EP0750564B1 - Cuboid flat-gabled composite packing and process for producing it - Google Patents

Cuboid flat-gabled composite packing and process for producing it Download PDF

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Publication number
EP0750564B1
EP0750564B1 EP95912253A EP95912253A EP0750564B1 EP 0750564 B1 EP0750564 B1 EP 0750564B1 EP 95912253 A EP95912253 A EP 95912253A EP 95912253 A EP95912253 A EP 95912253A EP 0750564 B1 EP0750564 B1 EP 0750564B1
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EP
European Patent Office
Prior art keywords
opening
packing
flat
composite
layer
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EP95912253A
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German (de)
French (fr)
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EP0750564A1 (en
Inventor
Hans-Josef Weiteder
Matthias Dammers
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SIG Combibloc GmbH and Co KG
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SIG Combibloc GmbH and Co KG
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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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/749—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being removed from the container after the opening

Definitions

  • the invention relates to a cuboid flat gable composite package, in particular an ear package with a central or corner seam, the composite having at least one carrier layer made of paper or cardboard, an adhesion promoter layer, an oxygen barrier layer, preferably made of aluminum, and a plastic coating on both sides made of polyethylene (PE), with an im Packing gable provided opening area, which forms a pouring hole after severing, with a pouring element having a reclosable, hinged closure lid, the flange surrounding the opening area being firmly connected to the packaging surface and the closure lid having a tube corresponding to the contour of the opening area, in the region of the opening area the carrier layer is left out and a method for producing such a flat gable composite package.
  • PE polyethylene
  • Rectangular flat gable composite packages are known in many copies. They are mainly used in the field of liquid packaging in connection with cold, cold sterile, hot and aseptic filling. As a rule, these packages cannot be closed again after opening them once.
  • the flat gable composite package described above is in need of improvement in several points. It is clear that for the purposes of storage and transportation it must be ensured that the tube connected to the sealing cap must not penetrate the material prematurely, ie before the pack is used for the first time.
  • a tab is provided which fixes the closure cover and the flange of the pouring element which surrounds the dividing line at a predetermined distance. It is only after removing this tab that it is possible to push the opening tube into the composite packaging material by pressing in the sealing cover. This in turn means that a certain minimum height of the known pouring element is mandatory. However, this is disadvantageous because of the stackability required for flat gable composite packs.
  • the present invention is based on the object of a cuboid flat gable composite package of the type described in the introduction and a method for the same To design and refine production so that the overall height of the pouring element used is reduced and a perfect pouring is reliably guaranteed.
  • the solution to the problem is that an opening aid for pulling out the carrier layer-free composite piece located in the region of the opening surface is applied to the package gable in the interior of the sealed opening area.
  • both the flange of the pouring element surrounding the opening surface and the opening aid provided in the interior of the opening surface are sealed.
  • the pouring element and opening aid consist of a correspondingly sealable material, such as polypropylene.
  • the opening aid consists of tear-resistant, sealable and ultrasonically weldable material and is welded to the layer composite in the interior of the opening area. It is particularly expedient if the ultrasonic weld seam is essentially adapted to the contour of the opening of the pouring element. In this way, after removing such an opening aid, the composite piece located inside the opening is completely removed. It is clear that the opening aid should not protrude over the area of the opening of the pouring element so that the later application of the pouring element on the packaging surface is not impaired.
  • the geometry of the opening aid is selected so that the package is initially torn open at a single point of cracking. This can be done, for example, in that the circumferential sealing or ultrasonic weld seam has a discontinuity shaped as a tip or the like, from which the tearing process begins.
  • the opening area is produced by means of laser beams. Due to the good controllability of this technology and the absolutely clean cutting edge, laser production is the preferred method. Nevertheless, in an alternative embodiment of the invention it is also possible for the opening area to be produced by stamping.
  • the opening aid has a base plate and a handle provided on the base plate for lifting the base plate. It is particularly advantageous that the base plate is made of flexible material and that an annular tab is provided as a handle. In this way, the packing composite material present in the area of the opening area below the base plate can be removed by simply pulling it out together with the base plate and ring tab.
  • the overall height of the pouring element can be significantly reduced compared to the prior art, since a circumferential and a predetermined distance between the closure lid and the flange of the pouring element is no longer necessary. Furthermore, it is reliably excluded that the problems described above can occur during the pouring process, since the part of the “residual composite” which forms the opening surface never reaches the inside of the package from the pouring opening, but is removed to the outside before the first use. For easier opening, at least the upper PE layer is severed along the circumferential edge of the opening area.
  • FIG. 1 shows a block-shaped flat gable composite package 1 according to the invention in its entirety in a perspective view.
  • this is an ear pack with Center or corner seam.
  • a pouring element 2 which is firmly connected to the flat gable composite pack 1, can also be seen, with a flange 3, which is firmly connected to the pack surface 1A and which has a closure cover 4.
  • Under the pouring element is an opening area 5 which cannot be seen in FIG. 1.
  • FIG. 2 shows a section of an edge K of the opening area 5.
  • the edge K of the opening area 5 shows that it is produced by means of laser beam cutting.
  • the individual layers of FIGS. 2, 3A and 3B are not designated in more detail, but are reproduced from top to bottom (outside inwards): PE layer, paper or cardboard layer, adhesion promoter layer, oxygen barrier layer, PE layer.
  • an opening aid 6 is now applied to the packing gable inside the opening surface 5, as can be seen in particular in FIG. 4.
  • the opening aid 6 has a base plate 7 and a handle 8 provided on the base plate 7 for lifting the base plate 7.
  • the handle 8 is designed as a ring plate.
  • FIGS. 5 to 7 show an embodiment of a pouring element according to the invention in the closed state.
  • the closure cover 4 is articulated on the vertical part of the flange 3 surrounding the dividing line. Furthermore, the closure cover 4 has a tube 9 corresponding to the shape of the opening surface 5, as can also be seen in FIGS. 4, 6 and 7.
  • Fig. 3b can also be seen that an opening aid, not shown, can also be arranged within the opening surface 5, which consists of tear-resistant, sealable and ultrasonically weldable material and is ultrasonically welded to the outer PE layer of the pack.
  • an ultrasonic weld seam is indicated by a dash-dot line.
  • the circumferential ultrasonic weld seam has a discontinuity, namely a tip S serving as a tearing point, which reaches up to the edge of the opening surface 5. In this way, it is reliably ensured that when the opening aid (not shown) is actuated, the opening area 5 is first torn open in the region of the tip S. From there, tearing on both sides takes place along the opening contour, in particular if - as indicated in FIGS. 3b and 2 - the upper PE layer has been separated along the opening contour by means of a laser beam L.
  • the opening aid 6 can consist of a piece of film, the external dimensions of which do not protrude beyond the contour of the opening area, in order not to impair the later application of the pouring element 2.
  • the closure cover 4 is raised and thus brought into the position of FIGS. 6 and 7. Subsequently, the opening aid 6 is raised by tearing the lower layers together with the handle 8 fastened to the base plate 7 together with the composite remnant formed by the opening surface 5 until a completely exposed pouring hole 10 is formed, as shown in FIG. 7.
  • the tube 9 can be anchored in the interior of the circumferential flange 3 by closing the closure cap 4 again.
  • a projection 11 is provided at the tip of the closure lid 4, which protrusion forms the pouring spout 12 formed by the pouring element 2 at least on the side opposite to the articulation, as can be seen in particular in FIG. 5.
  • the outer PE layer in the region of the edges of the opening area is destroyed, for example by laser radiation.
  • the opening area 5 still has four layers, but the circumferential dividing line only consists of an oxygen barrier layer and an inner PE layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Table Devices Or Equipment (AREA)

Abstract

PCT No. PCT/EP95/01021 Sec. 371 Date Nov. 5, 1996 Sec. 102(e) Date Nov. 5, 1996 PCT Filed Mar. 18, 1995 PCT Pub. No. WO95/25669 PCT Pub. Date Sep. 28, 1995The specification represents and describes a cuboid flat gable package, with the composite having at least one carrier layer made from paper or cardboard, a coupling layer, an oxygen barrier layer and a double-sided plastic coating made from polyethylene (PE). An opening area is provided in the package gable which which is adapted to be severed to form a pour opening pouring element is provided with a reclosable closing lid being hinged thereto in one piece and whose flange encompassing the opening area is rigidly connected to the package surface and whose closing lid is provided with a tubus corresponding to the shape of the opening area. In order to reduce the overall height of the pouring element used and to reliably ensure a perfect pouring it is provided that in the zone of the opening area the carrier layer is omitted and that an opening aid for pulling out the composite portion situated in the zone of the opening area is attached on the package gable in the interior of the opening area which has been sealed over. The specification further describes a process for producing such a flat gable composite package.

Description

Die Erfindung betrifft eine quaderförmige Flachgiebelverbundpackung, insbesondere Ohrenpackung mit Mittel- oder Ecknaht, wobei der Verbund wenigstens eine Trägerschicht aus Papier oder Karton, eine Haftvermittlerschicht, eine Sauerstoffsperrschicht, vorzugsweise aus Aluminium, und eine beidseitige Kunststoffbeschichtung aus Polyethylen (PE) aufweist, mit einer im Packungsgiebel vorgesehenen Öffnungsfläche, die nach dem Durchtrennen ein Gießloch bildet, mit einem einen wiederverschließbaren einstückig angelenkten Verschlußdeckel aufweisenden Ausgießelement, dessen die Öffnungsfläche umgebender Flansch fest mit der Packungsoberfläche verbunden ist und dessen Verschlußdeckel einen der Kontur der Öffnungsfläche entsprechenden Tubus aufweist, wobei im Bereich der Öffnungsfläche die Trägerschicht ausgespart ist sowie ein Verfahren zur Herstellung einer solchen Flachgiebelverbundpackung.The invention relates to a cuboid flat gable composite package, in particular an ear package with a central or corner seam, the composite having at least one carrier layer made of paper or cardboard, an adhesion promoter layer, an oxygen barrier layer, preferably made of aluminum, and a plastic coating on both sides made of polyethylene (PE), with an im Packing gable provided opening area, which forms a pouring hole after severing, with a pouring element having a reclosable, hinged closure lid, the flange surrounding the opening area being firmly connected to the packaging surface and the closure lid having a tube corresponding to the contour of the opening area, in the region of the opening area the carrier layer is left out and a method for producing such a flat gable composite package.

Quaderförmige Flachgiebelverbundpackungen sind in vielfacher Ausfertigung bekannt. Sie finden vornehmlich auf dem Gebiet der Flüssigkeitsverpackungen im Zusammenhang mit Kalt-, Kalt-Steril-, Heiß- und aseptischer-Füllung Verwendung. Diese Packungen lassen sich in der Regel nach einmaligem Öffnen nicht wieder verschließen.Rectangular flat gable composite packages are known in many copies. They are mainly used in the field of liquid packaging in connection with cold, cold sterile, hot and aseptic filling. As a rule, these packages cannot be closed again after opening them once.

Es ist daher bei Flachgiebelverbundpackungen der vorbeschriebenen Art bereits vorgeschlagen worden, im Packungsgiebel ein Ausgießelement anzuordnen, welches mit einem entsprechenden Verschlußdeckel ausgestattet ist (DE 38 08 303 A1). Dabei ist im Bereich der Kartonschicht und äußeren PE-Schicht eine umlaufende Trennlinie zur Schwächung des Giebelmaterials vorgesehen, in die zum Öffnen der Packung ein mit dem Verschlußdeckel einstückig verbundener und der Form der umlaufenden Trennlinie entsprechender Tubus in das Packungsmaterial hineingedrückt wird. Zum besseren Durchtrennen der geschwächten Trennlinie ist dazu die Unterkante des Tubus mit geeigneten mechanischen Öffnungsmitteln wie Schneiden od. dgl. vorgesehen.It has therefore already been proposed in flat gable composite packs of the type described above to arrange a pouring element in the pack gable which is equipped with a corresponding closure cover (DE 38 08 303 A1). It is in the area of the cardboard layer and outer PE layer is provided with a circumferential dividing line for weakening the gable material, into which a tube, which is connected in one piece to the closure cover and corresponds to the shape of the circumferential dividing line, is pressed into the packing material to open the pack. To better cut through the weakened dividing line, the lower edge of the tube is provided with suitable mechanical opening means such as cutting or the like.

Die zuvor beschriebene Flachgiebelverbundpackung ist jedoch in mehreren Punkten verbesserungswürdig. Es ist klar, daß zu Zwecken der Lagerung und des Transports gewährleistet sein muß, daß der mit dem Verschlußdeckel verbundene Tubus nicht vorzeitig, also vor dem erstmaligen Gebrauch der Packung, in das Material eindringen darf. Dazu ist beim gattungsbildenden Stand der Technik eine den Verschlußdeckel und den die Trennlinie umlaufenden Flansch des Ausgießelementes in vorbestimmtem Abstand fixierende Lasche vorgesehen. Erst nach dem Entfernen dieser Lasche ist es möglich, den Öffnungstubus durch Eindrücken des Verschlußdeckels in das Packungsverbundmaterial zu stoßen. Dies hat wiederum zur Folge, daß eine gewisse Mindesthöhe des bekannten Ausgießelementes zwingend vorgegeben ist. Dies ist jedoch wegen der bei Flachgiebelverbundpackungen geforderten Stapelbarkeit von Nachteil.However, the flat gable composite package described above is in need of improvement in several points. It is clear that for the purposes of storage and transportation it must be ensured that the tube connected to the sealing cap must not penetrate the material prematurely, ie before the pack is used for the first time. For this purpose, in the generic state of the art, a tab is provided which fixes the closure cover and the flange of the pouring element which surrounds the dividing line at a predetermined distance. It is only after removing this tab that it is possible to push the opening tube into the composite packaging material by pressing in the sealing cover. This in turn means that a certain minimum height of the known pouring element is mandatory. However, this is disadvantageous because of the stackability required for flat gable composite packs.

Des weiteren besteht die Möglichkeit, daß das vom Tubus herausgetrennte Packungsstück vollständig vom übrigen Packungsverbund gelöst wird und somit in die Flüssigkeit gelangt. Dies ist jedoch nicht hygienisch und kann außerdem zu Problemen beim Ausgießen führen, wenn das frei in der Flüssigkeit schwimmende Packungsverbundstück die Ausgießöffnung ganz oder teilweise "verstopft" oder gar durch die Ausgießöffnung in das Trinkgefäß gelangt.Furthermore, there is the possibility that the package piece separated from the tube is completely detached from the rest of the package assembly and thus gets into the liquid. However, this is not hygienic and can also lead to problems when pouring out if the package composite piece floating freely in the liquid "clogs" the pouring opening in whole or in part or even reaches the drinking vessel through the pouring opening.

Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine quaderförmige Flachgiebelverbundpackung der eingangs beschriebenen Art sowie ein Verfahren zu deren Herstellung so auszugestalten und weiterzubilden, daß die Gesamthöhe des verwendeten Ausgießelementes verringert wird und ein einwandfreies Ausgießen zuverlässig gewährleistet ist.Proceeding from this, the present invention is based on the object of a cuboid flat gable composite package of the type described in the introduction and a method for the same To design and refine production so that the overall height of the pouring element used is reduced and a perfect pouring is reliably guaranteed.

Bezüglich der Flachgiebelverbundpackung besteht die Lösung der Aufgabe darin, daß auf dem Packungsgiebel im Inneren der übersiegelten Öffnungsfläche eine Öffnungshilfe zum Herausziehen des im Bereich der Öffnungsfläche befindlichen trägerschichtfreien Verbundstückes aufgebracht ist.With regard to the flat gable composite package, the solution to the problem is that an opening aid for pulling out the carrier layer-free composite piece located in the region of the opening surface is applied to the package gable in the interior of the sealed opening area.

Bezüglich des Herstellungsverfahrens einer solchen Flachgiebelverbundpackung ist die Aufgabe durch die folgenden Schritte gelöst:

  • Herstellen der Öffnungsfläche in der Trägerschicht im Bereich der späteren Ausgießöffnung,
  • Aufbringen der äußeren PE-Schichten,
  • Aufkaschieren einer Aluminiumschicht,
  • Aufbringen der inneren PE-Schichten,
  • Rillen des Mehrschichtverbundes,
  • Vorfalten eines Packungszuschnittes,
  • Siegeln der Längsnähte zu einem schlauchartigen Packungsmantel,
  • Aufbringen der Öffnungshilfe auf der Öffnungsfläche sowie Faltung und Versiegelung des Packungsbodens,
  • Faltung und Siegelung des Packungsgiebels nach dem Befüllen der Packung und
  • Aufbringen des mit Verschlußdeckel versehenen Ausgießelementes auf den Öffnungsbereich der fertigen Packung.
With regard to the manufacturing process of such a flat gable composite package, the task is solved by the following steps:
  • Production of the opening area in the carrier layer in the area of the later pouring opening,
  • Application of the outer PE layers,
  • Laminating an aluminum layer,
  • Application of the inner PE layers,
  • Grooves of the multilayer composite,
  • Pre-folding a package blank,
  • Sealing the longitudinal seams into a tubular packing jacket,
  • Applying the opening aid to the opening area as well as folding and sealing the packaging base,
  • Folding and sealing the pack pediment after filling the pack and
  • Applying the pouring element provided with a closure lid to the opening area of the finished package.

Dadurch, daß die Packungsoberfläche mit einer PE-Schicht versehen ist, ist es besonders zweckmäßig, daß sowohl der die Öffnungsfläche umgebende Flansch des Ausgießelementes als auch die im Inneren der Öffnungsfläche vorgesehene Öffnungshilfe aufgesiegelt sind. Es versteht sich von selbst, daß Ausgießelement und Öffnungshilfe aus entsprechend siegelfähigem Material, wie beispielsweise Polypropylen bestehen.Because the packaging surface is provided with a PE layer, it is particularly expedient that both the flange of the pouring element surrounding the opening surface and the opening aid provided in the interior of the opening surface are sealed. It goes without saying that the pouring element and opening aid consist of a correspondingly sealable material, such as polypropylene.

In bevorzugter Weiterbildung der Erfindung besteht die Öffnungshilfe aus reißfestem, siegelfähigem und ultraschallschweißfähigem Material und ist mit dem Schichtenverbund im Inneren der Öffnungsfläche verschweißt. Dabei ist es besonders zweckmäßig, wenn die Ultraschallschweißnaht im wesentlichen der Kontur der Öffnung des Ausgießelementes angepaßt ist. Auf diese Weise erfolgt nach Abziehen einer solchen Öffnungshilfe ein vollständiges Entfernen des im Inneren der Öffnung befindlichen Verbundstückes. Es ist klar, daß die Öffnungshilfe nicht über den Bereich der Öffnung des Ausgießelementes heraustragen soll, damit die spätere Applikation des Ausgießelementes auf der Packungsoberfläche nicht beeinträchtigt wird.In a preferred development of the invention, the opening aid consists of tear-resistant, sealable and ultrasonically weldable material and is welded to the layer composite in the interior of the opening area. It is particularly expedient if the ultrasonic weld seam is essentially adapted to the contour of the opening of the pouring element. In this way, after removing such an opening aid, the composite piece located inside the opening is completely removed. It is clear that the opening aid should not protrude over the area of the opening of the pouring element so that the later application of the pouring element on the packaging surface is not impaired.

Sowohl bei aufgesiegelter Öffnungshilfe als auch bei ultraschallverschweißter Öffnungshilfe ist es von besonderem Vorteil, daß die Geomtrie der Öffnungshilfe so gewählt ist, daß das Aufreißen der Packung zunächst punktuell an einer einzigen Anrißstelle erfolgt. Dies kann beispielsweise dadurch geschehen, daß die umlaufende Siegel- oder Ultraschallschweißnaht eine als Spitze od. dgl. ausgeformte Unstetigkeit aufweist, von der aus der Aufreißvorgang beginnt.Both with sealed opening aid and with ultrasonically welded opening aid, it is particularly advantageous that the geometry of the opening aid is selected so that the package is initially torn open at a single point of cracking. This can be done, for example, in that the circumferential sealing or ultrasonic weld seam has a discontinuity shaped as a tip or the like, from which the tearing process begins.

Eine weitere Lehre der Erfindung sieht vor, daß die Öffnungsfläche mittels Laserstrahlen hergestellt ist. Die Herstellung mittels Laser ist aufgrund der guten Beherrschbarkeit dieser Technik und absolut sauberen Schnittkante als bevorzugtes Verfahren anzusehen. Dennoch ist es in einer alternativen Ausgestaltung der Erfindung auch möglich, daß die Öffnungsfläche durch Stanzen hergestellt ist.Another teaching of the invention provides that the opening area is produced by means of laser beams. Due to the good controllability of this technology and the absolutely clean cutting edge, laser production is the preferred method. Nevertheless, in an alternative embodiment of the invention it is also possible for the opening area to be produced by stamping.

In weiterer Ausgestaltung der Erfindung weist die Öffnungshilfe eine Basisplatte und eine an der Basisplatte vorgesehene Handhabe zum Anheben der Basisplatte auf. Dabei ist es besonders vorteilhaft, daß die Basisplatte aus flexiblem Material besteht und daß als Handhabe eine Ringlasche vorgesehen ist. Auf diese Weise läßt sich das im Bereich der Öffnungsfläche unterhalb der Basisplatte vorhandene Packungsverbundmaterial durch einfaches Herausziehen gemeinsam mit Basisplatte und Ringlasche entfernen.In a further embodiment of the invention, the opening aid has a base plate and a handle provided on the base plate for lifting the base plate. It is particularly advantageous that the base plate is made of flexible material and that an annular tab is provided as a handle. In this way, the packing composite material present in the area of the opening area below the base plate can be removed by simply pulling it out together with the base plate and ring tab.

Es ist klar, daß erfindungsgemäß die Bauhöhe des Ausgießelementes gegenüber dem Stand der Technik deutlich verringert werden kann, da eine umlaufende und einen vorgegebenen Abstand zwischen Verschlußdeckel und Flansch des Ausgießelementes bewirkende Verschlußlasche nicht mehr erforderlich ist. Des weiteren ist zuverlässig ausgeschlossen, daß die oben geschilderten Probleme beim Ausgießvorgang auftreten können, da der die Öffnungsfläche bildende Teil des "Restverbundes" aus der Ausgießöffnung niemals in das Packungsinnere gelangt, sondern vor dem erstmaligen Gebrauch nach außen hin entfernt wird. Zur leichteren Öffnung ist wenigstens die obere PE-Schicht entlang der umlaufenden Kante der Öffnungsfläche durchtrennt.It is clear that according to the invention the overall height of the pouring element can be significantly reduced compared to the prior art, since a circumferential and a predetermined distance between the closure lid and the flange of the pouring element is no longer necessary. Furthermore, it is reliably excluded that the problems described above can occur during the pouring process, since the part of the “residual composite” which forms the opening surface never reaches the inside of the package from the pouring opening, but is removed to the outside before the first use. For easier opening, at least the upper PE layer is severed along the circumferential edge of the opening area.

Die Erfindung wird nachfolgend anhand einer lediglich ein Ausführungbeispiel darstellenden Zeichnung näher erläutert. In der Zeichnung zeigen

Fig. 1
eine erfindungsgemäße quaderförmige Flachgiebelverbundpackung in perspektivischer Ansicht,
Fig. 2
einen Ausschnitt der erfindungsgemäßen Flachgiebelverbundpackung im Bereich einer im Giebel angeordneten Öffnungsfläche in Schnittdarstellung entlang der Linie V-V aus Fig. 1,
Fig. 3A
einen Ausschnitt der erfindungsgemäßen Flachgiebelverbundpackung im Bereich der Öffnungsfläche aus Fig. 2 in Schnittdarstellung entlang der Linie III-III aus Fig. 3B,
Fig. 3B
den Bereich der Ausgießöffnung der Flachgiebelverbundpackung aus Fig. 3A in Draufsicht,
Fig. 4
die erfindungsgemäße Flachgiebelpackung mit aufgeklapptem Ausgießelement in Draufsicht,
Fig. 5
einen Ausschnitt der erfindungsgemäßen Flachgiebelverbundpackung im Querschnitt entlang der Linie V-V in Fig. 1,
Fig. 6
den Ausschnitt gemäß Fig. 5 mit geöffnetem Ausgießelement und teilweise geöffnetem Gießloch und
Fig. 7
den Ausschnitt gemäß Fig. 5 mit geöffnetem Ausgießelement und vollständig geöffnetem Gießloch.
The invention is explained in more detail below with the aid of a drawing which merely shows an exemplary embodiment. Show in the drawing
Fig. 1
a cuboid flat gable composite package according to the invention in perspective view,
Fig. 2
1 shows a section of the flat gable composite package according to the invention in the region of an opening area arranged in the gable in a sectional view along the line VV from FIG. 1,
Figure 3A
3 shows a section of the flat gable composite package according to the invention in the region of the opening area from FIG. 2 in a sectional illustration along the line III-III from FIG. 3B,
Figure 3B
the area of the pouring opening of the flat gable composite package from FIG. 3A in plan view,
Fig. 4
the flat gable package according to the invention with opened pouring element in plan view,
Fig. 5
1 shows a section of the flat gable composite package according to the invention in cross section along the line VV in FIG. 1,
Fig. 6
5 with the pouring element open and the pouring hole partially open and
Fig. 7
5 with the pouring element open and the pouring hole fully open.

In Fig. 1 ist in perspektivischer Darstellung eine erfindungsgemäße quaderförmige Flachgiebelverbundpackung 1 in ihrer Gesamtheit dargestellt. Dabei handelt es sich beim dargestellten Ausführungsbeispiel um eine Ohrenpackung mit Mittel- oder Ecknaht. Zu erkennen ist weiterhin ein fest mit der Flachgiebelverbundpackung 1 verbundenes Ausgießelement 2, mit einem Flansch 3, der fest mit der Packungsoberfläche 1A verbunden ist und der einen Verschlußdeckel 4 aufweist. Unter dem Ausgießelement ist eine in Fig. 1 nicht erkennbare Öffnungsfläche 5.1 shows a block-shaped flat gable composite package 1 according to the invention in its entirety in a perspective view. In the illustrated embodiment, this is an ear pack with Center or corner seam. A pouring element 2, which is firmly connected to the flat gable composite pack 1, can also be seen, with a flange 3, which is firmly connected to the pack surface 1A and which has a closure cover 4. Under the pouring element is an opening area 5 which cannot be seen in FIG. 1.

Die Fig. 2, 3A und 3B zeigen nun verschiedene Ausgestaltungen der zuvor genannten Öffnungsfläche 5. Dabei stellt Fig. 2 einen Schnitt einer Kante K der Öffnungsfläche 5 dar. An der Kante K der Öffnungsfläche 5 ist erkennbar, daß sie mittels Laserstrahlschneiden hergestellt ist. Die einzelnen Schichten der Fig. 2, 3A und 3B sind nicht näher bezeichnet, jedoch nachfolgend von oben bis unten (außen nach innen) wiedergegeben: PE-Schicht, Papier- oder Kartonschicht, Haftvermittlerschicht, Sauerstoffsperrschicht, PE-Schicht.2, 3A and 3B now show different configurations of the aforementioned opening area 5. In this case, FIG. 2 shows a section of an edge K of the opening area 5. The edge K of the opening area 5 shows that it is produced by means of laser beam cutting. The individual layers of FIGS. 2, 3A and 3B are not designated in more detail, but are reproduced from top to bottom (outside inwards): PE layer, paper or cardboard layer, adhesion promoter layer, oxygen barrier layer, PE layer.

Erfindungsgemäß ist nun auf dem Packungsgiebel im Inneren der Öffnungsfläche 5 eine Öffnungshilfe 6 aufgebracht, wie insbesondere Fig. 4 zu entnehmen ist. Im dargestellten und insoweit bevorzugten Ausführungsbeispiel weist die Öffnungshilfe 6 eine Basisplatte 7 und eine an der Basisplatte 7 vorgesehene Handhabe 8 zum Anheben der Basisplatte 7 auf. In bevorzugter Ausgestaltung der Erfindung ist die Handhabe 8 als Ringlasche ausgebildet.According to the invention, an opening aid 6 is now applied to the packing gable inside the opening surface 5, as can be seen in particular in FIG. 4. In the illustrated and preferred embodiment, the opening aid 6 has a base plate 7 and a handle 8 provided on the base plate 7 for lifting the base plate 7. In a preferred embodiment of the invention, the handle 8 is designed as a ring plate.

Zur besseren Darstellung ist in den Fig. 5 bis 7 das erfindungsgemäß verwendete Ausgießelement 2 im Längsschnitt dargestellt. Fig. 5 zeigt ein Ausführungsbeispiel eines erfindungsgemäßen Ausgießelementes in geschlossenem Zustand. Dabei ist der Verschlußdeckel 4 gelenkig an dem die Trennlinie umgebenden senkrechten Teil des Flansches 3 angeordnet. Ferner weist der Verschlußdeckel 4 einen der Form der Öffnungsfläche 5 entsprechenden Tubus 9 auf, wie auch Fig. 4, 6 und 7 zu entnehmen ist.For better illustration, the pouring element 2 used according to the invention is shown in longitudinal section in FIGS. 5 to 7. Fig. 5 shows an embodiment of a pouring element according to the invention in the closed state. The closure cover 4 is articulated on the vertical part of the flange 3 surrounding the dividing line. Furthermore, the closure cover 4 has a tube 9 corresponding to the shape of the opening surface 5, as can also be seen in FIGS. 4, 6 and 7.

Fig. 3b ist weiterhin zu entnehmen, daß innerhalb der Öffnungsfläche 5 auch eine nicht dargestellte Öffnungshilfe angeordnet sein kann, welche aus reißfestem, siegelfähigem und ultraschallschweißfähigem Material besteht und mit der äußeren PE-Schicht der Packung ultraschallverschweißt ist. Eine solche Ultraschallschweißnaht ist mit U strichpunktiert angedeutet. Es ist erkennbar, daß die umlaufende Ultraschallschweißnaht eine Unstetigkeit, nämlich eine als Anrißstelle dienende Spitze S aufweist, welche bis an den Rand der Öffnungsfläche 5 heranreicht. Auf diese Weise ist zuverlässig gewährleistet, daß beim Betätigen der nicht dargestellten Öffnungshilfe zunächst ein Aufreißen der Öffnungsfläche 5 im Bereich der Spitze S erfolgt. Von dort erfolgt dann ein beidseitiges Aufreißen entlang der Öffnungskontur, insbesondere wenn - wie in den Fig. 3b und 2 angedeutet - entlang der Öffnungskontur die obere PE-Schicht mittels eines Laserstrahles L aufgetrennt worden ist.Fig. 3b can also be seen that an opening aid, not shown, can also be arranged within the opening surface 5, which consists of tear-resistant, sealable and ultrasonically weldable material and is ultrasonically welded to the outer PE layer of the pack. Such an ultrasonic weld seam is indicated by a dash-dot line. It can be seen that the circumferential ultrasonic weld seam has a discontinuity, namely a tip S serving as a tearing point, which reaches up to the edge of the opening surface 5. In this way, it is reliably ensured that when the opening aid (not shown) is actuated, the opening area 5 is first torn open in the region of the tip S. From there, tearing on both sides takes place along the opening contour, in particular if - as indicated in FIGS. 3b and 2 - the upper PE layer has been separated along the opening contour by means of a laser beam L.

Bei der Variante mit Ultraschallschweißnaht kann die Öffnungshilfe 6 aus einem Stück Folie bestehen, dessen Außenmaße die Kontur der Öffnungsfläche nicht überragen, um die spätere Applikation des Ausgießelementes 2 nicht zu beeinträchtigen.In the variant with an ultrasonic welding seam, the opening aid 6 can consist of a piece of film, the external dimensions of which do not protrude beyond the contour of the opening area, in order not to impair the later application of the pouring element 2.

Zum Öffnen der erfindungsgemäßen Flachgiebelverbundpackung wird der Verschlußdeckel 4 angehoben und damit in die Stellung der Fig. 6 und 7 gebracht. Anschließend wird die Öffnungshilfe 6 mittels der an der Basisplatte 7 befestigten Handhabe 8 gemeinsam mit dem von der Öffnungsfläche 5 gebildeten Verbundreststück durch Zerreißen der unteren Schichten angehoben, bis ein vollständig freigelegtes Gießloch 10 entsteht, wie es in Fig. 7 dargestellt ist. Durch erneutes Verschließen des Verschlußdeckels 4 kann der Tubus 9 im Inneren des umlaufenden Flansches 3 verankert werden. Zur besseren Abdichtung ist dazu ein an der Spitze des Verschlußdeckels 4 vorgesehener Vorsprung 11 vorgesehen, welcher die vom Ausgießelement 2 gebildeten Gießtülle 12 wenigstens auf der der Anlenkung entgegengesetzten Seite umgreift, wie insbesondere Fig. 5 zu entnehmen ist.To open the flat gable composite package according to the invention, the closure cover 4 is raised and thus brought into the position of FIGS. 6 and 7. Subsequently, the opening aid 6 is raised by tearing the lower layers together with the handle 8 fastened to the base plate 7 together with the composite remnant formed by the opening surface 5 until a completely exposed pouring hole 10 is formed, as shown in FIG. 7. The tube 9 can be anchored in the interior of the circumferential flange 3 by closing the closure cap 4 again. For better sealing, a projection 11 is provided at the tip of the closure lid 4, which protrusion forms the pouring spout 12 formed by the pouring element 2 at least on the side opposite to the articulation, as can be seen in particular in FIG. 5.

Schließlich ist nach einer weiteren Lehre der Erfindung die äußere PE-Schicht im Bereich der Kanten der Öffnungsfläche, beispielsweise durch Laserstrahlung zerstört. Es ist jedoch auch möglich durch entsprechende Verstärkung der Intensität der Laserstrahlung L auch noch die Haftvermittlerschicht zu zerstören, wie in Fig. 2 strichpunktiert angedeutet ist. In diesem Fall weist die Öffnungsfläche 5 zwar noch vier Schichten auf, die umlaufende Trennlinie besteht jedoch nur noch aus Sauerstoffsperrschicht und innerer PE-Schicht.Finally, according to a further teaching of the invention, the outer PE layer in the region of the edges of the opening area is destroyed, for example by laser radiation. However, it is also possible to destroy the adhesion promoter layer by correspondingly increasing the intensity of the laser radiation L, as is indicated by dash-dotted lines in FIG. 2. In this case, the opening area 5 still has four layers, but the circumferential dividing line only consists of an oxygen barrier layer and an inner PE layer.

Claims (12)

  1. A cuboid flat-gabled composite packing, in particular ear-type packing with middle seam or corner seam in which the composite material comprises at least a carrier layer of paper or cardboard, a bonding agent layer, an oxygen barrier layer, preferably made of aluminium, and a plastic layer on both sides made of polyethylene (PE), with an opening surface (5) provided in the packing gable which, after being torn through, forms a pouring aperture; and with a pouring element (2) comprising a re-closeable hinged sealing cap (4) and linkage made in one piece; the flange (3) surrounding the opening surface of this pouring element being rigidly connected to the packing surface, and its sealing cap comprising a tube (9) contoured according to the opening aperture, whereby in the area of the opening surface (5), the carrier layer is left open,
    characterized in that at the packing gable (1A) in the interior of the sealed-over opening surface (5) an opening surface (6) is provided for pulling out the composite piece, free of carrier layer, located at the opening surface.
  2. A flat-gabled composite packing according to claim 1,
    characterized in that the opening aid (6) is sealed onto the exterior polyethylene layer.
  3. A flat-gabled composite packing according to claim 1,
    characterized in that the opening aid (6) is made from tear-resistant sealable and ultrasonically weldable material and is ultrasonically welded to the layered composite material in the area of the opening surface.
  4. A flat-gabled composite packing according to claim 3,
    characterized in that the ultrasonic welding seam essentially follows the contour of the aperture of the pouring element (2).
  5. A flat-gabled composite packing according to one of claims 1 to 4,
    characterized in that the opening aid (6) is placed onto the exterior polyethylene layer in such a way that tearing open the packing at first takes place at one point at an initial tearing location.
  6. A flat-gabled composite packing according to one of claims 1 to 5,
    characterized in that the opening of the opening surface (5) is made by press cutting.
  7. A flat-gabled composite packing according to one of claims 1 to 5,
    characterized in that the opening of the opening surface (5) is made by laser.
  8. A flat-gabled composite packing according to one of claims 1 to 7,
    characterized in that the opening aid (6) comprises a base plate (7) and a pulling tab (8) provided at the base plate (7) for lifting the base plate (7).
  9. A flat-gabled composite packing according to claim 8,
    characterized by the base plate (7) comprising flexible material.
  10. A flat-gabled composite packing according to claim 8 or 9,
    characterized in that a ring-pull is provided as a pulling tab.
  11. A flat-gabled composite packing according to one of claims 1 to 10,
    characterized in that at least the upper polyethylene layer is perforated along the surrounding edge of the opening surface.
  12. A process for producing a cuboid flat-gabled composite packing according to one of claims 1 to 11,
    characterized by the following steps:
    - production of the opening surface in the carrier layer in the area where subsequently the pouring aperture will be located,
    - application of the exterior polyethylene layers,
    - laminating of an aluminium layer,
    - application of the interior polyethylene layers,
    - grooving of the multilayer composite material,
    - prefolding of a packing cutout,
    - sealing of the longitudinal seams to a tubular packing sleeve,
    - application of the opening aid to the opening surface as well as folding and sealing of the bottom of the packing,
    - folding and sealing of the packing gable after filling of the packing, and
    - application of the pouring element provided with a sealing cap on the opening area of the completed packing.
EP95912253A 1994-03-23 1995-03-18 Cuboid flat-gabled composite packing and process for producing it Expired - Lifetime EP0750564B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4409946A DE4409946A1 (en) 1994-03-23 1994-03-23 Cuboid flat gable composite packaging and method for its production
DE4409946 1994-03-23
PCT/EP1995/001021 WO1995025669A1 (en) 1994-03-23 1995-03-18 Cuboid flat-gabled composite packing and process for producing it

Publications (2)

Publication Number Publication Date
EP0750564A1 EP0750564A1 (en) 1997-01-02
EP0750564B1 true EP0750564B1 (en) 1997-12-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95912253A Expired - Lifetime EP0750564B1 (en) 1994-03-23 1995-03-18 Cuboid flat-gabled composite packing and process for producing it

Country Status (13)

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US (1) US5875958A (en)
EP (1) EP0750564B1 (en)
CN (1) CN1058239C (en)
AT (1) ATE160747T1 (en)
CA (1) CA2186233A1 (en)
CZ (1) CZ287730B6 (en)
DE (2) DE4409946A1 (en)
ES (1) ES2109817T3 (en)
HK (1) HK1016413A1 (en)
HU (1) HU217461B (en)
PL (1) PL178532B1 (en)
TW (1) TW290513B (en)
WO (1) WO1995025669A1 (en)

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Also Published As

Publication number Publication date
CZ276396A3 (en) 1997-03-12
CN1058239C (en) 2000-11-08
CA2186233A1 (en) 1995-09-28
CZ287730B6 (en) 2001-01-17
ATE160747T1 (en) 1997-12-15
DE59501077D1 (en) 1998-01-15
HU9602585D0 (en) 1996-11-28
WO1995025669A1 (en) 1995-09-28
HK1016413A1 (en) 1999-10-29
CN1146753A (en) 1997-04-02
DE4409946A1 (en) 1995-09-28
EP0750564A1 (en) 1997-01-02
PL178532B1 (en) 2000-05-31
ES2109817T3 (en) 1998-01-16
MX9604254A (en) 1997-12-31
HU217461B (en) 2000-01-28
TW290513B (en) 1996-11-11
PL317188A1 (en) 1997-03-17
US5875958A (en) 1999-03-02
HUT74819A (en) 1997-02-28

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