EP0600502B1 - Standing pouch with improved puncturable opening - Google Patents

Standing pouch with improved puncturable opening Download PDF

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Publication number
EP0600502B1
EP0600502B1 EP93119475A EP93119475A EP0600502B1 EP 0600502 B1 EP0600502 B1 EP 0600502B1 EP 93119475 A EP93119475 A EP 93119475A EP 93119475 A EP93119475 A EP 93119475A EP 0600502 B1 EP0600502 B1 EP 0600502B1
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EP
European Patent Office
Prior art keywords
foil
beverage container
sealing
container according
piercing opening
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EP93119475A
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German (de)
French (fr)
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EP0600502A2 (en
EP0600502A3 (en
Inventor
Rainer Dr. Wild
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Deutsche Sisi Werke Betriebs GmbH
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Deutsche Sisi Werke Betriebs GmbH
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Application filed by Deutsche Sisi Werke Betriebs GmbH filed Critical Deutsche Sisi Werke Betriebs GmbH
Priority to DE59306656.1T priority Critical patent/DE59306656C5/en
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    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"

Definitions

  • the invention relates to a beverage container, in particular beverage bags made of monomaterial or multi-layer composite material, which is provided with a puncture opening for piercing a drinking straw.
  • DE-A-10 99 445 Another structure is described in DE-A-10 99 445, which is implemented on a tetrahedral packaging container.
  • the container wall is formed from a carrier layer and a plastic layer on the inside.
  • An opening is provided for inserting a drinking straw, but this does not go through the inner plastic layer.
  • the drinking straw only has to penetrate the plastic layer at this puncture opening.
  • the present invention is based on the object of creating a beverage container which enables easy insertion of a drinking straw and which is also justifiable from the point of view of environmental protection,
  • this object is achieved by a beverage container with the features of the characterizing part of claim 1 or claim 2.
  • This solution enables simple insertion of the drinking straw without an additional tear-open flap to be attached to the outside, the puncture opening being sealed only by a sealing film which is attached to the inside of the mono- or composite material around the puncture opening.
  • the weld at the puncture opening is relieved by fixing the sealing film to the side seams.
  • the sealing film can either be welded in a ring-shaped, square, rectangular, grid-like manner or in concentric circles around the puncture opening on the inside of the mono- or composite material as a "patch". It is crucial that there is a tight seal around the puncture opening.
  • the puncture opening can either be a puncture hole or be punched into the mono or composite material like a cross slot.
  • a cross-slit puncture opening gives me the advantage that the material of the container wall is still largely available as an oxygen barrier.
  • Polyethylene, polypropylene and copolymers are provided as materials for the sealing film.
  • the material which is between 20 and 60 ⁇ m thin, allows the straw to be easily inserted, thereby avoiding piercing the back of the bag and preventing the liquid from escaping uncontrollably from the puncture hole.
  • the use of composite film as a sealing film has proven to be particularly advantageous, the structure of which can look like the following: sealing material, coupling agent, barrier layer, coupling agent, sealing material, polyethylene, polypropylene and copolymers being suitable as sealing material, and materials such as EVOH, polyamides as the barrier layer or polyvinyl alcohol can be used.
  • the sealing film can not only be produced as a coextrusion film, but the individual film layers can also be connected using laminating adhesive.
  • One advantage of such composite films is that the barrier layers are hardly permeable to oxygen, and thus there is ideal protection for the filling material.
  • the closure film can simply be designed as a strip and fixed to the side seams of the beverage bag by means of additional welding spots.
  • sealing film strip is made so wide that it protrudes in the area of the head seal seam, sufficient sealable material is available in this critical area so that the head seal seam can be securely welded in any case, also with regard to any foam formation and splashes of juice that may occur. Due to the additional sealing material at this point, the sealing layer of the front or back of the bag can be kept thinner, which leads to a more cost-effective production of the beverage bags. In this context, sealing film strips thicker than 60 ⁇ m can also be used.
  • the composite material which can be constructed as follows, for example, from the outside in: Polyester film / printing ink / laminating adhesive / aluminum foil / laminating adhesive / polyethylene film.
  • the laminating adhesive which is applied between aluminum foil and polyester foil, is exposed in conventional manufacturing processes by punching out the polyester foil.
  • the adhesive must therefore dry quickly so that the film webs do not stick together on the roll.
  • solvent-based adhesives One waives on the other hand, on the hole in the polyester film, since the puncture hole is only punched later in the course of the bag production, there is the possibility of using a solvent-free adhesive, which in turn is positive from an environmental point of view.
  • FIG. 1 shows a perspective view of a beverage bag 1 made of multilayer composite material 3 with a puncture hole 2 for piercing a drinking straw, with a height h and a width b.
  • FIG. 2 shows a longitudinal section through the front bag wall 14 of the beverage bag 1, consisting of a triple composite material 3, which is constructed from the outside in as follows: polyester film 6 (12 ⁇ m) / / printing ink / laminating adhesive 13 / aluminum film 5 (12 ⁇ m) / Laminating adhesive 13 / polyethylene film 4 (100 ⁇ m). A puncture hole 2 is punched through all layers 4, 5, 6 for piercing a drinking straw.
  • a sealing film 7 is welded around the puncture hole 2 at the welding points 8.
  • the beverage container is thus closed by the closure film 7, which can be easily pierced with a drinking straw.
  • FIG. 3 shows an exemplary embodiment of the invention, in which the sealing film strip 7 is welded in a ring around the puncture hole 2 at the welding points 8 on the inside of the composite material 3, and is additionally fixed to the side seams 12 of the beverage bag by means of welding points 9.
  • the sealing film strip does not protrude into the area of the head sealing seam 10.
  • FIG. 4 shows a further exemplary embodiment, the closure film 11 being welded in a ring shape as a “patch” around the puncture hole 2 at the welding points 8 on the inside of the composite material 3.
  • Figure 5 shows a third embodiment of the invention, wherein the sealing film strip 7 is attached as in the embodiment shown in Figure 3, but is so wide that it protrudes into the area of the head seal 10 to be welded to be, whereby there is sufficient sealable material to securely weld the sealing seam 10, so that the inner polyethylene layer 4 can be reduced to less than 90-100 microns thick.
  • the welding of the sealing film around the puncture hole 2 is not limited to an annular shape.
  • a monomaterial such as polyethylene or else a composite film can be used as the sealing film material, which can be constructed as follows: polyethylene film / coupling agent / EVOH / coupling agent / polyethylene film.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Cartons (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

The invention relates to a drinks container, in particular a drinks pouch, of mono material or multi-layered composite material, which is provided with a puncturable opening for puncturing with a drinking straw. To provide a drinks container which permits easy puncturing by a drinking straw and at the same time is acceptable from aspects of environmental protection, the puncturable opening is punched through all the layers of the mono material or composite material and on the inside of the mono material or composite material there is attached around the puncturable opening a closure film which is exposed to the outside through the puncturable opening.

Description

Die Erfindung bezieht sich auf einen Getränkebehälter, insbesondere Getränkebeutel aus Monomaterial oder mehrschichtigem Verbundmaterial, der mit einer Einstichsöffnung, zum Einstechen eines Trinkhalmes versehen ist.The invention relates to a beverage container, in particular beverage bags made of monomaterial or multi-layer composite material, which is provided with a puncture opening for piercing a drinking straw.

Bei Getränkebehältern der eingangs genannten Art besteht eines der vorrangigsten Probleme in der leichten Öffnung dieser Beutel, d.h., eine verbesserte Einstechmöglichkeit für den Trinkhalm zu schaffen. Besonders bei heißsteril abgefüllten Behältnissen ergeben sich Probleme beim Einstechen des Trinkhalmes, da sich beim Abfüllen im Kopfraum des Behältnisses Wasserdampf befindet, der beim Abkühlen kondensiert und sich somit im Kopfraum kaum noch Luft befindet. Dies hat zur Folge, daß sich das Einstichsloch nunmehr unter dem Flüssigkeitsspiegel befindet, wodurch es bei unvorsichtigem Öffnen zu unkontrolliertem Flüssigkeitsaustritt kommen kann. Weiter wird der nachgiebige und flexible Beutel durch die ausgeübte Einstichskraft relativ flach, d.h., Vorder- und Rückseite liegen nahe beieinander, so daß bei unvorsichtigem Einstechen die Gefahr besteht, daß auch die Rückseite des Getränkebehälters durchstochen wird. Das Problem des "Durchstechens" ist auch auf die bisher verwendeten Materialien und Materialstärken zurückzuführen.With beverage containers of the type mentioned at the outset, one of the most important problems is the easy opening of these bags, i.e. to create an improved piercing option for the drinking straw. Problems arise when piercing the drinking straw, particularly in the case of hot-sterile filled containers, since during the filling there is water vapor in the head space of the container, which condenses when it cools down and therefore there is hardly any air in the head space. The result of this is that the puncture hole is now below the liquid level, which can result in uncontrolled liquid leakage if the opening is careless. Furthermore, the resilient and flexible pouch becomes relatively flat due to the puncture force exerted, i.e. the front and back are close together, so that if the puncture is carelessly punctured there is a risk that the back of the beverage container will also be punctured. The problem of "piercing" is also due to the materials and material thicknesses previously used.

Eine Lösung hinsichtlich dieses Problems ist aus der Patentschrift AT 36 59 97 bekannt, wobei bei einem Getränkebehältnis aus mehrschichtigem Verbundmaterial eine bis auf die Innenschicht durchgehende Vorlochung vorgesehen ist, und die Vorlochung durch einen mehrschichtigen Verschlußstreifen abgedeckt ist, der im Bereich der Verlochung mit der freigelegten Innenschicht der Behälterwand verschweißt ist. Beim Abreißen des Verschlußstreifens reißt die Innenschicht auf und ermöglicht somit ein einfaches Einführen des Trinkhalmes. Unter Gesichtspunkten des Umweltschutzes bringt die oben aufgeführte Lösung jedoch erhebliche Schwierigkeiten mit sich, da die Aufrißlasche von den Verbrauchern nicht ordnungsgemäß entsorgt wird, sondern einfach weggeworfen wird.A solution to this problem is known from the patent AT 36 59 97, with one Beverage container made of multi-layer composite material is provided a pre-perforation continuous to the inner layer, and the pre-perforation is covered by a multi-layer sealing strip which is welded in the area of the perforation to the exposed inner layer of the container wall. When the closure strip is torn off, the inner layer tears open and thus enables the drinking straw to be inserted easily. From the point of view of environmental protection, however, the above solution presents considerable difficulties, since the tear-open tab is not properly disposed of by consumers, but is simply thrown away.

Ein anderer Aufbau ist in DE-A-10 99 445 beschrieben, die an einem tetraederförmigen Verpackungsbehälter verwirklicht ist. Die Behälterwand ist aus einer Trägerschicht und einer Kunststoffschicht an deren Innenseite gebildet. Eine Öffnung ist zum Einstecken eines Trinkhalmes vorgesehen, die jedoch nicht durch die innere Kunststoffschicht geht. Der Trinkhalm muß also an dieser Einstichsöffnung nur die Kunststoffschicht durchstoßen.Another structure is described in DE-A-10 99 445, which is implemented on a tetrahedral packaging container. The container wall is formed from a carrier layer and a plastic layer on the inside. An opening is provided for inserting a drinking straw, but this does not go through the inner plastic layer. The drinking straw only has to penetrate the plastic layer at this puncture opening.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe Zugrunde, einen Getränkebehälter zu schaffen, der ein leichtes Einstechen eines Trinkhalmes ermöglicht und gleichzeitig auch unter Gesichtspunkten des Umweltschutzes vertretbar ist,Proceeding from this, the present invention is based on the object of creating a beverage container which enables easy insertion of a drinking straw and which is also justifiable from the point of view of environmental protection,

Erfindungsgemäß wird diese Aufgabe durch einen Getränkebehälter mit den Merkmalen des charakterisierenden Teiles des Anspruchs 1 oder des Anspruchs 2 gelöst.According to the invention, this object is achieved by a beverage container with the features of the characterizing part of claim 1 or claim 2.

Diese Lösung ermöglicht ein einfaches Einstechen des Trinkhalmes ohne zusätzliche auf der Außenseite anzubringende Aufrißlasche, wobei die Einstichsöffnung ausschließlich durch eine Verschlußfolie, die an der Innenseite des Mono- oder Verbundmaterials um die Einstichsöffnung angebracht ist, abgedichtet ist.This solution enables simple insertion of the drinking straw without an additional tear-open flap to be attached to the outside, the puncture opening being sealed only by a sealing film which is attached to the inside of the mono- or composite material around the puncture opening.

Im Falle des Anspruchs 1 ist durch die Fixierung der Verschlußfolie an den Seitennähten die Schweißstelle an der Einstichsöffnung entlastet. Im Falle des Anspruchs 2 kann die Verschlußfolie entweder ringförmig, quadratisch, rechteckig, rasterartig oder in konzentrischen Kreisen um die Einstichsöffnung an der Innenseite des Mono- oder Verbundmaterials materialsparend als "Flicken" aufgeschweißt sein. Entscheidend ist, daß um die Einstichsöffnung herum ein dichter Abschluß entsteht.In the case of claim 1, the weld at the puncture opening is relieved by fixing the sealing film to the side seams. In the case of claim 2, the sealing film can either be welded in a ring-shaped, square, rectangular, grid-like manner or in concentric circles around the puncture opening on the inside of the mono- or composite material as a "patch". It is crucial that there is a tight seal around the puncture opening.

Die Einstichsöffnung kann entweder als Einstichsloch oder kreuzschlitzartig in das Mono- oder Verbundmaterial eingestanzt sein. Eine kreuzschlitzartige Einstichsöffnung bringt den Vorteil mich sich, daß als Sauerstoffbarriere noch das Material der Behälterwand größtenteils zur Verfügung steht. Durch Wahl einer geeigneten Siegeltemperatur werden die durch die Einstanzung entstehenden dreieckigen Felder mit der darunterliegenden Verschlußfolie leicht versiegelt, so daß sie sich nicht nach außen aufwölben können. Beim Einstechen des Trinkhalmes werden die dreieckigen Felder dann nach innen gedrückt.The puncture opening can either be a puncture hole or be punched into the mono or composite material like a cross slot. A cross-slit puncture opening gives me the advantage that the material of the container wall is still largely available as an oxygen barrier. By choosing a suitable sealing temperature, the triangular fields created by the stamping are lightly sealed with the sealing film underneath so that they cannot bulge outwards. When the straw is inserted, the triangular fields are then pressed inwards.

Als Materialien für die Verschlußfolie sind Polyethylen, Polypropylen und Copolymere vorgesehen. Das zwischen 20 und 60 µm dünne Material erlaubt ein einfaches Einstechen des Trinkhalmes, wodurch ein Durchstechen der Rückseite des Beutels und ein unkontrolliertes Austreten der Flüssigkeit aus dem Einstichsloch vermieden wird. Als besonders vorteilhaft erweist sich der Einsatz von Verbundfolie als Verschlußfolie, deren Aufbau wie nachfolgend dargestellt aussehen kann: Siegelmaterial, Haftvermittler, Barriereschicht, Haftvermittler, Siegelmaterial, wobei als Siegelmaterial Polyethylen, Polypropylen und Copolymere in Frage kommen, und als Barriereschicht Materialien wie EVOH, Polyamide oder Polyvinylalkohol eingesetzt werden können. Die Verschlußfolie kann nicht nur als Coextrusionsfolie hergestellt werden, sondern die einzelnen Folienschichten auch mittels Kaschierkleber verbunden werden. Ein Vorteil solcher Verbundfolien ist, daß die Barriereschichten kaum sauerstoffpermeabl sind, und somit ein idealer Schutz für das Füllgut gegeben ist.Polyethylene, polypropylene and copolymers are provided as materials for the sealing film. The material, which is between 20 and 60 µm thin, allows the straw to be easily inserted, thereby avoiding piercing the back of the bag and preventing the liquid from escaping uncontrollably from the puncture hole. The use of composite film as a sealing film has proven to be particularly advantageous, the structure of which can look like the following: sealing material, coupling agent, barrier layer, coupling agent, sealing material, polyethylene, polypropylene and copolymers being suitable as sealing material, and materials such as EVOH, polyamides as the barrier layer or polyvinyl alcohol can be used. The sealing film can not only be produced as a coextrusion film, but the individual film layers can also be connected using laminating adhesive. One advantage of such composite films is that the barrier layers are hardly permeable to oxygen, and thus there is ideal protection for the filling material.

Einfacherweise kann die Verschlußfolie als Streifen ausgebildet sein und mittels zusätzlichen Schweißpunkten an den Seitennähten des Getränkebeutels fixiert sein.The closure film can simply be designed as a strip and fixed to the side seams of the beverage bag by means of additional welding spots.

Ist der Verschlußfolienstreifen so breit ausgeführt, daß er in dem Bereich der Kopfsiegelnaht übersteht, so ist in diesem kritischen Bereich ausreichend siegelfähiges Material vorhanden, so daß die Kopfsiegelnaht in jedem Fall sicher verschweißt werden kann, auch im Hinblick auf evtl. auftretende Schaumbildung und Saftspritzer. Durch das an dieser Stelle nunmehr zusätzlich vorhandene Siegelmaterial kann die Siegelschicht der Beutelvorder- bzw. -rückseite dünner gehalten werden, was zu einer kostengünstigeren Herstellung der Getränkebeutel führt. In diesem Zusammenhang können auch Verschlußfolienstreifen stärker als 60 µm eingesetzt werden.If the sealing film strip is made so wide that it protrudes in the area of the head seal seam, sufficient sealable material is available in this critical area so that the head seal seam can be securely welded in any case, also with regard to any foam formation and splashes of juice that may occur. Due to the additional sealing material at this point, the sealing layer of the front or back of the bag can be kept thinner, which leads to a more cost-effective production of the beverage bags. In this context, sealing film strips thicker than 60 µm can also be used.

Ein weiterer Vorteil ergibt sich bei der Herstellung des Verbundmaterials, das z.B. von außen nach innen wie folgt aufgebaut sein kann:
Polyesterfolie/Druckfarbe/Kaschierkleber/Aluminiumfolie/Kaschierkleber/Polyethylenfolie. Der Kaschierkleber, der zwischen Aluminiumfolie und Polyesterfolie aufgebracht wird, liegt bei herkömmlichen Herstellverfahren durch die Ausstanzung der Polyesterfolie offen. Der Kleber muß daher schnell trocknen, damit die Folienbahnen auf der Rolle nicht zusammenkleben. Dieses Problem läßt sich derzeit nur durch lösungsmittelhaltige Kleber lösen. Verzichtet man dagegen auf das Loch in der Polyesterfolie, da das Einstichloch erst später im Zuge der Beutelfertigung eingestanzt wird, so besteht die Möglichkeit des Einsatzes eines lösungsmittelfreien Klebers, was wiederum unter Umweltaspekten positiv ist.Another advantage arises in the production of the composite material, which can be constructed as follows, for example, from the outside in:
Polyester film / printing ink / laminating adhesive / aluminum foil / laminating adhesive / polyethylene film. The laminating adhesive, which is applied between aluminum foil and polyester foil, is exposed in conventional manufacturing processes by punching out the polyester foil. The adhesive must therefore dry quickly so that the film webs do not stick together on the roll. This problem can currently only be solved with solvent-based adhesives. One waives on the other hand, on the hole in the polyester film, since the puncture hole is only punched later in the course of the bag production, there is the possibility of using a solvent-free adhesive, which in turn is positive from an environmental point of view.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand von Zeichnungen näher erläutert.

Figur 1
zeigt in perspektivischer Ansicht einen Getränkebeutel gemäß der Erfindung,
Figur 2
zeigt einen Längsschnitt durch die vordere Beutelwand eines Getränkebeutels gemäß der vorliegenden Erfindung,
Figur 3
zeigt schematisch die Verschlußfolie um das Einstichsloch an der Innenseite des Verbundmaterials nach einem ersten Ausführungsbeispiel der vorliegenden Erfindung,
Figur 4
zeigt schematisch die Verschlußfolie um das Einstichsloch an der Innenseite des Verbundmaterials nach einem zweiten Ausführungsbeispiel der vorliegenden Erfindung,
Figur 5
zeigt schematisch die Verschlußfolie um das Einstichsloch an der Innenseite des Verbundmaterials nach einem dritten Ausführungsbeispiel.
Exemplary embodiments of the invention are explained in more detail below with reference to drawings.
Figure 1
shows a perspective view of a beverage bag according to the invention,
Figure 2
shows a longitudinal section through the front bag wall of a beverage bag according to the present invention,
Figure 3
shows schematically the sealing film around the puncture hole on the inside of the composite material according to a first embodiment of the present invention,
Figure 4
schematically shows the sealing film around the puncture hole on the inside of the composite material according to a second embodiment of the present invention,
Figure 5
shows schematically the sealing film around the puncture hole on the inside of the composite material according to a third embodiment.

Figur 1 zeigt in perspektivischer Ansicht einen Getränkebeutel 1 aus mehrschichtigem Verbundmaterial 3 mit einem Einstichsloch 2, zum Einstechen eines Trinkhalms, mit einer Höhe h und einer Breite b.FIG. 1 shows a perspective view of a beverage bag 1 made of multilayer composite material 3 with a puncture hole 2 for piercing a drinking straw, with a height h and a width b.

Figur 2 zeigt einen Längsschnitt durch die vordere Beutelwand 14 des Getränkebeutels 1, bestehend aus einem Dreifachverbundmaterial 3, das von außen nach innen wie folgt aufgebaut ist: Polyesterfolie 6 (12 µm)/ /Druckfarbe/Kaschierkleber 13/Aluminiumfolie 5 (12 µm)/Kaschierkleber 13/Polyethylenfolie 4 (100 µm). Dabei ist durch alle Schichten 4, 5, 6 ein Einstichsloch 2 zum Einstechen eines Trinkhalmes eingestanzt.FIG. 2 shows a longitudinal section through the front bag wall 14 of the beverage bag 1, consisting of a triple composite material 3, which is constructed from the outside in as follows: polyester film 6 (12 μm) / / printing ink / laminating adhesive 13 / aluminum film 5 (12 μm) / Laminating adhesive 13 / polyethylene film 4 (100 µm). A puncture hole 2 is punched through all layers 4, 5, 6 for piercing a drinking straw.

An der Innenseite des mehrschichtigen Verbundmaterials ist eine Verschlußfolie 7 um das Einstichsloch 2 an den Schweißstellen 8 angeschweißt. Der Getränkebehälter ist somit durch die Verschlußfolie 7 verschlossen, die leicht mit einem Trinkhalm durchstoßen werden kann.On the inside of the multilayer composite material, a sealing film 7 is welded around the puncture hole 2 at the welding points 8. The beverage container is thus closed by the closure film 7, which can be easily pierced with a drinking straw.

Figur 3 zeigt ein Ausführungsbeispiel der Erfindung, bei dem Verschlußfoliensteifen 7 ringförmig um das Einstichsloch 2 an den Schweißstellen 8 an der Innenseite des Verbundmaterials 3 angeschweißt ist, und zusätzlich an den Seitennähten 12 des Getränkebeutels mittels Schweißpunkten 9 fixiert ist. In diesem Ausführungsbeispiel ragt der Verschlußfolienstreifen nicht bis in den Bereich der Kopfsiegelnaht 10.FIG. 3 shows an exemplary embodiment of the invention, in which the sealing film strip 7 is welded in a ring around the puncture hole 2 at the welding points 8 on the inside of the composite material 3, and is additionally fixed to the side seams 12 of the beverage bag by means of welding points 9. In this exemplary embodiment, the sealing film strip does not protrude into the area of the head sealing seam 10.

Figur 4 zeigt ein weiteres Ausführungsbeispiel, wobei die Verschlußfolie 11 als "Flicken" ringförmig um das Einstichsloch 2 an den Schweißstellen 8 an der Innenseite des Verbundmaterials 3 angeschweißt ist.FIG. 4 shows a further exemplary embodiment, the closure film 11 being welded in a ring shape as a “patch” around the puncture hole 2 at the welding points 8 on the inside of the composite material 3.

Figur 5 zeigt ein drittes Ausführungsbeispiel der Erfindung, wobei der Verschlußfolienstreifen 7 wie bei dem in Figur 3 dargestellten Ausführungsbeispiel angebracht ist, jedoch so breit ausgeführt ist, daß er bis in den Bereich der Kopfsiegelnaht 10 übersteht, um mitverschweißt zu werden, wodurch ausreichend siegelfähiges Material vorhanden ist, um die Siegelnaht 10 sicher zu verschweißen, so daß die innere Polyethylenschicht 4 auf weniger als 90 - 100 µm Dicke reduziert werden kann.Figure 5 shows a third embodiment of the invention, wherein the sealing film strip 7 is attached as in the embodiment shown in Figure 3, but is so wide that it protrudes into the area of the head seal 10 to be welded to be, whereby there is sufficient sealable material to securely weld the sealing seam 10, so that the inner polyethylene layer 4 can be reduced to less than 90-100 microns thick.

Selbstverständlich beschränkt sich, wie in den Ausführungsbeispielen 1 bis 3 dargestellt, die Verschweißung der Verschlußfolie um das Einstichsloch 2 nicht auf eine ringförmige Form. Als Verschlußfolienmaterial kann entweder eine Monomaterial wie Polyethylen oder aber auch eine Verbundfolie eingesetzt werden, die wie folgt aufgebaut sein kann: Polyethylenfolie/Haftvermittler/EVOH/Haftvermittler/Polyethylenfolie.Of course, as shown in the exemplary embodiments 1 to 3, the welding of the sealing film around the puncture hole 2 is not limited to an annular shape. Either a monomaterial such as polyethylene or else a composite film can be used as the sealing film material, which can be constructed as follows: polyethylene film / coupling agent / EVOH / coupling agent / polyethylene film.

Claims (18)

  1. A beverage container, in particular a beverage bag, consisting of a monomaterial or a multi-layer compound material which is provided with a piercing opening for inserting a straw, characterized in that the piercing opening (2) is punched through all layers (4, 5, 6) of the mono- or compound material, and an additional sealing foil (7) is affixed around the piercing opening (2) at the inner side of the mono- or compound material (3), which is outwardly exposed by the piercing opening (2), the sealing foil (7) being welded at a first sealing point around the piercing opening (2) so that a tight seal is created, and being sealed at at least a second sealing point to side seams (12) of the beverage container (1).
  2. A beverage container, in particular a beverage bag, consisting of a monomaterial or a multi-layer compound material which is provided with a piercing opening for inserting a straw, characterized in that the piercing opening (2) is punched through all layers (4, 5, 6) of the mono- or compound material (3), and an additional sealing foil (11) is affixed around the piercing opening (2) at the inner side of the mono- or compound material (3), which is outwardly exposed by the piercing opening (2), the sealing foil being sealed as "patches" (11) to the piercing opening (2).
  3. A beverage container according to claim 1 or 2, characterized in that the piercing opening (2) is punched into the mono- or compound material (3) in cross recessed fashion.
  4. A beverage container according to claim 1 or 2, characterized in that the piercing opening (2) is punched in the form of a piercing hole.
  5. A beverage container according to claim 1 or 2, characterized in that a monofoil is provided as the sealing foil (7, 11).
  6. A beverage container according to any of claims 1 to 5, characterized in that polyethylene or polypropylene or copolymers are provided as sealing foil materials (7, 11).
  7. A beverage container according to claim 1 or 2, characterized in that a compound foil is provided as sealing foil (7, 11).
  8. A beverage container according to claim 7, characterized in that the sealing foil (7, 11) has the following structure: sealing material/adhesive agent/barrier layer/adhesive agent/sealing material.
  9. A beverage container according to claim 1 or 2, characterized in that the sealing foil (7, 11) has the following structure: sealing material/coating adhesive/barrier layer/coating adhesive/sealing material.
  10. A beverage container according to claim 8 or 9, characterized in that the barrier layer consists of EVOH or polyamides or polyvinyl alcohol.
  11. A beverage container according to any of claims 8, 9 or 10, characterized in that polyethylene or polypropylene or copolymers are provided as sealing material.
  12. A beverage container according to any of claims 1 to 11, characterized in that the sealing foil (7, 11) has a thickness of from 20 to 120 µm.
  13. A beverage container according to any of claims 1 to 11, characterized in that the sealing foil (7, 11) has a thickness of more than 60 µm.
  14. A beverage container according to claim 1, characterized in that the foil (7) is formed as a strip and the at least one second sealing point is formed by sealing points (9) at the side seams (12) of the beverage container (1).
  15. A beverage container according to claim 1 or 14, characterized in that the foil strip (7) is so wide that it projects in the area of the head sealing seam (10).
  16. A beverage container (1) according to claim 1 or 2, characterized in that the multi-layer compound material (3) is a triple compound foil which is built up from a polyester foil (6), an aluminum foil (5) and a polyethylene foil (4), the polyester foil (6) having a thickness of 9 to 15 µm and the aluminum foil having a thickness of 6 to 12 µm and the polyethylene foil having a thickness of 80 to 100 µm.
  17. A beverage container according to claim 15 and 16, characterized in that the polyethylene foil (4) of the triple compound foil is thinner than 80 µm.
  18. A beverage container according to claim 16, characterized in that the polyester foil (6) and the aluminum foil (5) are pasted together with solventless adhesive.
EP93119475A 1992-12-02 1993-12-02 Standing pouch with improved puncturable opening Expired - Lifetime EP0600502B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE59306656.1T DE59306656C5 (en) 1992-12-02 1993-12-02 Stand-up pouch with improved puncture opening

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240540A DE4240540A1 (en) 1992-12-02 1992-12-02 Stand-up pouch with improved puncture opening
DE4240540 1992-12-02

Publications (3)

Publication Number Publication Date
EP0600502A2 EP0600502A2 (en) 1994-06-08
EP0600502A3 EP0600502A3 (en) 1995-06-14
EP0600502B1 true EP0600502B1 (en) 1997-06-04

Family

ID=6474220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93119475A Expired - Lifetime EP0600502B1 (en) 1992-12-02 1993-12-02 Standing pouch with improved puncturable opening

Country Status (10)

Country Link
US (1) US5425583A (en)
EP (1) EP0600502B1 (en)
JP (1) JP2690263B2 (en)
CN (1) CN1037951C (en)
AT (1) ATE153959T1 (en)
DE (3) DE4244843C2 (en)
DK (1) DK0600502T3 (en)
ES (1) ES2105055T3 (en)
GR (1) GR3023759T3 (en)
SA (1) SA94140623B1 (en)

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Also Published As

Publication number Publication date
DE59306656C5 (en) 2014-09-25
EP0600502A2 (en) 1994-06-08
US5425583A (en) 1995-06-20
JPH072259A (en) 1995-01-06
EP0600502A3 (en) 1995-06-14
DE4244843C2 (en) 1999-07-15
CN1091388A (en) 1994-08-31
JP2690263B2 (en) 1997-12-10
DK0600502T3 (en) 1997-10-13
DE59306656D1 (en) 1997-07-10
ES2105055T3 (en) 1997-10-16
SA94140623B1 (en) 2006-06-10
CN1037951C (en) 1998-04-08
ATE153959T1 (en) 1997-06-15
GR3023759T3 (en) 1997-09-30
DE4240540A1 (en) 1994-06-09

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