EP0216140A1 - Cover for an open vessel the contents of which is to be heated in a microwave oven - Google Patents

Cover for an open vessel the contents of which is to be heated in a microwave oven Download PDF

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Publication number
EP0216140A1
EP0216140A1 EP86111475A EP86111475A EP0216140A1 EP 0216140 A1 EP0216140 A1 EP 0216140A1 EP 86111475 A EP86111475 A EP 86111475A EP 86111475 A EP86111475 A EP 86111475A EP 0216140 A1 EP0216140 A1 EP 0216140A1
Authority
EP
European Patent Office
Prior art keywords
cover
container
microwave oven
heated
contents
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.)
Ceased
Application number
EP86111475A
Other languages
German (de)
French (fr)
Inventor
Friederun Köhnen
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.)
Melitta Werke Bentz and Sohn KG
Original Assignee
Melitta Werke Bentz and Sohn KG
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 Melitta Werke Bentz and Sohn KG filed Critical Melitta Werke Bentz and Sohn KG
Publication of EP0216140A1 publication Critical patent/EP0216140A1/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • 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
    • B65D2205/00—Venting means
    • B65D2205/02—Venting holes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture

Definitions

  • the invention relates to a cover for an open container, the content of which is to be heated in a microwave oven, and to a method for covering the content of such a container.
  • a cover made of a cellophane has ventilation holes, the Cellular glass film is preferably transparent.
  • Such a cellophane film can be applied particularly well and easily to the open, generally bowl-shaped or pot-shaped container, for example by the cellophane film being moistened, placed over the container opening and pressed on the opening edge and on this adjoining outer surface area of the container wall, so that it adheres to the container and is not blown off the container by the air flow generated by the fan of the microwave oven.
  • the film When heated by the microwave radiation, the film is dried and then stretched over the container opening, while the air which expands as a result of heating in the container can escape from the container through the ventilation holes.
  • cellophane film By choosing cellophane film as a cover, all difficulties that arise with other film covers or flexible covers are avoided.
  • polyethylene films are not suitable for covering containers to be heated in microwave ovens because they are softened by the microwave radiation and gases escape from them. Paper that could be used in a microwave oven is not transparent on the one hand, so it does not allow a view of the container contents, and on the other hand can hardly be attached to the container in such a simple way that it is not blown away by the air draft generated by the fan.
  • an open container 1 for example made of glass or porcelain, is shown, the Opening is closed with a cellophane film 2, which adheres to the outer peripheral surface of the container 1.
  • the cellophane film is placed, for example, in the moistened state over the opening of the container 1 and then pressed against the outer surface.
  • the cellophane film contains holes 3 through which the air that expands when heated can escape.
  • the cellophane film used for example, is an unpainted cellophane film with a thickness of 20 ⁇ m, marketed under the name Cellophan by Wolff Walsrode AG, 3036 Bomlitz, into which holes were punched at a distance of 25 mm using a needle roller.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Cookers (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

Zur Abdeckung eines offenen Behälters (1), dessen Inhalt in einem Mikrowellenherd erwärmt werden soll, wird eine Zellglasfolie (2) verwendet, die Belüftungslöcher (3) aufweist.To cover an open container (1), the contents of which are to be heated in a microwave oven, a cellophane film (2) is used, which has ventilation holes (3).

Description

Die Erfindung bezieht sich auf eine Abdeckung für einen offenen Behälter, dessen Inhalt in einem Mikrowellenherd erwärmt werden soll, sowie auf ein Verfahren zum Abdecken des Inhaltes eines solchen Behälters.The invention relates to a cover for an open container, the content of which is to be heated in a microwave oven, and to a method for covering the content of such a container.

Es ist bereits bekannt, offene Behälter, deren Inhalt in einem Mikrowellenherd erwärmt werden soll, mit einem Glasdeckel o.ä. abzudecken, um auf diese Weise das Antrocknen der oberen Schicht des Inhaltes infolge der Erwärmung zu vermeiden. Ein derartiger Glasdeckel muß jedoch im wesentlichen an die Form des Behälters angepaßt sein und auf diesem eine stabile Lage einnehmen, d.h. mit einem solchen Glasdeckel lassen sich nicht beliebig geformte Behälter vernünftig abdecken.It is already known to open containers, the contents of which are to be heated in a microwave oven, with a glass lid or the like. to prevent drying of the top layer of the contents due to heating. However, such a glass lid must be essentially adapted to the shape of the container and have a stable position on it, i.e. Such a glass lid cannot reasonably cover containers of any shape.

Es ist Aufgabe der Erfindung, eine für beliebig geformte, offene Behälter geeignete Abdeckung zu schaffen, die es ermöglicht, den Behälterinhalt in einem Mikrowellenherd zu erwärmen.It is an object of the invention to provide a cover which is suitable for any shape of open container and which enables the contents of the container to be heated in a microwave oven.

Zur Lösung dieser Aufgabe dient eine Abdeckung aus einer Belüftungslöcher aufweisenden Zellglasfolie, wobei die Zellglasfolie vorzugsweise durchsichtig ist.To solve this problem, a cover made of a cellophane has ventilation holes, the Cellular glass film is preferably transparent.

Eine derartige Zellglasfolie läßt- sich besonders gut und einfach auf dem offenen, im allgemeinen schalen-oder topfförmigen Behälter anbringen, etwa dadurch, daß die Zellglasfolie, angefeuchtet, über die Behälteröffnung gelegt und am öffnungsrand sowie an diesen anschließenden äußeren Flächenbereich der Behälterwand angedrückt wird, so daß sie am Behälter haftet und nicht durch den vom Ventilator des Mikrowellenherds erzeugten Luftstrom vom Behälter heruntergeblasen wird. Beim Erwärmen durch die Mikrowellenbestrahlung wird die Folie getrocknet und spannt sich dann über die Behälteröffnung, während die sich infolge Erwärmung im Behälter ausdehnende Luft durch die Belüftungslöcher aus dem Behälter entweichen kann.Such a cellophane film can be applied particularly well and easily to the open, generally bowl-shaped or pot-shaped container, for example by the cellophane film being moistened, placed over the container opening and pressed on the opening edge and on this adjoining outer surface area of the container wall, so that it adheres to the container and is not blown off the container by the air flow generated by the fan of the microwave oven. When heated by the microwave radiation, the film is dried and then stretched over the container opening, while the air which expands as a result of heating in the container can escape from the container through the ventilation holes.

Durch die Wahl von Zellglasfolie als Abdeckung werden alle Schwierigkeiten vermieden, die mit anderen Folienabdeckungen oder flexiblen Abdeckungen entstehen. So eignen sich beispielsweise Polyethylenfolien nicht zur Abdeckung von in Mikrowellenherden zu erwärmenden Behältern, weil sie durch die Mikrowellenbestrahlung erweicht werden und aus ihnen Gase austreten. Papier, das an sich in einem Mikrowellenherd eingesetzt werden könnte, ist einerseits nicht durchsichtig, ermöglicht also keinen Blick auf den Behälterinhalt, und läßt sich andererseits kaum auf einfache Weise so am Behälter befestigen, daß es nicht vom vom Ventilator erzeugten Luftzug weggeblasen wird.By choosing cellophane film as a cover, all difficulties that arise with other film covers or flexible covers are avoided. For example, polyethylene films are not suitable for covering containers to be heated in microwave ovens because they are softened by the microwave radiation and gases escape from them. Paper that could be used in a microwave oven is not transparent on the one hand, so it does not allow a view of the container contents, and on the other hand can hardly be attached to the container in such a simple way that it is not blown away by the air draft generated by the fan.

Die Erfindung wird im folgenden anhand der Figur näher erläutert.The invention is explained in more detail below with reference to the figure.

In der Figur ist ein beispielsweise aus Glas oder Porzellan bestehender, offener Behälter 1 gezeigt, dessen Öffnung mit einer Zellglasfolie 2 verschlossen ist, die an der äußeren Umfangsfläche des Behälters 1 haftet. Hierzu ist die Zellglasfolie beispielsweise im angefeuchteten Zustand über die Öffnung des Behälters 1 gelegt und dann an die Außenfläche angedrückt worden.In the figure, an open container 1, for example made of glass or porcelain, is shown, the Opening is closed with a cellophane film 2, which adheres to the outer peripheral surface of the container 1. For this purpose, the cellophane film is placed, for example, in the moistened state over the opening of the container 1 and then pressed against the outer surface.

Wie dargestellt, enthält die Zellglasfolie Löcher 3, durch die hindurch sich die beim Erwärmen ausdehnende Luft entweichen kann. Als Zellglasfolie wird beispielsweise eine unter der Bezeichnung Cellophan von der Wolff Walsrode AG, 3036 Bomlitz, vertriebene, unlackierte Zellglasfolie mit einer Dicke von 20 µm verwendet, in die mittels einer Nadelwalze im Abstand von 25 mm liegende Löcher gestochen wurden.As shown, the cellophane film contains holes 3 through which the air that expands when heated can escape. The cellophane film used, for example, is an unpainted cellophane film with a thickness of 20 μm, marketed under the name Cellophan by Wolff Walsrode AG, 3036 Bomlitz, into which holes were punched at a distance of 25 mm using a needle roller.

Claims (4)

1. Abdeckung für einen offenen Behälter (1), dessen Inhalt in einem Mikrowellenherd erwärmt werden soll, dadurch gekennzeichnet, daß die Abdeckung aus einer Belüftungslöcher (3) aufweisenden Zellglasfolie (2) besteht.1. Cover for an open container (1), the content of which is to be heated in a microwave oven, characterized in that the cover consists of a ventilation holes (3) having cellophane film (2). 2. Abdeckung nach Anspruch 1, dadurch gekennzeichnet, daß die 2ellglasfolie (2) durchsichtig ist.2. Cover according to claim 1, characterized in that the double glass film (2) is transparent. 3. Verfahren zum Abdecken des Inhaltes eines in einen Mikrowellenherd einzusetzenden, offenen Behälters (1), dadurch gekennzeichnet, daß über die Behälteröffnung eine angefeuchtete, Belüftungslöcher (3) aufweisende Zellglasfolie (2) gelegt und am Öffnungsrand sowie an den an diesen anschließenden, äußeren Flächenbereich der Behälterwand angedrückt wird.3. A method for covering the contents of an open container (1) to be inserted into a microwave oven, characterized in that a moistened, ventilation holes (3) having cellophane film (2) is placed over the container opening and on the opening edge and on the adjoining outer one Area of the container wall is pressed. 4. Verwendung einer Löcher (3) aufweisenden Zellglasfolie (2) als Abdeckung für einen offenen Behälter (1), dessen Inhalt in einem Mikrowellenherd erwärmt werden soll.4. Use of a cellophane film (2) having holes (3) as a cover for an open container (1), the contents of which are to be heated in a microwave oven.
EP86111475A 1985-08-22 1986-08-19 Cover for an open vessel the contents of which is to be heated in a microwave oven Ceased EP0216140A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3530008 1985-08-22
DE3530008A DE3530008C1 (en) 1985-08-22 1985-08-22 Cover for a container

Publications (1)

Publication Number Publication Date
EP0216140A1 true EP0216140A1 (en) 1987-04-01

Family

ID=6279092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111475A Ceased EP0216140A1 (en) 1985-08-22 1986-08-19 Cover for an open vessel the contents of which is to be heated in a microwave oven

Country Status (8)

Country Link
US (1) US4797523A (en)
EP (1) EP0216140A1 (en)
JP (1) JPS6294564A (en)
AU (1) AU584729B2 (en)
DE (1) DE3530008C1 (en)
DK (1) DK354986A (en)
FI (1) FI863386A (en)
NO (1) NO863067L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268895A2 (en) * 1986-11-27 1988-06-01 Melitta Haushaltsprodukte GmbH & Co. Kommanditgesellschaft Covering for a container
GB2213689A (en) * 1987-12-08 1989-08-16 Gen Foods Ltd Improvements in or relating to containers

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177332A (en) * 1988-04-29 1993-01-05 E. I. Du Pont De Nemours And Company Microwave energy susceptible conformable laminate packaging materials
US5235149A (en) * 1990-03-28 1993-08-10 Societe Alsacienne D'aluminium Container for a product to be heated in a microwave oven
EP0596101A4 (en) * 1992-05-21 1997-01-29 Campbell Soup Co Metal container and use thereof in a microwave oven
JPH07232769A (en) * 1993-12-24 1995-09-05 Mitsuba Sangyo Kk Wrapping material and wrapper for use in microwave heating
US5436434A (en) * 1994-02-09 1995-07-25 Baird; Grant L. Splatter guard device for microwave ovens
US6137097A (en) * 1999-08-13 2000-10-24 Smith; Rose Mary Resizable microwave oven liner apparatus and method
US7011228B2 (en) * 2002-11-27 2006-03-14 S.C. Johnson Home Storage, Inc. Sealable container cover
US20040164074A1 (en) * 2003-02-21 2004-08-26 Gloria Newton Disposable microwave protector
US20090283519A1 (en) * 2003-02-21 2009-11-19 Gloria Newton Disposable microwave protector
WO2004113194A2 (en) * 2003-06-13 2004-12-29 S. C. Johnson Home Storage, Inc. Disposable container cover with elastic replacement
US6868980B2 (en) * 2003-06-16 2005-03-22 S. C. Johnson Home Storage, Inc. Container with detachable, selectively vented lid
CA2518242A1 (en) * 2004-09-01 2006-03-01 Quickwave International Corp. Cooking apparatus and method of use
US20090183807A1 (en) * 2007-08-16 2009-07-23 Sadlier Claus E More versatile flexible cover and method of manufacture
US8435372B1 (en) 2007-08-16 2013-05-07 Les Industries Touch Inc. Manufacture of versatile flexible cover using mandrel
US20090321431A1 (en) * 2008-06-26 2009-12-31 Rasha Wafikzaki Farag Anti-splatter cover for microwave cooking
US20130068759A1 (en) * 2011-09-19 2013-03-21 Victor Mirea Disposable dish covers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495435A (en) * 1947-01-14 1950-01-24 Raytheon Mfg Co Method of treating foodstuffs
GB1191518A (en) * 1967-11-27 1970-05-13 Dysona Ind Ltd Improvements relating to Plates for Microwave Ovens.
US3587447A (en) * 1968-11-19 1971-06-28 Dennis J Larkin Cooking utensil
FR2109188A5 (en) * 1970-10-06 1972-05-26 Eleveurs Fermiers Reunis
US4015085A (en) * 1975-04-30 1977-03-29 Larry Lakey Container for the microwave heating of frozen sandwiches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823757C2 (en) * 1978-05-31 1982-10-21 Hoechst Ag, 6000 Frankfurt Process for the production of swellable fibers or swellable textile fabrics
DK169553B1 (en) * 1979-08-08 1994-11-28 Ucb Sa Heat-sealable packaging film, process for its manufacture and packaging thereof
DE3040279A1 (en) * 1980-10-25 1982-06-16 Hoechst Ag, 6000 Frankfurt FOR FOODS, ESPECIALLY SAUSAGE PRODUCTS, TUBULAR SLEEVE SUITABLE WITH A STITCH SEAM, METHOD FOR THEIR PRODUCTION AND THEIR USE FOR THE PRODUCTION OF CURVED OR RING SHAPED SAUSAGES
US4486507A (en) * 1981-05-14 1984-12-04 Feldmuhle Aktiengesellschaft Transparent, shrinkable film, consisting of one or several layers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495435A (en) * 1947-01-14 1950-01-24 Raytheon Mfg Co Method of treating foodstuffs
GB1191518A (en) * 1967-11-27 1970-05-13 Dysona Ind Ltd Improvements relating to Plates for Microwave Ovens.
US3587447A (en) * 1968-11-19 1971-06-28 Dennis J Larkin Cooking utensil
FR2109188A5 (en) * 1970-10-06 1972-05-26 Eleveurs Fermiers Reunis
US4015085A (en) * 1975-04-30 1977-03-29 Larry Lakey Container for the microwave heating of frozen sandwiches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268895A2 (en) * 1986-11-27 1988-06-01 Melitta Haushaltsprodukte GmbH & Co. Kommanditgesellschaft Covering for a container
EP0268895A3 (en) * 1986-11-27 1989-09-20 Melitta-Werke Bentz & Sohn Covering for a container
GB2213689A (en) * 1987-12-08 1989-08-16 Gen Foods Ltd Improvements in or relating to containers

Also Published As

Publication number Publication date
NO863067L (en) 1987-02-23
JPS6294564A (en) 1987-05-01
NO863067D0 (en) 1986-07-29
DK354986D0 (en) 1986-07-25
AU584729B2 (en) 1989-06-01
FI863386A (en) 1987-02-23
DE3530008C1 (en) 1986-11-27
US4797523A (en) 1989-01-10
AU6093386A (en) 1987-02-26
FI863386A0 (en) 1986-08-21
DK354986A (en) 1987-02-23

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