EP0128434A2 - Container having a lid foil - Google Patents

Container having a lid foil Download PDF

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Publication number
EP0128434A2
EP0128434A2 EP84106010A EP84106010A EP0128434A2 EP 0128434 A2 EP0128434 A2 EP 0128434A2 EP 84106010 A EP84106010 A EP 84106010A EP 84106010 A EP84106010 A EP 84106010A EP 0128434 A2 EP0128434 A2 EP 0128434A2
Authority
EP
European Patent Office
Prior art keywords
cover film
tear
weakening
container
fastening part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84106010A
Other languages
German (de)
French (fr)
Other versions
EP0128434A3 (en
Inventor
Werner Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rissen Maschinenfabrik GmbH
Original Assignee
Rissen Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rissen Maschinenfabrik GmbH filed Critical Rissen Maschinenfabrik GmbH
Publication of EP0128434A2 publication Critical patent/EP0128434A2/en
Publication of EP0128434A3 publication Critical patent/EP0128434A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/30—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness using cutting devices
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2004—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting
    • B65D77/2008—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting the container flange being crimped over the cover
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0018—Upper closure of the 43-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2091—Lines of weakness or apertures in cover

Definitions

  • the invention relates to a container with a container opening which is closed by a tear-open cover film which is firmly connected to the opening edge.
  • the invention is therefore based on the object of creating a container whose lid can be equipped with high strength against mechanical stress and yet can be easily opened.
  • the solution according to the invention consists in that a tear-open part is firmly connected to the outside of the cover film and the cover film has a weakening near the transition from the handle part flap to the fastening part of the tear-open part connected to the cover film.
  • the lid film can easily be torn open in its other, firmer areas. Since the weakening point can be arranged in an area that is less exposed to mechanical stress than other areas of the cover film, the cover film can be equipped with high strength without making opening difficult. This is all the more true since the weakening point is protected below the tear-open part.
  • the weakening is arranged within the area in which the cover film is connected to the fastening part of the tab. In this way, forces occurring in the area of the weakening point within the cover film can be transmitted from the fastening part across the weakening point. This avoids overloading the weakening point and opening it unintentionally.
  • this requirement can easily be met by the tab material because its opening purpose requires greater strength than in the tear area of the cover film.
  • this feature makes it possible to weaken the cover film with an opening (for example in the form of a perforation or a cut), because the tightness of the cover in this area is ensured by the fastening part covering the weakening.
  • the prerequisite for this is that the fastening part and its connection to the cover film have sufficient tightness at least in this area exhibit.
  • the fastening part expediently extends along the circumference of the desired opening area of the cover film, so that the cover film can be torn open all around after it has been torn open in the region of the weakening near the grip tab.
  • the tab takes on the role of a tear strip. It is often not necessary to prepare the target opening line by means of a weakening line, because if the flap is suitably designed, the crack will tear at the boundary line between the cover film and the fastening part anyway.
  • a line of weakness is provided which lies within and on the outer edge of the surface in which the cover film is connected to the fastening part of the tab.
  • this ensures that the cover film can be torn open in a predetermined form, which is often desirable in terms of practical and aesthetic requirements, and at the same time, adequate mechanical strength and possibly tightness are imparted by covering the weakening line by the fastening part.
  • the fastening part is advantageously ring-shaped, wherein it extends around the entire surface to be opened or at least its essential part. It can also cover them in a plate shape.
  • it can be designed according to a special feature of the invention so that it forms a support part for the cover film. To do this, it is made from a suitably rigid material such as cardboard. So that he can transfer the support forces to the container without the attachment To jeopardize the cover film as a result, according to the invention, the opening edge of the container can furthermore have a retaining collar that encompasses the support part, for example in the form of a flanging roller in a paper cup container.
  • the cover film can be made correspondingly thinner. This applies in particular in cases in which the fastening part covers the opening of the container essentially over the entire area, supported by the retaining collar of the container all the way round. In these cases, it is possible to make the cover film thinner than was previously possible with regard to its mechanical tasks.
  • the material web 1 consists of a material which is particularly suitable for the production of the cover film, preferably of aluminum film coated with polyethylene.
  • a circular perforation 2 is ring-shaped closed line of weakness, as well as a weakening in the form of a perforation 3 extending transversely to the perforation 2, which extends over the larger part of a radius and is expediently connected to the perforation 2 or at least only a small distance therefrom.
  • a cardboard cover or a cardboard cover coated with aluminum and polyethylene is sealed onto the aluminum web 1 such that the weakening lines 2 and 3 are completely enclosed by the sealing surface.
  • a circumferential sealing edge for example 1 mm wide, so that the perforations in the aluminum foil 1 which may have occurred in the area of the perforations are completely sealed.
  • the sealing surface is indicated by hatching in the drawing. It can be seen that it is essentially full-surface, with the exception of the area of a grip tab 5, which was formed by a punching line 6 inserted in the cardboard cover 4 before the sealing. Folding up the grip tab 5 from the plane of the cardboard cover can be facilitated by a punched-out incision 7.
  • the punching line 6 can, as indicated at 8 in the drawing, be carried out up to the circumference of the cardboard cover. In order to avoid a leak at the interface between the punching line in the box and the perforation 2, it can instead be provided that the punching line 6 ends before the sealing strip covering the weakening line 2. Finally, it is also possible to reduce the punch line in the area of this sealing surface to a non-continuous line of weakness.
  • the lid After the lid has been deep-drawn so that the protruding edge 11 of the aluminum foil forms an upstanding frame 12, it is inserted into the opening edge 13 of the container 14 according to FIG. 2, after which the parts 12 and 13 are welded together tightly and then flanged , so that a stable edge is formed, the flange 15 protruding around the edge of the cardboard cover.
  • the grip tab 5 is pulled up. Even if the punching line 6 is not carried out in the area 8, the cardboard tears open at this point. If the cover film has not yet been damaged and the box should have partially detached from it in this area, the cover film will tear at the latest in the area of the weakening 3, because the connection between the cardboard lid and the lid film was dimensioned to be stronger than the tear resistance of the cover film in the area of the weakening 3, so that the part of the Cover film beyond the weakening 3 remains on the cardboard lid and can easily be torn along the weakening line 2 . The ripping process can then be continued in a ring progressively along the entire circumference until the entire cover part within the weakening line 2 is separated.
  • the lid according to the invention has considerable handling strength even if a material of only a few tenths of a millimeter thick is used for the lid film.

Abstract

The opening of a container is sealed with a tear-off lid foil, on the outside of which a tear-off part is fixedly arranged. Near to the transition from a gripping tab to the attachment part of the tear-off part connected to the lid foil, the latter is provided with a weakening favouring the tearing-off, which weakening, like a weakening line encircling the region to be opened, may be covered in a protective and sealing manner by the attachment part of the tear-off part. The latter in an annular or plate shape can cover a substantial part of the lid foil in a supporting manner and can, in turn, be supported by an inwardly directed collar at the edge of the container opening in order to relieve the lid foil from mechanical loading. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Behälter mit einer Behälteröffnung, die von einer mit dem öffnungsrand fest verbundenen, aufreißbaren Deckelfolie verschlossen ist.The invention relates to a container with a container opening which is closed by a tear-open cover film which is firmly connected to the opening edge.

Vornehmlich bei Lebensmittelbehältern, beispielsweise Joghurt-Bechern oder Kaffeedosen,ist es üblich, die Behälteröffnung mittels einer Deckelfolie zu verschließen, die fest und dicht mit dem öffnungsrand verschweißt wird. Zum öffnen muß die Folie aufgerissen werden und sollte daher nicht zu fest sein, um dem öffnungsvorgang nicht allzuviel unbequemen Widerstand entgegenzusetzen. Andererseits muß die Deckelfolie den Behälterinhalt auch bei mechanischer Beanspruchung hinreichend schützen und daher fest sein. Diese beiden Anforderungen widersprechen sich.In the case of food containers in particular, for example yoghurt cups or coffee cans, it is customary to close the container opening by means of a cover film which is welded tightly and tightly to the opening edge. To open it, the film has to be torn open and should therefore not be too tight in order not to offer too much uncomfortable resistance to the opening process. On the other hand, the lid film must adequately protect the contents of the container even under mechanical stress and must therefore be strong. These two requirements contradict each other.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Behälter zu schaffen, dessen Deckel mit hoher Festigkeit gegenüber mechanischer Beanspruchung ausgerüstet werden kann und dennoch leicht geöffnet werden kann.The invention is therefore based on the object of creating a container whose lid can be equipped with high strength against mechanical stress and yet can be easily opened.

Die erfindungsgemäße Lösung besteht darin, daß mit der Deckelfolie auf deren Außenseite ein Aufreißteil fest verbunden ist und die Deckelfolie nahe dem übergang von der Griffteillasche zum mit der Deckelfolie verbundenen Befestigungsteil des Aufreißteils eine Schwächung aufweist.The solution according to the invention consists in that a tear-open part is firmly connected to the outside of the cover film and the cover film has a weakening near the transition from the handle part flap to the fastening part of the tear-open part connected to the cover film.

Wird die Lasche hochgerissen, so wird auf die Deckelfolie im Bereich des Übergangs von der LascheIf the tab is torn up, the lid film is in the area of the transition from the tab

zum Befestigungsteil eine hohe Spannung ausgeübt, wodurch die Deckelfolie im Bereich der Schwächung reißt. Von hier ausgehend kann die Deckelfolie auch in ihren übrigen, festeren Bereichen leicht aufgerissen werden. Da die Schwächungsstelle in einem Bereich angeordnet werden kann, der einer mechanischen Beanspruchung weniger ausgesetzt ist als andere Bereiche der Deckelfolie, kann die Deckelfolie mit hoher Festigkeit ausgerüstet werden, ohne daß dies das öffnen erschwert. Dies gilt um so mehr, als die Schwächungsstelle geschützt unterhalb des Aufreißteils liegt.a high tension is exerted on the fastening part, causing the cover film to tear in the area of the weakening. Starting from here, the lid film can easily be torn open in its other, firmer areas. Since the weakening point can be arranged in an area that is less exposed to mechanical stress than other areas of the cover film, the cover film can be equipped with high strength without making opening difficult. This is all the more true since the weakening point is protected below the tear-open part.

Bei einer besonders bevorzugten Ausführungsform der Erfindung ist die Schwächung innerhalb derjenigen Fläche angeordnet, in der die Deckelfolie mit dem Befestigungsteil der Lasche verbunden ist. Im Bereich der Schwächungsstelle innerhalb der Deckelfolie auftretende Kräfte können auf diese Weise über die Schwächungsstelle hinweg von dem Befestigungsteil übertragen werden. Dadurch wird eine überlastung der Schwächungsstelle und ein ungewolltes öffnen derselben vermieden. Dies setzt voraus, daß der Befestigungsteil eine Festigkeit aufweist, die zumindest derjenigen der Deckelfolie gleicht und zweckmäßigerweise wesentlich größer ist. Diese Voraussetzung kann von dem Laschenmaterial jedoch ohne weiteres erfüllt werden, weil sein öffnungszweck eine größere Festigkeit als im Aufreißbereich der Deckelfolie verlangt. - Ferner gestattet es dieses Merkmal, die Schwächung der Deckelfolie mit einer Durchbrechung (beispielsweise in Form einer Perforation oder eines Schnitts) auszuführen, weil die Dichtheit des Deckels in diesem Bereich durch den die Schwächung abdeckenden Befestigungsteil gewährleistet wird. Voraussetzung dafür ist, daß der Befestigungsteil sowie seine Verbindung mit der Deckelfolie zumindest in diesem Bereich eine hinreichende Dichtigkeit aufweisen.In a particularly preferred embodiment of the invention, the weakening is arranged within the area in which the cover film is connected to the fastening part of the tab. In this way, forces occurring in the area of the weakening point within the cover film can be transmitted from the fastening part across the weakening point. This avoids overloading the weakening point and opening it unintentionally. This presupposes that the fastening part has a strength which is at least the same as that of the cover film and is expediently substantially greater. However, this requirement can easily be met by the tab material because its opening purpose requires greater strength than in the tear area of the cover film. - Furthermore, this feature makes it possible to weaken the cover film with an opening (for example in the form of a perforation or a cut), because the tightness of the cover in this area is ensured by the fastening part covering the weakening. The prerequisite for this is that the fastening part and its connection to the cover film have sufficient tightness at least in this area exhibit.

Zweckmäßigerweise erstreckt sich der Befestigungsteil längs dem Umfang des Soll-öffnungsbereichs der Deckelfolie, so daß die Deckelfolie nach ihrem anfänglichen Aufreißen im Bereich der Schwächung nahe der Grifflasche mittels des Befestigungsteils ringsum aufgerissen werden kann. Dabei übernimmt die Lasche die Rolle eines Aufreißstreifens. Es ist oftmals nicht erforderlich, die Soll-öffnungslinie durch eine Schwächungslinie vorzubereiten, weil der Riß bei geeigneter Ausführung der Lasche ohnehin an der Grenzlinie zwischen Deckelfolie und Befestigungsteil reißen wird. Bei einer besonders zweckmäßigen Ausführungsform der Erfindung ist jedoch eine Schwächungslinie vorgesehen, die innerhalb und am äußeren Rande derjenigen Fläche liegt, in der die Deckelfolie mit dem Befestigungsteil der Lasche verbunden ist. Dadurch wird einerseits erreicht, daß das Aufreißen der Deckelfolie in vorbestimmter Form erfolgen kann, was im Hinblick auf praktische und ästhetische Anforderungen häufig erwünscht ist, wobei gleichzeitig durch die Abdeckung der Schwächungslinie durch den Befestigungsteil eine hinreichende mechanische Festigkeit und ggf. Dichtigkeit vermittelt werden.The fastening part expediently extends along the circumference of the desired opening area of the cover film, so that the cover film can be torn open all around after it has been torn open in the region of the weakening near the grip tab. The tab takes on the role of a tear strip. It is often not necessary to prepare the target opening line by means of a weakening line, because if the flap is suitably designed, the crack will tear at the boundary line between the cover film and the fastening part anyway. In a particularly expedient embodiment of the invention, however, a line of weakness is provided which lies within and on the outer edge of the surface in which the cover film is connected to the fastening part of the tab. On the one hand, this ensures that the cover film can be torn open in a predetermined form, which is often desirable in terms of practical and aesthetic requirements, and at the same time, adequate mechanical strength and possibly tightness are imparted by covering the weakening line by the fastening part.

Vorteilhafterweise ist der Befestigungsteil ringförmig ausgebildet, wobei er sich rings um die gesamte zu öffnende Fläche oder zumindest deren wesentlichen Teil erstreckt. Er kann sie auch plattenförmig abdecken. Insbesondere in diesen beiden Fällen kann er nach einem besonderen Merkmal der Erfindung so ausgebildet sein, daß er einen Abstützteil für die Deckelfolie bildet. Dafür wird er aus einem entsprechend steifen Material wie Karton hergestellt. Damit er die Abstützkräfte auf den Behälter übertragen kann, ohne die Befestigung der Deckelfolie dadurch zu gefährden, kann nach der Erfindung ferner der öffnungsrand des Behälters einen den Abstützteil überfassenden Haltekragen aufweisen, beispielsweise in Form einer Bördelrolle bei einem Papierbecherbehälter.The fastening part is advantageously ring-shaped, wherein it extends around the entire surface to be opened or at least its essential part. It can also cover them in a plate shape. In particular in these two cases, it can be designed according to a special feature of the invention so that it forms a support part for the cover film. To do this, it is made from a suitably rigid material such as cardboard. So that he can transfer the support forces to the container without the attachment To jeopardize the cover film as a result, according to the invention, the opening edge of the container can furthermore have a retaining collar that encompasses the support part, for example in the form of a flanging roller in a paper cup container.

Wenn gemäß den zuletzt erläuterten Merkmalen der Aufreißteil eine abstützende Funktion übernimmt, kann die Deckelfolie entsprechend dünner ausgebildet sein. Dies gilt besonders in den Fällen, in denen der Befestigungsteil die öffnung des Behälters im wesentlichen ganzflächig, umlaufend von dem Haltekragen des Behälters unterstützt, abdeckt. In diesen Fällen ist es möglich, die Deckelfolie dünner auszuführen, als dies bisher mit Rücksicht auf deren mechanische Aufgaben möglich war.If, according to the features explained last, the tear-open part assumes a supporting function, the cover film can be made correspondingly thinner. This applies in particular in cases in which the fastening part covers the opening of the container essentially over the entire area, supported by the retaining collar of the container all the way round. In these cases, it is possible to make the cover film thinner than was previously possible with regard to its mechanical tasks.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die ein vorteilhaftes Ausführungsbeispiel der Erfindung veranschaulicht. Darin zeigen:

  • Fig. 1 eine Draufsicht auf den in der Herstellung befindlichen Deckel,
  • Fig. 2 einen Teil-Längsschnitt durch einen Behälter während der Ausrüstung mit dem Deckel und
  • Fig. 3 einen der Fig. 2 entsprechenden Teilschnitt durch den fertigen Behälter.
The invention is explained in more detail below with reference to the drawing, which illustrates an advantageous embodiment of the invention. In it show:
  • 1 is a plan view of the lid being manufactured,
  • Fig. 2 is a partial longitudinal section through a container while being equipped with the lid and
  • Fig. 3 is a partial section corresponding to FIG. 2 through the finished container.

Die Materialbahn 1 besteht aus einem für die Herstellung der Deckelfolie besonders geeigneten Werkstoff, vorzugsweise aus mit Polyäthylen beschichteter Aluminium-Folie. In die Bahn 1 wird eine kreisförmige Perforation 2 als ringförmig geschlossene Schwächungslinie, sowie eine Schwächung in Form einer quer zur Perforation 2 verlaufenden Perforation 3, die sich über den größeren Teil eines Radius erstreckt und zweckmäßigerweise mit der Perforation 2 verbunden ist oder wenigstens nur geringen Abstand von dieser aufweist, gestanzt.The material web 1 consists of a material which is particularly suitable for the production of the cover film, preferably of aluminum film coated with polyethylene. In the web 1, a circular perforation 2 is ring-shaped closed line of weakness, as well as a weakening in the form of a perforation 3 extending transversely to the perforation 2, which extends over the larger part of a radius and is expediently connected to the perforation 2 or at least only a small distance therefrom.

Konzentrisch zu der Schwächungslinie 2 wird auf die Aluminiumbahn 1 ein Kartondeckel oder ein mit Aluminium und Polyäthylen beschichteter Kartondeckel so aufgesiegelt, daß die SchwächungsLinien 2 und 3 vollständig von Siegelungsfläche eingeschlossen sind. Insbesondere befindet sich außerhalb der Schwächungslinie 2 ein umlaufender Siegelrand von beispielsweise 1 mm Breite, so daß die im Bereich der Perforationen möglicherweise entstandenen Durchbrechungen der Aluminium-Folie 1 vollständig abgedichtet werden. In der Zeichnung ist die Siegelfläche schraffiert angedeutet. Man erkennt, daß sie im wesentlichen vollflächig ist, mit Ausnahme des Bereichs einer Grifflasche 5, die durch eine vor der Siegelung eingebrachte Stanzlinie 6 im Kartondeckel 4 gebildet wurde. Das Hochklappen der Grifflasche 5 aus der Ebene des Kartondeckels kann durch einen ausgestanzten Einschnitt 7 erleichtert werden. Die Stanzlinie 6 kann, wie dies bei 8 in der Zeichnung angedeutet ist, bis zum Umfang des Kartondeckels durchgeführt sein. Um eine Undichtigkeit bei der Schnittstelle zwischen der Stanzlinie im Karton und der Perforation 2 zu vermeiden, kann statt dessen auch vorgesehen sein, daß die Stanzlinie 6 vor dem die Schwächungslinie 2 abdeckenden Siegelungsstreifen endet. Schließlich ist es auch möglich, die Stanzlinie im Bereich dieser Siegelungsfläche auf eine nicht durchgehende Schwächungslinie zu reduzieren.Concentric to the weakening line 2, a cardboard cover or a cardboard cover coated with aluminum and polyethylene is sealed onto the aluminum web 1 such that the weakening lines 2 and 3 are completely enclosed by the sealing surface. In particular, outside the weakening line 2 there is a circumferential sealing edge, for example 1 mm wide, so that the perforations in the aluminum foil 1 which may have occurred in the area of the perforations are completely sealed. The sealing surface is indicated by hatching in the drawing. It can be seen that it is essentially full-surface, with the exception of the area of a grip tab 5, which was formed by a punching line 6 inserted in the cardboard cover 4 before the sealing. Folding up the grip tab 5 from the plane of the cardboard cover can be facilitated by a punched-out incision 7. The punching line 6 can, as indicated at 8 in the drawing, be carried out up to the circumference of the cardboard cover. In order to avoid a leak at the interface between the punching line in the box and the perforation 2, it can instead be provided that the punching line 6 ends before the sealing strip covering the weakening line 2. Finally, it is also possible to reduce the punch line in the area of this sealing surface to a non-continuous line of weakness.

Wenn man die Grifflasche 5 hochbiegt, wird ihre Biegelinie bei derjenigen Linie 9 liegen, bei der die Siegelungsverbindung zwischen dem Kartondeckel und der Deckelfolie beginnt.Diese Linie markiert daher den übergang zwischen der Grifflasche und dem Befestigungsteil des den Aufreißteil bildenden Kartondeckels. Die Anordnung ist so getroffen, daß dieser übergang nahe der Schwächung 3 liegt, wobei diese aber vom Siegelungsbereich noch überdeckt wird.If you bend the handle tab 5 up, its bend line will lie on the line 9 at which the sealing ver bond begins between the cardboard cover and the cover film, this line therefore marks the transition between the grip tab and the fastening part of the cardboard cover forming the tear-open part. The arrangement is such that this transition is close to the weakening 3, but this is still covered by the sealing area.

Wenn der Kartondeckel in dieser Lage auf die Materialbahn 1 aufgesiegelt ist, wird der aus Deckelfolie und Kartondeckel bestehende Deckel längs der Linie 10 ausgestanzt, so daß ein Rand 11 der Deckelfolie übersteht.If the cardboard cover is sealed onto the material web 1 in this position, the cover consisting of the cover film and the cardboard cover is punched out along the line 10 so that an edge 11 of the cover film protrudes.

Nachdem der Deckel so tiefgezogen wurde, daß der überstehende Rand 11 der Aluminium-Folie eine hochstehende Zarge 12 bildet, wird er gemäß Fig. 2 in den öffnungsrand 13 des Behälters 14 eingesetzt, wonach die Teile 12 und 13 miteinander dicht verschweißt und anschließend gebördelt werden, so daß eine stabile Kante entsteht, wobei der Bördel 15 ringsum den Rand des Kartondeckels stützend überragt.After the lid has been deep-drawn so that the protruding edge 11 of the aluminum foil forms an upstanding frame 12, it is inserted into the opening edge 13 of the container 14 according to FIG. 2, after which the parts 12 and 13 are welded together tightly and then flanged , so that a stable edge is formed, the flange 15 protruding around the edge of the cardboard cover.

Dank der Abstützung des Kartondeckels durch den Bördel 15 und die nahezu vollflächige Abdeckung der Deckelfolie durch den Kartondeckel kann dieser die von außen oder innen herrührenden mechanischen Kräfte übernehmen und die Deckelfolie schützen, auch wenn diese nur dünn ist. Dabei ist es im Prinzip gleichgültig, ob dieser Teil des Bechers als Deckel oder als Boden verwendet wird.Thanks to the support of the cardboard cover by the flange 15 and the almost full-surface covering of the cover film by the cardboard cover, the latter can take over the mechanical forces coming from outside or inside and protect the cover film, even if it is only thin. In principle, it does not matter whether this part of the cup is used as a lid or as a base.

Zum öffnen des Behälters wird die Grifflasche 5 hochgerissen. Auch wenn die Stanzlinie 6 im Bereich 8 nicht durchgeführt ist, reißt der Karton an dieser Stelle auf. Wenn die Deckelfolie dabei noch nicht verletzt worden sein sollte und der Karton sich in diesem Bereich teilweise von ihr gelöst haben sollte, reißt die Deckelfolie jedoch spätestens im Bereich der Schwächung 3, weil die Verbindung zwischen dem Kartondeckel und der Deckelfolie fester als der Aufreißwiderstand der Deckelfolie im Bereich der Schwächung 3 bemessen wurde, so daß der Teil der Deckelfolie jenseits von der Schwächung 3 am Kartondeckel bleib und entlang der Schwächungslinie 2 leicht aufgerissen werden kann. Der Aufreißvorgang kann dann ringförmig fortschreitend entlang dem ganzen Umfang fortgesetzt werden, bis der gesamte Deckelteil innerhalb der Schwächungslinie 2 herausgetrennt ist.To open the container, the grip tab 5 is pulled up. Even if the punching line 6 is not carried out in the area 8, the cardboard tears open at this point. If the cover film has not yet been damaged and the box should have partially detached from it in this area, the cover film will tear at the latest in the area of the weakening 3, because the connection between the cardboard lid and the lid film was dimensioned to be stronger than the tear resistance of the cover film in the area of the weakening 3, so that the part of the Cover film beyond the weakening 3 remains on the cardboard lid and can easily be torn along the weakening line 2 . The ripping process can then be continued in a ring progressively along the entire circumference until the entire cover part within the weakening line 2 is separated.

Man erkennt, daß der erfindungsgemäße Deckel selbst dann eine beträchtliche Handhabungsfestigkeit besitzt, wenn für die Deckelfolie ein Material von nur wenigen Zehntel Millimeter Dicke verwendet wird.It can be seen that the lid according to the invention has considerable handling strength even if a material of only a few tenths of a millimeter thick is used for the lid film.

Claims (10)

1. Behälter mit einer Behälteröffnung, die von einer mit dem öffnungsrand fest verbundenen, aufreißbaren Deckelfolie verschlossen ist, dadurch gekennzeichnet, daß auf der Außenseite der Deckelfolie (1) ein Aufreißteil (4) angeordnet ist, der aus einem mit der Deckelfolie fest verbundenen Befestigungsteil (15) und einer Grifflasche (5) besteht, und daß die Deckelfolie nahe dem Übergang von der Grifflasche (5) zum mit der Deckelfolie verbundenen Befestigungsteil (15) des Aufreißteils eine Schwächung (3) aufweist.1. Container with a container opening which is closed by a tear-open cover film which is firmly connected to the opening edge, characterized in that a tear-open part (4) is arranged on the outside of the cover film (1) and consists of a fastening part which is firmly connected to the cover film (15) and a grip tab (5), and that the cover film has a weakening (3) near the transition from the grip tab (5) to the fastening part (15) of the tear-open part connected to the cover film. 2. Behälter nach Anspruch 1, dadurch gekennzeichnet, daß die Schwächung (3) innerhalb der Fläche liegt, in der die Deckelfolie (1) mit dem Befestigungsteil (15) verbunden ist.2. Container according to claim 1, characterized in that the weakening (3) lies within the area in which the cover film (1) is connected to the fastening part (15). 3. Behälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Befestigungsteil (15) sich längs dem Umfang des Soll-öffnungsbereichs der Deckelfolie erstreckt.3. Container according to claim 1 or 2, characterized in that the fastening part (15) extends along the circumference of the target opening area of the cover film. 4. Behälter nach Anspruch 3, dadurch gekennzeichnet, daß die Deckelfolie (1) eine den Soll-Öffnungsbereich umgrenzende Schwächungslinie aufweist, die innerhalb und am äußeren Rande der Fläche liegt, in der die Deckelfolie (1) mit dem Befestigungsteil (15) verbunden ist.4. A container according to claim 3, characterized in that the cover film (1) has a weakening line defining the target opening area, which lies within and on the outer edge of the surface in which the cover film (1) is connected to the fastening part (15) . 5. Behälter nach Anspruch 4, dadurch gekennzeichnet, daß der Befestigungsteil (15) ringförmig ist.5. A container according to claim 4, characterized in that the fastening part (15) is annular. 6. Behälter nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß der Befestigungsteil (15) plattenförmig ist.6. Container according to claim 4 or 5, characterized in that the fastening part (15) is plate-shaped. 7. Behälter nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Aufreißteil (4) zumindest entlang dem öffnungsrand als Abstützteil für die Deckelfolie (1) ausgebildet ist.7. Container according to one of claims 1 to 6, characterized in that the tear-open part (4) is formed at least along the opening edge as a support part for the cover film (1). 8. Behälter nach Anspruch 7, dadurch gekennzeichnet, daß der öffnungsrand des Behälters einen den Abstützteil überfassenden Haltekragen (15) aufweist.8. A container according to claim 7, characterized in that the opening edge of the container has a retaining collar (15) covering the supporting part. 9. Behälter nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Schwächung (3) bzw. Schwächungslinie (2) der Deckelfolie (1) eine Perforation einschließt und daß der sie überdeckende Befestigungsteil und seine Verbindung mit der Deckelfolie eine der Deckelfolie vergleichbare Dichtigkeit aufweisen.9. Container according to one of claims 2 to 8, characterized in that the weakening (3) or line of weakness (2) of the cover film (1) includes a perforation and that the fastening part covering it and its connection with the cover film one of the cover film comparable Have tightness. 10. Behälter nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Aufreißwiderstand der Deckelfolie (1) im Bereich der Schwächungslinie (2) und der Schwächung (3) geringer ist als die Verbindungsfestigkeit zwischen der Deckelfolie (1) und dem Befestigungsteil (15) des Aufreißteils (4).10. Container according to one of claims 1 to 9, characterized in that the tear resistance of the cover film (1) in the region of the line of weakness (2) and the weakening (3) is less than the connection strength between the cover film (1) and the fastening part ( 15) of the tear-open part (4).
EP84106010A 1983-06-08 1984-05-25 Container having a lid foil Withdrawn EP0128434A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3320723A DE3320723A1 (en) 1983-06-08 1983-06-08 CONTAINER WITH LID FILM
DE3320723 1983-06-08

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EP0128434A2 true EP0128434A2 (en) 1984-12-19
EP0128434A3 EP0128434A3 (en) 1985-12-04

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934544A (en) * 1989-02-27 1990-06-19 Minnesota Mining And Manufacturing Company Z-tab innerseal for a container and method of application
US4961986A (en) * 1987-09-09 1990-10-09 Stanpac Inc. Sealing member for a container
US5004111A (en) * 1989-02-27 1991-04-02 Minnesota Mining & Manufacturing Company Internally delaminating tabbed innerseal for a container and method of applying
DE29916072U1 (en) * 1999-09-08 1999-12-09 Bernd Wuerfel Gmbh Velten Busi Insert for lid for tightly closing containers
EP1650138A1 (en) * 2004-10-25 2006-04-26 Impress Group B.V. Container comprising a closing sheet that is directly connected to the wall

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220599A (en) * 1958-12-17 1965-11-30 Fried Receptacle and combined quick opening means
GB1038995A (en) * 1963-05-07 1966-08-17 Andrea Angelo R D Improvements in containers
US3951331A (en) * 1974-05-29 1976-04-20 Phillips Petroleum Company Reclosable closure
US4194681A (en) * 1978-12-21 1980-03-25 Champion International Corporation Openable container cover

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220599A (en) * 1958-12-17 1965-11-30 Fried Receptacle and combined quick opening means
GB1038995A (en) * 1963-05-07 1966-08-17 Andrea Angelo R D Improvements in containers
US3951331A (en) * 1974-05-29 1976-04-20 Phillips Petroleum Company Reclosable closure
US4194681A (en) * 1978-12-21 1980-03-25 Champion International Corporation Openable container cover

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961986A (en) * 1987-09-09 1990-10-09 Stanpac Inc. Sealing member for a container
AU620825B2 (en) * 1987-09-09 1992-02-27 Illinois Tool Works Inc. Sealing member for a container
US5433992A (en) * 1987-09-09 1995-07-18 Stanpac Inc. Sealing member for a container
US4934544A (en) * 1989-02-27 1990-06-19 Minnesota Mining And Manufacturing Company Z-tab innerseal for a container and method of application
US5004111A (en) * 1989-02-27 1991-04-02 Minnesota Mining & Manufacturing Company Internally delaminating tabbed innerseal for a container and method of applying
DE29916072U1 (en) * 1999-09-08 1999-12-09 Bernd Wuerfel Gmbh Velten Busi Insert for lid for tightly closing containers
EP1650138A1 (en) * 2004-10-25 2006-04-26 Impress Group B.V. Container comprising a closing sheet that is directly connected to the wall
WO2006045417A1 (en) * 2004-10-25 2006-05-04 Impress Group B.V. Container comprising a closing sheet that is directly connected to the wall

Also Published As

Publication number Publication date
DE3320723A1 (en) 1984-12-13
EP0128434A3 (en) 1985-12-04

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