EP0673849A1 - Tube closure made of plastic - Google Patents

Tube closure made of plastic Download PDF

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Publication number
EP0673849A1
EP0673849A1 EP95810180A EP95810180A EP0673849A1 EP 0673849 A1 EP0673849 A1 EP 0673849A1 EP 95810180 A EP95810180 A EP 95810180A EP 95810180 A EP95810180 A EP 95810180A EP 0673849 A1 EP0673849 A1 EP 0673849A1
Authority
EP
European Patent Office
Prior art keywords
guarantee band
tube
guarantee
tube closure
connecting elements
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.)
Granted
Application number
EP95810180A
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German (de)
French (fr)
Other versions
EP0673849B1 (en
Inventor
Karl Bösch
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.)
H OBRIST AND CO AG
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H OBRIST AND CO AG
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Filing date
Publication date
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Publication of EP0673849A1 publication Critical patent/EP0673849A1/en
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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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3457—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being formed separately but connected to the closure

Definitions

  • the invention relates to a tube closure with a screw cap made of plastic according to the preamble of claim 1.
  • Such tube closures are known in a wide variety of embodiments and are customary and e.g. in DE-A1-93 00 042 of the applicant.
  • the tube thread is either molded onto the tube neck or formed in one piece with the tube neck.
  • solutions are also known in which the tube itself has no thread and a threaded part e.g. is snapped onto a threadless attachment on the tube shoulder or is otherwise connected to the tube.
  • the guarantee tape is tear-off connected to the tube neck.
  • the guarantee band engages with the screw cap in such a way that it tears off when the tube is opened for the first time.
  • the screw cap has a radially outwardly projecting bead on its lower edge, which extends over the guarantee band when the screw cap is fitted. When opened, the guarantee band is pulled up by this bead so that it tears off the tube neck.
  • the invention has for its object to improve the construction of such a tube closure with a guarantee tape in such a way that the guarantee tape on the one hand shows the first opening in working order and after manipulation cannot simply be placed over the tube neck again and jammed on it, and on the other hand it is structurally simple can be produced and attached to the tube closure.
  • the invention provides in an optimally simple way to subdivide the guarantee band by at least two separating slots in such a way that it divides into at least two protruding guarantee band segments in the event of damage.
  • the opening for the first time is clearly indicated by the protruding band segments and at the same time the individual segments have the advantage over a circumferential ring that they can be separated from the screw cap, so that T-shaped caps can also be used and become clear after the tube is closed again it can be seen that this has already been opened once.
  • the tear-off connection between the guarantee band and the tube neck can be made in different ways.
  • tubes with an attached threaded part made of plastic it is known to connect the guarantee band in one piece to the threaded part by means of connecting elements.
  • connecting elements The same possibility also exists for the increasingly common tubes made entirely of plastic.
  • An advantageous alternative is to use an additional ring which is screwed onto the tube thread or snaps behind the thread. In this case, the guarantee band is connected to this ring by connecting elements.
  • the sensitivity of the guarantee tape depends to a large extent on the depth of the separating slots. In any case, these must be so deep that the guarantee band is divided into individual segments when it is opened for the first time.
  • the guarantee band is completely subdivided by the separating slots, so that it already consists of several guarantee band segments that are not directly connected to one another before opening for the first time. Each of these segments is held in position by at least two connecting elements.
  • the tamper-evident band disintegrates particularly safely after manipulation if the guarantee band has radially inwardly directed retaining elements and if the screw cap carries at least one radially outwardly directed bead or projection, via which the retaining elements can engage in a form-fitting manner as soon as the separating slots snap back into the starting position.
  • the guarantee band can be made particularly stable and firmly connected to a retaining ring or the thread or the tube neck if a connecting element is provided on each side of the separating slots.
  • the individual segments of the guarantee band protrude conspicuously, in particular in an axially symmetrical form, after the connecting elements have torn.
  • each guarantee band segment is held by two connecting elements, one of the connecting elements being arranged at each end of the guarantee band segment is. This ensures that the segment is only connected to the tube neck at one end after the breakage of one of its connecting elements, so that the injury is clearly visible.
  • both connecting elements of such a segment break at the same time when the closure is opened.
  • the relevant segment will automatically disappear, which is particularly the case with foods such as Tubes containing mayonnaise or mustard, which are used in the preparation of dishes, have one disadvantage: if the consumer is careless, a guarantee band segment could fall unnoticed into a prepared dish.
  • the screw cap can be secured particularly securely with the guarantee band if there is a barb axially directed against the tube closure on the guarantee band.
  • the screw cap 6 shown schematically in FIG. 1 serves to close the tube neck 1, also shown schematically in FIG. 2, and therefore forms a tube closure together with the latter.
  • the tube neck 1 has an external thread 3 and on the screw cap 6 there is a corresponding one Internal thread 5 provided.
  • an annular guarantee band 10 is attached, which extends coaxially to the thread 3.
  • the connection between the guarantee band 10 and the tube neck 1 is established by a ring 4 engaging under the thread 3, to which the guarantee band 10 is fastened by means of tear-off webs 9, 9a serving as a connecting element.
  • the guarantee band 10 has at its upper end radially inwardly directed retaining elements 11 which have the shape of a barb in cross-section and whose inside diameter is smaller than the outside diameter of a projection 8 projecting outwards at the lower edge of the screw cap 6 with the screw cap on, a positive connection with the projection 8 of the screw cap, which can only be released by destroying the guarantee band.
  • FIG. 3 shows the tube closure with the screw cap 6 fully screwed on, the projection 8 of which is overlapped by the retaining elements 11 of the guarantee band 10.
  • the guarantee band 10 is divided by two approximately vertically extending separating slots 7.
  • the separating slots 7 shown here completely cut through the ring-shaped guarantee band 10, so that it is basically two independent, semicircular guarantee band segments. This is a preferred embodiment, but in principle it would also be possible to reduce the depth of the separating slots 7, so that the guarantee band 10 would only be weakened in the area of the separating slots 7 and would then break open when the tube closure was first opened.
  • the two guarantee band segments are only connected at their ends by tear-off webs 9, 9a to the inner ring 4. In principle, further tear-off webs could be arranged along the guarantee tape segments.
  • the restriction to only two tear-off webs 9, 9a arranged at the ends has the advantage that when the closure is opened one of the two webs is the first to tear, thus ensuring that the segment only has one end at the end after the closure has been opened Ring 4 is connected so that it stands out clearly visible.
  • the two tear-off webs 9, 9a are preferably of different strengths, so that it is ensured that one of the two webs (the weaker web 9) is the first to tear. The risk that both webs 9, 9a tear at the same time can thus be excluded.
  • the stronger tear-off webs 9a and the weaker tear-off webs 9 are preferably distributed such that one of the segment ends adjoining a separating slot 7 is connected to the inner ring 4 by a stronger web 9a and the other by a weaker web 9. This results in a regular image of the broken guarantee band when the closure is opened; in the present example with two semicircular guarantee band segments, an approximately axially symmetrical image is obtained.
  • the projection 8 runs onto the lower edge of the holding elements 11 and takes it upwards until the tear-off webs 9 tear off and release the guarantee tape. Since the tear-off webs 9 are formed laterally on the inner surface of the guarantee band 10, a shear force is exerted on the tear-off webs 9 when opened, so that they tear reliably.
  • the condition of the guarantee band after the first opening of the tube closure is shown in FIGS. 6 and 7.
  • the different strengths of the tear-off webs 9, 9a mean that only the weaker tear-off webs 9 tear off and the individual segments remain connected to the inner ring 4 by the stronger webs 9a.
  • the already mentioned, alternating arrangement of strong and weak tear-off webs results in a regular, in this case axially symmetrical, image of the broken guarantee band.
  • the ring 4 can also be easily produced in an injection molding tool which works without radially opening jaws.
  • the ring 4 with the guarantee band 10 can advantageously be made of a plastic with a different color than the screw cap 6. This allows the visual display of the absence of the guarantee band 10 to be improved.
  • FIG. 8 shows the side view of the tube neck of FIG. 2.
  • the continuous separating slot 7 of the guarantee band 10 can be clearly seen, in the lower region of the separating slot 7 a section of the ring 4 arranged within the guarantee band 10 is visible.
  • FIG. 9 shows a tube neck with an alternative embodiment variant of the guarantee band, which has three separating slots 7a and consists of three guarantee band segments 12 of the same size.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Frames And Binding Bands (AREA)
  • Closures For Containers (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Bag Frames (AREA)

Abstract

The guarantee sealing-strip (10) is divided by at least two slits into at least two segments. At least one connecting element (9,9a) of varying resistance is positioned on each side of each slit which runs parallel to the lengthwise axis of the thread (3). The connecting element (11) on the guarantee strip is in the form of a barb pointing axially towards the closure piece of the tube.

Description

Die Erfindung betrifft einen Tubenverschluss mit einer Schraubkappe aus Kunststoff gemäss Oberbegriff von Anspruch 1. Derartige Tubenverschlüsse sind in verschiedensten Ausführungsformen bekannt und gebräuchlich und z.B. in der DE-A1-93 00 042 der Anmelderin beschrieben.The invention relates to a tube closure with a screw cap made of plastic according to the preamble of claim 1. Such tube closures are known in a wide variety of embodiments and are customary and e.g. in DE-A1-93 00 042 of the applicant.

Das Tuben-Gewinde wird dabei entweder am Tubenhals angeformt oder einstückig mit dem Tubenhals ausgebildet. Andererseits sind auch Lösungen bekannt, bei denen die Tube selbst kein Gewinde trägt und ein Gewindeteil z.B. formschlüssig auf einen gewindelosen Ansatz an der Tubenschulter aufgeschnappt oder anderweitig mit der Tube verbunden wird. Das Garantieband ist abreissbar mit dem Tubenhals verbunden. Bei aufgesetzter Schraubkappe steht das Garantieband derart mit der Schraubkappe in Eingriff, dass es beim erstmaligen Oeffnen der Tube abreisst. In der Regel weist die Schraubkappe an ihrem unteren Rand einen radial auswärts abstehenden Wulst auf, den das Garantieband bei aufgesetzer Schraubkappe übergreift. Beim Oeffnen wird das Garantieband durch diesen Wulst nach oben gezogen, so dass es vom Tubenhals abreisst.The tube thread is either molded onto the tube neck or formed in one piece with the tube neck. On the other hand, solutions are also known in which the tube itself has no thread and a threaded part e.g. is snapped onto a threadless attachment on the tube shoulder or is otherwise connected to the tube. The guarantee tape is tear-off connected to the tube neck. When the screw cap is attached, the guarantee band engages with the screw cap in such a way that it tears off when the tube is opened for the first time. As a rule, the screw cap has a radially outwardly projecting bead on its lower edge, which extends over the guarantee band when the screw cap is fitted. When opened, the guarantee band is pulled up by this bead so that it tears off the tube neck.

Bei den bekannten, ringförmig umlaufenden Garantiebändern führt dies dazu, dass das Garantieband beim Oeffnen vollständig vom Tubenhals abgerissen wird und auf der Schraubkappe verbleibt. Nach dem Wiederverschliessen eines solchen Verschlusses kann das Garantieband wieder seine ursprüngliche Lage einnehmen, so dass man der Tube das erstmalige Oeffnen kaum ansieht. Um dies zu vermeiden, muss der Garantiering nach dem Oeffnen der Tube von Hand über das obere Ende der Schraubkappe abgenommen werden. Diese Art von Garantieband kann daher bei T-förmigen oder anderen nach oben grösser werdenden Schraubkappen nicht verwendet werden, da das Band dann nicht abgenommen werden kann und somit auch nach dem Oeffnen fest mit der Schraubkappe verbunden bleiben würde.In the case of the known ring-shaped guarantee bands, this leads to the guarantee band being torn off completely from the tube neck when it is opened and remaining on the screw cap. After resealing such a closure, the guarantee band can return to its original position, so that the tube can hardly be seen when it is opened for the first time. To avoid this, the guarantee ring must be removed by hand after opening the tube over the upper end of the screw cap. This type of guarantee tape can therefore not be used with T-shaped or other screw caps that increase in size because the tape then can not be removed and thus would remain firmly connected to the screw cap even after opening.

Der Erfindung liegt die Aufgabe zugrunde, die Konstruktion eines solchen Tubenverschlusses mit einem Garantieband derart zu verbessern, dass das Garantieband einerseits funktionstüchtig das erstmalige Öffnen anzeigt und nach einer Manipulation nicht wieder einfach über den Tubenhals gelegt und auf diesem verklemmt werden kann, und andererseits konstruktiv einfach herstellbar und am Tubenverschluss anbringbar ist.The invention has for its object to improve the construction of such a tube closure with a guarantee tape in such a way that the guarantee tape on the one hand shows the first opening in working order and after manipulation cannot simply be placed over the tube neck again and jammed on it, and on the other hand it is structurally simple can be produced and attached to the tube closure.

Erfindungsgemäss wird diese Aufgabe gemäss Kennzeichen der Patentansprüche gelöst. Die Erfindung sieht dabei auf optimal einfache Weise vor, das Garantieband durch wenigstens zwei Trennschlitze derart zu unterteilen, dass es bei einer Beschädigung in wenigstens zwei abstehende Garantieband-Segmente aufteilt. Beim erstmaligen Oeffnen der Schraubkappe werden die Garantieband-Segmente so weit abgerissen, bis sie die Schraubkappe freigeben. Sie werden dabei nicht vollständig abgerissen und bleiben auch nach dem Oeffnen durch wenigstens ein Verbindungselement mit dem Tubenhals verbunden. Sie müssen daher vom Verbraucher vollständig entfernt werden, was zur Bewusstseinsbildung der Erstöffnung führt. Das erstmalige Oeffnen wird durch die abstehenden Garantieband-Segmente deutlich angezeigt und gleichzeitig haben die einzelnen Segmente gegenüber einem umlaufenden Garantiering den Vorteil, dass sie von der Schraubkappe getrennt werden, so dass auch T-förmige Verschlusskappen verwendet werden können und nach dem Wiederverschliessen der Tube deutlich erkennbar ist, dass diese bereits einmal geöffnet wurde.According to the invention, this object is achieved according to the characteristics of the claims. The invention provides in an optimally simple way to subdivide the guarantee band by at least two separating slots in such a way that it divides into at least two protruding guarantee band segments in the event of damage. When the screw cap is opened for the first time, the guarantee tape segments are torn off until they release the screw cap. They are not completely torn off and remain connected to the tube neck by at least one connecting element even after opening. They must therefore be completely removed by the consumer, which leads to awareness raising of the first opening. The opening for the first time is clearly indicated by the protruding band segments and at the same time the individual segments have the advantage over a circumferential ring that they can be separated from the screw cap, so that T-shaped caps can also be used and become clear after the tube is closed again it can be seen that this has already been opened once.

Die abreissbare Verbindung zwischen dem Garantieband und dem Tubenhals kann auf unterschiedliche Art hergestellt werden. Bei Tuben mit einem aufgesetzten Gewindeteil aus Kunststoff ist es bekannt, das Garantieband durch Verbindungselemente einstückig mit dem Gewindeteil zu verbinden. Dieselbe Möglichkeit besteht auch bei den immer häufiger eingesetzten, gänzlich aus Kunststoff bestehenden Tuben. Eine vorteilhafte Alternative besteht darin, einen zusätzlichen Ring zu verwenden, der auf das Tubengewinde aufgeschraubt wird oder hinter dem Gewinde einrastet. In diesem Fall wird das Garantieband durch Verbindungselemente mit diesem Ring verbunden.The tear-off connection between the guarantee band and the tube neck can be made in different ways. In the case of tubes with an attached threaded part made of plastic, it is known to connect the guarantee band in one piece to the threaded part by means of connecting elements. The same possibility also exists for the increasingly common tubes made entirely of plastic. An advantageous alternative is to use an additional ring which is screwed onto the tube thread or snaps behind the thread. In this case, the guarantee band is connected to this ring by connecting elements.

Die Empfindlichkeit des Garantiebands ist in starkem Masse von der Tiefe der Trennschlitze abhängig. Diese müssen in jedem Fall so tief sein, dass sich das Garantieband beim erstmaligen Oeffnen in einzelne Segmente aufteilt. Bei einer bevorzugten Ausführungsform wird das Garantieband durch die Trennschlitze vollständig unterteilt, so dass es bereits vor dem erstmaligen Oeffnen aus mehreren, nicht direkt miteinander verbundenen Garantieband-Segmenten besteht. Jedes dieser Segmente wird durch wenigstens zwei Verbindungselemente in seiner Position gehalten.The sensitivity of the guarantee tape depends to a large extent on the depth of the separating slots. In any case, these must be so deep that the guarantee band is divided into individual segments when it is opened for the first time. In a preferred embodiment, the guarantee band is completely subdivided by the separating slots, so that it already consists of several guarantee band segments that are not directly connected to one another before opening for the first time. Each of these segments is held in position by at least two connecting elements.

Besonders sicher zerfällt das Garantieband nach einer Manipulation, wenn am Garantieband radial nach innen gerichtete Festhalteelemente vorgesehen sind und wenn die Schraubkappe wenigstens einen radial nach aussen gerichteten Wulst oder Vorsprung trägt, über den die Festhalteelemente formschlüssig einrasten können, sobald die Trennschlitze in die Ausgangslage zurückschnappen.The tamper-evident band disintegrates particularly safely after manipulation if the guarantee band has radially inwardly directed retaining elements and if the screw cap carries at least one radially outwardly directed bead or projection, via which the retaining elements can engage in a form-fitting manner as soon as the separating slots snap back into the starting position.

Das Garantieband lässt sich besonders stabil ausbilden und fest mit einem Haltering bzw. dem Gewinde oder dem Tubenhals verbinden, wenn auf beiden Seiten der Trennschlitze je ein Verbindungselement vorgesehen ist. Ausserdem stehen die Einzelsegmente des Garantiebands nach dem Reissen der Verbindungselemente auf diese Weise auffällig insbesondere in axialsymmetrischer Form ab. Bei einer besonders bevorzugten Ausführungsform wird jedes Garantieband-Segment durch zwei Verbindungselemente gehalten, wobei an jedem Ende des Garantieband-Segments eines der Verbindungselemente angeordnet ist. Damit ist sichergestellt, dass das Segment nach dem Bruch von einem seiner Verbindungselemente nur noch an einem Ende mit dem Tubenhals verbunden ist, so dass die Verletzung deutlich sichtbar ist.The guarantee band can be made particularly stable and firmly connected to a retaining ring or the thread or the tube neck if a connecting element is provided on each side of the separating slots. In addition, the individual segments of the guarantee band protrude conspicuously, in particular in an axially symmetrical form, after the connecting elements have torn. In a particularly preferred embodiment, each guarantee band segment is held by two connecting elements, one of the connecting elements being arranged at each end of the guarantee band segment is. This ensures that the segment is only connected to the tube neck at one end after the breakage of one of its connecting elements, so that the injury is clearly visible.

Es kann vorkommen, dass beim Oeffnen des Verschlusses beide Verbindungselemente eines solchen Segments gleichzeitig brechen. Das betreffende Segment fällt in einem solchen Fall von selbst weg, was insbesondere bei Lebensmitteln wie z.B. Mayonnaise oder Senf enthaltenden Tuben, die bei der Zubereitung von Speisen verwendet werden, ein Nachteil ist: bei Unachtsamkeit des Verbrauchers könnte ein Garantieband-Segment unbemerkt in eine zubereitete Speise fallen. Um dies zu vermeiden und sicherzustellen, dass nur eines der beiden Verbindungselemente bricht, werden diese bevorzugt unterschiedlich stark ausgeprägt, so dass beim Oeffnen nur das schwächere bricht.It can happen that both connecting elements of such a segment break at the same time when the closure is opened. In such a case, the relevant segment will automatically disappear, which is particularly the case with foods such as Tubes containing mayonnaise or mustard, which are used in the preparation of dishes, have one disadvantage: if the consumer is careless, a guarantee band segment could fall unnoticed into a prepared dish. In order to avoid this and to ensure that only one of the two connecting elements breaks, these are preferably of different strengths, so that only the weaker one breaks when opened.

Die Verwendung unterschiedlich starker Abreissstege als Verbindungselemente zwischen dem Garantieband und dem Tubenhals (Haltering, Gewindeaufsatz etc.) hat sich jedoch auch ganz allgemein bewährt: Derartige Stege lassen sich einerseits so ausbilden, dass eine für die Montage ausreichend feste Verbindung zwischen einem Haltering und dem Garantieband besteht, dass ausserdem bei der Herstellung im Spritzgussverfahren das Garantieband über die Abreissstege geführt wird und dass andererseits beim erstmaligen Öffnen die Stege zuverlässig reissen und damit das Öffnen anzeigen. Besonders bewährt hat sich die Anordnung von zwei etwa diametral gegenüberliegend angeordneten Trennschlitzen, die ein ringförmig umlaufendes Garantieband in zwei Halbkreissegmente unterteilen.However, the use of tear-off webs of different thicknesses as connecting elements between the guarantee band and the tube neck (retaining ring, threaded attachment, etc.) has also proven itself in general is that the guarantee tape is also passed over the tear-off bars during injection molding and that, on the other hand, the bars tear reliably when they are opened for the first time, thus indicating that they have been opened. The arrangement of two separating slots arranged approximately diametrically opposite each other, which divide a ring-shaped guarantee band into two semicircle segments, has proven particularly useful.

Besonders sicher lässt sich der Schraubverschluss mit dem Garantieband sichern, wenn am Garantieband ein axial gegen den Tubenverschluss gerichteter Widerhaken vorgesehen ist.The screw cap can be secured particularly securely with the guarantee band if there is a barb axially directed against the tube closure on the guarantee band.

Die Erfindung ist im folgenden in Ausführungsbeispielen anhand der Zeichnungen näher erläutert. Es zeigen:

Figur 1
die schematische Darstellung der Schraubkappe eines Tubenverschlusses,
Figur 2
die schematische Darstellung eines zu der in Figur 1 gezeigten Schraubkappe korrespondierenden Tubenhalses mit Garantiering,
Figur 3
einen Tubenverschluss bestehend aus der in Figur 1 gezeigten Schraubkappe und dem in Figur 2 dargestellten Tubenhals mit Garantiering während dem erstmaligen Verschliessen,
Figur 4
den bereits in Figur 4 gezeigten Tubenverschluss im verschlossenen Zustand,
Figur 5
den in Figur 2 gezeigten Tubenhals in der Ansicht von oben,
Figuren 6 und 7
den Zustand des bereits in den Figuren 2 und 3 gezeigten Tubenhalses mit Garantieband nach dem erstmaligen Oeffnen des Verschlusses,
Figur 8
eine Seitenansicht des Tubenhalses von Figur 2, und
Figur 9
einen Tubenhals mit einem Garantieband mit drei Trennschlitzen aus der Sicht von oben.
The invention is explained below in exemplary embodiments with reference to the drawings. Show it:
Figure 1
the schematic representation of the screw cap of a tube closure,
Figure 2
1 shows a schematic representation of a tube neck with a guarantee ring corresponding to the screw cap shown in FIG. 1,
Figure 3
1 a tube closure consisting of the screw cap shown in FIG. 1 and the tube neck shown in FIG. 2 with a guarantee ring during the initial closure,
Figure 4
the tube closure already shown in FIG. 4 in the closed state,
Figure 5
the tube neck shown in Figure 2 in the view from above,
Figures 6 and 7
the condition of the tube neck already shown in FIGS. 2 and 3 with the guarantee band after the first opening of the closure,
Figure 8
a side view of the tube neck of Figure 2, and
Figure 9
a tube neck with a guarantee band with three separating slots from the view from above.

Die in Figur 1 schematisch dargestellte Schraubkappe 6 dient zum Verschliessen des in Figur 2 ebenfalls schematisch dargestellten Tubenhalses 1 und bildet daher zusammen mit diesem einen Tubenverschluss. Der Tubenhals 1 weist ein Aussengewinde 3 auf und an der Schraubkappe 6 ist ein dazu korrespondierendes Innengewinde 5 vorgesehen.The screw cap 6 shown schematically in FIG. 1 serves to close the tube neck 1, also shown schematically in FIG. 2, and therefore forms a tube closure together with the latter. The tube neck 1 has an external thread 3 and on the screw cap 6 there is a corresponding one Internal thread 5 provided.

An dem in Figur 2 gezeigten Tubenhals 1 ist ein ringförmig umlaufendes Garantieband 10 befestigt, das koaxial zum Gewinde 3 verläuft. Die Verbindung zwischen dem Garantieband 10 und dem Tubenhals 1 wird in diesem Beispiel durch einen das Gewinde 3 untergreifenden Ring 4 hergestellt, an welchem das Garantieband 10 mittels als Verbindungselement dienenden Abreissstegen 9, 9a befestigt ist. Das Garantieband 10 weist an seinem oberen Ende radial nach innen gerichtete Festhalteelemente 11 auf, die im Querschnitt die Form eines Widerhakens haben, und deren Innendurchmesser kleiner ist als der Aussendurchmesser eines am unteren Rand der Schraubkappe 6 nach aussen vorstehenden Vorsprungs 8. Die Festhalteelemente 11 bilden bei aufgesetzter Schraubkappe eine formschlüssige Verbindung mit dem Vorsprung 8 der Schraubkappe, welche nur durch Zerstören des Garantiebandes gelöst werden kann.On the tube neck 1 shown in FIG. 2, an annular guarantee band 10 is attached, which extends coaxially to the thread 3. In this example, the connection between the guarantee band 10 and the tube neck 1 is established by a ring 4 engaging under the thread 3, to which the guarantee band 10 is fastened by means of tear-off webs 9, 9a serving as a connecting element. The guarantee band 10 has at its upper end radially inwardly directed retaining elements 11 which have the shape of a barb in cross-section and whose inside diameter is smaller than the outside diameter of a projection 8 projecting outwards at the lower edge of the screw cap 6 with the screw cap on, a positive connection with the projection 8 of the screw cap, which can only be released by destroying the guarantee band.

Beim erstmaligen Aufschrauben der Schraubkappe 6 wird der obere Rand des Garantiebands durch den Vorsprung 8 der Schraubkappe elastisch nach aussen gedrückt, so dass die Festhalteelemente 11 bei fortgesetzter Aufschraubbewegung über den Vorsprung 8 schnappen. Dieser Aufschraubvorgang ist in Figur 3 dargestellt, Figur 4 zeigt den Tubenverschluss mit vollständig aufgeschraubter Schraubkappe 6, deren Vorsprung 8 von den Festhalteelementen 11 des Garantiebands 10 übergriffen wird.When the screw cap 6 is screwed on for the first time, the upper edge of the guarantee band is pressed elastically outwards by the projection 8 of the screw cap, so that the retaining elements 11 snap over the projection 8 when the screwing movement continues. This screwing operation is shown in FIG. 3, FIG. 4 shows the tube closure with the screw cap 6 fully screwed on, the projection 8 of which is overlapped by the retaining elements 11 of the guarantee band 10.

Aus Figur 5, die den Tubenhals und das Garantieband 10 von oben zeigt, ist ersichtlich, dass das Garantieband 10 durch zwei etwa vertikal verlaufende Trennschlitze 7 unterteilt ist. Die hier gezeigten Trennschlitze 7 durchtrennen das ringförmig umlaufende Garantieband 10 vollständig, so dass es sich im Grunde genommen um zwei voneinander unabhängige, halbkreisförmige Garantieband-Segmente handelt. Dies ist eine bevorzugte Ausführungsform, es wäre jedoch grundsätzlich auch möglich, die Tiefe der Trennschlitze 7 zu reduzieren, so dass Garantieband 10 im Bereich der Trennschlitze 7 lediglich geschwächt wäre und dann beim erstmaligen Oeffnen des Tubenverschlusses aufbrechen würde. Die beiden Garantieband-Segmente sind lediglich an ihren Enden durch Abreissstege 9, 9a mit dem inneren Ring 4 verbunden. Grundsätzlich könnten entlang den Garantieband-Segmenten weitere Abreissstege angeordnet werden. Die Beschränkung auf lediglich zwei an den Enden angeordneten Abreissstege 9, 9a hat jedoch den Vorteil, dass beim Oeffnen des Verschlusses einer der beiden Stege als erster reisst und somit sichergestellt ist, dass das Segment nach dem Oeffnen des Verschlusses nur noch an einem Ende mit dem Ring 4 verbunden ist, so dass es deutlich sichtbar absteht.From Figure 5, which shows the tube neck and the guarantee band 10 from above, it can be seen that the guarantee band 10 is divided by two approximately vertically extending separating slots 7. The separating slots 7 shown here completely cut through the ring-shaped guarantee band 10, so that it is basically two independent, semicircular guarantee band segments. This is a preferred embodiment, but in principle it would also be possible to reduce the depth of the separating slots 7, so that the guarantee band 10 would only be weakened in the area of the separating slots 7 and would then break open when the tube closure was first opened. The two guarantee band segments are only connected at their ends by tear-off webs 9, 9a to the inner ring 4. In principle, further tear-off webs could be arranged along the guarantee tape segments. However, the restriction to only two tear-off webs 9, 9a arranged at the ends has the advantage that when the closure is opened one of the two webs is the first to tear, thus ensuring that the segment only has one end at the end after the closure has been opened Ring 4 is connected so that it stands out clearly visible.

Bevorzugt werden die beiden Abreissstege 9, 9a unterschiedlich stark ausgebildet, so dass sichergestellt ist, dass einer der beiden Stege (der schwächere Steg 9) als erster reisst. Die Gefahr dass beide Stege 9, 9a gleichzeitig reissen, kann damit ausgeschlossen werden. Bevorzugt werden die stärkeren Abreissstege 9a und die schwächeren Abreissstege 9 so verteilt, dass von den an einen Trennschlitz 7 anschliessenden Segment-Enden jeweils eines durch einen stärkeren Steg 9a und das andere durch einen schwächeren Steg 9 mit dem inneren Ring 4 verbunden ist. Damit wird beim Oeffnen des Verschlusses ein regelmässiges Bild des aufgebrochenen Garantiebands erreicht, bei dem vorliegenden Beispiel mit zwei halbkreisförmigen Garantieband-Segmenten ergibt sich ein etwa axialsymmetrisches Bild.The two tear-off webs 9, 9a are preferably of different strengths, so that it is ensured that one of the two webs (the weaker web 9) is the first to tear. The risk that both webs 9, 9a tear at the same time can thus be excluded. The stronger tear-off webs 9a and the weaker tear-off webs 9 are preferably distributed such that one of the segment ends adjoining a separating slot 7 is connected to the inner ring 4 by a stronger web 9a and the other by a weaker web 9. This results in a regular image of the broken guarantee band when the closure is opened; in the present example with two semicircular guarantee band segments, an approximately axially symmetrical image is obtained.

Beim Oeffnen der Schraubkappe 6 läuft der Vorsprung 8 auf die Unterkante der Festhalteelemente 11 auf und nimmt diese solange nach oben mit, bis die Abreissstege 9 abreissen und das Garantieband freigeben. Da die Abreissstege 9 seitlich an der Innenfläche des Garantiebands 10 angeformt sind, wird beim Oeffnen eine Scherkraft auf die Abreissstege 9 ausgeübt, so dass diese zuverlässig reissen. Der Zustand des Garantiebands nach dem erstmaligen Oeffnen des Tubenverschlusses ist in den Figuren 6 und 7 dargestellt. Die unterschiedlich starke Ausprägung der Abreissstege 9, 9a führt dazu, dass nur die schwächeren Abreissstege 9 abreissen und die einzelnen Segmente durch die stärkeren Stege 9a mit dem inneren Ring 4 verbunden bleiben. Durch die bereits angesprochene, abwechselnde Anordnung von starken und schwachen Abreissstegen ergibt sich ein regelmässiges, im vorliegenden Fall axialsymmetrisches Bild des aufgebrochenen Garantiebands.When the screw cap 6 is opened, the projection 8 runs onto the lower edge of the holding elements 11 and takes it upwards until the tear-off webs 9 tear off and release the guarantee tape. Since the tear-off webs 9 are formed laterally on the inner surface of the guarantee band 10, a shear force is exerted on the tear-off webs 9 when opened, so that they tear reliably. The condition of the guarantee band after the first opening of the tube closure is shown in FIGS. 6 and 7. The different strengths of the tear-off webs 9, 9a mean that only the weaker tear-off webs 9 tear off and the individual segments remain connected to the inner ring 4 by the stronger webs 9a. The already mentioned, alternating arrangement of strong and weak tear-off webs results in a regular, in this case axially symmetrical, image of the broken guarantee band.

Da die Abreissstege 9 von der Aussenfläche des Rings 4 radial nach aussen stehen und in die Innenwand des Garantiebands 10 laufen, lässt sich der Ring 4 auch einfach in einem Spritzgusswerkzeug herstellen, das ohne radial öffnende Backen arbeitet. Der Ring 4 mit dem Garantieband 10 kann vorteilhaft aus einem Kunststoff mit anderer Farbe hergestellt werden als die Schraubkappe 6. Dadurch lässt sich die optische Anzeige vom Fehlen des Garantiebands 10 verbessern.Since the tear-off webs 9 are radially outward from the outer surface of the ring 4 and run into the inner wall of the guarantee band 10, the ring 4 can also be easily produced in an injection molding tool which works without radially opening jaws. The ring 4 with the guarantee band 10 can advantageously be made of a plastic with a different color than the screw cap 6. This allows the visual display of the absence of the guarantee band 10 to be improved.

Figur 8 zeigt die Seitenansicht des Tubenhalses von Figur 2. In dieser Darstellung ist insbesondere der durchgehende Trennschlitz 7 des Garantiebands 10 deutlich erkennbar, im unteren Bereich des Trennschlitzes 7 ist ein Ausschnitt des innerhalb von Garantieband 10 angeordneten Rings 4 sichtbar.FIG. 8 shows the side view of the tube neck of FIG. 2. In this illustration, in particular the continuous separating slot 7 of the guarantee band 10 can be clearly seen, in the lower region of the separating slot 7 a section of the ring 4 arranged within the guarantee band 10 is visible.

Schliesslich ist in Figur 9 ein Tubenhals mit einer alternativen Ausführungsvariante des Garantiebands dargestellt, welches drei Trennschlitze 7a aufweist und aus drei gleich grossen Garantieband-Segmenten 12 besteht.Finally, FIG. 9 shows a tube neck with an alternative embodiment variant of the guarantee band, which has three separating slots 7a and consists of three guarantee band segments 12 of the same size.

Claims (10)

Tubenverschluss mit einem Gewinde (3) auf einem Tubenhals (1), das durch eine Schraubkappe (6) verschliessbar ist, wobei am Tubenhals (1) mittels abreissbarer Verbindungselemente (9, 9a) ein frei abstehendes Garantieband (10) befestigt ist, welches derart mit der Schraubkappe in Eingriff steht, dass das Garantieband (10) beim Öffnen der Schraubkappe (6) von den Verbindungselementen (9, 9a) trennbar ist, dadurch gekennzeichnet, dass das Garantieband (10) durch wenigstens zwei Trennschlitze (7) in wenigstens zwei Segmente unterteilt ist.Tube closure with a thread (3) on a tube neck (1), which can be closed by a screw cap (6), a free-standing guarantee band (10), which is attached to the tube neck (1) by means of tear-off connecting elements (9, 9a) is in engagement with the screw cap, that the guarantee band (10) can be separated from the connecting elements (9, 9a) when the screw cap (6) is opened, characterized in that the guarantee band (10) by at least two separation slots (7) in at least two Segments is divided. Tubenverschluss nach Anspruch 1, dadurch gekennzeichnet, dass auf beiden Seiten des Trennschlitzes (7) je mind. ein Verbindungselement (9, 9a) vorgesehen ist.Tube closure according to claim 1, characterized in that at least one connecting element (9, 9a) is provided on each side of the separating slot (7). Tubenverschluss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Trennschlitz (7) das Garantieband (10) vollständig unterteilt.Tube closure according to claim 1 or 2, characterized in that the separating slot (7) completely divides the guarantee band (10). Tubenverschluss nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Verbindungselemente (9, 9a) unterschiedlich widerstandsfähig ausgebildet sind.Tube closure according to one of the preceding claims, characterized in that the connecting elements (9, 9a) are designed to be differently resistant. Tubenverschluss nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Trennschlitz (7) parallel zur Längsachse des Gewindes (3) verläuft.Tube closure according to one of the preceding claims, characterized in that the separating slot (7) runs parallel to the longitudinal axis of the thread (3). Tubenverschluss nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass das am Garantieband vorgesehene Verbindungselement (11) als axial gegen den Tubenverschluss (6) gerichteter Widerhaken ausgebildet ist.Tube closure according to one of the preceding claims, characterized in that the connecting element (11) provided on the guarantee band is designed as a barb axially directed against the tube closure (6). Tubenverschluss nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass das Garantieband (10) mit den Verbindungselementen (9) und einem zur Montage auf dem Gewinde (3) dienenden Ring (3d) einstückig ausgebildet ist.Tube closure according to one of the preceding claims, characterized in that the guarantee band (10) is formed in one piece with the connecting elements (9) and a ring (3d) used for mounting on the thread (3). Tubenverschluss nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass jedes der Garantieband-Segmente mittels zwei abreissbarer Verbindungselemente (9, 9a) am Gewinde befestigt ist, wobei an jedem Ende des Garantieband-Segments eines der Verbindungselemente (9, 9a) angeordnet ist.Tube closure according to one of claims 1 to 7, characterized in that each of the guarantee band segments is fastened to the thread by means of two tear-off connecting elements (9, 9a), one of the connecting elements (9, 9a) being arranged at each end of the guarantee band segment . Tubenverschluss nach Anspruch 8, dadurch gekennzeichnet, dass die zwei abreissbaren Verbindungselemente jedes Garantieband-Segments unterschiedlich widerstandsfähig ausgebildet sind.Tube closure according to claim 8, characterized in that the two tear-off connecting elements of each guarantee band segment are designed to be differently resistant. Tubenverschluss nach Anspruch 9, dadurch gekennzeichnet, dass die an einen Trennschlitz (7) angrenzenden Enden der Garantieband-Segmente durch unterschiedlich widerstandsfähige Verbindungselemente (9, 9a) am Tubenhals befestigt sind.Tube closure according to claim 9, characterized in that the ends of the guarantee band segments adjoining a separating slot (7) are fastened to the tube neck by connecting elements (9, 9a) of different resistance.
EP95810180A 1994-03-25 1995-03-17 Tube closure made of plastic with garantee strip Expired - Lifetime EP0673849B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH89694 1994-03-25
CH896/94 1994-03-25

Publications (2)

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EP0673849A1 true EP0673849A1 (en) 1995-09-27
EP0673849B1 EP0673849B1 (en) 1998-05-27

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EP95810180A Expired - Lifetime EP0673849B1 (en) 1994-03-25 1995-03-17 Tube closure made of plastic with garantee strip

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EP (1) EP0673849B1 (en)
AT (1) ATE166625T1 (en)
DE (1) DE59502301D1 (en)
ES (1) ES2116704T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735419A (en) * 1996-02-16 1998-04-07 Crown Cork & Seal Company, Inc. Resealable plastic snap-fit closure with anti-tamper function
WO2007085927A3 (en) * 2006-01-27 2007-10-25 Sacmi Closure means
CN117326197A (en) * 2023-12-01 2024-01-02 烟台昌友玻璃科技有限公司 Anti-fake bottle cap

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290364A1 (en) * 1974-11-08 1976-06-04 Astra Plastique Bottle stopper with safety ring - has ring held inside skirt of stopper by radial rim
EP0018928A1 (en) * 1979-04-27 1980-11-12 ASTRA PLASTIQUE Société Anonyme Closure caps with sealing strip
EP0262868A2 (en) * 1986-09-25 1988-04-06 National Plastics Limited Guarantee band for a container closure
EP0507706A1 (en) * 1991-04-02 1992-10-07 Astra Plastique Screw top closure with tamperband
FR2685907A3 (en) * 1992-01-08 1993-07-09 Obrist Co Ag H Threaded end-piece made of synthetic material for placing on the neck of a tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290364A1 (en) * 1974-11-08 1976-06-04 Astra Plastique Bottle stopper with safety ring - has ring held inside skirt of stopper by radial rim
EP0018928A1 (en) * 1979-04-27 1980-11-12 ASTRA PLASTIQUE Société Anonyme Closure caps with sealing strip
EP0262868A2 (en) * 1986-09-25 1988-04-06 National Plastics Limited Guarantee band for a container closure
EP0507706A1 (en) * 1991-04-02 1992-10-07 Astra Plastique Screw top closure with tamperband
FR2685907A3 (en) * 1992-01-08 1993-07-09 Obrist Co Ag H Threaded end-piece made of synthetic material for placing on the neck of a tube

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735419A (en) * 1996-02-16 1998-04-07 Crown Cork & Seal Company, Inc. Resealable plastic snap-fit closure with anti-tamper function
WO2007085927A3 (en) * 2006-01-27 2007-10-25 Sacmi Closure means
CN101389543B (en) * 2006-01-27 2010-09-22 萨克米伊莫拉机械合作社合作公司 Closure means
US8528759B2 (en) 2006-01-27 2013-09-10 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Closure means
CN117326197A (en) * 2023-12-01 2024-01-02 烟台昌友玻璃科技有限公司 Anti-fake bottle cap
CN117326197B (en) * 2023-12-01 2024-02-06 烟台昌友玻璃科技有限公司 Anti-fake bottle cap

Also Published As

Publication number Publication date
DE59502301D1 (en) 1998-07-02
EP0673849B1 (en) 1998-05-27
ES2116704T3 (en) 1998-07-16
ATE166625T1 (en) 1998-06-15

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