EP1559658A2 - Double-layered, lid-shaped stamped closing element. - Google Patents

Double-layered, lid-shaped stamped closing element. Download PDF

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Publication number
EP1559658A2
EP1559658A2 EP05450003A EP05450003A EP1559658A2 EP 1559658 A2 EP1559658 A2 EP 1559658A2 EP 05450003 A EP05450003 A EP 05450003A EP 05450003 A EP05450003 A EP 05450003A EP 1559658 A2 EP1559658 A2 EP 1559658A2
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EP
European Patent Office
Prior art keywords
layer
lid
layers
adhesive
element according
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
EP05450003A
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German (de)
French (fr)
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EP1559658B1 (en
EP1559658A3 (en
Inventor
Andreas Niederer
Lambert Nekula
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Constantia Teich GmbH
Original Assignee
Teich AG
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Filing date
Publication date
Application filed by Teich AG filed Critical Teich AG
Priority to PL05450003T priority Critical patent/PL1559658T3/en
Priority to SI200531292T priority patent/SI1559658T1/en
Publication of EP1559658A2 publication Critical patent/EP1559658A2/en
Publication of EP1559658A3 publication Critical patent/EP1559658A3/en
Application granted granted Critical
Publication of EP1559658B1 publication Critical patent/EP1559658B1/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
    • B65D77/2028—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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2091—Lines of weakness or apertures in 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
    • 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

Definitions

  • the present invention relates to a lid-shaped punched out Element for closing containers consisting of two layers with at least one opening aid integrated within these layers, wherein the layer arranged in the direction of the container one with perforations or having predetermined breaking points provided plastic layer.
  • the invention further relates to a process for the preparation of this two-layer closure element.
  • microwave containers with two-ply Closing closure elements wherein the outer layer a Paper or metal layer and the second facing the container Location is a plastic layer.
  • the materials of the outer layer To oppose the passage of the microwaves, this must be before the Heating the container to be removed.
  • the now with the plastic film sealed container must then be perforated by hand be to prevent the escape of water vapor during warming up or cooking the contents.
  • a two-layer closure element for microwave containers described which a Metal layer and further arranged in the direction of the container edge having heat-reactivatable plastic layer.
  • This warm reactivatable Plastic layer may also have perforations, allowing the formation of an overpressure in the container during warming up or cooking the contents is prevented by microwaves.
  • the invention aims to remedy this situation.
  • a two-layer closure element of the above suggested type which is characterized that the layers of the closure element by means of a peelable Adhesive layer are glued, and that the opening aid as well as the the plastic layer having layer in the perforations or predetermined breaking points are adhesive-free.
  • the invention further relates to a process for the preparation of closure element according to the invention, wherein in a first Process step, the layers of the closure element in the form of a Produces pre-composite and at the plastic layer having Location attaches perforations or predetermined breaking points that one subsequently by cold laminating the layers of the closure element glued together, but the area of the perforations or predetermined breaking points on the layer having the plastic layer and the area of the opening aid remain adhesive-free.
  • FIG. 1 a possible embodiment of the inventive two-ply Closure element
  • Fig. 2 shows a possible procedure for the Production of the closure element according to the invention
  • FIG. 3 a container, which with a closure element according to the invention is closed, show.
  • the individual layers 2 and 3 are produced in the form of a pre-bond.
  • the Plastics can be selected from the group polypropylene, polyethylene, Polyester, polyacrylate, polyamide or polystyrene can be selected.
  • This metal or plastic film 7 can now at her the Observer facing surface side equipped with a printed image become.
  • This may be in its surface design be both smooth and rough.
  • the surface roughness results by irregular, but also regular arrangement of the print motifs the desired print image. It also facilitates the surface roughness the unstacking of the usually in magazines on top of each other preserved closure elements.
  • the film is 7th excluding provided with a heat-sealable layer 8.
  • a heat-sealable layer 8 can be used as a heat sealing varnish, coextrusion coating or peelable Plastic film present.
  • the container facing Layer 3 made.
  • a plastic film 5 for example a polypropylene film with a thickness of 10 to 100 mm, with a heat sealable layer 9, laminated.
  • This coating can as well as heat sealing lacquer, coextrusion coating or peelable Plastic film present, with its sealed seam strength, conditional by selection, chemical constitution as well as degree of crosslinking of the Components must be higher than that of the layer 8.
  • the seal seam strength generated by the layer 9 the airtight
  • the seal seam strength generated by the layer 8 is the Connection of the layers 2 and 3 cause, but at the same time the "Peeling process" i. allow the detachment of the layers from each other should.
  • Closure element are now in a cold laminating process, as shown in Fig. 2, glued together. It is in a Storage container 12 of the adhesive 4, for example a polyurethane adhesive, drawn from the container by means of an applicator roll 13, at the same time with the help of the calibration roller 14, the order volume can be controlled. Likewise, instead of polyurethane a dispersion containing Acrylklareestercopolymere used become. This dispersion, available under the name Flexbond® is plasticizer-free and therefore particularly good for packaging suitable for food. It is now the Vorverbund in the form the layer containing the plastic layer 3 from a supply roll 15 withdrawn and a pulley 16 to the surface of the Application roller 13 introduced. Due to the given surface structure the applicator roll 13 and a controlled approach of the preliminary composite 3 with the aid of control elements, a precise application of adhesive takes place so that the perforations or Predetermined breaking points 6 in the plastic layer having layer. 3 remain adhesive-free.
  • the adhesive 4 for example a polyurethane
  • the closure elements 1 according to the invention are stored in stacks after punching and can be supplied for further use, namely the closing of food containers.
  • microwave container 19 which are already filled with food, continuously covered with the closure element according to the invention and hermetically sealed by means of sealing tools.
  • Fig. 3 which, for example, a metal layer containing layer 2 is touched on the handle bottle 20 and withdrawn in the direction of the arrow with the Anr regardingkraft F 1 of the layer 3 having the plastic layer.
  • the predetermined breaking points or perforations 6 on the plastic layer are now exposed, whereas the adhesive, as shown in FIG.
  • the layer 3 having the plastic layer can also be pulled off from the container 19 by pulling on the grip tab 20 'in the direction of the arrow F 2 , so that the removal of the packaged goods is made possible.
  • Closure element 1 not only easier closure of food containers, such as microwave containers is because a mutual shifting or slipping of the Individual layers is prevented by the adhesive layer, but that also by the peelability of the adhesive any kind of Penetration of glue into the food container, so into the Food is avoided in any case.

Abstract

The punched lid (1) for closure of containers (19) comprises layers (2, 3) joined by peelable glue strips (4), with the opening tab (20) and the perforated or otherwise weakened break line zones of the layer (3) left free from the glue. An independent claim is also included for producing the proposed lid.

Description

Die vorliegende Erfindung betrifft ein deckelförmig ausgestanztes Element zum Verschließen von Behältern bestehend aus zwei Lagen mit zumindest einer innerhalb dieser Lagen integrierten Öffnungshilfe, wobei die in Richtung des Behälters angeordnete Lage eine mit Perforationen oder Sollbruchstellen versehene Kunststoffschicht aufweist. Die Erfindung betrifft weiters ein Verfahren zur Herstellung dieses zweilagigen Verschlusselementes.The present invention relates to a lid-shaped punched out Element for closing containers consisting of two layers with at least one opening aid integrated within these layers, wherein the layer arranged in the direction of the container one with perforations or having predetermined breaking points provided plastic layer. The invention further relates to a process for the preparation of this two-layer closure element.

Es ist bekannt, beispielsweise Mikrowellenbehälter mit zweilagigen Verschlusselementen zu verschließen, wobei die äußere Lage eine Papier- oder Metallschicht und die zweite dem Behälter zugewandte Lage eine Kunststoffschicht ist. Da sich die Materialien der Außenlage dem Durchgang der Mikrowellen widersetzen, muss diese vor dem Erwärmen des Behälters abgenommen werden. Der nunmehr mit der Kunststofffolie verschlossene Behälter muss anschließend per Hand perforiert werden, um das Austreten von Wasserdampf während des Aufwärmens oder Kochens des Inhalts zu ermöglichen.It is known, for example, microwave containers with two-ply Closing closure elements, wherein the outer layer a Paper or metal layer and the second facing the container Location is a plastic layer. As the materials of the outer layer To oppose the passage of the microwaves, this must be before the Heating the container to be removed. The now with the plastic film sealed container must then be perforated by hand be to prevent the escape of water vapor during warming up or cooking the contents.

Gemäß europäischem Patent Nr. 457 629 wird ein zweilagiges Verschlusselement für Mikrowellenbehälter beschrieben, welches eine Metallschicht und weiters eine in Richtung des Behälterrandes angeordnete warmreaktivierbare Kunststoffschicht aufweist. Beim Verschließen des Behälters durch Heißsiegeln erfolgt im Bereich der Siegelnaht eine Vernetzungsreaktion innerhalb der warmreaktivierbaren Kunststoffschicht, sodass durch Ausbilden der Siegelnaht ein luftdichter Verschluss des Behälters ermöglicht ist. Diese warmreaktivierbare Kunststoffschicht kann weiters Perforationen aufweisen, sodass die Bildung eines Überdrucks im Behälter während des Aufwärmens oder Kochens des Inhalts durch Mikrowellen verhindert wird.According to European Patent No. 457 629, a two-layer closure element for microwave containers described which a Metal layer and further arranged in the direction of the container edge having heat-reactivatable plastic layer. When closing the container is made by heat sealing in the area of Seal a crosslinking reaction within the warm-reactivatable Plastic layer, so by forming the sealed seam airtight closure of the container is possible. This warm reactivatable Plastic layer may also have perforations, allowing the formation of an overpressure in the container during warming up or cooking the contents is prevented by microwaves.

Die gemäß europäischem Patent Nr. 457 629 beschriebenen zweilagigen Verschlusselemente werden durch Coextrusion der warmreaktivierbaren Kunststoffschicht an eine metallische Schicht als Außenlage in Form von Rollenware hergestellt. Diese Rollenware wird für den Abpackprozess, welcher kontinuierlich erfolgt, verwendet. Das Ausstanzen in Form einzelner Verschlusselemente ist jedoch nicht möglich, da der durch Coextrusion hergestellte Verbund in loser Anordnung vorliegt, sodass beim Hantieren ein Verrutschen der Lagen erfolgt.The two-ply described in European Patent No. 457,629 Closure elements are made by co-extrusion of the warm-reactivatable Plastic layer to a metallic layer as an outer layer in shape made of roll goods. This roll product is used for the packaging process, which is continuous, used. The punching in the form of individual closure elements is not possible because the composite produced by coextrusion is in a loose arrangement, so that when handling a shift of the layers takes place.

Hier will die Erfindung Abhilfe schaffen.The invention aims to remedy this situation.

Erfindungsgemäß wird ein zweilagiges Verschlusselement der eingangs genannten Art vorgeschlagen, welches dadurch gekennzeichnet ist, dass die Lagen des Verschlusselementes mittels einer peelfähigen Kleberschicht verklebt sind, und dass die Öffnungshilfe sowie die die Kunststoffschicht aufweisende Lage im Bereich der Perforationen oder Sollbruchstellen kleberfrei sind.According to the invention, a two-layer closure element of the above suggested type, which is characterized that the layers of the closure element by means of a peelable Adhesive layer are glued, and that the opening aid as well as the the plastic layer having layer in the perforations or predetermined breaking points are adhesive-free.

Mögliche Ausgestaltungen des erfindungsgemäßen zweilagigen Verschlusselementes sind gemäß Unteransprüche offenbart.Possible embodiments of the inventive two-layer closure element are disclosed according to subclaims.

Die Erfindung betrifft weiters ein Verfahren zur Herstellung des erfindungsgemäßen Verschlusselementes, wobei man in einem ersten Verfahrensschritt die Lagen des Verschlusselementes in Form eines Vorverbundes herstellt und an der die Kunststoffschicht aufweisenden Lage Perforationen oder Sollbruchstellen anbringt, dass man anschließend durch Kaltkaschieren die Lagen des Verschlusselementes miteinander verklebt, wobei jedoch der Bereich der Perforationen oder Sollbruchstellen an der die Kunststoffschicht aufweisenden Lage sowie der Bereich der Öffnungshilfe kleberfrei bleiben.The invention further relates to a process for the preparation of closure element according to the invention, wherein in a first Process step, the layers of the closure element in the form of a Produces pre-composite and at the plastic layer having Location attaches perforations or predetermined breaking points that one subsequently by cold laminating the layers of the closure element glued together, but the area of the perforations or predetermined breaking points on the layer having the plastic layer and the area of the opening aid remain adhesive-free.

Weitere Ausgestaltungen des erfindungsgemäßen Verfahrens sind gemäß Unteransprüche offenbart.Further embodiments of the method according to the invention are according to Subclaims disclosed.

Die Erfindung wird im Folgenden anhand einer möglichen Ausführungsform der Erfindung sowie anhand einer möglichen Verfahrensvariante zur Herstellung des erfindungsgemäßen Verschlusselementes näher erläutert. Diese möglichen Ausführungsformen werden anhand der Skizzen gemäß Figurendarstellungen 1 bis 3 gezeigt, wobei Fig. 1 eine mögliche Ausführungsform des erfindungsgemäßen zweilagigen Verschlusselementes, Fig. 2 eine mögliche Verfahrensführung zur Herstellung des erfindungsgemäßen Verschlusselementes sowie Fig. 3 einen Behälter, welcher mit einem erfindungsgemäßen Verschlusselement verschlossen ist, zeigen.The invention will be described below with reference to a possible embodiment of the invention and by means of a possible variant of the method for producing the closure element according to the invention in more detail explained. These possible embodiments are based on Sketches according to figure representations 1 to 3 shown, wherein Fig. 1 a possible embodiment of the inventive two-ply Closure element, Fig. 2 shows a possible procedure for the Production of the closure element according to the invention and FIG. 3 a container, which with a closure element according to the invention is closed, show.

Bei der Herstellung des erfindungsgemäßen Verschlusselementes 1 werden die einzelnen Lagen 2 und 3 in Form eines Vorverbundes hergestellt.In the production of the closure element 1 according to the invention the individual layers 2 and 3 are produced in the form of a pre-bond.

Für die Herstellung der dem Behälter abgewandten Lage 2 wird beispielsweise eine Aluminiumfolie, deren Dicke in einem Bereich von 10 bis 100 mm liegt, verwendet. Es ist jedoch auch möglich, Kunststofffolien in einem Dickenbereich von 10 bis 100 mm einzusetzen. Die Kunststoffe können dabei aus der Gruppe Polypropylen, Polyethylen, Polyester, Polyacrylat, Polyamid oder Polystyrol ausgewählt werden.For the production of the container 2 facing away from layer 2, for example an aluminum foil whose thickness is in a range of 10 to 100 mm is used. However, it is also possible to use plastic films to be used in a thickness range of 10 to 100 mm. The Plastics can be selected from the group polypropylene, polyethylene, Polyester, polyacrylate, polyamide or polystyrene can be selected.

Diese Metall- oder Kunststofffolie 7 kann nunmehr an ihrer dem Betrachter zugewandten Oberflächenseite mit einem Druckbild ausgestattet werden. Dieses kann in seiner Oberflächenausgestaltung sowohl glatt als auch rau sein. Die Oberflächenrauigkeit ergibt durch unregelmäßige, aber auch regelmäßige Anordnung der Druckmotive das gewünschte Druckbild. Weiters erleichtert die Oberflächenrauigkeit das Entstapeln der üblicherweise in Magazinen übereinander aufbewahrten Verschlusselemente.This metal or plastic film 7 can now at her the Observer facing surface side equipped with a printed image become. This may be in its surface design be both smooth and rough. The surface roughness results by irregular, but also regular arrangement of the print motifs the desired print image. It also facilitates the surface roughness the unstacking of the usually in magazines on top of each other preserved closure elements.

An der dem Druckbild gegenüberliegenden Seite wird die Folie 7 ausschließend mit einer heißsiegelbaren Schicht 8 versehen. Diese kann als Heißsiegellack, Coextrusionsbeschichtung oder peelfähiger Kunststofffilm vorliegen.At the opposite side of the printed image, the film is 7th excluding provided with a heat-sealable layer 8. These Can be used as a heat sealing varnish, coextrusion coating or peelable Plastic film present.

In einem weiteren Verfahrensschritt wird die dem Behälter zugewandte Lage 3 hergestellt. Dabei wird eine Kunststofffolie 5, beispielsweise eine Polypropylenfolie mit einer Dicke von 10 bis 100 mm, mit einer heißsiegelbaren Schicht 9, kaschiert. Diese Beschichtung kann ebenso als Heißsiegellack, Coextrusionsbeschichtung oder peelfähiger Kunststofffilm vorliegen, wobei dessen Siegelnahtfestigkeit, bedingt durch Auswahl, chemische Konstitutionen sowie Vernetzungsgrad der Komponenten höher als jene der Schicht 8 sein muss. Dies deshalb, da die durch die Schicht 9 erzeugte Siegelnahtfestigkeit den luftdichten Verschluss der Packung oder des Behälters gewährleisten soll, wogegen die durch die Schicht 8 erzeugte Siegelnahtfestigkeit die Verbindung der Lagen 2 und 3 bewirken, jedoch gleichzeitig den "Peelvorgang" d.h. das Ablösen der Lagen voneinander ermöglichen soll.In a further method step, the container facing Layer 3 made. In this case, a plastic film 5, for example a polypropylene film with a thickness of 10 to 100 mm, with a heat sealable layer 9, laminated. This coating can as well as heat sealing lacquer, coextrusion coating or peelable Plastic film present, with its sealed seam strength, conditional by selection, chemical constitution as well as degree of crosslinking of the Components must be higher than that of the layer 8. This is why the seal seam strength generated by the layer 9 the airtight To ensure closure of the package or container, whereas the seal seam strength generated by the layer 8 is the Connection of the layers 2 and 3 cause, but at the same time the "Peeling process" i. allow the detachment of the layers from each other should.

Nach dem Kaschieren mit der heißsiegelbaren Schicht 9 werden an der Oberfläche der Kunststoffolie 5 Perforationen oder Sollbruchstellen 6 angebracht. Durch oberflächliches Anritzen der Kunststoffolie werden beispielsweise schlitzförmige Perforationen, durch Nadeln werden hingegen punktförmige Sollbruchstellen erzeugt.After lamination with the heat-sealable layer 9 are at the Surface of the plastic film 5 perforations or predetermined breaking points 6 attached. By superficial scoring of the plastic film become, for example, slot-shaped perforations, by needles In contrast, point-shaped predetermined breaking points are generated.

Um die Lagerung der endgefertigten erfindungsgemäßen Verschlusselemente 1, welche üblicherweise in einem Stapel erfolgt, zu erleichtern, wird die heißsiegelbare Schicht 9, welche an der Kunststofffolie 5 aufkaschiert wird, vorteilhafterweise in Form eines oberflächenrauen Aufdruckes 10 aufgetragen. Dies erfolgt, wie in Fig. 1b gezeigt, beispielsweise durch Zusatz von Additiven, wie Siliziumpartikel. Durch die erzeugte Oberflächenrauigkeit ist der Entstapelungsvorgang beim Verwenden der erfindungsgemäßen Verschlusselemente 1 wesentlich erleichtert. Dies deshalb, da zwischen den oberflächlich angebrachten "Deformationen" Luft eingeschlossen wird, und deshalb die einzelnen Verschlusselemente beim Entstapeln leichter voneinander abgenommen werden können. Dieser Vorgang kann zusätzlich dadurch verbessert werden, dass - wie in Fig. 1c gezeigt - der oberflächenraue Aufdruck der heißsiegelbaren Schicht 9 in Form von Abstandhaltern 11 vorgesehen ist. Diese Abstandhalter schließen, bedingt durch ihre geometrische Anordnung, in den ebenso regelmäßig angeordneten Zwischenräumen Luft ein, sodass der Entstapelungsvorgang zusätzlich erleichtert ist. Dies ist insbesondere dann notwendig, wenn, wie im Falle von Lebensmitteln, beim Abpacken die Behälter rasch verschlossen werden müssen.To the storage of the finished closure elements according to the invention 1, which is usually done in a stack, to facilitate is the heat-sealable layer 9, which on the plastic film 5 is laminated, advantageously in the form of a surface-gray imprint 10 applied. This is done as in Fig. 1b shown, for example by the addition of additives, such as Silicon particles. By the generated surface roughness is the Entstapelungsvorgang when using the closure elements of the invention 1 much easier. This is why, between including the superficially placed "deformations" of air is, and therefore the individual closure elements during unstacking easier to remove from each other. This process can additionally be improved by that - as shown in Fig. 1c - The surface-gray imprint of the heat-sealable layer 9 in the form is provided by spacers 11. Close these spacers, conditioned by their geometric arrangement, in the equally regular arranged intervening air, so the Entstapelungsvorgang is additionally facilitated. This is especially true necessary if, as in the case of food, when packing the Container must be closed quickly.

Weiters ist es möglich, den auf der dem Behälter abgewandten Lage 2 aufgebrachten Aufdruck in der vorgenannten oberflächenrauen Ausgestaltung aufzubringen, sodass auch durch diese Maßnahme zusätzlich oder allein die Entstapelbarkeit bewirkt oder zusätzlich unterstützt wird.Furthermore, it is possible that on the side facing away from the container. 2 applied print in the aforementioned surface-gray design apply, so even by this measure in addition or alone causes the Entstapelbarkeit or additionally supported becomes.

Die als Vorverbund vorliegenden Lagen 2 und 3 des erfindungsgemäßen Verschlusselementes werden nunmehr in einem Kaltkaschierverfahren, wie in Fig. 2 gezeigt, miteinander verklebt. Dabei wird in einem Vorratsbehälter 12 der Kleber 4, beispielsweise ein Polyurethankleber, mittels einer Auftragswalze 13 aus dem Behälter geschöpft, wobei gleichzeitig mit Hilfe der Kalibrierwalze 14 das Auftragsvolumen gesteuert werden kann. Ebenso kann anstelle von Polyurethan eine Acrylsäureestercopolymere enthaltende Dispersion eingesetzt werden. Diese unter der Bezeichnung Flexbond ® erhältliche Dispersion ist weichmacherfrei und daher besonders gut für das Verpacken von Lebensmitteln geeignet. Es wird nunmehr der Vorverbund in Form der die Kunststoffschicht enthaltenden Lage 3 von einer Vorratsrolle 15 abgezogen und über ein Umlenkrolle 16 an die Oberfläche der Auftragswalze 13 herangeführt. Bedingt durch die vorgegebene Oberflächenstruktur der Auftragswalze 13 sowie ein angesteuertes Heranführen des Vorverbundes 3 unter Zuhilfenahme von Regelelementen, erfolgt ein passgenauer Kleberauftrag, sodass die Perforationen oder Sollbruchstellen 6 in der die Kunststoffschicht aufweisenden Lage 3 kleberfrei bleiben.The pre-composite layers 2 and 3 of the invention Closure element are now in a cold laminating process, as shown in Fig. 2, glued together. It is in a Storage container 12 of the adhesive 4, for example a polyurethane adhesive, drawn from the container by means of an applicator roll 13, at the same time with the help of the calibration roller 14, the order volume can be controlled. Likewise, instead of polyurethane a dispersion containing Acrylsäureestercopolymere used become. This dispersion, available under the name Flexbond® is plasticizer-free and therefore particularly good for packaging suitable for food. It is now the Vorverbund in the form the layer containing the plastic layer 3 from a supply roll 15 withdrawn and a pulley 16 to the surface of the Application roller 13 introduced. Due to the given surface structure the applicator roll 13 and a controlled approach of the preliminary composite 3 with the aid of control elements, a precise application of adhesive takes place so that the perforations or Predetermined breaking points 6 in the plastic layer having layer. 3 remain adhesive-free.

Von der Vorratsrolle 17 wird nunmehr die die Metallschicht enthaltende Lage 2 abgezogen und mittels Anpresswalzen 18, 18' mit der die Kunststoffschicht und bereits den Kleber 4 aufweisenden Lage verpresst. Die Bereiche für die Öffnungshilfe 20 sind dabei derart angeordnet, dass diese ebenso wie die Perforationen oder Sollbruchstellen 6 klebefrei bleiben. Durch diesen Kaltkaschiervorgang werden die Lagen 2 und 3 miteinander verklebt, sodass das Verschlusselement 1' hergestellt wird. Bedingt durch die Art des Klebers 4, beispielsweise eines Polyurethanklebers, sowie den gewählten Kaltkaschiervorgang ist eine klebende Bindung zwischen den Einzellagen 2 und 3 des Verschlusselementes 1 gewährleistet, welche auch während des nachfolgenden Siegelvorganges beim Abpacken, d.h. beim Verschließen von Behältern, unverändert bestehen bleibt. Dies ermöglicht es, dass in einfacher Weise aus der Bahn 1' - wie in Fig. 2 skizziert - durch Stanzen die gewünschten Verschlusselemente 1 hergestellt werden können, ohne dass die Einzellagen 2, 3 in ihrer Positionierung verändert werden. Beim Stanzen wird die ebenso klebefrei vorliegende Öffnungshilfe, wie die Grifflasche 20, 20' gebildet.From the supply roll 17 is now containing the metal layer Layer 2 deducted and by means of pressure rollers 18, 18 'with the Plastic layer and already pressed the adhesive 4 having position. The areas for the opening aid 20 are such arranged that these as well as the perforations or breaking points 6 stick-free. Through this cold laminating process the layers 2 and 3 are glued together, so that the closure element 1 'is produced. Due to the nature of the adhesive 4, for example a polyurethane adhesive, as well as the selected Kaltkaschiervorgang is an adhesive bond between the individual layers 2 and 3 ensures the closure element 1, which also during the subsequent sealing process when packaging, i. when closing of containers, remains unchanged. This allows that in a simple manner from the web 1 '- as sketched in Fig. 2 - by Punching the desired closure elements 1 are produced can, without the individual layers 2, 3 in their positioning to be changed. When punching, the equally stick-free is present Opening aid, as the pull tab 20, 20 'formed.

Die erfindungsgemäßen Verschlusselemente 1 werden nach dem Stanzen in Stapeln gelagert und können der weiteren Verwendung, nämlich dem Verschließen von Lebensmittelbehältern, zugeführt werden. Dabei werden beispielsweise Mikrowellenbehälter 19, welche bereits mit Lebensmittel gefüllt sind, kontinuierlich mit dem erfindungsgemäßen Verschlusselement abgedeckt und mittels Siegelwerkzeugen luftdicht verschlossen. Vor dem Erwärmen in einem Mikrowellenherd wird, wie in Fig. 3 gezeigt, die, beispielsweise eine Metallschicht enthaltende Lage 2 an der Griffflasche 20 angefasst und in Richtung des Pfeiles mit der Anreißkraft F1 von der die Kunststoffschicht aufweisenden Lage 3 abgezogen. Durch diesen Peelvorgang werden nunmehr die Sollbruchstellen oder Perforationen 6 an der Kunststoffschicht freigelegt, wogegen der Kleber, wie in Fig. 3 gezeigt, in Form eines streifenförmigen Musters an der beispielsweise eine Metallschicht enthaltenden Lage 2 haften bleibt. Dadurch ist auch gewährleistet, dass jegliche Art des Eindringens von Kleber durch die Sollbruchstellen oder Perforationen der Kunststoffschicht vermieden wird, da dieser erst nach gänzlichem Abziehen von der die Metallschicht enthaltenden Lage 2 in einem Mikrowellenofen erwärmt wird. Nach dem Erwärmen kann auch die die Kunststoffschicht aufweisende Lage 3 durch Ziehen an der Grifflasche 20' in Richtung des Pfeiles F2 vom Behälter 19 abgezogen werden, sodass die Entnahme des Packungsgutes ermöglicht ist.The closure elements 1 according to the invention are stored in stacks after punching and can be supplied for further use, namely the closing of food containers. In this case, for example, microwave container 19, which are already filled with food, continuously covered with the closure element according to the invention and hermetically sealed by means of sealing tools. Before heating in a microwave oven, as shown in Fig. 3, which, for example, a metal layer containing layer 2 is touched on the handle bottle 20 and withdrawn in the direction of the arrow with the Anreißkraft F 1 of the layer 3 having the plastic layer. As a result of this peeling process, the predetermined breaking points or perforations 6 on the plastic layer are now exposed, whereas the adhesive, as shown in FIG. 3, remains in the form of a strip-like pattern on the layer 2 containing, for example, a metal layer. This also ensures that any type of penetration of adhesive through the predetermined breaking points or perforations of the plastic layer is avoided, since this is heated only after complete stripping of the layer 2 containing the metal layer in a microwave oven. After heating, the layer 3 having the plastic layer can also be pulled off from the container 19 by pulling on the grip tab 20 'in the direction of the arrow F 2 , so that the removal of the packaged goods is made possible.

Zusammenfassend kann daher gesagt werden, dass durch das erfindungsgemäße Verschlusselement 1 nicht nur ein erleichtertes Verschließen von Lebensmittelbehältern, wie Mikrowellenbehälter, ermöglicht ist, da ein gegenseitiges Verschieben oder Verrutschen der Einzellagen bedingt durch die Kleberschicht unterbunden ist, sondern dass auch durch die Peelfähigkeit des Klebers jegliche Art des Eindringens von Kleber in den Lebensmittelbehälter, sohin in das Lebensmittel, in jedem Fall vermieden wird.In summary, it can therefore be said that by the invention Closure element 1 not only easier closure of food containers, such as microwave containers is because a mutual shifting or slipping of the Individual layers is prevented by the adhesive layer, but that also by the peelability of the adhesive any kind of Penetration of glue into the food container, so into the Food is avoided in any case.

Claims (15)

Deckelförmig ausgestanztes Element (1) zum Verschließen von Behältern (19) bestehend aus zwei Lagen (2, 3) mit zumindest einer innerhalb dieser Lagen integrierten Öffnungshilfe (20), wobei die in Richtung des Behälters (19) angeordnete Lage (3) eine mit Perforationen oder Sollbruchstellen (6) versehene Kunststoffschicht (5) aufweist, dadurch gekennzeichnet, dass die Lagen (2, 3) des Verschlusselementes (1) mittels einer peelfähigen Kleberschicht (4) verklebt sind, und dass die Öffnungshilfe (20) sowie die die Kunststoffschicht (5) aufweisende Lage (3) im Bereich ihrer Perforationen oder Sollbruchstellen (6) kleberfrei sind.Cover-shaped punched-out element (1) for closing containers (19) consisting of two layers (2, 3) with at least one integrated within these layers opening aid (20), wherein in the direction of the container (19) arranged layer (3) with a Having perforations or predetermined breaking points (6) provided plastic layer (5), characterized in that the layers (2, 3) of the closure element (1) by means of a peelable adhesive layer (4) are glued, and that the opening aid (20) and the plastic layer (5) layer (3) in the region of their perforations or predetermined breaking points (6) are adhesive-free. Deckelförmig ausgestanztes Element nach Anspruch 1, dadurch gekennzeichnet, dass die Kleberschicht (4) aus einem Polyurethankleber besteht.Lid-shaped punched element according to claim 1, characterized in that the adhesive layer (4) consists of a polyurethane adhesive. Deckelförmig ausgestanztes Element nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Lagen (2, 3) des Elementes aus Mono- oder Verbundmaterialien bestehen.Lid-shaped punched element according to claim 1 or 2, characterized in that the layers (2, 3) of the element consist of mono- or composite materials. Deckelförmig ausgestanztes Element nach einer der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die vom Behälter abgewandte Lage (2) aus einer Metallfolie, vorzugsweise eine Aluminiumfolie, besteht.Lid-shaped punched element according to one of claims 1 to 3, characterized in that the position facing away from the container (2) consists of a metal foil, preferably an aluminum foil. Deckelförmig ausgestanztes Element nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die mit Perforationen oder Sollbruchstellen (6) versehene Kunststoffschicht (5) aus Kunststoffen ausgewählt aus der Gruppe Polypropylen, Polyethylen, Polyester, Polyacrylat, Polyamid, Polystyrol sowie daraus gebildeten Copolymeren besteht.Lid-shaped punched element according to one of claims 1 to 4, characterized in that the plastic layer (5) provided with perforations or predetermined breaking points (6) consists of plastics selected from the group consisting of polypropylene, polyethylene, polyester, polyacrylate, polyamide, polystyrene and copolymers formed therefrom , Deckelförmig ausgestanztes Element nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die vom Behälter abgewandte Lage (2) an ihrer der peelfähigen Kleberschicht zugewandten Oberflächenseite mit einer heißsiegelbaren Schicht (8) versehen ist. Lid-shaped punched element according to one of claims 1 to 5, characterized in that the layer facing away from the container (2) is provided on its the peelable adhesive layer facing surface side with a heat-sealable layer (8). Deckelförmig ausgestanztes Element nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die vom Behälter abgewandte Lage (2) an ihrer der peelfähigen Kleberschicht abgewandten Seite ein Druckbild, gegebenenfalls mit oberflächenrauer Ausgestaltung, aufweist.Cover-shaped punched element according to one of claims 1 to 6, characterized in that the side facing away from the container layer (2) on its side facing away from the peelable adhesive layer side of a printed image, optionally with surface-rough design. Deckelförmig ausgestanztes Element nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Kunststoffschicht (5) an ihrer dem Behälterrand zugewandten Seite mit einer heißsiegelbaren Schicht (9) versehen ist, deren Siegelnahtfähigkeit größer als die zwischen den Lagen (2) und (3) erzeugten Siegelnahtfestigkeit.Lid-shaped punched element according to one of claims 1 to 7, characterized in that the plastic layer (5) is provided on its side facing the container edge with a heat-sealable layer (9) whose sealing ability greater than that between the layers (2) and (3 ) produced seal seam strength. Deckelförmig ausgestanztes Element nach Anspruch 8, dadurch gekennzeichnet, dass die heißsiegelbare Schicht (9) oberflächenrau ist.Lid-shaped punched element according to claim 8, characterized in that the heat-sealable layer (9) is surface gray. Verschlusselement nach Anspruch 9, dadurch gekennzeichnet, dass die heißsiegelbare Schicht (9) in Form von geometrisch angeordneten Abstandshaltern (11) vorliegt.Closure element according to claim 9, characterized in that the heat-sealable layer (9) is in the form of geometrically arranged spacers (11). Deckelförmig ausgestanztes Element nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Öffnungshilfe (20) die Form einer Grifflasche aufweist.Lid-shaped punched element according to one of claims 1 to 10, characterized in that the opening aid (20) has the shape of a grip tab. Deckelförmig ausgestanztes Element nach Anspruch 11, dadurch gekennzeichnet dass, die Grifflasche (20, 20') in beiden Lagen des Elementes vorliegt.A lid-shaped punched-out element according to claim 11, characterized in that the grip tab (20, 20 ') is present in both layers of the element. Verfahren zur Herstellung eines zweilagigen, deckelförmig ausgestanzten Verschlusselementes (1) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Lagen (2, 3) des Verschlusselementes in Form von Vorverbunden hergestellt werden, dass an der die Kunststoffschicht (5) aufweisenden Lage (3) Perforationen oder Sollbruchstellen (6) vorgesehen werden, und dass anschließend die Lagen (2, 3) in einem Kaltkaschiervorgang miteinander verklebt werden, wobei die Bereiche der Perforationen oder Sollbruchstellen (6) an der die Kunststoffschicht (5) aufweisenden Lage (3) sowie der Bereich der Öffnungshilfe (20, 20') kleberfrei bleiben. A method for producing a two-layer, lid-shaped punched closure element (1) according to one of claims 1 to 12, characterized in that the layers (2, 3) of the closure element are produced in the form of Vorverbunden that at the plastic layer (5) having position (3) Perforations or predetermined breaking points (6) are provided, and then the layers (2, 3) are glued together in a cold laminating process, wherein the areas of the perforations or predetermined breaking points (6) on the plastic layer (5) having position (3 ) as well as the area of the opening aid (20, 20 ') remain adhesive-free. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass der Kaltkaschiervorgang durch Regelelemente gesteuert wird, sodass die Perforationen oder Sollbruchstellen (6) an der die Kunststoffschicht (5) aufweisenden Lage (3) sowie der Bereich der Öffnungshilfe (20, 20') kleberfrei bleiben.A method according to claim 13, characterized in that the cold lamination process is controlled by control elements, so that the perforations or predetermined breaking points (6) on the plastic layer (5) having layer (3) and the area of the opening aid (20, 20 ') remain adhesive-free. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass beim Kaltkaschieren der Kleber (4) in Form eines streifenförmigen Musters aufgetragen wird und dass durch diesen streifenförmigen Kleberauftrag die Perforationen oder Sollbruchstellen (6) an der die Kunststoffschicht (5) aufweisenden Lagen (3) kleberfrei bleiben.A method according to claim 14, characterized in that the cold lamination of the adhesive (4) is applied in the form of a strip-like pattern and that by this strip-shaped adhesive application, the perforations or predetermined breaking points (6) on the plastic layer (5) having layers (3) remain adhesive-free ,
EP05450003A 2004-02-02 2005-01-13 Double-layered, lid-shaped stamped closing element Active EP1559658B1 (en)

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PL05450003T PL1559658T3 (en) 2004-02-02 2005-01-13 Double-layered, lid-shaped stamped closing element
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AT0014604A AT500536B8 (en) 2004-02-02 2004-02-02 DOUBLE-SIDED, COVER-LOCKED LOCKING ELEMENT
AT1462004 2004-02-02

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1842792A1 (en) * 2006-04-07 2007-10-10 Sonoco Development, Inc. Membrane closure for container
WO2008006123A1 (en) * 2006-07-13 2008-01-17 Teich Aktiengesellschaft Composite material, method for the production thereof, and use of the same as packing material
WO2012069050A1 (en) * 2010-11-25 2012-05-31 Faerch Plast A/S Sealed container for foodstuffs
LT5932B (en) 2012-03-27 2013-04-25 Uab Mantinga Container with double lid
EP2644531A1 (en) 2012-03-27 2013-10-02 UAB "Mantinga" Container with a double cover
EP2644531B1 (en) 2012-03-27 2018-06-27 UAB "Mantinga" Container with a double cover
EP2909098A4 (en) * 2012-10-19 2016-06-01 Å&R Carton Lund Ab Flexible lid
EP2909098B1 (en) 2012-10-19 2017-07-19 Å&R Carton Lund AB Flexible lid
WO2021045848A1 (en) * 2019-09-05 2021-03-11 Sonoco Development, Inc. Membrane lid with integrated two-stage tab system
US11299334B2 (en) 2019-09-05 2022-04-12 Sonoco Development, Inc. Membrane lid with integrated two-stage tab system

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US20050247713A1 (en) 2005-11-10
DE502005011021D1 (en) 2011-04-14
DK1559658T3 (en) 2011-06-06
AT500536B1 (en) 2006-07-15
US7789262B2 (en) 2010-09-07
AT500536A1 (en) 2006-01-15
HRP20110159T1 (en) 2011-04-30
EP1559658B1 (en) 2011-03-02
PT1559658E (en) 2011-03-14
ES2357842T3 (en) 2011-05-03
AT500536B8 (en) 2007-02-15
PL1559658T3 (en) 2011-07-29
ATE500163T1 (en) 2011-03-15
EP1559658A3 (en) 2006-11-02
SI1559658T1 (en) 2011-06-30

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