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EP1140653B2 - Resealable plastic packaging with at least one knob - Google Patents

Resealable plastic packaging with at least one knob Download PDF

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Publication number
EP1140653B2
EP1140653B2 EP99963441A EP99963441A EP1140653B2 EP 1140653 B2 EP1140653 B2 EP 1140653B2 EP 99963441 A EP99963441 A EP 99963441A EP 99963441 A EP99963441 A EP 99963441A EP 1140653 B2 EP1140653 B2 EP 1140653B2
Authority
EP
European Patent Office
Prior art keywords
packaging
knob
plastic packaging
film
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99963441A
Other languages
German (de)
French (fr)
Other versions
EP1140653A1 (en
EP1140653B1 (en
Inventor
Dieter Berndt
Matthias Giebel
Christoph Waldau
Ulrich Reiners
Rudi Fux
Roland Karlsson
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.)
CFS Kempten GmbH
Original Assignee
CFS Kempten GmbH
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
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Application filed by CFS Kempten GmbH filed Critical CFS Kempten GmbH
Publication of EP1140653A1 publication Critical patent/EP1140653A1/en
Publication of EP1140653B1 publication Critical patent/EP1140653B1/en
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Publication of EP1140653B2 publication Critical patent/EP1140653B2/en
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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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2072—Mechanical means
    • B65D77/2088—Mechanical means attached to the cover
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2072—Mechanical means
    • B65D77/2076—Mechanical means provided by the cover itself

Definitions

  • the present invention relates to a resealable plastic package consisting of a packaging tray and a cover sheet, the cover sheet being partially peelably sealed to the packaging tray.
  • Packaging goods are increasingly being offered for sale in plastic packaging today. These plastic packages have a packaging tray, in which the packaged goods is located and a lid film. The lidding foil is sealed to the packaging tray. Since the packaged goods are often not consumed immediately after opening, it is advantageous if the pack can be resealed after opening.
  • EP 0 381 329 or EP0 379 927 in which either methods and apparatus for producing a resealable package and / or the resealable package itself are taught. All the resealable packages disclosed in the above publications either have the disadvantage of being expensive to produce and / or poorly resealable.
  • the object is achieved by providing a resealable plastic packaging from a packaging tray and a lid film according to claim 1.
  • a packaging tray is any packaging tray known to the person skilled in the art, which has been produced from a thermoplastic and dimensionally stable single-layer or multi-layer film which is preferably customary for the packaging of foods.
  • the film must have on at least one of its two surfaces a sealing layer which is peelable.
  • the sealing layer used is preferably a mixture of LDPE (low density polyethylene) and a polybutylene.
  • the mixture preferably contains 15 to 30% by weight, particularly preferably 20 to 28% by weight, of polybutylene.
  • the polybutylene has a melt index (MFI) in the range of 0.3 to 2.0 g / 10 min (190 ° C and 216 kg according to ASTM 1238).
  • the packaging tray is produced from a multilayer film with a foamed carrier film, preferably a foamed polyolefin film, particularly preferably polypropylene film.
  • the packaging tray is made of a film, as disclosed in the patent application with the file number of the German Patent Office 198 40 046.2.
  • thermoformed, preferably thermoformed packaging trays are closed after filling with the packaged with a known to those skilled, thermoformable lidding films.
  • cover films are particularly suitable multilayer films with a gas barrier layer of ethylene vinyl alcohol copolymer, preferably from polyethylene terephthalate (PET) / Haftvermlttler GmbH / polyethylene / adhesive / middle layer / ethylene-vinyl alcohol copolymer / adhesive layer / polyethylene, wherein the polyethylene terephthalate layer may be replaced by polypropylene.
  • the cover film of the packaging according to the invention may also have SiO x as a gas barrier layer.
  • the cover sheet of PET / SiO x / adhesion promoter / polyethylene is constructed.
  • the lid film is sealed according to the invention to the packaging tray in the sealing area, wherein the lidding film is at least partially peelable sealed to the packaging tray.
  • the lidding film is heated at a temperature of from 130 ° C to 150 ° C, preferably from 135 to 145 ° C, and a pressure of from 3 to 8 • 10 5 N / m 2 , preferably from 4.0 to 5, 0 • 10 5 N / m 2 sealed to the packaging tray.
  • the solid seal is preferably carried out at a temperature at least 10 ° C. and preferably twice the pressure than the peelable seal.
  • a solid seal in the sense of the invention is a seal in which the detachment force of the cover film must be at least five times higher than in the area of the peelable seal.
  • the sealing area on the packaging tray is preferably located on a horizontal plane above the packaged goods and preferably extends around the entire packaged goods on this level.
  • the lidding film may preferably at least one side of this polygon is tightly sealed to the packaging tray while the lidding film in the remaining sealing region is peelably sealed to the packaging tray.
  • preferably 5-25% of the sealing area may be provided with a solid seal.
  • the packaging tray or the cover sheet has at least one recess, which is preferably located on the horizontal plane above the packaged goods.
  • the recess may have any shape and size, but must be compatible with the shape of the knob.
  • the recess is approximately circular with a diameter of 3 to 12 mm, preferably 4 to 9 mm.
  • the recess is preferably drilled or punched into the packaging tray or lid film, punching being particularly preferred.
  • the lidding foil or the packaging trough has at least one nub, which is arranged complementary to the recess in the packaging trough or the cover foil and whose shape with the shape of the recess must be compatible so that it can be inserted through the recess and remains there.
  • the knob has approximately the shape of a cylinder whose diameter is preferably from 3 to 12 mm and whose length is preferably from 3 to 15 mm, particularly preferably 4 to 8 mm. Most preferably, the diameter of the nub ⁇ the diameter of the approximately circular recess.
  • the nub (s) or the recess (s) is / are arranged closer to the outer edge of the plastic packaging than the sealing area.
  • the nub (s) or recess (s) are attached to the plastic package so that they are outside the area of the solid seal, preferably diametrically opposite.
  • This arrangement has the advantage that the cover sheet can be stretched and then firmly but releasably connected to the / the knob fasteners.
  • the lidding film has the recess (s) and the packaging tray has the nub (s).
  • the plastic packaging according to the invention may preferably have additional means for reclosing the packaging.
  • Such means are preferably a zipper, such as in the EP 0 621 197 A1 discloses a sealing lip, a snap closure, as in the EP 0 427 512 disclosed or a Velcro closure as disclosed in the co-pending application with the internal application number CH 8006.
  • food preferably solid, particularly preferably fresh or cooked meat or sausage products, packed.
  • the plastic packaging according to the invention is prepared by the method according to claim 9.
  • the preparation of the knob is preferably carried out with a stamp or with compressed air, with the / the material to be deformed is pressed through the recess.
  • FIG. 1 shows a plastic packaging 1 according to the invention, which consists of a packaging tray 2 and a cover film 3.
  • the packaging has a sealing area 4, which is arranged horizontally and extends around the entire packaging cavity 2 around.
  • the lidding film 3 is sealed to the packaging tray 2, wherein the lidding film in the weakly dotted portion of the sealing area 4 is peelably sealed to the packaging tray, while being firmly sealed in the heavily dotted portion of the sealing area 4 to the packaging tray.
  • the lidding foil is pulled off the packaging tray only on three sides and remains connected to it in the section of the solid seal.
  • the lidding film a semi-rigid polyethylene terephthalate / EVOH / polyethylene-polybutylene film, has two approximately cylindrical knobs that are 4 mm in length and 7 mm in diameter.
  • the nubs 5 have been embossed by thermoforming with a stamp in the lidding film.
  • the packaging tray 2 has two approximately circular recesses 6, which are arranged opposite the knobs 5 and have a diameter of 7 mm.
  • nubs 5 and recesses 6 can also be arranged at other locations of the plastic packaging and / or in addition to the illustrated two even more nubs / recesses may be present.
  • the packaging is closed again by the nubs 5 are pressed into the recesses 6 and remain there until the cover sheet pulled off again and the knobs are pulled out of the recesses.
  • FIG. 2 shows the plastic packaging 1 according to FIG. 1, the nubs 5 in the packaging tray 4 and the recess 6 in the cover film 3, in each case outside the sealing area.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)

Abstract

The invention relates to a resealable plastic packaging container (1) consisting of a tray (2) and a foil lid (3) which in the sealing area is sealed to the tray such that it can be at least partly peeled back. The foil lid or tray comprises at least one knob and the tray or foil lid complementary thereto comprises hat least one opening (6) through which the knob (5) is passed when the plastic packaging container is resealed after opening.

Description

Die vorliegende Erfindung betrifft eine wiederverschließbare Kunststoffverpackung, die aus einer Verpackungsmulde und einer Deckelfolie besteht, wobei die Deckelfolie teilweise peelbar an die Verpackungsmulde gesiegelt ist.The present invention relates to a resealable plastic package consisting of a packaging tray and a cover sheet, the cover sheet being partially peelably sealed to the packaging tray.

Verpackungsgüter, insbesondere Lebensmittel werden heutzutage immer öfter in Kunststoffverpackungen zum Verkauf angeboten. Diese Kunststoffverpackungen weisen eine Verpackungsmulde, in der sich das Verpackungsgut befindet und einen Deckelfolie auf. Die Deckelfolie ist an die Verpackungsmulde gesiegelt. Da das Verpackungsgut nach dem Öffnen oftmals nicht sofort verbraucht wird, ist es von Vorteil, wenn die Verpackung nach dem Öffnen wiederverschließbar ist.Packaging goods, especially food, are increasingly being offered for sale in plastic packaging today. These plastic packages have a packaging tray, in which the packaged goods is located and a lid film. The lidding foil is sealed to the packaging tray. Since the packaged goods are often not consumed immediately after opening, it is advantageous if the pack can be resealed after opening.

Es hat deshalb in der Vergangenheit nicht an Versuchen gefehlt, wiederverschließbare Verpackungen zur Verfügung zu stellen. Beispielhaft seien hier nur die EP 0 564 695 (die eine Verpackung gemäss dem Oberbegriff des Anspruchs 1 und ein Verfahren zur Herstellung derselben offenbart), DE 39 25 746 , EP 0 386 490 , DE 39 41 183 , EP 0 408 516 , WO 97/05023 , EP 0 716 986 , EP 0 595 368 , EP 0 579 262 , EP 0 506 295 , EP 0 427 513 , EP 0 427 512 , EP 0 385 565 , EP 0 381 329 oder EP0 379 927 genannt, in denen entweder Verfahren und Vorrichtungen zur Herstellung einer wiederverschließbaren Verpackung und/oder die wiederverschließbare Verpackung selbst gelehrt werden. Alle die, in den oben genannten Veröffentlichungen offenbarten, wiederverschließbaren Verpackungen haben entweder den Nachteil, daß sie aufwendig herzustellen und/oder nur schlecht wiederverschließbar sind.There has therefore been no lack of attempts in the past to provide resealable packaging. As an example, only the EP 0 564 695 (which discloses a package according to the preamble of claim 1 and a method of manufacturing the same), DE 39 25 746 . EP 0 386 490 . DE 39 41 183 . EP 0 408 516 . WO 97/05023 . EP 0 716 986 . EP 0 595 368 . EP 0 579 262 . EP 0 506 295 . EP 0 427 513 . EP 0 427 512 . EP 0 385 565 . EP 0 381 329 or EP0 379 927 in which either methods and apparatus for producing a resealable package and / or the resealable package itself are taught. All the resealable packages disclosed in the above publications either have the disadvantage of being expensive to produce and / or poorly resealable.

Es stellt sich deshalb die Aufgabe eine wiederverschließbare Kunststoffverpackung zur Verfügung zu stellen, die die Nachteile des Standes der Technik nicht aufweist.It is therefore the object to provide a resealable plastic packaging that does not have the disadvantages of the prior art.

Die Aufgabe wird erfindungsgemäß durch die Bereitstellung einer wiederverschließbaren Kunststoffverpackung aus einer Verpackungsmulde und einer Deckelfolie gemäss Anspruch 1 gelöst.The object is achieved by providing a resealable plastic packaging from a packaging tray and a lid film according to claim 1.

Eine Verpackungsmulde im Sinne der Erfindung ist jede dem Fachmann geläufige Verpackungsmulde, die aus einer, vorzugsweise für die Verpackung von Lebensmitteln üblichen, thermoplastischen und formstabilen Ein- oder Mehrschichtfolie hergestellt wurde.For the purposes of the invention, a packaging tray is any packaging tray known to the person skilled in the art, which has been produced from a thermoplastic and dimensionally stable single-layer or multi-layer film which is preferably customary for the packaging of foods.

Die Folie muß an mindestens einer ihrer beiden Oberflächen eine Siegelschicht aufweisen, die peelfähig ist. Als Siegelschicht wird vorzugsweise eine Mischung aus LDPE (Low Density Polyethylen) und einem Polybutylen verwendet. Die Mischung enthält vorzugsweise 15 bis 30 Gew.%, besonders bevorzugt 20 bis 28 Gew.% Polybutylen. Vorzugsweise weist das Polybutylen einen Schmelzindex (MFI) im Bereich von 0,3 bis 2,0 g/10 min (190°C und 216 kg gemäß ASTM 1238) auf.The film must have on at least one of its two surfaces a sealing layer which is peelable. The sealing layer used is preferably a mixture of LDPE (low density polyethylene) and a polybutylene. The mixture preferably contains 15 to 30% by weight, particularly preferably 20 to 28% by weight, of polybutylene. Preferably, the polybutylene has a melt index (MFI) in the range of 0.3 to 2.0 g / 10 min (190 ° C and 216 kg according to ASTM 1238).

Besonders bevorzugt wird die Verpackungsmulde aus einer mehrschichtigen Folie mit einer geschäumten Trägerfolie, vorzugsweise einer geschäumten Polyolefonfolie, besonders bevorzugt Polypropylenfolie, hergestellt.Particularly preferably, the packaging tray is produced from a multilayer film with a foamed carrier film, preferably a foamed polyolefin film, particularly preferably polypropylene film.

Ganz besonders bevorzugt wird die Verpackungsmulde aus einer Folie hergestellt, wie sie in der Patentanmeldung mit dem Aktenzeichen des Deutschen Patentamtes 198 40 046.2 offenbart ist.Most preferably, the packaging tray is made of a film, as disclosed in the patent application with the file number of the German Patent Office 198 40 046.2.

Die thermogeformten, vorzugsweise tiefgezogenen Verpackungsmulden werden nach dem Befüllen mit dem Verpackungsgut mit einer dem Fachmann geläufigen, tiefziehbaren Deckelfolien verschlossen. Als Deckelfolien eignen sich insbesondere Mehrschichtfilme mit einer Gassperrschicht aus Ethylenvinylalkoholcopolymer, vorzugsweise aus Polyethylenterephtalat(PET)/Haftvermlttlerschicht/Polyethylen/Haftver-mittlerschicht/Ethylen-Vinylalkoholcopolymer/Haftvermittlerschicht/Polyethylen, wobei die Polyethylenterephtalatschicht durch Polypropylen ersetzt sein kann.The thermoformed, preferably thermoformed packaging trays are closed after filling with the packaged with a known to those skilled, thermoformable lidding films. As cover films are particularly suitable multilayer films with a gas barrier layer of ethylene vinyl alcohol copolymer, preferably from polyethylene terephthalate (PET) / Haftvermlttlerschicht / polyethylene / adhesive / middle layer / ethylene-vinyl alcohol copolymer / adhesive layer / polyethylene, wherein the polyethylene terephthalate layer may be replaced by polypropylene.

Sofern die Deckelfolie der erfindungsgemäßen Verpackung die Aussparung aufweist, kann sie auch als Gassperrschicht SiOx aufweisen. Vorzugsweise ist dann die Deckelfolie aus PET/SiOx/Haftvermittler/Polyethylen aufgebaut.If the cover film of the packaging according to the invention has the recess, it may also have SiO x as a gas barrier layer. Preferably, then the cover sheet of PET / SiO x / adhesion promoter / polyethylene is constructed.

Die Deckelfolie wird erfindungsgemäß an die Verpackungsmulde im Siegelbereich gesiegelt, wobei die Deckelfolie mindestens teilweise peelbar an die Verpackungsmulde gesiegelt wird. Für die peelfähige Siegelung wird die Deckelfolie bei einer Temperatur von 130°C bis 150°C, vorzugsweise von 135 bis 145°C, und einem Druck von 3 bis 8 • 105 N/m2, vorzugsweise von 4,0 bis 5,0 • 105 N/m2 an die Verpackungsmulde gesiegelt. Sofern die erfindungsgemäßen Verpackungen einen nicht peelbare, d. h. fest gesiegelten Teilbereich des Siegelbereiches aufweisen sollen, so wird die feste Siegelung vorzugsweise bei einer mindestens 10°C höheren Temperatur und vorzugsweise dem zweifachen Druck durchgeführt als die peelbare Siegelung. Eine feste Siegelung im Sinne der Erfindung ist eine Siegelung, bei der die Ablösekraft der Deckelfolie um mindestens das Fünffache höher sein muß als im Bereich der peelbaren Siegelung.The lid film is sealed according to the invention to the packaging tray in the sealing area, wherein the lidding film is at least partially peelable sealed to the packaging tray. For peelable sealing, the lidding film is heated at a temperature of from 130 ° C to 150 ° C, preferably from 135 to 145 ° C, and a pressure of from 3 to 8 • 10 5 N / m 2 , preferably from 4.0 to 5, 0 • 10 5 N / m 2 sealed to the packaging tray. If the packages according to the invention are to have a non-peelable, ie tightly sealed, portion of the sealing area, then the solid seal is preferably carried out at a temperature at least 10 ° C. and preferably twice the pressure than the peelable seal. A solid seal in the sense of the invention is a seal in which the detachment force of the cover film must be at least five times higher than in the area of the peelable seal.

Der Siegelbereich an der Verpackungsmulde befindet sich vorzugsweise auf einer waagerechten Ebene oberhalb des Verpackungsgutes und erstreckt sich vorzugsweise auf dieser Ebene um das gesamte Verpackungsgut herum. Bei einer vieleckigen Kunststoffverpackung kann die Deckelfolie an vorzugsweise mindestens einer Seite dieses Vielecks mit der Verpackungsmulde fest gesiegelt, während die Deckelfolie in dem verbleibenden Siegelbereich peelfähig mit der Verpackungsmulde gesiegelt ist. Bei einer runden Verpackung kann vorzugsweise 5-25% des Siegelbereiches mit einer festen Siegelung versehen sein.The sealing area on the packaging tray is preferably located on a horizontal plane above the packaged goods and preferably extends around the entire packaged goods on this level. In a polygonal plastic packaging, the lidding film may preferably at least one side of this polygon is tightly sealed to the packaging tray while the lidding film in the remaining sealing region is peelably sealed to the packaging tray. For a round package, preferably 5-25% of the sealing area may be provided with a solid seal.

Erfindungsgemäß weist die Verpackungsmulde oder die Deckelfolie mindestens eine Aussparung auf, die sich vorzugsweise auf der waagerechten Ebene oberhalb des Verpackungsgutes befindet. Die Aussparung kann eine beliebige Form und Größe haben, die jedoch mit der Form der Noppe kompatibel sein muß. Vorzugsweise ist die Aussparung näherungsweise kreisförmig mit einem Durchmesser von 3 bis 12 mm, vorzugsweise von 4 bis 9 mm. Die Aussparung wird vorzugsweise in die Verpackungsmulde oder die Deckelfolie gebohrt oder gestanzt, wobei Stanzen besonders bevorzugt ist.According to the invention, the packaging tray or the cover sheet has at least one recess, which is preferably located on the horizontal plane above the packaged goods. The recess may have any shape and size, but must be compatible with the shape of the knob. Preferably, the recess is approximately circular with a diameter of 3 to 12 mm, preferably 4 to 9 mm. The recess is preferably drilled or punched into the packaging tray or lid film, punching being particularly preferred.

Ebenfalls erfindungsgemäß weist die Deckelfolie oder die Verpackungsmulde mindestens eine Noppe auf, die zur Aussparung in der Verpackungsmulde oder die Deckelfolie komplementär angeordnet ist und deren Form mit der Form der Aussparung so kompatibel sein muß, daß sie durch die Aussparung gesteckt werden kann und dort verbleibt. Vorzugsweise hat die Noppe näherungsweise die Form eines Zylinders, dessen Durchmesser vorzugsweise von 3 bis 12 mm und dessen Länge vorzugsweise von 3 bis 15 mm, besonders bevorzugt 4 bis 8 mm, beträgt. Ganz besonders bevorzugt ist der Durchmesser der Noppe ≥ dem Durchmesser der näherungsweise kreisförmigen Aussparung.Also according to the invention, the lidding foil or the packaging trough has at least one nub, which is arranged complementary to the recess in the packaging trough or the cover foil and whose shape with the shape of the recess must be compatible so that it can be inserted through the recess and remains there. Preferably, the knob has approximately the shape of a cylinder whose diameter is preferably from 3 to 12 mm and whose length is preferably from 3 to 15 mm, particularly preferably 4 to 8 mm. Most preferably, the diameter of the nub ≥ the diameter of the approximately circular recess.

Vorzugsweise wird/werden die Noppe(n) bzw. die Aussparung(en) näher am Außenrand der Kunststoffverpackung angeordnet als der Siegelbereich.Preferably, the nub (s) or the recess (s) is / are arranged closer to the outer edge of the plastic packaging than the sealing area.

Da ein fester Siegelbereich vorhanden ist, werden die Noppe(n) bzw. die Aussparung(en) so an der Kunststoffverpackung angebracht, daß sie außerhalb des Bereichs der festen Siegelung, bevorzugt diametral gegenüber liegen. Diese Anordnung hat den Vorteil, daß die Deckelfolie gespannt und dann mit dem/den Noppenverschlüssen fest jedoch wieder lösbar verbunden werden kann.Since there is a fixed seal area, the nub (s) or recess (s) are attached to the plastic package so that they are outside the area of the solid seal, preferably diametrically opposite. This arrangement has the advantage that the cover sheet can be stretched and then firmly but releasably connected to the / the knob fasteners.

In einer bevorzugten Verpackungsform weist die Deckelfolie die Aussparung(en) und die Verpackungsmulde die Noppe(n) auf.In a preferred packaging form, the lidding film has the recess (s) and the packaging tray has the nub (s).

Vorzugsweise kann die erfindungsgemäße Kunststoffverpackung zusätzliche Mittel zur Wiederverschließung der Verpackung aufweisen. Solche Mittel sind vorzugsweise ein Reißverschluß, wie z.B. in der EP 0 621 197 A1 offenbart, eine Dichtlippe, ein Schnappverschluß, wie in der EP 0 427 512 offenbart oder ein Klettverschluß wie in der Parallelanmeldung mit dem internen Aktenzeichen CH 8006 offenbart ist.The plastic packaging according to the invention may preferably have additional means for reclosing the packaging. Such means are preferably a zipper, such as in the EP 0 621 197 A1 discloses a sealing lip, a snap closure, as in the EP 0 427 512 disclosed or a Velcro closure as disclosed in the co-pending application with the internal application number CH 8006.

Vorzugsweise werden in der erfindungsgemäßen Verpackung Lebensmittel, vorzugsweise feste, besonders bevorzugt frische oder gekochte Fleisch- oder Wurstwaren, verpackt.Preferably, in the packaging according to the invention food, preferably solid, particularly preferably fresh or cooked meat or sausage products, packed.

Die erfindungsgemäße Kunststoffverpackung wird nach dem Verfahren gemäss Anpruch 9 hergestellt. Die Herstellung der Noppe erfolgt vorzugsweise mit einem Stempel oder mit Druckluft, mit dem/der das zu verformende Material durch die Aussparung gedrückt wird.The plastic packaging according to the invention is prepared by the method according to claim 9. The preparation of the knob is preferably carried out with a stamp or with compressed air, with the / the material to be deformed is pressed through the recess.

Im Folgenden wird die Erfindung anhand Figur 1 erläutert. Die Erläuterungen sind lediglich beispielhaft und schränken den allgemeinen Erfindungsgedanken nicht ein.

  • Figur 1 zeigt eine erfindungsgemäße Kunststoffverpackung mit einem festen Teilsiegelbereich, bei der die Noppen in der Deckelfolie und die Aussparungen in der Verpackungsmulde sind.
  • Figur 2 zeigt eine Kunststoffverpackung gemäß Figur 1 mit außerhalb des Siegelbereiches liegenden Noppen bzw. Aussparungen, wobei die Noppen an der Verpackungsmulde und die Aussparungen in der Deckelfolie vorliegen.
In the following the invention will be explained with reference to FIG. The explanations are merely exemplary and do not limit the general inventive concept.
  • FIG. 1 shows a plastic packaging according to the invention with a fixed part-sealing region in which the nubs in the cover film and the recesses in the packaging trough are.
  • FIG. 2 shows a plastic packaging according to FIG. 1 with nubs or recesses outside the sealing area, the nubs being present on the packaging recess and the recesses in the cover film.

Figur 1 zeigt eine erfindungsgemäße Kunststoffverpackung 1, die aus einer Verpackungsmulde 2 und einer Deckelfolie 3 besteht. Die Verpackung weist einen Siegelbereich 4 auf, der waagerecht angeordnet ist und sich um die gesamte Verpackungsmulde 2 herum erstreckt. In diesem Siegelbereich 4 ist die Deckelfolie 3 an die Verpackungsmulde 2 gesiegelt, wobei die Deckelfolie in dem schwach gepunkteten Abschnitt des Siegelbereiches 4 peelbar an die Verpackungsmulde gesiegelt ist, während sie in dem stark gepunkteten Abschnitt des Siegelbereiches 4 fest an die Verpackungsmulde gesiegelt ist. Bei Öffnen wird die Deckelfolie nur an drei Seiten von der Verpackungsmulde abgezogen und bleibt im Abschnitt der festen Siegelung mit dieser verbunden. Die Deckelfolie, eine halbsteife Polyethylenterephtalat/EVOH/Polyethylen-Polybutylen-Folie, weist zwei näherungsweise zylinderförmige Noppen auf, die eine Länge von 4 mm und einen Durchmesser von 7 mm haben. Die Noppen 5 sind durch Thermoverformung mit einem Stempel in die Deckelfolie geprägt worden. Die Verpackungsmulde 2 weist zwei näherungsweise kreisförmige Aussparungen 6 auf, die den Noppen 5 gegenüberliegend angeordnet sind und einen Durchmesser von 7 mm haben. FIG. 1 shows a plastic packaging 1 according to the invention, which consists of a packaging tray 2 and a cover film 3. The packaging has a sealing area 4, which is arranged horizontally and extends around the entire packaging cavity 2 around. In this sealing area 4, the lidding film 3 is sealed to the packaging tray 2, wherein the lidding film in the weakly dotted portion of the sealing area 4 is peelably sealed to the packaging tray, while being firmly sealed in the heavily dotted portion of the sealing area 4 to the packaging tray. When opened, the lidding foil is pulled off the packaging tray only on three sides and remains connected to it in the section of the solid seal. The lidding film, a semi-rigid polyethylene terephthalate / EVOH / polyethylene-polybutylene film, has two approximately cylindrical knobs that are 4 mm in length and 7 mm in diameter. The nubs 5 have been embossed by thermoforming with a stamp in the lidding film. The packaging tray 2 has two approximately circular recesses 6, which are arranged opposite the knobs 5 and have a diameter of 7 mm.

Der Fachmann erkennt, daß die Noppen 5 bzw. Aussparungen 6 auch an anderen Stellen der Kunststoffverpackung angeordnet und/oder neben den dargestellten zwei noch weitere Noppen/Aussparungen vorhanden sein können.The skilled artisan will appreciate that the nubs 5 and recesses 6 can also be arranged at other locations of the plastic packaging and / or in addition to the illustrated two even more nubs / recesses may be present.

Der Fachmann erkennt ferner, daß neben den Noppen noch weitere Wiederverschließungsmittel an der Verpackungsmulde bzw. der Deckelfolie angeordnet sein können.The skilled artisan will further recognize that in addition to the knobs still further reclosure the packaging trough or the cover foil can be arranged.

Nach dem Öffnen der Deckelfolie wird die Verpackung wieder verschlossen, indem die Noppen 5 in die Aussparungen 6 gedrückt werden und dort verbleiben, bis die Deckelfolie wieder abgezogen und die Noppen damit aus den Aussparungen gezogen werden.After opening the cover film, the packaging is closed again by the nubs 5 are pressed into the recesses 6 and remain there until the cover sheet pulled off again and the knobs are pulled out of the recesses.

In Figur 2 ist die Kunststoffverpackung 1 gemäß Figur 1 dargestellt, die Noppen 5 in der Verpackungsmulde 4 und die Aussparung 6 in der Deckelfolie 3, jeweils außerhalb des Siegelbereiches sich befinden.FIG. 2 shows the plastic packaging 1 according to FIG. 1, the nubs 5 in the packaging tray 4 and the recess 6 in the cover film 3, in each case outside the sealing area.

Claims (6)

  1. Re-sealable plastic packaging (1) comprising a packaging cavity (2) and a cover film (3), wherein the cover film (3) is sealed in the sealing region (4) to the packaging cavity so as to be partially peelable, wherein the cover film (3) or the packaging cavity (2) has at least one knob (5) as the closure element and the packaging cavity (2) or the cover film (3) has at least one recess (6), as a complement to the knob, through which the knob(s) is or are pushed upon re-sealing of the plastic packaging after opening, characterised in that the cover film is partially permanently sealed to the packaging cavity and the knob(s) (5) and corresponding recess(es) (6) is or are situated outside the permanent sealing region.
  2. Re-sealable plastic packaging (1) according to claim 1, characterised in that the knob(s) (5) and the recess(es) (6) is/are disposed closer to the edge (7) of the plastic packaging (1) than the sealing region (4).
  3. Re-sealable plastic packaging (1) according to claim 1 or 2, characterised in that the shape of the knob(s) (5) is approximately cylindrical and the recess(es) (6) is or are approximately circular.
  4. Re-sealable plastic packaging (1) according to one of claims 1 to 3, characterised in that the diameter of the knob (5) ≥ the diameter of the recess (6).
  5. Re-sealable plastic packaging (1) according to one of claims 1 to 3, characterised in that the cover film (3) consists of a thermoformable film made of polyethylene terephthalate or polypropylene, where appropriate with an ethylene vinyl alcohol copolymer barrier layer and polyethylene, and the packaging cavity (2) is made of a foamed polyolefin film, preferably a foamed polypropylene film, as the base layer with, where appropriate, a gas barrier layer and a peelable sealing layer.
  6. Re-sealable plastic packaging (1) according to one of claims 1 to 5, characterised in that one side and/or 5-25% of the sealing region is permanently sealed.
EP99963441A 1998-12-21 1999-12-09 Resealable plastic packaging with at least one knob Expired - Lifetime EP1140653B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19859042 1998-12-21
DE19859042A DE19859042A1 (en) 1998-12-21 1998-12-21 Resealable plastic packaging with at least one knob
PCT/EP1999/009675 WO2000037335A1 (en) 1998-12-21 1999-12-09 Resealable plastic packaging container with at least one knob

Publications (3)

Publication Number Publication Date
EP1140653A1 EP1140653A1 (en) 2001-10-10
EP1140653B1 EP1140653B1 (en) 2003-08-06
EP1140653B2 true EP1140653B2 (en) 2007-12-19

Family

ID=7891976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99963441A Expired - Lifetime EP1140653B2 (en) 1998-12-21 1999-12-09 Resealable plastic packaging with at least one knob

Country Status (11)

Country Link
EP (1) EP1140653B2 (en)
AT (1) ATE246645T1 (en)
AU (1) AU1974000A (en)
CA (1) CA2356663A1 (en)
CZ (1) CZ20012229A3 (en)
DE (2) DE19859042A1 (en)
DK (1) DK1140653T3 (en)
ES (1) ES2172493T3 (en)
NO (1) NO322029B1 (en)
PL (1) PL349429A1 (en)
WO (1) WO2000037335A1 (en)

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DE10120366A1 (en) 2001-04-25 2002-10-31 Convenience Food Sys Wallau Plastic packaging with at least one sealed knob
EP1714907A1 (en) * 2005-04-20 2006-10-25 Cryovac, Inc. Reclosable food package
BRPI0603692A (en) * 2005-09-13 2007-08-14 Kraft Foods Holdings Inc packaging for wrapping an individual slice-shaped portion of food product and method of forming the packaging
RU202835U1 (en) * 2020-08-13 2021-03-10 Общество с ограниченной ответственностью "ПАКГРАД" FOOD TRAY

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Also Published As

Publication number Publication date
ES2172493T1 (en) 2002-10-01
WO2000037335A1 (en) 2000-06-29
AU1974000A (en) 2000-07-12
EP1140653A1 (en) 2001-10-10
PL349429A1 (en) 2002-07-29
NO20012810D0 (en) 2001-06-07
EP1140653B1 (en) 2003-08-06
NO322029B1 (en) 2006-08-07
CZ20012229A3 (en) 2002-07-17
ES2172493T3 (en) 2004-05-16
DE19859042A1 (en) 2000-06-29
NO20012810L (en) 2001-06-07
DE59906541D1 (en) 2003-09-11
ATE246645T1 (en) 2003-08-15
CA2356663A1 (en) 2000-06-29
DK1140653T3 (en) 2003-12-01

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