EP0281514B2 - Closure cap with a warranty strap - Google Patents
Closure cap with a warranty strap Download PDFInfo
- Publication number
- EP0281514B2 EP0281514B2 EP88810061A EP88810061A EP0281514B2 EP 0281514 B2 EP0281514 B2 EP 0281514B2 EP 88810061 A EP88810061 A EP 88810061A EP 88810061 A EP88810061 A EP 88810061A EP 0281514 B2 EP0281514 B2 EP 0281514B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tongues
- cap
- closure cap
- guarantee strip
- guarantee
- 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.)
- Expired - Lifetime
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Classifications
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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
- 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
- B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
- B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
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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
- 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
Definitions
- the invention relates to a closure cap for closing a container mouth according to the preamble of claim 1.
- closure caps have a guarantee function in that a first removal of the closure cap is indicated by tearing off the guarantee band.
- the type mentioned are so-called mechanical guarantee bands, which automatically snap under the bulge at the bottle mouth when screwed on for the first time.
- a problem with the guarantee bands provided with spring-back tongues is that the axial force component when opening them can become so large that the tongues spring back when unscrewed and slide over the bead again, so that the guarantee band does not tear off.
- the caps are usually made of thermoplastic material by injection molding, whereby the material properties can change significantly depending on the ambient temperature.
- the tongues can have a much greater flexibility in summer temperatures, which impairs their locking function.
- a too massive formation of the tongues is not possible, since this would cause the guarantee band to stretch too much when the container mouth is closed for the first time.
- US Pat. No. 4,550,843 and US Pat. No. 4,635,808 disclose comparable sealing caps in which the tongues can be supported on an underlying circumferential bead when the cap is opened, thus increasing the tear resistance.
- the circumferential support bead below the tongues leads to a massive reinforcement of the guarantee band and thus to poor extensibility in the circumferential direction. This makes it difficult to put the screw cap on the bottle mouth for the first time.
- the known screw caps are also rather disadvantageous with regard to the production technology, since the combination of tongues / support bead can only be removed from the mold with complex, radially opening slide tools.
- This object is achieved according to the invention with a closure cap which has the features of patent claim 1.
- the support cams under the tongues practically do not hinder the installation process, since the guarantee band can be stretched to a limited extent when it is first put on.
- the tongues can be freely bent back upwards until they spring back under the bulge and thus reach under the bulge.
- the cams support the tongues on their lower flanks, so that bending back down is only possible to a limited extent.
- the forces acting in the axial direction increase in such a way that the guarantee band tears off before the guarantee band could slide over the bulge at the container mouth due to overstretching.
- the latching action of the tongues can be increased further by a latching edge being arranged on the inside of the guarantee band approximately in the plane of the tongues.
- this locking edge which is designed as a taper of the inside diameter, the tear-off forces can be adapted exactly to the respective conditions.
- the guarantee band slides particularly easily over the bead on the container mouth when the support cams taper towards the lower edge of the guarantee band.
- the support cams are arranged at a distance from the tongues, the flexibility of the tongues which is desired per se is in no way impaired when it is first put on.
- the tongues are particularly advantageously designed such that they protrude inward in the radial direction beyond the support cams. In this way, the locking function of the tongues is increased, since in extreme cases the tongues wrap around the outer edges of the support cams and thus bring about a substantial reduction in diameter.
- the tongues are advantageously arranged between the predetermined breaking bars.
- the predetermined breaking bars are not subjected to excessive force when the cap is put on for the first time, since the guarantee band can expand radially better.
- the guarantee band could also be connected to the lower edge of the cap via a thin material film.
- a vertical predetermined breaking point is advantageously arranged on the guarantee band, so that the guarantee band does not remain under the bead on the bottle mouth after tearing off.
- the tear-off process can be controlled particularly optimally if a tongue is arranged closer to the vertical predetermined breaking point in the unscrewing direction than in the unscrewing direction.
- a closure cap 1 consists of a cap base 11 and a cylindrical cap side wall 12, which is provided with an internal thread 13.
- Various mouth seals 14 can be arranged on the cap base or in the transition region between the cap base and the side wall of the cap.
- a guarantee band 3 is arranged, which is connected to the cap via predetermined breaking webs 9.
- the closure cap does not necessarily have to be a screw cap. A so-called snap lock could also be provided with a guarantee tape according to the invention.
- tongues 6 projecting inwards are arranged on the inner wall 5 of the guarantee band at certain intervals.
- the tongues taper slightly in cross-section towards their outer end and are inclined slightly downwards, which means that the demolding from an axially opening Tool is facilitated.
- a support cam 7 is arranged at a certain distance, which tapers downwards.
- Each support cam extends approximately the entire length of a tongue, but has an approximately crescent-shaped configuration when viewed from above.
- a locking edge 8 runs over the entire circumference, which is designed as a tapering of the diameter of the inner wall 5. The locking edge improves the retention effect of the tongues 6.
- the tongues do not have to be distributed over the circumference at regular intervals.
- a vertical predetermined breaking point 10 is additionally provided on the guarantee band, it may be expedient to arrange the tongues at different distances.
- a tongue 6a is provided in FIG. 2, which is closer to the vertical predetermined breaking point 10 in the unscrewing direction A than the tongue 6b in the unscrewing direction B.
- no support cam 7 is provided on the tongue 6b, so that this tongue can bend back more than the other tongues .
- the tongues with support cams are distributed over a section of 180 °, the tongue 6c being arranged approximately diametrically opposite the vertical predetermined breaking point 10.
- an axially extending rim 15 can be provided on the outside, as it usually also has the cap side wall 12.
- FIG. 3 shows the position of a tongue 6 when the closure cap is screwed on for the first time, the guarantee band 3 being pushed downward in the direction of the arrow C against the bead 4 at the container mouth 2.
- container mouths are standardized in particular for bottles for soft drinks, so that they are always the same Dimensions and tolerances can be found.
- the inside diameter of the guarantee band and the length of the tongues are dimensioned in such a way that the guarantee band can be pushed over the bead 4 with a slight stretch in the circumference without destroying the predetermined breaking webs 9.
- FIG. 6 shows the position of the tongues when a force component acts on the guarantee band in the direction of arrow D when the closure cap is removed for the first time.
- the tongues have the tendency to bend back downward, but are supported by the support cams 7. Overcoming the bead 4 would obviously only be possible by excessive stretching of the guarantee band, since the tongues are blocked towards the bottom.
- the predetermined breaking webs 9 tear, as shown in FIG. 6.
- the guarantee band is preferably connected to the lower edge of the cap via a single, reinforced growth web, so that it can be completely removed from the mouth of the container after the vertical predetermined breaking point has torn.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Cartons (AREA)
Abstract
Description
Die Erfindung betrifft eine Verschlusskappe zum Verschliessen einer Behältermündung gemäss dem Oberbegriff von Anspruch 1. Derartige Verschlusskappen haben eine Garantiefunktion, indem ein erstmaliges Entfernen der Verschlusskappe durch ein Abreissen des Garantiebandes angezeigt wird. Im Gegensatz zu den warmschrumpfbaren Garantiebändern handelt es sich beim genannten Typ um sogenannte mechanische Garantiebänder, die beim erstmaligen Aufschrauben selbständig unter dem Wulst an der Flaschenmündung einrasten.The invention relates to a closure cap for closing a container mouth according to the preamble of claim 1. Such closure caps have a guarantee function in that a first removal of the closure cap is indicated by tearing off the guarantee band. In contrast to the heat-shrinkable guarantee bands, the type mentioned are so-called mechanical guarantee bands, which automatically snap under the bulge at the bottle mouth when screwed on for the first time.
Ein Problem bei den mit zurückfedernden Zungen versehenen Garantiebändern besteht darin, dass die axiale Kraftkomponente beim Oeffnen derart gross werden kann, dass die Zungen auch beim Abschrauben zurückfedern und wieder über den Wulst gleiten, so dass das Garantieband nicht abreisst. Die Verschlusskappen werden in der Regel aus thermoplastischem Material im Spritzgussverfahren hergestellt, wobei sich die Materialeigenschaften je nach Umgebungstemperatur stark verändern können. So können die Zungen bei sommerlichen Temperaturen eine wesentlich grössere Flexibilität aufweisen, wodurch ihre Sperrfunktion beeinträchtigt wird. Anderseits ist eine zu massive Ausbildung der Zungen nicht möglich, da dies beim erstmaligen Verschliessen der Behältermündung eine zu grosse Dehnung des Garantiebandes hervorrufen würde.A problem with the guarantee bands provided with spring-back tongues is that the axial force component when opening them can become so large that the tongues spring back when unscrewed and slide over the bead again, so that the guarantee band does not tear off. The caps are usually made of thermoplastic material by injection molding, whereby the material properties can change significantly depending on the ambient temperature. For example, the tongues can have a much greater flexibility in summer temperatures, which impairs their locking function. On the other hand, a too massive formation of the tongues is not possible, since this would cause the guarantee band to stretch too much when the container mouth is closed for the first time.
Durch die US-A-4,550,844 ist eine gattungsmässig vergleichbare Verschlusskappe bekannt geworden, bei der die Zungen am Ende dicker ausgebildet sind als an der Ansatzstelle. Damit soll erreicht werden, dass sich das verdickte Ende besser unter dem Wulst an der Behältermündung abstützt, so dass ein Zurückbiegen beim Entfernen der Verschlusskappe vermieden wird. Anderseits wird durch die verdünnte Ansatzstelle aber die Scharnierwirkung der Zungen erhöht, wodurch doch wieder die Gefahr eines vollständigen Zurückbiegens der Zungen in die ursprüngliche Ausgangslage besteht. Ausserdem lässt sich das verdickte Ende der Zungen werkzeugtechnisch nur schwierig entformen.From US-A-4,550,844 a generic cap is known in which the tongues are thicker at the end than at the attachment point. This is to ensure that the thickened end is better supported under the bead at the container mouth, so that a Bending back when removing the cap is avoided. On the other hand, the hinge effect of the tongues is increased by the thinned attachment point, whereby there is again the risk of the tongues completely bending back into the original starting position. In addition, the thickened end of the tongues is difficult to demold using tools.
Schliesslich sind durch die US-A-4,550, 843 und durch die US-A-4,635,808 gattungsmässig vergleichbare Verschlusskappen bekannt geworden, bei denen die Zungen beim Öffnen der Kappe auf einen darunterliegenden umlaufenden Wulst abgestützt werden können, womit der Abreisswiderstand erhöht wird. Der umlaufende Stützwulst unterhalb der Zungen führt jedoch zu einer massiven Verstärkung des Garantiebandes und damit zu einer schlechten Dehnbarkeit in Umfangsrichtung. Dies erschwert das erstmalige Aufsetzen der Schraubkappe auf die Flaschenmündung. Auch bezüglich der Herstellungstechnik sind die bekannten Schraubkappen eher nachteilig, da die Kombination Zungen/Stützwulst nur mit aufwendigen, radial öffnenden Schieberwerkzeugen entformt werden kann.Finally, US Pat. No. 4,550,843 and US Pat. No. 4,635,808 disclose comparable sealing caps in which the tongues can be supported on an underlying circumferential bead when the cap is opened, thus increasing the tear resistance. However, the circumferential support bead below the tongues leads to a massive reinforcement of the guarantee band and thus to poor extensibility in the circumferential direction. This makes it difficult to put the screw cap on the bottle mouth for the first time. The known screw caps are also rather disadvantageous with regard to the production technology, since the combination of tongues / support bead can only be removed from the mold with complex, radially opening slide tools.
Es ist daher eine Aufgabe der Erfindung, eine Verschlusskappe der eingangs genannten Art zu schaffen, bei welcher die Zungen beim erstmaligen Verschliessen der Behältermündung mit möglichst geringem Widerstand über den Wulst gleiten, wobei die einmal eingerasteten Zungen jedoch nicht mehr in die entgegengesetzte Richtung verbogen werden können. Diese Aufgabe wird erfindungsgemäss mit einer Verschlusskappe gelöst, welche die Merkmale von Patentanspruch 1 aufweist. Die Stütznocken unter den Zungen behindern den Aufsetzvorgang praktisch nicht, da das Garantieband beim erstmaligen Aufsetzen in einem beschränkten Ausmass dehnbar ist. Die Zungen können ungehindert gegen oben zurückgebogen werden, bis sie unter dem Wulst wieder zurückfedern und so den Wulst untergreifen. Dagegen stützen die Nocken die Zungen an ihrer unteren Flanke ab, so dass ein Zurückbiegen nach unten nur begrenzt möglich ist. Die in Axialrichtung wirkenden Kräfte steigen dabei derart an, dass das Garantieband abreisst, bevor das Garantieband infolge Ueberdehnung über den Wulst an der Behältermündung gleiten könnte.It is therefore an object of the invention to provide a closure cap of the type mentioned, in which the tongues slide over the bead with the least possible resistance when the container mouth is closed for the first time, but the tongues once engaged can no longer be bent in the opposite direction . This object is achieved according to the invention with a closure cap which has the features of patent claim 1. The support cams under the tongues practically do not hinder the installation process, since the guarantee band can be stretched to a limited extent when it is first put on. The tongues can be freely bent back upwards until they spring back under the bulge and thus reach under the bulge. In contrast, the cams support the tongues on their lower flanks, so that bending back down is only possible to a limited extent. The forces acting in the axial direction increase in such a way that the guarantee band tears off before the guarantee band could slide over the bulge at the container mouth due to overstretching.
Die Rastwirkung der Zungen kann noch dadurch erhöht werden, dass auf der Innenseite des Garantiebandes etwa in der Ebene der Zungen eine Rastkante angeordnet ist. Mit dieser Rastkante, die als Verjüngung des Innendurchmessers ausgebildet wird, können die Abreisskräfte exakt den jeweiligen Bedingungen angepasst werden.The latching action of the tongues can be increased further by a latching edge being arranged on the inside of the guarantee band approximately in the plane of the tongues. With this locking edge, which is designed as a taper of the inside diameter, the tear-off forces can be adapted exactly to the respective conditions.
Das Garantieband gleitet beim erstmaligen Aufsetzen der Verschlusskappe besonders leicht über den Wulst an der Behältermündung, wenn die Stütznocken sich gegen den unteren Rand des Garantiebandes verjüngen.When the cap is put on for the first time, the guarantee band slides particularly easily over the bead on the container mouth when the support cams taper towards the lower edge of the guarantee band.
Wenn die Stütznocken im Abstand zu den Zungen angeordnet sind, wird die an sich gewünschte Flexibilität der Zungen beim erstmaligen Aufsetzen in keiner Weise beeinträchtigt. Die Zungen sind besonders vorteilhaft derart ausgebildet, dass sie in radialer Richtung gegen innen über die Stütznocken hinausragen. Auf diese Weise wird die Sperrfunktion der Zungen erhöht, da sich die Zungen im Extremfall um die Aussenkanten der Stütznocken legen und derart eine wesentliche Durchmesserreduktion herbeiführen.If the support cams are arranged at a distance from the tongues, the flexibility of the tongues which is desired per se is in no way impaired when it is first put on. The tongues are particularly advantageously designed such that they protrude inward in the radial direction beyond the support cams. In this way, the locking function of the tongues is increased, since in extreme cases the tongues wrap around the outer edges of the support cams and thus bring about a substantial reduction in diameter.
Wenn das Garantieband über Sollbruchstege mit der Kappe verbunden ist, werden die Zungen vorteilhaft zwischen den Sollbruchstegen angeordnet. Dadurch werden die Sollbruchstege beim erstmaligen Aufsetzen der Kappe kräftemässig nicht übermässig beansprucht, da sich das Garantieband radial besser ausdehnen kann. Anstelle von Sollbruchstegen könnte das Garantieband aber auch über einen dünnen Materialfilm mit dem unteren Rand der Kappe verbunden sein.If the guarantee band is connected to the cap via predetermined breaking bars, the tongues are advantageously arranged between the predetermined breaking bars. As a result, the predetermined breaking bars are not subjected to excessive force when the cap is put on for the first time, since the guarantee band can expand radially better. Instead of predetermined breaking bars, the guarantee band could also be connected to the lower edge of the cap via a thin material film.
Bei einer Schraubkappe, insbesondere für Mehrwegflaschen, wird vorteilhaft am Garantieband noch eine vertikale Sollbruchstelle angeordnet, so dass das Garantieband nach dem Abreissen nicht unter dem Wulst auf der Flaschenmündung bleibt. Der Abreissvorgang kann dabei besonders optimal gesteuert werden, wenn in Abschraubdrehrichtung eine Zunge näher an der vertikalen Sollbruchstelle angeordnet ist als in Aufschraubdrehrichtung.In the case of a screw cap, in particular for reusable bottles, a vertical predetermined breaking point is advantageously arranged on the guarantee band, so that the guarantee band does not remain under the bead on the bottle mouth after tearing off. The tear-off process can be controlled particularly optimally if a tongue is arranged closer to the vertical predetermined breaking point in the unscrewing direction than in the unscrewing direction.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachstehend genauer beschrieben. Es zeigen:
- Figur 1
- einen Querschnitt durch eine erfindungsgemässe Schraubkappe,
Figur 2- eine Ansicht von unten auf die Schraubkappe gemäss Figur 1,
Figur 3- das Garantieband in einer ersten Phase des Aufsetzvorgangs,
- Figur 4
- das Garantieband in einer zweiten Phase des Aufsetzvorgangs,
Figur 5- das Garantieband bei aufgesetzter Verschlusskappe, und
Figur 6- das Garantieband beim erstmaligen Entfernen der Verschlusskappe.
- Figure 1
- 3 shows a cross section through a screw cap according to the invention,
- Figure 2
- 2 shows a view from below of the screw cap according to FIG. 1,
- Figure 3
- the guarantee band in a first phase of the installation process,
- Figure 4
- the guarantee tape in a second phase of the installation process,
- Figure 5
- the guarantee tape when the cap is on, and
- Figure 6
- the guarantee tape when the cap is removed for the first time.
Wie in Figur 1 dargestellt, besteht eine Verschlusskappe 1 aus einem Kappenboden 11 und einer zylindrischen Kappenseitenwand 12, die mit einem Innengewinde 13 versehen ist. Am Kappenboden bzw. im Uebergangsbereich zwischen Kappenboden und Kappenseitenwand können verschiedene Mündungsdichtungen 14 angeordnet sein. Am unteren Rand der Verschlusskappe ist ein Garantieband 3 angeordnet, das über Sollbruchstege 9 mit der Kappe verbunden ist. Die Verschlusskappe muss nicht notwendigerweise eine Schraubkappe sein. Auch ein sogenannter Schnappverschluss liesse sich mit einem erfindungsgemässen Garantieband versehen.As shown in FIG. 1, a closure cap 1 consists of a cap base 11 and a cylindrical
Wie in Figur 1 dargestellt sind an der Innenwand 5 des Garantiebandes in bestimmten Abständen nach innen ragende Zungen 6 angeordnet. Die Zungen verjüngen sich im Querschnitt geringfügig gegen ihr äusseres Ende und sind etwas nach unten geneigt, wodurch das Entformen aus einem axial öffnenden Werkzeug erleichtert wird. Unter jeder Zunge 6 ist in einem bestimmten Abstand ein Stütznocken 7 angeordnet, der sich nach unten verjüngt. Jeder Stütznocken erstreckt sich etwa über die gesamte Länge einer Zunge, hat jedoch in der Draufsicht eine etwa halbmondförmige Konfiguration.As shown in FIG. 1,
Etwa auf der Ebene der Zungen 6 verläuft über den gesamten Umfang eine Rastkante 8, die als Durchmesserverjüngung der Innenwand 5 ausgebildet ist. Die Rastkante verbessert die Rückhaltewirkung der Zungen 6.At the level of the
Wie sich aus Figur 2 ergibt, müssen die Zungen nicht in regelmässigen Abständen über den Umfang verteilt sein. Insbesondere, wenn zusätzlich eine vertikale Sollbruchstelle 10 am Garantieband vorgesehen ist, kann es zweckmässig sein, die Zungen in unterschiedlichen Distanzen anzuordnen. So ist z.B. in Figur 2 eine Zunge 6a vorgesehen, welche in Abschraubrichtung A näher an der vertikalen Sollbruchstelle 10 liegt als die Zunge 6b in Aufschraubrichtung B. An der Zunge 6b ist ausserdem kein Stütznocken 7 vorgesehen, so dass sich diese Zunge mehr zurückbiegen kann als die übrigen Zungen. Die Zungen mit Stütznocken verteilen sich beim Ausführungsbeispiel gemäss Figur 2 etwa über einen Abschnitt von 180°, wobei die Zunge 6c etwa diametral gegenüber der vertikalen Sollbruchstelle 10 angeordnet ist. Um die Griffigkeit des Garantiebandes zu erhöhen, kann auf der Aussenseite eine axial verlaufende Randrierung 15 vorgesehen sein, wie sie in der Regel auch die Kappenseitenwand 12 aufweist.As can be seen from FIG. 2, the tongues do not have to be distributed over the circumference at regular intervals. In particular, if a vertical
Die Funktion der Zungen wird nachstehend anhand der Figuren 3 bis 6 näher erläutert. Figur 3 zeigt die Position einer Zunge 6 beim erstmaligen Aufschrauben der Verschlusskappe, wobei das Garantieband 3 in Pfeilrichtung C nach unten gegen den Wulst 4 an der Behältermündung 2 geschoben wird. Derartige Behältermündungen sind insbesondere bei Flaschen für Erfrischungsgetränke standardisiert, so dass immer die gleichen Masse und Toleranzen anzutreffen sind. Der Innendurchmesser des Garantiebandes und die Länge der Zungen werden derart dimensioniert, dass das Garantieband bei geringfügiger Dehnung im Umfang gerade noch ohne Zerstörung der Sollbruchstege 9 über den Wulst 4 geschoben werden kann.The function of the tongues is explained in more detail below with reference to FIGS. 3 to 6. FIG. 3 shows the position of a
Sobald die Zungen auf dem Wulst 4 auftreffen, werden sie nach oben zurückgebogen, wie dies in Figur 4 dargestellt ist. Da die Stütznocken 7 sich nach unten verjüngen und zudem etwa halbmondförmig ausgebildet sind, gleiten diese ebenfalls mühelos über den Wulst 4.As soon as the tongues hit the bead 4, they are bent back upwards, as shown in FIG. 4. Since the
Figur 6 zeigt die Stellung der Zungen, wenn in Pfeilrichtung D beim erstmaligen Entfernen der Verschlusskappe eine Kraftkomponente auf das Garantieband einwirkt. Die Zungen haben dabei die Tendenz, sich wiederum nach unten zurückzubiegen, werden dabei jedoch durch die Stütznocken 7 abgestützt. Ein Ueberwinden des Wulstes 4 wäre ersichtlicherweise nur durch übermässige Dehnung des Garantiebandes möglich, da die Zungen gegen unten blockiert sind. Beim Ansteigen der Zugkraft reissen jedoch die Sollbruchstege 9, wie dies in Figur 6 dargestellt ist. Das Garantieband ist vorzugsweise über einen einzelnen verstärkten Anwachssteg mit dem unteren Rand der Kappe verbunden, so dass es nach dem Reissen der vertikalen Sollbruchstelle ganz von der Behältermündung entfernt werden kann.FIG. 6 shows the position of the tongues when a force component acts on the guarantee band in the direction of arrow D when the closure cap is removed for the first time. The tongues have the tendency to bend back downward, but are supported by the
Claims (6)
- A closure cap (1) for closing the mouth (2) of a container, with a tear-off guarantee strip (3) which is arranged at the lower edge of the cap (1) and which is intended to engage under an annular bead (4) at the mouth (2) of the container when the cap (1) is fitted and which for that purpose has on the inside wall (5) a plurality of flexible tongues (6) which are directed towards the axial centre line, which tongues can be bent back when the cap (1) is first fitted on to the container and engage beneath the bead (4) in the end position of the cap (1), characterised in that at least in part individual support projections (7) are arranged beneath the tongues (6) on the side remote from the end portion (11) of the cap at a spacing relative to the tongues, wherein the tongues (6) can be supported on the support projections (7) when a force acts axially on the guarantee strip (3) in the direction of opening, each support projection extending approximately over the entire length of a tongue, tapering towards the lower edge of the guarantee strip (3) and being of an approximately half-moon configuration in the axial and radial plan view.
- A closure cap according to claim 1 characterised in that a retaining edge (8) is disposed on the inward side of the guarantee strip (3) approximately in the plane of the tongues (6).
- A closure cap according to claim 1 or claim 2 characterised in that the tongues (6) project radially inwardly beyond the support projections (7).
- A closure cap according to one of claims 1 to 3 characterised in that the tongues taper in cross-section towards their outer end.
- A closure cap according to one of claims 1 to 4 characterised in that the guarantee strip (3) is connected to the cap (1) by way of desired-fracture limb portions (9) and that the tongues (6) are disposed between the desired-fracture limb portions (9).
- A closure cap according to one of claims 1 to 5 characterised in that it is a screw cap and that the guarantee strip (3) is provided with a vertical desired-fracture location (10), wherein a tongue (6a) is arranged closer to the vertical desired-fracture location (10) in the unscrewing direction (A) than in the screwing-on direction (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88810061T ATE61987T1 (en) | 1987-02-26 | 1988-02-03 | CAP WITH GUARANTEE STRIP. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH737/87 | 1987-02-26 | ||
| CH737/87A CH671205A5 (en) | 1987-02-26 | 1987-02-26 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0281514A1 EP0281514A1 (en) | 1988-09-07 |
| EP0281514B1 EP0281514B1 (en) | 1991-03-27 |
| EP0281514B2 true EP0281514B2 (en) | 1994-01-05 |
Family
ID=4194035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88810061A Expired - Lifetime EP0281514B2 (en) | 1987-02-26 | 1988-02-03 | Closure cap with a warranty strap |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4784280A (en) |
| EP (1) | EP0281514B2 (en) |
| JP (1) | JPS63218051A (en) |
| AT (1) | ATE61987T1 (en) |
| AU (1) | AU598641B2 (en) |
| CA (1) | CA1294579C (en) |
| CH (1) | CH671205A5 (en) |
| DE (1) | DE3862128D1 (en) |
| ES (1) | ES2021877T5 (en) |
| GR (1) | GR3001673T3 (en) |
| ZA (1) | ZA881319B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2045988T3 (en) * | 1988-11-28 | 1994-01-16 | Crown Cork Ag | THREADED PLUG WITH GUARANTEE TAPE. |
| DK174625B1 (en) * | 1989-01-30 | 2003-07-28 | Alcoa Closure Systems Int Inc | Warranty closures made of plastic |
| US4938370B1 (en) * | 1989-04-26 | 2000-10-17 | Hc Ind | Tamper-indicating plastic closure |
| US5009323A (en) * | 1989-11-13 | 1991-04-23 | Sunbeam Plastics Corporation | Tamper indicating closure having a rotary seal |
| ES2044711T3 (en) * | 1990-04-04 | 1994-01-01 | Crown Cork Ag | SYNTHETIC MATERIAL CLOSING PLUG. |
| US5004112A (en) * | 1990-04-10 | 1991-04-02 | H-C Industries, Inc. | Tamper-indicating plastic closure |
| JPH0491848U (en) * | 1990-12-25 | 1992-08-11 | ||
| US5205426A (en) * | 1991-04-09 | 1993-04-27 | H-C Industries, Inc. | Tamper-indicating plastic closure |
| GB9205375D0 (en) * | 1992-03-12 | 1992-04-22 | Metal Closures Group Ltd | Container closures |
| US5251770A (en) * | 1992-05-06 | 1993-10-12 | Broadway Companies, Inc. | Container and pressure sealing closure combination |
| EG21314A (en) * | 1992-07-16 | 2000-10-31 | Driutt Rodney Malcolm | Tamper evident closure |
| US5242068A (en) * | 1992-08-07 | 1993-09-07 | H-C Industries, Inc. | Tamper-indicating plastic closure |
| US5320234A (en) * | 1992-10-07 | 1994-06-14 | H-C Industries, Inc. | Tamper-indicating plastic closure with pilfer band having staggered scores |
| US5356019A (en) * | 1992-10-14 | 1994-10-18 | Crown Cork & Seal Company, Inc. | Tamper indicating plastic closure |
| US5282540A (en) * | 1992-11-23 | 1994-02-01 | Creative Packaging Corp. | Tamper band with flexible engagement member |
| FR2712258B1 (en) * | 1993-11-12 | 1995-12-22 | Cebal | Tube having a plastic head comprising a tearable lid. |
| US5450973A (en) * | 1994-09-22 | 1995-09-19 | Eagle Engraving And Mold Corp. | Tamper-evident closure apparatus |
| US5501349A (en) * | 1994-10-27 | 1996-03-26 | H-C Industries, Inc. | Tamper-indicating plastic closure with selectively strengthened pilfer band |
| WO1997000209A1 (en) * | 1995-06-14 | 1997-01-03 | Bruno Zumbuhl | Threaded closure for pressurized containers |
| US5979682A (en) * | 1997-04-14 | 1999-11-09 | Zumbuhl; Bruno | Tab construction for closures having tamper evident rings |
| US20040069738A1 (en) * | 2002-08-07 | 2004-04-15 | Orth Kevin William | Reduced application energy closure |
| JP6418720B2 (en) * | 2012-12-21 | 2018-11-07 | 日本クロージャー株式会社 | Plastic container lid |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2499519A1 (en) * | 1981-02-11 | 1982-08-13 | Grussen Jean | SCREW CAPSULE WITH INVIOLABILITY RING |
| US4635808A (en) * | 1982-12-14 | 1987-01-13 | Maxcap, Inc. | Plastic cap |
| GR850153B (en) * | 1984-02-06 | 1985-03-29 | Obrist Ag Crown | |
| JPS62122956A (en) * | 1985-11-20 | 1987-06-04 | 昭和電工株式会社 | Vessel cover made of olefin group resin |
-
1987
- 1987-02-26 CH CH737/87A patent/CH671205A5/de not_active IP Right Cessation
-
1988
- 1988-02-03 ES ES88810061T patent/ES2021877T5/en not_active Expired - Lifetime
- 1988-02-03 EP EP88810061A patent/EP0281514B2/en not_active Expired - Lifetime
- 1988-02-03 AT AT88810061T patent/ATE61987T1/en active
- 1988-02-03 DE DE8888810061T patent/DE3862128D1/en not_active Expired - Lifetime
- 1988-02-05 US US07/152,766 patent/US4784280A/en not_active Expired - Lifetime
- 1988-02-11 CA CA000558740A patent/CA1294579C/en not_active Expired - Lifetime
- 1988-02-25 ZA ZA881319A patent/ZA881319B/en unknown
- 1988-02-25 AU AU12178/88A patent/AU598641B2/en not_active Ceased
- 1988-02-26 JP JP63044044A patent/JPS63218051A/en active Pending
-
1991
- 1991-03-28 GR GR90400771T patent/GR3001673T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GR3001673T3 (en) | 1992-11-23 |
| AU1217888A (en) | 1988-09-01 |
| DE3862128D1 (en) | 1991-05-02 |
| ES2021877T5 (en) | 1995-08-16 |
| ES2021877B3 (en) | 1991-11-16 |
| CH671205A5 (en) | 1989-08-15 |
| CA1294579C (en) | 1992-01-21 |
| US4784280A (en) | 1988-11-15 |
| EP0281514B1 (en) | 1991-03-27 |
| ZA881319B (en) | 1988-08-23 |
| ATE61987T1 (en) | 1991-04-15 |
| EP0281514A1 (en) | 1988-09-07 |
| JPS63218051A (en) | 1988-09-12 |
| AU598641B2 (en) | 1990-06-28 |
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