fr) 1989-02-09 1990-01-31 Procédés et dispositifs utilisés pour le chauffage par micro-ondes d'aliments et autres matériaux

Country Status (10)

Country Link
EP (1) EP0382399B1 (fr)
JP (1) JP3049071B2 (fr)
AT (1) ATE114598T1 (fr)
AU (1) AU628918B2 (fr)
BR (1) BR9000574A (fr)
CA (1) CA1339540C (fr)
DE (1) DE69014331T2 (fr)
FI (1) FI900648A0 (fr)
NO (1) NO900546L (fr)
ZA (1) ZA90446B (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016084A1 (fr) * 1991-03-11 1992-09-17 Alcan International Limited Four tunnel a microondes
WO1992019515A1 (fr) * 1991-05-06 1992-11-12 Beckett Industries Inc. Boite a pizza pouvant etre rechauffee dans un four a micro-ondes
WO1992019511A1 (fr) * 1991-04-24 1992-11-12 Beckett Industries Inc. Bac de cuisson pour four a micro-ondes
EP0650905A2 (fr) * 1993-10-27 1995-05-03 James River Paper Company, Inc. Emballage pour four à micro-ondes avec fonction pour régler l'adaptation de l'impédance
EP0661005A1 (fr) * 1993-09-24 1995-07-05 Unilever Plc Produit alimentaire composite à cuire au micro-onde
WO1996038352A1 (fr) * 1995-06-02 1996-12-05 Beckett Technologies Corp. Structure d'emballage 'intelligente' pour le chauffage par micro-ondes
EP0650670B1 (fr) * 1993-11-01 1998-08-12 Unilever Plc Procédé de fixation thermique d'une pâte enrobant un produit alimentaire au moyen d'un chauffage diélectrique
WO1998035887A1 (fr) * 1997-02-12 1998-08-20 Fort James Corporation Capteur d'energie a motifs pour four micro-ondes
WO2004020310A1 (fr) * 2002-08-27 2004-03-11 Christopher Paul Wedlock Dispositif de dispersion de micro-ondes
EP2106517A1 (fr) * 2007-01-22 2009-10-07 Graphic Packaging International, Inc. Contenant allant au micro-onde et chauffant de manière égale
US8395101B2 (en) 2009-05-01 2013-03-12 Graphic Packaging International, Inc. Construct with locating feature
US8680448B2 (en) 2006-05-15 2014-03-25 Graphic Packaging International, Inc. Microwavable construct with contoured heating surface
US8803050B2 (en) 2006-05-15 2014-08-12 Graphic Packaging International, Inc. Microwavable construct with contoured heating surface
US8872079B2 (en) 2008-02-18 2014-10-28 Graphic Packaging International, Inc. Apparatus for preparing a food item in a microwave oven
US8901469B2 (en) 2008-02-18 2014-12-02 Graphic Packaging International, Inc. Method and apparatus for cooking raw food items in a microwave oven
US9493287B2 (en) 2008-07-11 2016-11-15 Graphic Packaging International, Inc. Microwave heating container
US9656776B2 (en) 2013-12-16 2017-05-23 Graphic Packaging International, Inc. Construct with stiffening features

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2639171B1 (fr) * 2006-05-15 2023-10-18 Graphic Packaging International, LLC Plateau de chauffage par micro-ondes
US9254061B2 (en) 2006-06-14 2016-02-09 The Glad Products Company Microwavable bag or sheet material
US8461499B2 (en) 2006-06-14 2013-06-11 The Glad Products Company Microwavable bag or sheet material
BR112015020335A2 (pt) 2013-03-15 2017-07-18 Graphic Packaging Int Inc recipiente para conter um produto alimentício, molde para formar um recipiente para conter um produto alimentício, e método para formar um recipiente para conter um produto alimentício
JP7505588B2 (ja) 2020-12-14 2024-06-25 株式会社村田製作所 加熱用電磁波制御体及び加熱用電磁波制御体付き物品

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246041A2 (fr) * 1986-05-09 1987-11-19 Alcan International Limited Récipient à micro-ondes
EP0271981A2 (fr) * 1986-05-09 1988-06-22 Alcan International Limited Récipient à micro-ondes
EP0291309A2 (fr) * 1987-05-15 1988-11-17 Alcan International Limited Récipient pour four à micro-ondes et son mode d'emploi
WO1989004585A1 (fr) * 1987-11-10 1989-05-18 The Pillsbury Company Dispositif sensible aux micro-ondes et combine a une grille pour un emballage pour four a micro-ondes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000797A1 (fr) * 1977-08-04 1979-02-21 THE PROCTER & GAMBLE COMPANY Modérateur pour énergie à micro-ondes
AU2642588A (en) * 1987-12-01 1989-06-01 Mccain Foods (Aust) Pty. Ltd. Food product and package
DE68916798T2 (de) * 1988-05-23 1994-12-15 Pillsbury Co Suszeptor zum erhitzen eines einzelnen nahrungsmittels.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246041A2 (fr) * 1986-05-09 1987-11-19 Alcan International Limited Récipient à micro-ondes
EP0271981A2 (fr) * 1986-05-09 1988-06-22 Alcan International Limited Récipient à micro-ondes
EP0291309A2 (fr) * 1987-05-15 1988-11-17 Alcan International Limited Récipient pour four à micro-ondes et son mode d'emploi
WO1989004585A1 (fr) * 1987-11-10 1989-05-18 The Pillsbury Company Dispositif sensible aux micro-ondes et combine a une grille pour un emballage pour four a micro-ondes

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016084A1 (fr) * 1991-03-11 1992-09-17 Alcan International Limited Four tunnel a microondes
US5160819A (en) * 1991-03-11 1992-11-03 Alcan International Limited Microwave tunnel oven having means for generating higher order modes in loads
WO1992019511A1 (fr) * 1991-04-24 1992-11-12 Beckett Industries Inc. Bac de cuisson pour four a micro-ondes
WO1992019515A1 (fr) * 1991-05-06 1992-11-12 Beckett Industries Inc. Boite a pizza pouvant etre rechauffee dans un four a micro-ondes
EP0661005A1 (fr) * 1993-09-24 1995-07-05 Unilever Plc Produit alimentaire composite à cuire au micro-onde
US5747086A (en) * 1993-09-24 1998-05-05 Unilever Patent Holdings B.V. Method of cooking a food product using a mode filtering structure
EP0650905A2 (fr) * 1993-10-27 1995-05-03 James River Paper Company, Inc. Emballage pour four à micro-ondes avec fonction pour régler l'adaptation de l'impédance
EP0650905A3 (fr) * 1993-10-27 1995-08-23 James River Paper Co Emballage pour four à micro-ondes avec fonction pour régler l'adaptation de l'impédance.
EP0650670B1 (fr) * 1993-11-01 1998-08-12 Unilever Plc Procédé de fixation thermique d'une pâte enrobant un produit alimentaire au moyen d'un chauffage diélectrique
WO1996038352A1 (fr) * 1995-06-02 1996-12-05 Beckett Technologies Corp. Structure d'emballage 'intelligente' pour le chauffage par micro-ondes
WO1998035887A1 (fr) * 1997-02-12 1998-08-20 Fort James Corporation Capteur d'energie a motifs pour four micro-ondes
GB2409140A (en) * 2002-08-27 2005-06-15 Christopher Paul Wedlock Microwave dispersing device
WO2004020310A1 (fr) * 2002-08-27 2004-03-11 Christopher Paul Wedlock Dispositif de dispersion de micro-ondes
US8680448B2 (en) 2006-05-15 2014-03-25 Graphic Packaging International, Inc. Microwavable construct with contoured heating surface
US8803050B2 (en) 2006-05-15 2014-08-12 Graphic Packaging International, Inc. Microwavable construct with contoured heating surface
US8785826B2 (en) 2007-01-22 2014-07-22 Graphic Packaging International, Inc. Even heating microwavable container
EP2453177A1 (fr) * 2007-01-22 2012-05-16 Graphic Packaging International, Inc. Récipient à micro-ondes pour chauffage de four
EP2106517A4 (fr) * 2007-01-22 2010-11-10 Graphic Packaging Int Inc Contenant allant au micro-onde et chauffant de manière égale
EP2106517A1 (fr) * 2007-01-22 2009-10-07 Graphic Packaging International, Inc. Contenant allant au micro-onde et chauffant de manière égale
US9764887B2 (en) 2007-01-22 2017-09-19 Graphic Packaging International, Inc. Even heating microwavable container
US8872079B2 (en) 2008-02-18 2014-10-28 Graphic Packaging International, Inc. Apparatus for preparing a food item in a microwave oven
US8901469B2 (en) 2008-02-18 2014-12-02 Graphic Packaging International, Inc. Method and apparatus for cooking raw food items in a microwave oven
US10351329B2 (en) 2008-02-18 2019-07-16 Graphic Packaging International, Llc Apparatus for preparing a food item in a microwave oven
US9493287B2 (en) 2008-07-11 2016-11-15 Graphic Packaging International, Inc. Microwave heating container
US10683156B2 (en) 2008-07-11 2020-06-16 Graphic Packaging International, Llc Microwave heating container
US8395101B2 (en) 2009-05-01 2013-03-12 Graphic Packaging International, Inc. Construct with locating feature
US9656776B2 (en) 2013-12-16 2017-05-23 Graphic Packaging International, Inc. Construct with stiffening features

Also Published As

Publication number Publication date
BR9000574A (pt) 1991-01-15
AU4917190A (en) 1990-08-16
CA1339540C (fr) 1997-11-11
AU628918B2 (en) 1992-09-24
DE69014331D1 (de) 1995-01-12
FI900648A0 (fi) 1990-02-09
EP0382399A3 (fr) 1992-02-12
EP0382399B1 (fr) 1994-11-30
JPH02270294A (ja) 1990-11-05
NO900546D0 (no) 1990-02-05
JP3049071B2 (ja) 2000-06-05
DE69014331T2 (de) 1995-04-27
ZA90446B (en) 1990-10-31
NO900546L (no) 1990-08-10
ATE114598T1 (de) 1994-12-15

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