EP2607264B1 - Drinks container with improved straw insertion opening - Google Patents

Drinks container with improved straw insertion opening Download PDF

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Publication number
EP2607264B1
EP2607264B1 EP12004851.7A EP12004851A EP2607264B1 EP 2607264 B1 EP2607264 B1 EP 2607264B1 EP 12004851 A EP12004851 A EP 12004851A EP 2607264 B1 EP2607264 B1 EP 2607264B1
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EP
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Prior art keywords
beverage container
puncture site
layer
foil
packaging
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EP12004851.7A
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German (de)
French (fr)
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EP2607264A1 (en
Inventor
Franz Driessen
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Riha Wesergold Getranke & Co KG GmbH
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Riha Wesergold Getranke & Co KG GmbH
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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
    • B65D2203/00—Decoration means, markings, information elements, contents indicators
    • B65D2203/02—Labels

Definitions

  • the present invention generally relates to a beverage container or a beverage bag (also referred to as beverage stand-up pouch or Pouch pack), which is configured for a filling amount of 150 to 300 ml (preferably 200 ml).
  • the beverage container is generally used for the packaging of beverages, preferably juices and fruit juice drinks.
  • the beverage in the beverage container is usually drunk with a drinking straw, which is either supplied separately or removably adhered, for example, to the back of the beverage container.
  • the drinking straw is pierced and introduced at the front of the beverage container through a puncture site provided for this purpose in the beverage container.
  • a beverage stand bag is known in which in the packaging material (ie packaging film) of the beverage bag a fully stamped by the packaging material puncture hole (drinking straw) is formed, which is underlaid for the purpose of sealing the puncture hole on the inside of the package by a PE strip.
  • This puncture hole in the packaging film of the beverage bag is already punched before the process of the filling process.
  • the PE strip also before the filling process, attached to the inside of the package to close the puncture hole from the inside.
  • the drinking straw hole is opened by inserting a supplied drinking straw into the already punched-in puncture hole and then piercing the PE strip under the puncture hole with the tip of the drinking straw.
  • the PE strip also causes after the piercing of the inner PE strip by means of the drinking straw and when tipping the beverage stand bag (or if the bag is applied too much pressure) leak at the gap between the packaging film and the drinking straw no drink can.
  • the proposed solution has some disadvantages. Since the packaging film already by the punched drinking straw hole is opened, damage to the beverage bag in the region of the puncture hole - for example, by a needle - not or hardly visible, so that the originality of the packaging is not sufficiently secured. Furthermore, adhering the PE strip to the inside of the packaging film requires a further operation for producing the packaging or packaging material of the beverage bag, which causes additional costs. The PE strip adhered under the punched-out drinking straw hole also does not provide adequate protection of the beverage (as compared to a completely closed packaging film) due to oxygen migration through the material of the PE strip itself and due to leaks at the juncture between the PE layer. Strip and the inside of the packaging film. Finally, it can not be ruled out that the PE strip separates from the packaging material in whole or in part, which can not be perceived by the user. In this case, air or contaminants may enter the interior of the bag, spoiling the beverage.
  • the WO 98/14317 A1 discloses a laminate having a three-layered construction, namely an inner layer and an outer layer of a polymer and a middle layer of cardboard.
  • the WO 97/46459 A1 describes a beverage sachet made of a packaging material with a multilayer structure.
  • a puncture site is formed by burning away a part of the outer layer by means of a laser.
  • the DE 1 009 445 B discloses a packaging container of a flexible film material having a two-layer structure of two plastic films.
  • the present invention is therefore generally based on the object to overcome the above-described disadvantages of the prior art.
  • the basic idea of the invention is based on the fact that the packaging material or the packaging film of the beverage container according to the invention remains intact and that the drinking straw hole is produced only by piercing the drinking straw into the packaging material. This leaves the packaging material up unharmed for use so that no oxygen can penetrate into the beverage container.
  • the present invention is generally based on the fact that the outer layer (and optionally one or more middle layers) of the multilayer packaging material (packaging film) is completely removed in the region of the puncture site, whereby the packaging film in the region of the puncture site has a smaller thickness, which by the inner Layer (and optionally by a or several remaining middle layers).
  • the drinking straw in the region of the puncture site due to the reduced thickness of the packaging film
  • the layer or layers located below the area of the puncture site ie under the removed outer layer and under the optionally removed middle layer (s)
  • the consumer By removing the outer layer (s) of the packaging material of the beverage container according to the invention in the region of the puncture site, the consumer is given a mark by which the consumer receives an indication of the puncture hole.
  • this marking is formed by the different properties of the material of the outer layer outside the puncture site and the material of the visible from the outside middle or inner layer in the region of the puncture site.
  • the marking ensures that the packaging material is pierced in place in the area where the outer (and optionally one or more of the middle layer (s)) of the packaging material is removed.
  • the removal of the outer (and optionally one or more of the middle layer (s)) of the packaging material in the region of the puncture site is preferably achieved in that the outer layer (and optionally the middle layer (s)) of the packaging material by means of a laser or Laser beam is removed.
  • the intensity of the laser beam or laser light, the size of the selected focal point and / or the duration of processing is critical to the extent of removal of the layer (s) of the packaging material at the desired puncture hole.
  • the material of the packaging or the outer layer (and optionally the middle layer (s)) of the packaging material is removed so that the underlying layer or layers that should remain to be damaged, to ensure the originality of the packaging and thus the protection of the drink.
  • the outer layer of the packaging material in the region of the puncture site is completely removed by the laser beam, leaving the inner layer and, if present, the middle layer intact.
  • the packaging film is composed of two or three layers, namely an inner layer, an outer layer and optionally a middle layer located between the inner and outer layers.
  • the packaging film is composed of two or three layers, namely an inner layer, an outer layer and optionally a middle layer located between the inner and outer layers.
  • the outer layer is removed in the area of the puncture site.
  • the middle layer can be removed.
  • the outer layer of the packaging material is preferably made of polyethylene (PE) or polyethylene terephthalate (PET).
  • PE polyethylene
  • PET polyethylene terephthalate
  • the laser cuts this outer layer of packaging material completely (i.e., at least to the underlying middle or inner layer).
  • PE or PET is very suitable as a material for the outer layer, since it is well burned by the laser beam.
  • other suitable materials suitable for laser processing may be used.
  • the burning PE or PET material can be sucked off during the laser processing.
  • the inner layer (and optionally the optionally present middle layer) is pierced, in which case the gap between the drinking straw and the puncture hole formed in the packaging material is sealed. This seal is made by that Place the material of the inner layer (and the optional middle layer) close to the outer surface of the drinking straw.
  • the puncture site created by laser processing i.e., the area where the outer layer and optionally the middle layer are removed
  • the puncture site created by laser processing has a diameter of about 4 mm, preferably 5 mm, but may also have a size of about 3 mm to about 7 mm.
  • An advantage of the laser processing is that the production process in the production of the beverage container according to the invention can be better controlled. Due to the fine adjustment via current or voltage supply, the burning of the PE or PET material can be controlled very well. As a result, the reproducibility in the production of the packaging of the beverage container is improved.
  • the exposed surface of the inner layer may be provided with a structure in the form of a sun (ie, light straight lines or depressions running radially outward from a central point).
  • a structure in the form of a sun ie, light straight lines or depressions running radially outward from a central point.
  • polyethylene, polyethylene terephthalate, polypropylene and various copolymers are suitable.
  • the thin material between about 60 and 100 microns allows easy insertion of the drinking straw, the piercing is significantly facilitated by the removal of the outer (and optionally middle) layer.
  • the use of a multilayer composite film of two or three layers has proved to be particularly advantageous.
  • An advantage of such composite films is that they are substantially impermeable to oxygen.
  • the composite film used is preferably made of an outer PE or PET layer and an inner aluminum layer. Particularly advantageous is a composite film of three layers has been found, which comprises an outer layer of PET, a middle layer of aluminum and an inner layer of PE.
  • a further optimization is achieved by the fact that the straw no longer has to be centered in the middle of the puncture site during piercing. Rather, the alignment of the drinking straw tip is equalized to the piercing opening.
  • FIG. 1 An embodiment of the beverage container according to the invention will be described below.
  • the beverage container 1 is produced in a known manner by a multilayer packaging film 2.
  • the film In the lower region of the container 1, the film is folded twice to form the bottom region of the container in a likewise known manner.
  • the two layers of the packaging film are welded together, glued or otherwise connected together.
  • the container 1 has a height h of between about 140 mm and 160 mm and a width b of between about 90 mm and 120 mm.
  • the height h is about 150 mm and the width b is about 110 mm. Height and width, however, depend on the desired capacity and can vary accordingly.
  • a puncture site 3 formed by partially removing the outer layer of the multi-layered packaging film, which is made by processing with the aid of a laser beam.
  • FIG. 2 shows a section through the packaging film 2 (composite material) of the beverage container 1 of the present invention.
  • the film 2 consists of three layers 4, 5 and 6.
  • the outer layer 4 is preferably made of PET and preferably has a thickness of about 12 microns
  • the middle layer 5 is preferably made of aluminum and preferably has a thickness of about 9 microns
  • the inner layer 6 is preferably made of PE and preferably has a thickness of about 76 ⁇ m.
  • the PET material of the outer layer is completely burned away at a point 3 by means of the laser beam to the middle layer 5.
  • the middle layer 5 is burned away in the region of the puncture site 3 either partially or completely until reaching the inner layer 6.
  • a structure may be formed in this middle layer 5.
  • These Structure may have a central point with a diameter of preferably about 2 mm. From this central point extend several lines which are cut (like the central point) by means of a laser beam into the middle layer 5 of the packaging material (packaging film). For example, 6, 8, or 10 lines may extend radially outward from the central point. This cut lines formed by a laser beam.
  • the packaging film is very easily punctured, since the middle layer 5 of the film has a reduced thickness at the central point and at the radial lines.
  • the puncture hole is defined widened outwards. This widening of the puncture hole is facilitated by the radial cutting lines, since the middle layer 5 of the packaging film 2 also has a reduced thickness at these lines.
  • the outer layer 4 of the packaging film 2 is preferably made of PET and the middle layer 5 is preferably made of aluminum, the consumer can see the puncture site 3 with the naked eye very well, since the exposed aluminum surface of the middle layer 5 in the region of the puncture site optically very clearly different from the PET surface of the outer layer 4 surrounding the puncture site.

Description

Die vorliegende Erfindung betrifft allgemein einen Getränkebehälter bzw. einen Getränkebeutel (auch als Getränkestandbeutel oder Pouch-Packung bezeichnet), der für eine Füllmenge von 150 bis 300 ml (vorzugsweise 200 ml) ausgestaltet ist. Der Getränkebehälter dient allgemein zur Verpackung von Getränken, vorzugsweise Säfte und Fruchtsaftgetränke. Das Getränk in dem Getränkebehälter wird üblicherweise mit einem Trinkhalm getrunken, der entweder separat mitgeliefert wird oder abnehmbar beispielsweise an der Rückseite des Getränkebehälters anhaftet. Üblicherweise wird der Trinkhalm an der Vorderseite des Getränkebehälters durch eine dafür vorgesehene Einstichstelle in den Getränkebehälter eingestochen und eingeführt.The present invention generally relates to a beverage container or a beverage bag (also referred to as beverage stand-up pouch or Pouch pack), which is configured for a filling amount of 150 to 300 ml (preferably 200 ml). The beverage container is generally used for the packaging of beverages, preferably juices and fruit juice drinks. The beverage in the beverage container is usually drunk with a drinking straw, which is either supplied separately or removably adhered, for example, to the back of the beverage container. Usually, the drinking straw is pierced and introduced at the front of the beverage container through a puncture site provided for this purpose in the beverage container.

Aus der EP 0 600 502 A1 ist ein Getränkestandbeutel bekannt, bei dem in dem Verpackungsmaterial (d.h. Verpackungsfolie) des Getränkebeutels ein vollständig durch das Verpackungsmaterial gestanztes Einstichloch (Trinkhalmloch) ausgebildet ist, das zwecks Abdichtung des Einstichlochs auf der Innenseite der Verpackung durch einen PE-Streifen unterlegt ist. Dieses Einstichloch in der Verpackungsfolie des Getränkebeutels wird bereits vor dem Verfahren des Abfüllprozesses eingestanzt. Anschließend wird der PE-Streifen, ebenfalls vor dem Abfüllprozess, an der Innenseite der Verpackung befestigt, um das Einstichloch von Innen zu verschließen. Zum Trinken des Getränks wird das Trinkhalmloch geöffnet, indem ein mitgelieferter Trinkhalm in das bereits eingestanzte Einstichloch eingesetzt und dann der unter dem Einstichloch vorhandene PE-Streifen mit der Spitze des Trinkhalms durchstochen wird. Durch den PE-Streifen wird ebenfalls bewirkt, dass nach dem Durchstechen des innenliegenden PE-Streifens mittels des Trinkhalms und beim Umkippen des Getränkestandbeutels (oder wenn auf den Beutel ein zu starker Druck aufgebracht wird) am Spalt zwischen der Verpackungsfolie und dem Trinkhalm kein Getränk auslaufen kann.From the EP 0 600 502 A1 is a beverage stand bag is known in which in the packaging material (ie packaging film) of the beverage bag a fully stamped by the packaging material puncture hole (drinking straw) is formed, which is underlaid for the purpose of sealing the puncture hole on the inside of the package by a PE strip. This puncture hole in the packaging film of the beverage bag is already punched before the process of the filling process. Subsequently, the PE strip, also before the filling process, attached to the inside of the package to close the puncture hole from the inside. To drink the drink, the drinking straw hole is opened by inserting a supplied drinking straw into the already punched-in puncture hole and then piercing the PE strip under the puncture hole with the tip of the drinking straw. The PE strip also causes after the piercing of the inner PE strip by means of the drinking straw and when tipping the beverage stand bag (or if the bag is applied too much pressure) leak at the gap between the packaging film and the drinking straw no drink can.

Die in der EP 0 600 502 A1 vorgeschlagene Lösung hat jedoch einige Nachteile. Da die Verpackungsfolie bereits durch das eingestanzte Trinkhalmloch geöffnet ist, ist eine Beschädigung des Getränkebeutels im Bereich des Einstichlochs - beispielsweise durch eine Nadel - nicht oder kaum sichtbar, so dass die Originalität der Verpackung nicht ausreichend gesichert ist. Ferner ist durch das Festkleben des PE-Streifens an der Innenseite der Verpackungsfolie ein weiterer Arbeitsschritt zur Herstellung der Verpackung bzw. des Verpackungsmaterials des Getränkebeutels erforderlich, wodurch zusätzliche Kosten verursacht werden. Der unter dem ausgestanzten Trinkhalmloch aufgeklebte PE-Streifen bietet außerdem keinen ausreichenden Schutz des Getränks (im Vergleich zu einer vollständig geschlossenen Verpackungsfolie), und zwar aufgrund von Sauerstoffmigration durch das Material des PE-Steifens selbst und aufgrund von Undichtigkeiten an der Verbindungsstelle zwischen dem PE-Streifen und der Innenseite der Verpackungsfolie. Schließlich kann nicht ausgeschlossen werden, dass sich der PE-Streifen vom Verpackungsmaterial ganz oder teilweise ablöst, was vom Benutzer nicht wahrgenommen werden kann. In diesem Fall können Luft oder Verunreinigungen in das Innere des Beutels eindringen, wodurch das Getränk verderben kann.The in the EP 0 600 502 A1 However, the proposed solution has some disadvantages. Since the packaging film already by the punched drinking straw hole is opened, damage to the beverage bag in the region of the puncture hole - for example, by a needle - not or hardly visible, so that the originality of the packaging is not sufficiently secured. Furthermore, adhering the PE strip to the inside of the packaging film requires a further operation for producing the packaging or packaging material of the beverage bag, which causes additional costs. The PE strip adhered under the punched-out drinking straw hole also does not provide adequate protection of the beverage (as compared to a completely closed packaging film) due to oxygen migration through the material of the PE strip itself and due to leaks at the juncture between the PE layer. Strip and the inside of the packaging film. Finally, it can not be ruled out that the PE strip separates from the packaging material in whole or in part, which can not be perceived by the user. In this case, air or contaminants may enter the interior of the bag, spoiling the beverage.

Die WO 98/14317 A1 offenbart ein Laminat mit einem dreischichtigen Aufbau, nämlich eine innere Schicht und eine äußere Schicht aus einem Polymer sowie eine mittlere Schicht aus Karton.The WO 98/14317 A1 discloses a laminate having a three-layered construction, namely an inner layer and an outer layer of a polymer and a middle layer of cardboard.

Die WO 97/46459 A1 beschreibt einen Getränkestandbeutel aus einem Verpackungsmaterial mit einem mehrschichtigen Aufbau. In der äußeren Schicht dieses mehrschichtigen Verpackungsmaterials ist eine Einstichstelle ausgebildet, indem ein Teil der äußeren Schicht mit Hilfe eines Lasers weggebrannt ist.The WO 97/46459 A1 describes a beverage sachet made of a packaging material with a multilayer structure. In the outer layer of this multi-layered packaging material, a puncture site is formed by burning away a part of the outer layer by means of a laser.

Die DE 1 009 445 B offenbart einen Verpackungsbehälter aus einem flexiblen Folienwerkstoff, der einen zweischichtigen Aufbau aus zwei Kunststofffolien hat.The DE 1 009 445 B discloses a packaging container of a flexible film material having a two-layer structure of two plastic films.

Der vorliegenden Erfindung liegt daher allgemein die Aufgabe zugrunde, die vorstehend erläuterten Nachteile des Standes der Technik zu überwinden. Der Grundgedanke der Erfindung basiert darauf, dass das Verpackungsmaterial bzw. die Verpackungsfolie des erfindungsgemäßen Getränkebehälters unversehrt bleibt und dass das Trinkhalmloch erst durch Einstechen des Trinkhalms in das Verpackungsmaterial hergestellt wird. Hierdurch bleibt das Verpackungsmaterial bis zur Benutzung unversehrt, so dass kein Sauerstoff in den Getränkebehälter eindringen kann.The present invention is therefore generally based on the object to overcome the above-described disadvantages of the prior art. The basic idea of the invention is based on the fact that the packaging material or the packaging film of the beverage container according to the invention remains intact and that the drinking straw hole is produced only by piercing the drinking straw into the packaging material. This leaves the packaging material up unharmed for use so that no oxygen can penetrate into the beverage container.

Zur Lösung dieser und weiterer Aufgaben dient ein Getränkebehälter mit den Merkmalen von Patentanspruch 1. In den abhängigen Patentansprüchen sind vorteilhafte und bevorzugte Weiterbildungen des erfindungsgemäßen Getränkebehälters angegeben.To solve these and other objects is a beverage container with the features of claim 1. In the dependent claims advantageous and preferred developments of the beverage container according to the invention are given.

Die vorliegende Erfindung basiert allgemein darauf, dass die äußere Schicht (und optional eine oder mehrere mittlere Schichten) des mehrschichtigen Verpackungsmaterials (Verpackungsfolie) im Bereich der Einstichstelle vollständig entfernt ist, wodurch die Verpackungsfolie im Bereich der Einstichstelle eine geringere Dicke hat, die durch die innere Schicht (und gegebenenfalls durch eine oder mehrere verbliebene mittlere Schichten) definiert ist. Auf diese Weise kann der Trinkhalm im Bereich der Einstichstelle (bedingt durch die verminderte Materialstärke der Verpackungsfolie) leicht - d.h. mit geringem Kraftaufwand - durch das verbliebene Verpackungsmaterial gestochen werden. Die Schicht bzw. Schichten, die sich unter dem Bereich der Einstichstelle (d.h. unter der entfernten äußeren Schicht und unter der optional entfernten mittleren Schicht(en)) befindet, besteht aus einem Material, das ebenfalls leicht durchstochen werden kann. Insgesamt wird durch die erfindungsgemäße Lösung erreicht, dass zum Durchstechen des Verpackungsmaterials durch den Trinkhalm etwa der gleiche Kraftaufwand erforderlich ist wie bei der Lösung, die in der EP 0 600 502 A1 vorgeschlagen ist.The present invention is generally based on the fact that the outer layer (and optionally one or more middle layers) of the multilayer packaging material (packaging film) is completely removed in the region of the puncture site, whereby the packaging film in the region of the puncture site has a smaller thickness, which by the inner Layer (and optionally by a or several remaining middle layers). In this way, the drinking straw in the region of the puncture site (due to the reduced thickness of the packaging film) easily - ie with little effort - are stung by the remaining packaging material. The layer or layers located below the area of the puncture site (ie under the removed outer layer and under the optionally removed middle layer (s)) is made of a material that also can be easily punctured. Overall, it is achieved by the inventive solution that for piercing the packaging material through the drinking straw about the same effort is required as in the solution that in the EP 0 600 502 A1 is proposed.

Durch das Entfernen der äußeren Schicht(en) des Verpackungsmaterials des erfindungsgemäßen Getränkebehälters im Bereich der Einstichstelle wird dem Konsumenten eine Markierung angegeben, durch die der Konsument einen Hinweis auf das Einstichloch erhält. Vorzugsweise ist diese Markierung durch die unterschiedlichen Beschaffenheiten des Materials der äußeren Schicht außerhalb der Einstichstelle und des Materials der von außen sichtbaren mittleren bzw. inneren Schicht im Bereich der Einstichstelle gebildet.By removing the outer layer (s) of the packaging material of the beverage container according to the invention in the region of the puncture site, the consumer is given a mark by which the consumer receives an indication of the puncture hole. Preferably, this marking is formed by the different properties of the material of the outer layer outside the puncture site and the material of the visible from the outside middle or inner layer in the region of the puncture site.

Durch die Markierung wird gewährleistet, dass das Verpackungsmaterial an der richtigen Stelle eingestochen wird, und zwar in dem Bereich, wo die äußere (und gegebenenfalls eine oder mehrere der mittleren Schicht(en)) des Verpackungsmaterials entfernt ist.The marking ensures that the packaging material is pierced in place in the area where the outer (and optionally one or more of the middle layer (s)) of the packaging material is removed.

Das Entfernen der äußeren (und optional einer oder mehrerer der mittleren Schicht(en)) des Verpackungsmaterials im Bereich der Einstichstelle wird vorzugsweise dadurch erzielt, dass die äußere Schicht (und optional die mittlere Schicht(en)) des Verpackungsmaterials mit Hilfe eines Lasers bzw. Laserstrahls entfernt wird. Hierbei ist die Intensität des Laserstrahls bzw. Laserlichts, die Größe des gewählten Brennpunkts und/oder die Zeitdauer der Bearbeitung entscheidend für das Ausmaß der Entfernung der Schicht(en) des Verpackungsmaterials am gewünschten Einstichloch.The removal of the outer (and optionally one or more of the middle layer (s)) of the packaging material in the region of the puncture site is preferably achieved in that the outer layer (and optionally the middle layer (s)) of the packaging material by means of a laser or Laser beam is removed. Here, the intensity of the laser beam or laser light, the size of the selected focal point and / or the duration of processing is critical to the extent of removal of the layer (s) of the packaging material at the desired puncture hole.

Es ist offensichtlich, dass das Material der Verpackung bzw. die äußere Schicht (und optional die mittlere Schicht(en)) des Verpackungsmaterials (Verpackungsfolie) so entfernt wird, dass dabei die darunter liegende Schicht bzw. Schichten, die bestehen bleiben sollen, nicht beschädigt werden, um die Originalität der Verpackung und damit den Schutz des Getränks gewährleisten. Vorzugsweise ist nur die äußere Schicht des Verpackungsmaterials im Bereich der Einstichstelle durch den Laserstrahl vollständig entfernt, wobei die innere Schicht und, falls vorhanden, die mittlere Schicht unversehrt bleiben. Es ist aber ebenso möglich, die äußere und, falls vorhanden, mittlere Schicht im Bereich der Einstichstelle vollständig (d.h. bis zum Erreichen der inneren Schicht) vollständig zu entfernen. Nachfolgend wird nur noch vom Entfernen der äußeren Schicht gesprochen, wobei aber offensichtlich ist, dass auch eine oder mehrere mittlere Schichten im Bereich der Einstichstelle vollständig entfernt sind. Wichtig ist nur, dass die innere (und optional eine oder mehrere mittlere Schichten) unversehrt bleibt. Vorzugsweise besteht die Verpackungsfolie aus zwei oder drei Schichten, nämlich einer inneren Schicht, einer äußeren Schicht und gegebenenfalls einer mittleren Schicht, die sich zwischen der inneren und der äußeren Schicht befindet. Bei einer Zwei-Schicht-Folie wird im Bereich der Einstichstelle nur die äußere Schicht entfernt. Bei einer Drei-Schicht-Folie können entweder nur die äußere oder zusätzlich die mittlere Schicht entfernt ist. Im Fall der Drei-Schicht-Folie ist es aber auch möglich, die äußere Schicht im Bereich der Einstichstelle vollständig zu entfernen und die mittlere Schicht nur teilweise (d.h. nicht ganz durchgehend) zu entfernen.It is obvious that the material of the packaging or the outer layer (and optionally the middle layer (s)) of the packaging material (packaging film) is removed so that the underlying layer or layers that should remain to be damaged, to ensure the originality of the packaging and thus the protection of the drink. Preferably, only the outer layer of the packaging material in the region of the puncture site is completely removed by the laser beam, leaving the inner layer and, if present, the middle layer intact. However, it is also possible to completely remove the outer and, if present, middle layer in the area of the puncture site (ie until reaching the inner layer). In the following, only the removal of the outer layer is mentioned, but it is obvious that one or more middle layers are also completely removed in the area of the puncture site. The important thing is that the inner (and optionally one or more middle layers) remain intact. Preferably, the packaging film is composed of two or three layers, namely an inner layer, an outer layer and optionally a middle layer located between the inner and outer layers. In the case of a two-layer film, only the outer layer is removed in the area of the puncture site. In a three-layer film, either only the outer or additionally the middle layer can be removed. In the case of the three-layer film, however, it is also possible to completely remove the outer layer in the region of the puncture site and to remove the middle layer only partially (ie not completely continuously).

Die äußere Schicht des Verpackungsmaterials besteht vorzugsweise aus Polyethylen (PE) oder Polyethylenterephthalat (PET). Der Laser schneidet diese äußere Schicht des Verpackungsmaterials vollständig (d.h. mindestens bis zur darunter liegenden mittleren bzw. inneren Schicht) ein. PE oder PET ist als Material für die äußere Schicht sehr gut geeignet, da es durch den Laserstrahl gut verbrannt wird. Es können aber auch andere geeignete Materialien verwendet werden, die sich für eine Bearbeitung durch einen Laser eignen. Das verbrennende PE- bzw. PET-Material kann während der Laserbearbeitung abgesaugt werden.The outer layer of the packaging material is preferably made of polyethylene (PE) or polyethylene terephthalate (PET). The laser cuts this outer layer of packaging material completely (i.e., at least to the underlying middle or inner layer). PE or PET is very suitable as a material for the outer layer, since it is well burned by the laser beam. However, other suitable materials suitable for laser processing may be used. The burning PE or PET material can be sucked off during the laser processing.

Nach dem Einstechen des Trinkhalms wird die innere Schicht (und gegebenenfalls die optional vorhandene mittlere Schicht) durchstochen, wobei dann der Spalt zwischen dem Trinkhalm und dem im Verpackungsmaterial gebildeten Einstichloch abgedichtet. Diese Abdichtung erfolgt dadurch, dass sich das Material der inneren Schicht (und der optionalen mittleren Schicht) eng an die Außenfläche des Trinkhalms anlegen.After piercing the drinking straw, the inner layer (and optionally the optionally present middle layer) is pierced, in which case the gap between the drinking straw and the puncture hole formed in the packaging material is sealed. This seal is made by that Place the material of the inner layer (and the optional middle layer) close to the outer surface of the drinking straw.

Nach dem Abfüllen des Getränks befindet sich im Kopfraum des Getränkebehälters üblicherweise kaum Luft, woraus folgt, dass sich das Einstichloch unter dem Flüssigkeitspegel befindet. Folglich kann es bei unzureichender Abdichtung zwischen Trinkhalm und Verpackungsmaterial zu einem Austritt von Flüssigkeit kommen, insbesondere weil beim Einstechen ein gewisser Druck auf den Getränkebehälter ausgeübt wird. Durch die vorstehend beschriebene Abdichtung zwischen Trinkhalm und Verpackung wird gewährleistet, dass beim Umkippen des Getränkebeutels mit eingestochenem Trinkhalm kein Saft durch den Spalt zwischen Trinkhalm und Verpackung auslaufen kann. Ebenso wird gewährleistet, dass das erforderliche Vakuum bzw. der Unterdruck in dem Getränkebehälter, das durch Saugen am Trinkhalm erzeugt wird, in der Verpackung ausreichend erhalten bleibt.After filling the beverage is usually in the headspace of the beverage container hardly any air, which implies that the puncture hole is below the liquid level. Consequently, leakage of liquid between the drinking straw and the packaging material can occur if the seal is insufficient, in particular because a certain pressure is exerted on the beverage container during piercing. By sealing between drinking straw and packaging described above ensures that when tipping the beverage bag with pierced drinking straw no juice can leak through the gap between the straw and packaging. It is also ensured that the required vacuum or the negative pressure in the beverage container, which is produced by sucking on the drinking straw, is sufficiently retained in the packaging.

Die durch Laserbearbeitung erzeugte Einstichstelle (d.h. der Bereich, wo die äußere Schicht und optional die mittlere Schicht entfernt sind) hat einen Durchmesser von etwa 4 mm, vorzugsweise 5 mm, kann aber auch eine Größe von etwa 3 mm bis etwa 7 mm haben.The puncture site created by laser processing (i.e., the area where the outer layer and optionally the middle layer are removed) has a diameter of about 4 mm, preferably 5 mm, but may also have a size of about 3 mm to about 7 mm.

Ein Vorteil der Laserbearbeitung besteht darin, dass der Produktionsprozess bei der Herstellung des erfindungsgemäßen Getränkebehälters besser kontrolliert werden kann. Aufgrund der Feinjustierung über Strom- oder Spannungszufuhr kann das Verbrennen des PE- oder PET-Materials sehr gut gesteuert werden. Hierdurch wird die Reproduzierbarkeit bei der Herstellung der Verpackung des Getränkebehälters verbessert.An advantage of the laser processing is that the production process in the production of the beverage container according to the invention can be better controlled. Due to the fine adjustment via current or voltage supply, the burning of the PE or PET material can be controlled very well. As a result, the reproducibility in the production of the packaging of the beverage container is improved.

Um das Einstechen des Trinkhalms zu erleichtern, kann die freiliegende Oberfläche der inneren Schicht mit einer Struktur in Form einer Sonne (d.h. leichte geradlinige Einschnitte oder Vertiefungen, die von einem zentralen Punkt radial nach außen laufen) versehen sein. Durch die mittels Lasern ausgebildete Struktur in der inneren Schicht der Verpackungsfolie wird bei dem erfindungsgemäßen Getränkebehälter das Öffnen des Getränkebehälters an der Einstichstelle weiter verbessert.To facilitate piercing of the drinking straw, the exposed surface of the inner layer may be provided with a structure in the form of a sun (ie, light straight lines or depressions running radially outward from a central point). As a result of the structure formed by means of lasers in the inner layer of the packaging film, the opening of the beverage container at the puncture site is further improved in the beverage container according to the invention.

Als Material für die Verpackungsfolie sind Polyethylen, Polyethylenterephthalat, Polypropylen und verschiedene Copolymere geeignet. Das zwischen etwa 60 und 100 µm dünne Material erlaubt ein einfaches Einstechen des Trinkhalmes, wobei das Einstechen durch das Entfernen der äußeren (und optional mittleren) Schicht deutlich erleichtert wird. Als besonders vorteilhaft hat sich die Verwendung einer mehrschichtigen Verbundfolie aus zwei oder drei Schichten erwiesen. Ein Vorteil solcher Verbundfolien besteht darin, dass sie im Wesentlichen für Sauerstoff undurchlässig sind.As the material for the packaging film, polyethylene, polyethylene terephthalate, polypropylene and various copolymers are suitable. The thin material between about 60 and 100 microns allows easy insertion of the drinking straw, the piercing is significantly facilitated by the removal of the outer (and optionally middle) layer. The use of a multilayer composite film of two or three layers has proved to be particularly advantageous. An advantage of such composite films is that they are substantially impermeable to oxygen.

Die verwendete Verbundfolie besteht vorzugsweise aus einer äußeren PE- oder PET-Schicht und einer inneren Aluminiumschicht. Als besonders vorteilhaft hat sich eine Verbundfolie aus drei Schichten erwiesen, die eine äußere Schicht aus PET, eine mittlere Schicht aus Aluminium und eine innere Schicht aus PE umfasst.The composite film used is preferably made of an outer PE or PET layer and an inner aluminum layer. Particularly advantageous is a composite film of three layers has been found, which comprises an outer layer of PET, a middle layer of aluminum and an inner layer of PE.

Durch das vollständige und vollflächige Entfernen der äußeren PE- oder PET-Schicht bildet sich am Rand der Laserung eine Mikrokante. Dadurch wird ein abstützender Effekt beim Einstechen des Trinkhalms erreicht.The complete and complete removal of the outer PE or PET layer forms a micro-edge at the edge of the laser. As a result, a supporting effect is achieved when piercing the drinking straw.

Eine weitere Optimierung wird dadurch erreicht, dass der Trinkhalm beim Einstechen nicht mehr in die Mitte der Einstichstelle zentriert werden muss. Vielmehr wird die Ausrichtung der Trinkhalmspitze zur Einstechöffnung egalisiert.A further optimization is achieved by the fact that the straw no longer has to be centered in the middle of the puncture site during piercing. Rather, the alignment of the drinking straw tip is equalized to the piercing opening.

Die vorliegende Erfindung wird nun anhand einiger Ausführungsbeispiele unter Bezugnahme auf die Figuren beschrieben, die eine Ausgestaltung des erfindungsgemäßen Getränkebehälters zeigen. Obwohl sich die folgende Beschreibung allgemein auf einen Getränkebehälter bezieht, kann das Konzept der Erfindung auch bei anderen Verpackungen Anwendung finden, bei denen ein Trinkhalm oder ein ähnlicher Gegenstand verwendet wird, um die Verpackung zu durchstechen.

  • Figur 1 zeigt eine schematische Darstellung des erfindungsgemäßen Getränkebehälters mit einer Einstichstelle im oberen Bereich, durch die das Entfernen der äußeren Schicht gebildet ist.
  • Figur 2 zeigt einen Längsschnitt durch das mehrschichtige Verpackungsmaterial des Getränkebehälters der vorliegenden Erfindung im Bereich der Einstichstelle.
The present invention will now be described with reference to some embodiments with reference to the figures, which show an embodiment of the beverage container according to the invention. Although the following description refers generally to a beverage container, the concept of the invention may also be applied to other packages in which a drinking straw or similar article is used to puncture the package.
  • FIG. 1 shows a schematic representation of the beverage container according to the invention with a puncture site in the upper region through which the removal of the outer layer is formed.
  • FIG. 2 shows a longitudinal section through the multilayer packaging material of the beverage container of the present invention in the region of the puncture site.

Unter Bezugnahme auf Figur 1 wird nachfolgend ein Ausführungsbeispiel des erfindungsgemäßen Getränkebehälters beschrieben.With reference to FIG. 1 An embodiment of the beverage container according to the invention will be described below.

Der Getränkebehälter 1 ist auf bekannte Weise durch eine mehrschichtige Verpackungsfolie 2 hergestellt. Im unteren Bereich des Behälters 1 ist die Folie zweifach gefaltet, um auf ebenfalls bekannte Weise den Bodenbereich des Behälters auszubilden. An der linken, rechten und oberen Kante sind die beiden Lagen der Verpackungsfolie miteinander verschweißt, verklebt oder auf andere Weise miteinander verbunden. Die Behälter 1 hat eine Höhe h von zwischen etwa 140 mm und 160 mm sowie eine Breite b von zwischen etwa 90 mm und 120 mm. Vorzugsweise beträgt die Höhe h etwa 150 mm und die Breite b etwa 110 mm. Höhe und Breite hängen jedoch von der gewünschten Füllmenge ab und können entsprechend variieren.The beverage container 1 is produced in a known manner by a multilayer packaging film 2. In the lower region of the container 1, the film is folded twice to form the bottom region of the container in a likewise known manner. At the left, right and upper edges, the two layers of the packaging film are welded together, glued or otherwise connected together. The container 1 has a height h of between about 140 mm and 160 mm and a width b of between about 90 mm and 120 mm. Preferably, the height h is about 150 mm and the width b is about 110 mm. Height and width, however, depend on the desired capacity and can vary accordingly.

Wie gezeigt, befindet sich auf der Vorderseite des Behälters 1 im oberen Bereich davon (etwa 20 mm) unter der oberen Kante eine durch teilweises Entfernen der äußeren Schicht der mehrschichtigen Verpackungsfolie gebildete Einstichstelle 3, die durch Bearbeitung mit Hilfe eines Laserstrahls hergestellt ist.As shown, on the front side of the container 1 in the upper portion thereof (about 20 mm), under the upper edge, there is a puncture site 3 formed by partially removing the outer layer of the multi-layered packaging film, which is made by processing with the aid of a laser beam.

Figur 2 zeigt einen Schnitt durch die Verpackungsfolie 2 (Verbundmaterial) des Getränkebehälters 1 der vorliegenden Erfindung. Die Folie 2 besteht aus drei Schichten 4, 5 und 6. Die äußere Schicht 4 besteht vorzugsweise aus PET und hat vorzugsweise eine Dicke von etwa 12 µm, die mittlere Schicht 5 besteht vorzugsweise aus Aluminium und hat vorzugsweise eine Dicke von etwa 9 µm, und die innere Schicht 6 besteht vorzugsweise aus PE und hat vorzugsweise eine Dicke von etwa 76 µm. Wie in Figur 2 deutlich zu sehen, ist das PET-Material der äußeren Schicht an einer Stelle 3 mit Hilfe des Laserstrahls bis zur mittleren Schicht 5 vollständig weggebrannt. Wie vorstehend beschrieben, ist es ebenfalls denkbar, dass die mittlere Schicht 5 im Bereich der Einstichstelle 3 entweder teilweise oder vollständig bis zum Erreichen der inneren Schicht 6 weggebrannt ist. Wie vorstehend erläutert, kann, wenn die mittlere Schicht 5 nur teilweise weggebrannt ist, in dieser mittleren Schicht 5 eine Struktur ausgebildet sein. Diese Struktur kann einen zentralen Punkt mit einem Durchmesser von vorzugsweise etwa 2 mm haben. Von diesem zentralen Punkt erstrecken sich mehrere Linien, die (wie der zentrale Punkt) mit Hilfe eines Laserstahls in die mittlere Schicht 5 des Verpackungsmaterials (Verpackungsfolie) geschnitten sind. Beispielsweise können sich 6, 8 oder 10 Linien in radialer Richtung von dem zentralen Punkt nach außen erstrecken. Diese durch einen Laserstrahl gebildeten Schnittlinien. An dem zentralen Punkt lässt sich die Verpackungsfolie sehr leicht durchstechen, da die mittlere Schicht 5 der Folie an dem zentralen Punkt und an den radial verlaufenden Linien eine verminderte Dicke hat. Beim Einstechen des Trinkhalms wird das Einstichloch definiert nach außen aufgeweitet. Dieses Aufweiten des Einstichlochs wird durch die radial verlaufenden Schnittlinien erleichtert, da die mittlere Schicht 5 der Verpackungsfolie 2 an diesen Linien ebenfalls eine verminderte Dicke hat. FIG. 2 shows a section through the packaging film 2 (composite material) of the beverage container 1 of the present invention. The film 2 consists of three layers 4, 5 and 6. The outer layer 4 is preferably made of PET and preferably has a thickness of about 12 microns, the middle layer 5 is preferably made of aluminum and preferably has a thickness of about 9 microns, and the inner layer 6 is preferably made of PE and preferably has a thickness of about 76 μm. As in FIG. 2 clearly seen, the PET material of the outer layer is completely burned away at a point 3 by means of the laser beam to the middle layer 5. As described above, it is also conceivable that the middle layer 5 is burned away in the region of the puncture site 3 either partially or completely until reaching the inner layer 6. As explained above, when the middle layer 5 is only partially burned away, a structure may be formed in this middle layer 5. These Structure may have a central point with a diameter of preferably about 2 mm. From this central point extend several lines which are cut (like the central point) by means of a laser beam into the middle layer 5 of the packaging material (packaging film). For example, 6, 8, or 10 lines may extend radially outward from the central point. This cut lines formed by a laser beam. At the central point, the packaging film is very easily punctured, since the middle layer 5 of the film has a reduced thickness at the central point and at the radial lines. When piercing the drinking straw, the puncture hole is defined widened outwards. This widening of the puncture hole is facilitated by the radial cutting lines, since the middle layer 5 of the packaging film 2 also has a reduced thickness at these lines.

Da die äußere Schicht 4 der Verpackungsfolie 2 vorzugsweise aus PET und die mittlere Schicht 5 vorzugsweise aus Aluminium besteht, kann der Konsument die Einstichstelle 3 mit bloßem Auge sehr gut erkennen, da sich die freiliegende Aluminium-Oberfläche der mittleren Schicht 5 im Bereich der Einstichstelle optisch sehr deutlich von der die Einstichstelle umgebenden PET-Oberfläche der äußeren Schicht 4 unterscheidet.Since the outer layer 4 of the packaging film 2 is preferably made of PET and the middle layer 5 is preferably made of aluminum, the consumer can see the puncture site 3 with the naked eye very well, since the exposed aluminum surface of the middle layer 5 in the region of the puncture site optically very clearly different from the PET surface of the outer layer 4 surrounding the puncture site.

Claims (6)

  1. Beverage container (1), in particular a beverage pouch, made of a multilayer packaging material (2), having a puncture site (3) adapted to puncture said multilayer packaging material at said puncture site with a drinking straw for inserting said drinking straw into said beverage container (1),
    wherein said multilayer package material being a composite material having at least three layers (7, 8, 9),
    wherein said multilayer composite material being a multilayer composite foil comprising at least an outer polyethylene foil (7) or an outer polyethylene terephthalate foil (7), a middle aluminum foil (8) and an inner polyethylene foil (9), and
    wherein said puncture site (3) being formed by a plurality of crossing lines (5) at which said inner layer (9) of said composite material (2) has a reduced thickness for facilitating puncturing of said composite material.
  2. Beverage container (1) according to claim 1, wherein said outer polyethylene terephthalate foil (7) having a thickness of 9 to 15 µm, said middle aluminum foil (8) having a thickness of 6 to 12 µm and said inner polyethylene foil (9) having a thickness of 60 to 100 µm.
  3. Beverage container (1) according to claim 1, wherein said outer polyethylene terephthalate foil (7) having a thickness of about 12 µm, said middle aluminum foil (8) having a thickness of about 9 µm and said inner polyethylene foil (9) having a thickness of about 76 µm.
  4. Beverage container (1) according to any of the preceding claims, wherein said puncture site (3) being formed by a plurality of crossing lines (5) at which said inner layer of said composite material (2) is incised by means of a laser beam.
  5. Beverage container (1) according to any of the preceding claims, wherein said puncture site (3) having a contour of a sun or a blossom with an outer diameter of about 3 mm to 5 mm, wherein the structure is formed by incisions of the inner layer of said composite material.
  6. Beverage container (1) according to any of the preceding claims, wherein said puncture site (3) being provided at the front side of the container and in its upper third, wherein said puncture site being marked in color.
EP12004851.7A 2011-12-19 2012-06-28 Drinks container with improved straw insertion opening Active EP2607264B1 (en)

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GB201308927D0 (en) 2013-05-17 2013-07-03 Kraft Foods R & D Inc A beverage preparation system, a capsule and a method for forming a beverage
GB201420262D0 (en) 2014-11-14 2014-12-31 Kraft Foods R & D Inc A method of forming a cup-shaped body for a beverage capsule

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DE102016014599A1 (en) 2016-12-08 2018-06-14 Bertram Lehnerer Method and device for determining flowable products
DE102016014599B4 (en) 2016-12-08 2019-02-28 Bertram Lehnerer Method and device for determining flowable products

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