EP0431292A2 - Film-type combination of materials - Google Patents

Film-type combination of materials Download PDF

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Publication number
EP0431292A2
EP0431292A2 EP90120174A EP90120174A EP0431292A2 EP 0431292 A2 EP0431292 A2 EP 0431292A2 EP 90120174 A EP90120174 A EP 90120174A EP 90120174 A EP90120174 A EP 90120174A EP 0431292 A2 EP0431292 A2 EP 0431292A2
Authority
EP
European Patent Office
Prior art keywords
adhesive coating
weak point
materials
cold adhesive
heated
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
EP90120174A
Other languages
German (de)
French (fr)
Other versions
EP0431292A3 (en
Inventor
Manfred Hera
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.)
Huhtamaki Grundstuecksverwaltungs GmbH Ronsberg
Original Assignee
4P Verpackungen Ronsberg GmbH
Unilever PLC
Unilever NV
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 4P Verpackungen Ronsberg GmbH, Unilever PLC, Unilever NV filed Critical 4P Verpackungen Ronsberg GmbH
Publication of EP0431292A2 publication Critical patent/EP0431292A2/en
Publication of EP0431292A3 publication Critical patent/EP0431292A3/en
Ceased 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
    • 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

Definitions

  • the invention relates to a film-like material combination for packaging foods which are to be heated in the packaged state in a microwave oven or the like.
  • the invention has for its object to provide a combination of materials for the stated purpose, with which the food can be heated in the packaged state.
  • a cold adhesive coating is provided for the closure of the packaging, which is provided with at least one weak point, at which water vapor generated during heating can escape while separating the weak point.
  • the weak point is still closed, so that the filling material is neither contaminated nor can it escape. Only when a certain amount is exceeded The weak point opens and the water vapor escapes.
  • the cold adhesive coating is designed with a smaller width in the region of the weak points.
  • This smaller width of the strip-shaped cold adhesive coating is sufficient for normal sealing of the packaging, but cannot withstand the increased internal pressure when water vapor is generated.
  • paper is provided on the outside of the material structure, followed by PETP on the inside, which in turn serves as a carrier for the cold adhesive coating.
  • the particularly hot packaging is easier to handle.
  • FIG. 1 in FIG. 1 denotes a combination of materials that is used to pack food that can be heated in a microwave oven.
  • the material combination consists of a carrier layer 2 made of paper, onto which a plastic film 4 made of PETP is applied with the aid of a laminating adhesive 3.
  • This PETP layer 4 is a Cold adhesive 5 applied in strips, which comes to lie on top of one another when a blank of this material is folded into a package and thereby adheres to itself.
  • the strip-shaped cold glue is constricted in several places, so that weak spots 6 form, in the area of which there is only a relatively narrow cold glue bridge. When they are unfolded, these narrow bridges come to rest on one another so that their narrow width is preserved.
  • the paper layer 2 can be provided with paint 7 and a lacquer layer 8 on its side facing away from the plastic layer, as a result of which the paper receives additional protection.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Package Specialized In Special Use (AREA)
  • Cartons (AREA)
  • Packages (AREA)

Abstract

A film-type combination of materials for packaging food to be heated in the packaged state in a microwave oven or the like, wherein a coating of cold-bonding agent is provided for the closure of the package, which coating is provided with at least one weak point at which water vapour, occurring during heating, can tear the weak point and escape. <IMAGE>

Description

Die Erfindung betrifft eine folienartige Materialkombination zum Verpacken von Lebensmitteln, welche im verpackten Zustand in einem Mikrowellenofen oder dergleichen erhitzt werden sollen.The invention relates to a film-like material combination for packaging foods which are to be heated in the packaged state in a microwave oven or the like.

Beim Erhitzen der meisten Lebensmittel entsteht Wasserdampf, der die ungeöffnete Verpackung aus einem derartigen Material zum Platzen bringen würde. Andererseits ist es aber auch nicht möglich, die Verpackung vor dem Erhitzen zu öffnen, da dann das Füllgut austreten würde.When most food is heated, water vapor is generated which would cause the unopened packaging made of such a material to burst. On the other hand, it is also not possible to open the packaging before heating, as the contents would then escape.

Der Erfindung liegt die Aufgabe zugrunde, eine Materialkombination für den genannten Zweck zu schaffen, mit der die Lebensmittel im verpackten Zustand erhitzt werden können.The invention has for its object to provide a combination of materials for the stated purpose, with which the food can be heated in the packaged state.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß für den Verschluß der Verpackung eine Kaltkleberbeschichtung vorgesehen ist, welche mit wenigstens einer Schwachstelle versehen ist, an der beim Erhitzen entstehender Wasserdampf unter Auftrennung der Schwachstelle entweichen kann.This object is achieved in that a cold adhesive coating is provided for the closure of the packaging, which is provided with at least one weak point, at which water vapor generated during heating can escape while separating the weak point.

Beim Beginn der Erhitzung ist die Schwachstelle noch geschlossen, so daß das Füllgut weder verunreinigt wird, noch austreten kann. Erst bei Überschreiten eines gewissen Innendrucks geht die Schwachstelle auf und läßt den Wasserdampf entweichen.At the beginning of the heating, the weak point is still closed, so that the filling material is neither contaminated nor can it escape. Only when a certain amount is exceeded The weak point opens and the water vapor escapes.

Bei einer streifenförmig aufgetragenen Kaltkleberbeschichtung ist es erfindungsgemäß sehr vorteilhaft, wenn die Kaltkleberbeschichtung im Bereich der Schwachstellen mit geringerer Breite ausgebildet ist.In the case of a cold adhesive coating applied in the form of a strip, it is very advantageous according to the invention if the cold adhesive coating is designed with a smaller width in the region of the weak points.

Diese geringere Breite der streifenförmigen Kaltkleberbeschichtung reicht zum normalen Abdichten der Verpackung völlig aus, kann aber dem erhöhten Innendruck beim Entstehen von Wasserdampf nicht standhalten.This smaller width of the strip-shaped cold adhesive coating is sufficient for normal sealing of the packaging, but cannot withstand the increased internal pressure when water vapor is generated.

Sehr vorteilhaft ist es auch, wenn erfindungsgemäß an der Außenseite des Materialaufbaus Papier vorgesehen ist, an das sich nach innen PETP anschließt, das wiederum als Träger für die Kaltkleberbeschichtung dient.It is also very advantageous if, according to the invention, paper is provided on the outside of the material structure, followed by PETP on the inside, which in turn serves as a carrier for the cold adhesive coating.

Mit einer Papieraußenschicht läßt sich die insbesondere heiße Verpackung leichter handhaben.With a paper outer layer, the particularly hot packaging is easier to handle.

In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispiels veranschaulicht. Dabei zeigen:

  • Fig.1 eine Ansicht einer Materialkombination mit streifenförmig aufgebrachter Kaltkleberbeschichtung und
  • Fig.2 einen Schnitt durch die Materialkombination.
The invention is illustrated in the drawing using an exemplary embodiment. Show:
  • 1 shows a view of a material combination with a cold-adhesive coating applied in strips and
  • 2 shows a section through the combination of materials.

Mit 1 ist in Fig.1 eine Materialkombination bezeichnet, die zum Verpacken von Lebensmitteln dient, die in einem Mikrowellenofen erhitzbar sind. Wie insbesondere aus Fig.2 ersichtlich ist, besteht die Materialkombination aus einer Trägerschicht 2 aus Papier, auf die mit Hilfe eines Kaschierklebers 3 eine Kunststoffolie 4 aus PETP aufgebracht ist. Auf diese PETP-Schicht 4 ist ein Kaltkleber 5 streifenförmig aufgebracht, der beim Zusammenfalten eines Zuschnittes dieses Materials zu einer Verpackung aufeinander zu liegen kommt und dabei gegen sich selbst klebt. An mehreren Stellen ist der streifenförmige Kaltkleber eingeschnürt, so daß sich Schwachstellen 6 bilden, in deren Bereich nur eine verhältnismäßig schmale Kaltkleberbrücke vorhanden ist. Beim Aufeinanderfalten kommen diese schmalen Brücken aufeinander zu liegen, so daß sie in ihrer geringen Breite erhalten bleiben.1 in FIG. 1 denotes a combination of materials that is used to pack food that can be heated in a microwave oven. As can be seen in particular from FIG. 2, the material combination consists of a carrier layer 2 made of paper, onto which a plastic film 4 made of PETP is applied with the aid of a laminating adhesive 3. This PETP layer 4 is a Cold adhesive 5 applied in strips, which comes to lie on top of one another when a blank of this material is folded into a package and thereby adheres to itself. The strip-shaped cold glue is constricted in several places, so that weak spots 6 form, in the area of which there is only a relatively narrow cold glue bridge. When they are unfolded, these narrow bridges come to rest on one another so that their narrow width is preserved.

Wie in Fig.2 dargestellt kann die Papierschicht 2 auf ihrer von der Kunststoffschicht abgewandten Seite mit Farbe 7 sowie einer Lackschicht 8 versehen sein, wodurch das Papier einen zusätzlichen Schutz erhält.As shown in FIG. 2, the paper layer 2 can be provided with paint 7 and a lacquer layer 8 on its side facing away from the plastic layer, as a result of which the paper receives additional protection.

Claims (3)

1. Folienartige Materialkombination zum Verpacken von Lebensmitteln, welche im verpackten Zustand in einem Mikrowellenofen oder dergleichen erhitzt werden sollen, dadurch gekennzeichnet, daß für den Verschluß der Verpackung eine Kaltkleberbeschichtung vorgesehen ist, welche mit wenigstens einer Schwachstelle versehen ist, an der beim Erhitzen entstehender Wasserdampf unter Auftrennung der Schwachstelle entweichen kann.1. Foil-like material combination for packaging foods which are to be heated in the packaged state in a microwave oven or the like, characterized in that a cold adhesive coating is provided for the closure of the packaging, which is provided with at least one weak point at which water vapor formed when heated can escape by separating the weak point. 2. Materialkombination nach Anspruch 1, mit einer streifenförmig aufgetragenen Kaltkleberbeschichtung, dadurch gekennzeichnet, daß die Kaltkleberbeschichtung im Bereich der Schwachstellen mit geringerer Breite ausgebildet ist.2. Material combination according to claim 1, with a strip-shaped cold adhesive coating, characterized in that the cold adhesive coating is formed in the weak points with a smaller width. 3. Materialkombination nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß an der Außenseite des Materialaufbaus Papier vorgesehen ist, an das sich nach innen PETP anschließt, das wiederum als Träger für die Kaltkleberbeschichtung dient.3. Material combination according to claim 1 or 2, characterized in that paper is provided on the outside of the material structure, which is followed by PETP on the inside, which in turn serves as a carrier for the cold adhesive coating.
EP19900120174 1989-11-23 1990-10-20 Film-type combination of materials Ceased EP0431292A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938809 1989-11-23
DE19893938809 DE3938809A1 (en) 1989-11-23 1989-11-23 FILM-LIKE MATERIAL COMBINATION

Publications (2)

Publication Number Publication Date
EP0431292A2 true EP0431292A2 (en) 1991-06-12
EP0431292A3 EP0431292A3 (en) 1992-04-01

Family

ID=6394048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900120174 Ceased EP0431292A3 (en) 1989-11-23 1990-10-20 Film-type combination of materials

Country Status (2)

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EP (1) EP0431292A3 (en)
DE (1) DE3938809A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10253916B4 (en) * 2002-11-19 2005-07-28 Volkmar Frenzel Eiscrem und Tiefkühlkost Microwave bag with pressure relief valves
DE102006017834A1 (en) * 2006-04-13 2007-10-18 Cfs Kempten Gmbh A microwaveable packaging
DE102009018489A1 (en) * 2009-04-22 2010-10-28 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Packaging, in particular microwave packaging bags, with pressure compensating valve with variable flow cross section

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256791A2 (en) * 1986-08-18 1988-02-24 Nabisco Brands, Inc. Package for microwaveable popcorn, method for production of the package, and apparatus for sealing the package
EP0294087A2 (en) * 1987-06-05 1988-12-07 Nabisco Brands, Inc. Microwave popcorn product with serving bowl feature

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937396A (en) * 1974-01-18 1976-02-10 Schneider William S Valve for vented package
US4261504A (en) * 1979-09-21 1981-04-14 Maryland Cup Corporation Heat-sealable, ovenable containers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256791A2 (en) * 1986-08-18 1988-02-24 Nabisco Brands, Inc. Package for microwaveable popcorn, method for production of the package, and apparatus for sealing the package
EP0294087A2 (en) * 1987-06-05 1988-12-07 Nabisco Brands, Inc. Microwave popcorn product with serving bowl feature

Also Published As

Publication number Publication date
EP0431292A3 (en) 1992-04-01
DE3938809A1 (en) 1991-05-29

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