EP0253160A1 - Gas-tight packaging container - Google Patents

Gas-tight packaging container Download PDF

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Publication number
EP0253160A1
EP0253160A1 EP87109004A EP87109004A EP0253160A1 EP 0253160 A1 EP0253160 A1 EP 0253160A1 EP 87109004 A EP87109004 A EP 87109004A EP 87109004 A EP87109004 A EP 87109004A EP 0253160 A1 EP0253160 A1 EP 0253160A1
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EP
European Patent Office
Prior art keywords
container
film
overlap
container according
inner container
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EP87109004A
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German (de)
French (fr)
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EP0253160B1 (en
Inventor
Walter Schellenberg
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Sandherr Packungen AG
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Sandherr Packungen AG
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Priority to AT87109004T priority Critical patent/ATE56191T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the invention relates to a container for gas-tight packaging according to the preamble of patent claim 1.
  • gas-tight packaging has been used, e.g. of carbonated beverages, either in glass containers or in deep-drawn, cylindrical metal containers.
  • These containers have the advantage that they can also be exposed to the temperatures of 130 to 140 ° C required for sterilizing the contents of the container, but they require a relatively large transport volume for their transport from the manufacturer to the bottler, since they cannot be stacked.
  • plastic containers e.g. made of polyester, which can be exposed to elevated temperatures even without deformation, have shown that their gas tightness is not sufficient to maintain an increased gas pressure over a longer period of time, as is the case for filling e.g. of carbonated drinks is required.
  • Used gas-tight containers of known type also put a burden on waste disposal systems.
  • the invention has for its object to find a container of the type mentioned, which consists essentially of residue-free combustible material and with sufficient mechanical resistance, in particular against permanent deformation, e.g. due to transport loads, has sufficient gas tightness and which also enables thermal sterilization of its contents. Furthermore, the container should be stackable before it is filled.
  • the container is conical in a manner known per se and consists of a thin-walled, gas-tight inner container having overlap seams and a thicker-walled outer container firmly connected to it, the inner and outer container being at least on the opening side have adjacent flanges.
  • the inner container preferably consists of a plastic-coated aluminum foil, the outer plastic layer being weldable to the material of the outer container if it is also made of plastic or is connected to it by adhesive if it is made of another material, e.g. Cardboard consists.
  • the thickness of the film mentioned is less than 0.15 mm and the aluminum layer itself is preferably less than 0.02 mm.
  • the inner container made from a film cut ensures the tightness of the container and the light protection of the container contents.
  • the plastic coating of the aluminum foil contributes to this tightness and also protects the aluminum layer from corrosion.
  • the overlap seams of the inner container are preferably designed in a manner known per se so that the same coatings of the film are welded to one another. This results from the fact that the inner layer is first folded outwards before the overlap edge is placed over it for welding. This results in a triple layer thickness along the overlap seams. When the container is subjected to internal pressure, these layers are pressed against each other at the seam, so that the reliability of the seal is increased there.
  • the inner container having the aluminum layer is particularly thin-walled means that permanent deformations under external local pressure application and elastic deformation of the outer container are not possible.
  • the outer container ensures the stability of the container and protects the inner container from damage that could cause a leak.
  • the inner container preferably consists of a plastic-coated aluminum foil, the outer plastic layer being weldable to the material of the outer container if it is also made of plastic or is connected to it by adhesive if it is made of another material, e.g. Cardboard consists.
  • the thickness of the film mentioned is less than 0.15 mm and the aluminum layer itself is preferably less than 0.02 mm.
  • the inner container made from a film cut ensures the tightness of the container and the light protection of the container contents.
  • the plastic coating of the aluminum foil contributes to this tightness and also protects the aluminum layer from corrosion.
  • the overlap seams of the inner container are preferably carried out in a manner known in the art such that in each case the identical coatings of the film are welded to one another. This results from the fact that the inner layer is first folded outwards before the overlap edge is placed over it for welding. This results in a triple layer thickness along the overlap seams. When the container is subjected to internal pressure, these layers are pressed against each other at the seam, so that the reliability of the seal is increased there.
  • the inner container having the aluminum layer is particularly thin-walled means that permanent deformations under external local pressure application and elastic deformation of the outer container are not possible.
  • the outer container ensures the stability of the container and protects the inner container from damage that could cause a leak.
  • the decorative equipment of the container can before preferably the blanks for the inner container and thus the inner container can be printed if the injection-molded or deep-drawn outer container is made of transparent plastic, for example polypropylene.
  • the outer container itself can have the printing and, for example, be made of cardboard, as is known per se from CH-PS 647 453.
  • the closure of the container after it has been filled can, depending on the intended use, e.g. as a drinking container, through a relatively rigid, gas-tight lid, which is connected to the container flange, e.g. by flanging or welding.
  • the container lid is made of sheet metal with a zipper, similar to tin cans, or, like the rest of the container part, it is made of multiple layers, with a thin film part ensuring tightness and a rigid cover part connected to it.
  • a container closure made of sheet metal is known, for example, from US Pat. No. 3,190,485.
  • the container 1 shown has a relatively rigid outer container 2, which determines the shape stability of the container and protects the very thin-walled and correspondingly flexible inner container 3 lying against it from damage.
  • the outer container 2 can be injection molded from plastic, e.g. Polypropylene, deep-drawing or winding from cardboard material must be made separately, so that the inner container, which is in each case made separately from film cuts, is subsequently inserted into it and connected to it by gluing or welding, at least along the edge flanges 4,4 ⁇ .
  • the prefabricated inner container 3 is placed in an injection mold and the outer container 2 is directly molded onto the inner container 3 by injection molding, so that it is welded to its thin plastic layer.
  • the inner container 3 thus forms a container lining.
  • the wall thickness of the outer container 2 which is, for example, 0.5 mm or more, is essentially determined by the strength requirements for the container 1.
  • the gas permeability is immaterial, so that other aspects, such as environmental friendliness and / or cost-effectiveness, can be preferred.
  • the inner container consists of a thin film, preferably less than 0.02 mm thick, whose choice of material is primarily determined by the requirement for very high gas tightness. Accordingly, a relatively high quality material such as plastic-coated aluminum foil, but this is only required in very small quantities.
  • the minimum thickness is essentially determined by the processability to form an inner container 3, so that this is produced from blanks for its jacket part 8 and its bottom part 7 by the connection seams for producing the spatial structure being formed by gas-tight overlap seams 5, 5, 13.
  • the outside of the film of the inner container 3 is thinly coated with a material which is easily welded to the material of the outer container, for example polypropylene.
  • the other, inner side of the film is coated with conventional thermal lacquer in order to be able to easily produce the seam connections 5,5 ⁇ , 13 by heat sealing.
  • 3 and 4 show two examples of an overlapping connection along the jacket seam 5 or 5 ⁇ running in the direction of a jacket line, such that inner layers of the film lie on top of one another along the seam 5.5 ⁇ and are welded to one another.
  • FIGS tion show the initial simple overlap for two different arrangements of an overlapping connecting seam 13 before it is folded against the jacket part 8 of the inner container 3 in the example according to FIG. 5 and against the bottom part 7 of the inner container 3 in the example according to FIG. 6 to be welded in this end position.
  • a film edge 11 der, 11 ⁇ is also present in the exemplary embodiments in FIGS tion continues over the folded sheet part 10 ⁇ .
  • the thermal conductivity of the aluminum layer has a surprisingly advantageous effect on the thermal shrinkage after the finished container 1 has been molded from an injection mold, if the inner container 3 is in it by the Outer container 2 is encapsulated by the shrinkage is about 50 percent less than without using an aluminum foil.

Abstract

1. A container for gastight packing, which is conical and made from a thinner-walled, gastight inner container (3) and a thicker-walled outer container (2) firmly connected thereto and at its open side comprising a flange (4), characterized in that the inner container is made from a foil material comprising overlap seams (5, 5', 13) and with its open side flange is resting on the flange of the outer container (2).

Description

Die Erfindung betrifft einen Behälter für gasdichte Ver­packungen gemäss dem Oberbegriff des Patentanspruchs 1.The invention relates to a container for gas-tight packaging according to the preamble of patent claim 1.

Bisher erfolgte die gasdichte Verpackung, z.B. von kohle­säurehaltigen Getränken, entweder in Glasbehältern oder in tiefgezogenen, zylindrischen Blechbehältern. Diese Behälter haben den Vorteil, dass sie auch den für eine Sterilisierung des Behälterinhaltes erforderlichen Temperaturen von 130 bis 140°C aussetzbar sind, sie beanspruchen jedoch für ihren Transport vom Hersteller zum Abfüller ein verhältnismässig grosses Transportvolumen, da sie nicht stapelbar sind. Ver­suche mit Kunststoffbehältern, z.B. aus Polyester, das auch ohne Verformung erhöhten Temperaturen ausgesetzt werden kann, haben gezeigt, dass deren Gasdichtigkeit nicht ausreicht, um über einen längeren Zeitraum eine erhöhten Gasinnendruck aufrechtzuerhalten, wie es für die Abfüllung z.B. von kohle­säurehaltigen Getränken erforderlich ist. Gebrauchte gas­dichte Behälter bekannter Art bilden ausserdem eine Belastung von Abfallbeseitigungssystemen.So far, gas-tight packaging has been used, e.g. of carbonated beverages, either in glass containers or in deep-drawn, cylindrical metal containers. These containers have the advantage that they can also be exposed to the temperatures of 130 to 140 ° C required for sterilizing the contents of the container, but they require a relatively large transport volume for their transport from the manufacturer to the bottler, since they cannot be stacked. Experiments with plastic containers, e.g. made of polyester, which can be exposed to elevated temperatures even without deformation, have shown that their gas tightness is not sufficient to maintain an increased gas pressure over a longer period of time, as is the case for filling e.g. of carbonated drinks is required. Used gas-tight containers of known type also put a burden on waste disposal systems.

Der Erfindung liegt die Aufgabe zugrunde, einen Behälter der genannten Art zu finden, der im wesentlichen aus rückstands­los verbrennbarem Material besteht und bei ausreichender me­chanischer Widerstandsfähigkeit, insbesondere gegenüber blei­benden Verformung, z.B. aufgrund von Transportbelastungen, eine ausreichende Gasdichtigkeit aufweist und der ausserdem eine thermische Sterilisierung seines Inhalts ermöglicht. Weiterhin soll der Behälter vor seinem Füllen stapelbar sein.The invention has for its object to find a container of the type mentioned, which consists essentially of residue-free combustible material and with sufficient mechanical resistance, in particular against permanent deformation, e.g. due to transport loads, has sufficient gas tightness and which also enables thermal sterilization of its contents. Furthermore, the container should be stackable before it is filled.

Die Lösung der genannten Aufgabe erfolgt erfindungsgemäss dadurch, dass der Behälter auf an sich bekannte Weise ko­nisch ist und aus einem dünnerwandigen, Ueberlappungsnähte aufweisenden, gasdichten Innenbehälter und einem mit diesem fest verbundenen, dickerwandigen Aussenbehälter besteht, wo­bei der Innen-und Aussenbehälter zumindest öffnungsseitig aneinanderliegende Flansche aufweisen.According to the invention, this object is achieved in that the container is conical in a manner known per se and consists of a thin-walled, gas-tight inner container having overlap seams and a thicker-walled outer container firmly connected to it, the inner and outer container being at least on the opening side have adjacent flanges.

Vorzugsweise besteht der Innenbehälter aus einer kunststoff­beschichteten Aluminiumfolie, wobei die äussere Kunststoff­schicht mit dem Material des Aussenbehälters verschweissbar ist, falls dieser ebenfalls aus Kunststoff besteht oder mit diesem durch Kleben verbunden ist, falls er aus einem anderen Material,wie z.B. Karton besteht. Einschliesslich der Kunst­stoffbeschichtung beträgt die Dicke der genannten Folie we­niger als 0,15 mm und die Aluminiumschicht selbst vorzugs­weise weniger als 0,02 mm.The inner container preferably consists of a plastic-coated aluminum foil, the outer plastic layer being weldable to the material of the outer container if it is also made of plastic or is connected to it by adhesive if it is made of another material, e.g. Cardboard consists. Including the plastic coating, the thickness of the film mentioned is less than 0.15 mm and the aluminum layer itself is preferably less than 0.02 mm.

Der aus einem Folienzuschnitt hergestellte Innenbehälter gewährleistet die Dichtigkeit des Behälters sowie den Licht­schutz des Behälterinhalts. Die Kunststoffbeschichtung der Aluminiumfolie trägt zu dieser Dichtigkeit bei und schützt ausserdem die Aluminiumschicht vor Korrosion. Die Ueberlap­pungsnähte des Innenbehälters sind vorzugsweise in an sich bekannter Weise so ausgeführt, dass jeweils die gleicharti­gen Beschichtungen der Folie miteinander verschweist sind. Dies ergibt sich dadurch, dass die Innenschicht zuvor nach aussen gefaltet wird, bevor der Ueberlappungsrand zum Ver­schweissen darüber gelegt wird. Somit ergibt sich entlang der Ueberlappungsnähte eine dreifache Schichtdicke. Bei Innendruckbelastung des Behälters werden diese Schichten an der Naht gegeneinander gepresst, so dass die Zuverlässig­keit der Abdichtung dort noch erhöht wird.The inner container made from a film cut ensures the tightness of the container and the light protection of the container contents. The plastic coating of the aluminum foil contributes to this tightness and also protects the aluminum layer from corrosion. The overlap seams of the inner container are preferably designed in a manner known per se so that the same coatings of the film are welded to one another. This results from the fact that the inner layer is first folded outwards before the overlap edge is placed over it for welding. This results in a triple layer thickness along the overlap seams. When the container is subjected to internal pressure, these layers are pressed against each other at the seam, so that the reliability of the seal is increased there.

Dadurch, dass der die Aluminiumschicht aufweisende Innenbe­hälter besonders dünnwandig ist, sind bleibende Verformungen unter äusserer örtlicher Druckanwendung und elastischer Ver­formung des Aussenbehälters nicht möglich. Der Aussenbehäl­ter bewirkt die Stabilität des Behälters und schützt den Innenbehälter vor Beschädigungen, die eine Undichtigkeit verursachen könnten.The fact that the inner container having the aluminum layer is particularly thin-walled means that permanent deformations under external local pressure application and elastic deformation of the outer container are not possible. The outer container ensures the stability of the container and protects the inner container from damage that could cause a leak.

Für die dekorative Ausstattung des Behälters können vor­ aneinanderliegende Flansche aufweisen.For the decorative equipment of the container can before have adjacent flanges.

Vorzugsweise besteht der Innenbehälter aus einer kunststoff­beschichteten Aluminiumfolie, wobei die äussere Kunststoff­schicht mit dem Material des Aussenbehälters verschweissbar ist, falls dieser ebenfalls aus Kunststoff besteht oder mit diesem durch Kleben verbunden ist, falls er aus einem anderen Material, wie z.B. Karton besteht. Einschliesslich der Kunst­stoffbeschichtung beträgt die Dicke der genannten Folie we­niger als 0,15 mm und die Aluminiumschicht selbst vorzugs­weise weniger als 0,02 mm.The inner container preferably consists of a plastic-coated aluminum foil, the outer plastic layer being weldable to the material of the outer container if it is also made of plastic or is connected to it by adhesive if it is made of another material, e.g. Cardboard consists. Including the plastic coating, the thickness of the film mentioned is less than 0.15 mm and the aluminum layer itself is preferably less than 0.02 mm.

Der aus einem Folienzuschnitt hergestellte Innenbehälter gewährleistet die Dichtigkeit des Behälters sowie den Licht­schutz des Behälterinhalts. Die Kunststoffbeschichtung der Aluminiumfolie trägt zu dieser Dichtigkeit bei und schützt ausserdem die Aluminiumschicht vor Korrosion. Die Ueberlap­pungsnähte des Innenbehälters sind vorzugsweise in an such bekannter Weise so ausgeführt, dass jeweils die gleicharti­gen Beschichtungen der Folie miteinander verschweist sind. Dies ergibt sich dadurch, dass die Innenschicht zuvor nach aussen gefaltet wird, befor der Ueberlappungsrand zum Ver­schweissen darüber gelegt wird. Somit ergibt sich entlang der Ueberlappungsnähte eine dreifache Schichtdicke. Bei Innendruckbelastung des Behälters werden diese Schichten an der Naht gegeneinander gepresst, so dass die Zuverlässig­keit der Abdichtung dort noch erhöht wird.The inner container made from a film cut ensures the tightness of the container and the light protection of the container contents. The plastic coating of the aluminum foil contributes to this tightness and also protects the aluminum layer from corrosion. The overlap seams of the inner container are preferably carried out in a manner known in the art such that in each case the identical coatings of the film are welded to one another. This results from the fact that the inner layer is first folded outwards before the overlap edge is placed over it for welding. This results in a triple layer thickness along the overlap seams. When the container is subjected to internal pressure, these layers are pressed against each other at the seam, so that the reliability of the seal is increased there.

Dadurch, dass der die Aluminiumschicht aufweisende Innenbe­hälter besonders dünnwandig ist, sind bleibende Verformungen unter äusserer örtlicher Druckanwendung und elastischer Ver­formung des Aussenbehälters nicht möglich. Der Aussenbehäl­ter bewirkt die Stabilität des Behälters und schützt den Innenbehälter vor Beschädigungen, die eine Undichtigkeit verursachen könnten.The fact that the inner container having the aluminum layer is particularly thin-walled means that permanent deformations under external local pressure application and elastic deformation of the outer container are not possible. The outer container ensures the stability of the container and protects the inner container from damage that could cause a leak.

Für die dekorative Ausstattung des Behälters können vor­ zugsweise die Zuschnitte für den Innenbehälter und somit der Innenbehälter bedruckt sein, falls der gespritze oder tiefgezogene Aussenbehälter aus durchsichtigem Kunststoff, beispielsweise Polypropylen, hergestellt wird. Der Aussen­behälter kann jedoch selbst die Bedruckung aufweisen und beispielsweise aus Karton hergestellt sein, wie an sich durch die CH-PS 647 453 bekannt ist.For the decorative equipment of the container can before preferably the blanks for the inner container and thus the inner container can be printed if the injection-molded or deep-drawn outer container is made of transparent plastic, for example polypropylene. However, the outer container itself can have the printing and, for example, be made of cardboard, as is known per se from CH-PS 647 453.

Der Verschluss des Behälters nach seiner Befüllung kann je nach Verwendungszweck, z.B. als Trinkbehälter, durch einen verhältnismässig steifen, gasdichten Deckel erfolgen, der mit dem Behälterflansch, z.B. durch Bördeln oder Schweissen, verbunden wird. Beispielsweise ist der Behälterdeckel, ähn­lich wie bei Blechdosen, aus Blech mit einem Aufreissver­schluss hergestellt, oder er ist, ähnlich wie der übrige Be­hälterteil, mehrschichtig ausgeführt, mit einem die Dichtig­keit gewährleistenden dünnen Folienteil und einem mit diesem verbundenen steifen Deckteil. Ein Behälterverschluss aus Blech ist beispielsweise durch die US-PS 3, 190,485 bekannt.The closure of the container after it has been filled can, depending on the intended use, e.g. as a drinking container, through a relatively rigid, gas-tight lid, which is connected to the container flange, e.g. by flanging or welding. For example, the container lid is made of sheet metal with a zipper, similar to tin cans, or, like the rest of the container part, it is made of multiple layers, with a thin film part ensuring tightness and a rigid cover part connected to it. A container closure made of sheet metal is known, for example, from US Pat. No. 3,190,485.

Die Zeichnung zeigt ein Ausführungsbeispiel eines erfin­dungsgemässen Behälters mit zwei Beispielen für die Aus­führung einer Ueberlappungsnaht, dabei zeigt:

  • Fig.1 einen Axialschnitt durch den Behälter ohne Deckel,
  • Fig.2 einen vergrösserten Teilquerschnitt im Bereich des Oeffnungsrandes des Behälters nach Fig.1,
  • Fig.3 einen Teilquerschnitt durch den Innenbehälter im Bereich einer entlang einer Mantellinie verlaufenden Ueberlappungsnaht,
  • Fig.4 eine Darstellung entsprechend Fig.3 mit einer anders ausgeführten Ueberlappungsnaht,
  • Fig.5 und 6 einfache Ueberlappungen im Verbindungsbereich zwi­schen dem Mantel und dem Boden des Innenbehälters, bevor diese gegen den Mantel oder den Boden gedrückt werden, zur Herstellung der Ueberlappungsverbindung und
  • Fig.7 einen Teilquerschnitt durch einen Behälter im Be­reich des Uebergangs zwischen Mantel und Boden mit einer schematischen Darstellung der aufgrund der einfachen Ueberlappung nach Fig.6 hergestellten Ueberlappungsverbindung.
The drawing shows an embodiment of a container according to the invention with two examples for the execution of an overlap seam, showing:
  • 1 shows an axial section through the container without a lid,
  • 2 shows an enlarged partial cross section in the region of the opening edge of the container according to FIG. 1,
  • 3 shows a partial cross section through the inner container in the region of an overlap seam running along a surface line,
  • 4 shows a representation corresponding to FIG. 3 with a differently designed overlap seam,
  • 5 and 6 simple overlaps in the connection area between the jacket and the bottom of the inner container before they are pressed against the jacket or the bottom are used to establish the overlap connection and
  • 7 shows a partial cross section through a container in the region of the transition between the jacket and the bottom with a schematic representation of the overlap connection produced on the basis of the simple overlap according to FIG.

Der dargestellte Behälter 1 hat einen verhältnismässig stei­fen Aussenbehälter 2, der die Behälterformstabilität be­stimmt und den innen an ihm anliegenden sehr dünnwandigen und entsprechend flexiblen Innenbehälter 3 gegen Beschädi­gung schützt. Der Aussenbehälter 2 kann durch Spritzgiessen aus Kunststoff, z.B. Polypropylen, Tiefziehen oder Wickeln aus Kartonmaterial separat hergestellt sein, so dass der in jedem Fall separat aus Folienzuschnitten hergestellte Innenbehälter nachträglich in ihn eingefügt und mit ihm durch Kleben oder Verschweissen zumindest enlang der Rand­flansche 4,4ʹ verbunden wird. Vorzugsweise wird jedoch der vorgefertigte Innenbehälter 3 in eine Spritzgiessform ein­gelegt und der Aussenbehälter 2 durch Spritzgiessen unmittel­bar an den Innenbehälter 3 angeformt, so dass er mit dessen dünnen Kunststoffschicht verschweisst. Somit bildet der Innenbehälter 3 eine Behälterauskleidung.The container 1 shown has a relatively rigid outer container 2, which determines the shape stability of the container and protects the very thin-walled and correspondingly flexible inner container 3 lying against it from damage. The outer container 2 can be injection molded from plastic, e.g. Polypropylene, deep-drawing or winding from cardboard material must be made separately, so that the inner container, which is in each case made separately from film cuts, is subsequently inserted into it and connected to it by gluing or welding, at least along the edge flanges 4,4ʹ. Preferably, however, the prefabricated inner container 3 is placed in an injection mold and the outer container 2 is directly molded onto the inner container 3 by injection molding, so that it is welded to its thin plastic layer. The inner container 3 thus forms a container lining.

Die Wanddicke des Aussenbehälters 2, die z.B. 0,5 mm oder mehr beträgt, ist im wesentlichen durch die Festigkeitsan­forderungen an den Behälter 1 bestimmt. Bei seiner Material­wahl ist die Gasdurchlässigkeit unwesentlich, so dass andere Gesichtspunkte, wie Umweltfreundlichkeit und/oder Preisgün­stigkeit bevorzugt werden können. Der Innenbehälter hinge­gen besteht aus einer dünnnen Folie von vorzugsweise weniger als 0,02 mm Dicke, deren Materialwahl in erster Linie durch die Anforderung an sehr hohe Gasdichtigkeit bestimmt ist. Entsprechend ist ein verhältnismässig hochwertiges Material, wie z.B. kunststoffbeschichtete Aluminiumfolie, zu wählen, das jedoch nur in sehr geringer Quantität benötigt wird. Die minimale Dicke ist im wesentlichen durch die Verarbeit­barkeit zu einem Innenbehälter 3 bestimmt, so dass dieser aus Zuschnitten für seinen Mantelteil 8 und seinen Boden­teil 7 hergestellt wird, indem die Verbindungsnähte zur Herstellung des Raumgebildes durch gasdichte Ueberlappungs­nähte 5,5ʹ,13 gebildet werden. Aussen ist die Folie des Innenbehälter 3 mit einem Material dünn beschichtet, das mit dem Material des Aussenbehälters, z.B. Polypropylen, leicht verschweisst. Die andere, innere Seite der Folie ist durch üblichen Thermolack beschichtet, um die Nahtverbin­dungen 5,5ʹ,13 durch Heissiegeln einfach herstellen zu kön­nen.The wall thickness of the outer container 2, which is, for example, 0.5 mm or more, is essentially determined by the strength requirements for the container 1. When choosing the material, the gas permeability is immaterial, so that other aspects, such as environmental friendliness and / or cost-effectiveness, can be preferred. The inner container, on the other hand, consists of a thin film, preferably less than 0.02 mm thick, whose choice of material is primarily determined by the requirement for very high gas tightness. Accordingly, a relatively high quality material such as plastic-coated aluminum foil, but this is only required in very small quantities. The minimum thickness is essentially determined by the processability to form an inner container 3, so that this is produced from blanks for its jacket part 8 and its bottom part 7 by the connection seams for producing the spatial structure being formed by gas-tight overlap seams 5, 5, 13. The outside of the film of the inner container 3 is thinly coated with a material which is easily welded to the material of the outer container, for example polypropylene. The other, inner side of the film is coated with conventional thermal lacquer in order to be able to easily produce the seam connections 5,5ʹ, 13 by heat sealing.

Die Fig.3 und 4 zeigen zwei Beispiele für eine überlappende Verbindung entlang der in Richtung einer Mantellinie verlau­fenden Mantelnaht 5 bzw. 5ʹ, derart, dass entlang der Naht 5,5ʹ jeweils Innenschichten der Folie aufeinander liegen und miteinander verschweisst sind. Im Beispiel nach Fig.3 ist ausserdem ein Folienrand 11 vorhanden, der sich in Um­fangsrichtung über den umgefalzten Folienteil 10 fortsetzt, so dass zusätzlich auch ein Kontakt mit Verschweissung, Ver­kelbung oder auch nur mit einfacher Auflage zwischen der Innenbeschichtung und Aussenbeschichtung der Folie entlang dem Folienrand vorhanden ist.3 and 4 show two examples of an overlapping connection along the jacket seam 5 or 5ʹ running in the direction of a jacket line, such that inner layers of the film lie on top of one another along the seam 5.5ʹ and are welded to one another. In the example according to FIG. 3, there is also a film edge 11 which continues in the circumferential direction over the folded-over film part 10, so that in addition there is also contact with welding, bonding or even with a simple contact between the inner coating and the outer coating of the film along the film edge is available.

Die Fig.5 und 6 zeigen für zwei verschiedene Anordnungen einer überlappenden Verbindungsnaht 13 die anfängliche ein­fache Ueberlappung, bevor diese beim Beispiel nach Fig.5 gegen den Mantelteil 8 des Innenbehälters 3 und beim Bei­spiel nach Fig. 6 gegen den Bodenteil 7 des Innenbehälters 3 umgelegt wird, um in dieser Endposition verschweisst zu werden. Wie beim Ausführungsbeisiel nach Fig.3 einer Mantel­naht, ist bei den Ausführungsbeispielen der Fig.5 und 6 eben­falls ein Folienrand 11ʹ,11ʺ vorhanden, der sich in Endposi­ tion über den umgefalzten Folienteil 10ʹ fortsetzt.5 and 6 show the initial simple overlap for two different arrangements of an overlapping connecting seam 13 before it is folded against the jacket part 8 of the inner container 3 in the example according to FIG. 5 and against the bottom part 7 of the inner container 3 in the example according to FIG. 6 to be welded in this end position. As with the exemplary embodiment according to FIG. 3 of a jacket seam, a film edge 11 der, 11ʺ is also present in the exemplary embodiments in FIGS tion continues over the folded sheet part 10ʹ.

Durch einen verhältnismässig breiten Ueberlappungsbereich 10,10ʹ sowie die Umfalzung der aneinanderliegenden Folien­teile gegen die Wand des Innenbehälters 3 , d.h. gegen den Mantelteil 8 oder den Bodenteil 7 ergibt sich eine zuver­lässige Abdichtung entlang der Nähte 5,5ʹ,13, die noch da­durch unterstütztwird, dass der Innendruck des gefüllten Behälters 1 die Ueberlappungsnähte komprimiert.Due to a relatively wide overlap area 10, 10ʹ and the folding of the foil parts lying against one another against the wall of the inner container 3, i.e. against the jacket part 8 or the bottom part 7 there is a reliable seal along the seams 5,5ʹ, 13, which is further supported by the fact that the internal pressure of the filled container 1 compresses the overlap seams.

Obwohl der Anteil an Aluminium bei Verwendung einer Alumi­niumfolie für den Innenbehälter 3 vernachlässigbar gering ist, wirkt sich die thermische Leitfähigkeit der Aluminium­schicht überraschend vorteilhaft auf das thermische Schrump­fen nach dem Ausformen des fertiggestellten Behälters 1 aus einer Spritzgiessform aus, wenn der Innenbehälter 3 in dieser durch den Aussenbehälter 2 umspritzt wird, indem die Schrum­pfung um ca. 50 Prozent geringer ausfällt als ohne Verwendung einer Aluminiumfolie.Although the proportion of aluminum is negligibly small when using an aluminum foil for the inner container 3, the thermal conductivity of the aluminum layer has a surprisingly advantageous effect on the thermal shrinkage after the finished container 1 has been molded from an injection mold, if the inner container 3 is in it by the Outer container 2 is encapsulated by the shrinkage is about 50 percent less than without using an aluminum foil.

Die Darstellung des Behälterdeckels erübrigt sich, da dieser auf an sich bekannte Weise, z.B. entsprechend der US-PS 3 190 485 ausgeführt sein kann.The representation of the container lid is superfluous, since this is done in a manner known per se, e.g. can be carried out according to US Patent 3,190,485.

Claims (11)

1. Behälter für gasdichte Verpackungen, dadurch gekennzeich­net, dass der Behälter (1) konisch ist und aus einem dünner­wandigen, Ueberlappungsnähte (5,5ʹ,13) aufweisenden, gas­dichten Innenbehälter (3) und einem mit diesem fest ver­bundenen, dickerwandigen Aussenbehälter (2) besteht, wobei der Innen- und Aussenbehälter zumindest öffnungsseitig an­einanderliegende Flansche (4) aufweisen.1. Container for gas-tight packaging, characterized in that the container (1) is conical and made of a thin-walled, overlapping seams (5,5ʹ, 13) having a gas-tight inner container (3) and a thick-walled outer container (2) connected to it. The inner and outer containers have flanges (4) which lie against one another at least on the opening side. 2.Behälter nach Anspruch 1, dadurch gekennzeichnet, dass der Innenbehälter (3) aus einer kunststoffbeschichteten Alumi­niumfolie besteht.2. Container according to claim 1, characterized in that the inner container (3) consists of a plastic-coated aluminum foil. 3.Behälter nach Anspruch 2, dadurch gekennzeichnet, dass der Aussenbehälter (2) aus einem mit der Kunststoffbeschichtung des Innenbehälters (3) verschweissbaren Material besteht.3. Container according to claim 2, characterized in that the outer container (2) consists of a material that can be welded to the plastic coating of the inner container (3). 4.Behälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Aussenbehälter (2) aus Karton besteht.4. Container according to claim 1 or 2, characterized in that the outer container (2) consists of cardboard. 5.Behälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Innenbehälter (3) aus einer Folie geformt ist, deren Dicke weniger als 0,15 mm beträgt.5. Container according to claim 1 or 2, characterized in that the inner container (3) is formed from a film, the thickness of which is less than 0.15 mm. 6.Behälter nach Anspruch 2 oder 5, dadurch gekennzeichnet, dass die Aluminiumschicht der Folie des Innenbehälters (3) weniger als 0,02 mm dick ist.6. Container according to claim 2 or 5, characterized in that the aluminum layer of the film of the inner container (3) is less than 0.02 mm thick. 7.Behälter nach einem der Ansprüche 1 bis 3, dadurch gekenn­zeichnet, dass der Innenbehälter (3) an seiner Aussenseite bedruckt ist und der Aussenbehälter (2) aus durchsichtigem Kunststoff besteht.7. Container according to one of claims 1 to 3, characterized in that the inner container (3) is printed on its outside and the outer container (2) consists of transparent plastic. 8.Behälter nach einem der Ansprüche 1 bis 3 oder 5 bis 7, da­durch gekennzeichnet, dass der Aussenbehälter (2) aus Poly­propylen besteht.8. Container according to one of claims 1 to 3 or 5 to 7, characterized in that the outer container (2) consists of polypropylene. 9. Behälter nach einem der Ansprüche 1 bis 8, dadurch ge­kennzeichnet, dass die Ueberlappungsnähte (5,5ʹ,13) eine Ueberlappung entlang eines auswärts gefalteten Folienran­des (10) aufweisen, so dass an der Ueberlappungsnaht (5,­5ʹ,6) Innenschichten der Folie aneinanderliegen.9. Container according to one of claims 1 to 8, characterized in that the overlap seams (5,5ʹ, 13) have an overlap along an outwardly folded film edge (10), so that on the overlap seam (5,5ʹ, 6) inner layers of the Lay the film together. 10.Behälter nach Anspruch 9, dadurch gekennzeichnet, dass sich die Ueberlappung an der Ueberlappungsnaht bis über den umgefalzten Folienrand (10) hinwegerstreckt, so dass ein Folienrand (11) mit seiner Innenbeschichtung an der Aussenbeschichtung der Folie anliegt.10. Container according to claim 9, characterized in that the overlap at the overlap seam extends beyond the folded-over film edge (10), so that a film edge (11) lies with its inner coating on the outer coating of the film. 11.Behälter nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Ueberlappungsnaht (13) zwischen dem Mantelteil (8) und dem Bodenteil (7ʹ) des Innenbehälters (3) radial nach innen gerichtet ist.11. Container according to claim 9 or 10, characterized in that the overlap seam (13) between the jacket part (8) and the bottom part (7ʹ) of the inner container (3) is directed radially inwards.
EP87109004A 1986-06-30 1987-06-23 Gas-tight packaging container Expired - Lifetime EP0253160B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109004T ATE56191T1 (en) 1986-06-30 1987-06-23 CONTAINERS FOR GAS-TIGHT PACKAGING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2625/86 1986-06-30
CH2625/86A CH670233A5 (en) 1986-06-30 1986-06-30

Publications (2)

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EP0253160A1 true EP0253160A1 (en) 1988-01-20
EP0253160B1 EP0253160B1 (en) 1990-09-05

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ID=4237968

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EP87109004A Expired - Lifetime EP0253160B1 (en) 1986-06-30 1987-06-23 Gas-tight packaging container

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US (1) US5102006A (en)
EP (1) EP0253160B1 (en)
JP (1) JPS6333253A (en)
AT (1) ATE56191T1 (en)
AU (1) AU601435B2 (en)
CA (1) CA1298563C (en)
CH (1) CH670233A5 (en)
DE (2) DE3764734D1 (en)
ES (1) ES2018211B3 (en)
GR (1) GR3001124T3 (en)
NZ (1) NZ220833A (en)
ZA (1) ZA874388B (en)

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EP3848176A3 (en) * 2019-12-20 2021-10-06 Saier Verpackungstechnik GmbH & Co. KG Container with in-mould labels and / or with labels, method and devices for its manufacture as well as lid and container
DE102022121356A1 (en) 2022-08-24 2024-02-29 Saier Verpackungstechnik Gmbh & Co. Kg Containers and containers with foil

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EP0413049A1 (en) * 1989-08-18 1991-02-20 Bersanetti S.N.C. Di Bersanetti Loredano E C. Cartridge for polyurethane sealing materials
EP1151927B1 (en) * 2000-04-26 2005-06-01 Asahi Glass Company Ltd. Container with a gas-impermeable coating for an optical article
DE102004051630B4 (en) * 2004-10-23 2011-03-03 Anton Jazbinsek Container and method for its production
DE102005060259A1 (en) * 2005-12-16 2007-06-21 Ritter Gmbh Plastic container with diffusion barrier e.g. for plastic masses, has wall body made from plastic and casing part device such as cylindrical pipe and front wall or floor part formed to it
US20110217994A1 (en) * 2010-03-03 2011-09-08 Boku, Inc. Systems and Methods to Automate Transactions via Mobile Devices
DE102013006309B4 (en) * 2013-04-12 2015-10-22 Roba Services Gmbh Packaging system comprising a cardboard structure

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EP3848176A3 (en) * 2019-12-20 2021-10-06 Saier Verpackungstechnik GmbH & Co. KG Container with in-mould labels and / or with labels, method and devices for its manufacture as well as lid and container
DE102022121356A1 (en) 2022-08-24 2024-02-29 Saier Verpackungstechnik Gmbh & Co. Kg Containers and containers with foil

Also Published As

Publication number Publication date
AU7406487A (en) 1988-01-07
ZA874388B (en) 1987-12-21
CH670233A5 (en) 1989-05-31
ES2018211B3 (en) 1991-04-01
AU601435B2 (en) 1990-09-13
GR3001124T3 (en) 1992-05-12
DE3764734D1 (en) 1990-10-11
US5102006A (en) 1992-04-07
JPS6333253A (en) 1988-02-12
DE3721203C2 (en) 1992-02-20
DE3721203A1 (en) 1988-01-14
ATE56191T1 (en) 1990-09-15
EP0253160B1 (en) 1990-09-05
CA1298563C (en) 1992-04-07
NZ220833A (en) 1990-01-29

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