EP4001141B1 - Stopper for a container - Google Patents

Stopper for a container Download PDF

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Publication number
EP4001141B1
EP4001141B1 EP21201975.6A EP21201975A EP4001141B1 EP 4001141 B1 EP4001141 B1 EP 4001141B1 EP 21201975 A EP21201975 A EP 21201975A EP 4001141 B1 EP4001141 B1 EP 4001141B1
Authority
EP
European Patent Office
Prior art keywords
olive
stopper
wall
container
annular
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.)
Active
Application number
EP21201975.6A
Other languages
German (de)
French (fr)
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EP4001141A1 (en
Inventor
Roland Kneer
Stephan Kneer
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.)
Gaplast GmbH
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Gaplast GmbH
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Publication date
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Publication of EP4001141A1 publication Critical patent/EP4001141A1/en
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Publication of EP4001141B1 publication Critical patent/EP4001141B1/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
    • B65D41/58—Caps or cap-like covers combined with stoppers
    • 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
    • B65D41/46—Snap-on caps or cap-like covers
    • B65D41/48—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
    • B65D41/485—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics with integral internal sealing means
    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/0005—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in one piece
    • B65D39/0023—Plastic cap-shaped hollow plugs
    • 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
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/28—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with auxiliary containers for additional articles or materials
    • B65D51/30—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with auxiliary containers for additional articles or materials for desiccators
    • 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
    • B65D45/00—Clamping or other pressure-applying devices for securing or retaining closure members
    • 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
    • B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • 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
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/26—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes with means for keeping contents in position, e.g. resilient means
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure

Definitions

  • the invention relates to a stopper for a container, with a lid with a peripheral wall surrounding the neck of the container, on the lower edge of which a circumferential, tear-off locking ring is formed to ensure the originality of the container contents with inward-pointing blocking lugs, which in the fastening position of the stopper have an outward-pointing one Grip under the ring projection of the container, and with an olive provided with an external annular bead for clamping engagement in the container opening.
  • stoppers are known and have proven themselves many times to seal the contents of the container with the help of the olive, with the tamper-evident ring ensuring that the contents of the container cannot be manipulated without authorization.
  • a user wants to remove the stopper from the container for the first time, he first tears off the tamper-evident ring from the lower edge of the peripheral wall surrounding the container, whereupon he can lever the stopper off the container neck.
  • the EP 2 444 334 A1 discloses a plug with a recessed groove that has a metal cap which is firmly connected to the plastic body of the plug.
  • This metal cap is preferably made of steel and is firmly connected to the plastic body of the stopper by an adhesive, preferably by a hot-melt adhesive. Because of the metal cap, the depression channel cannot be compressed laterally to make it easier to pry the stopper off the neck of a container.
  • the EP 0 798 228 A1 discloses a plug with a recessed groove, in which the outer annular lid area according to Figure 3 of recesses distributed over the circumference, which are inserted during the production of the stopper by immersion cores the injection mold, with which the blocking lugs are formed on the locking ring.
  • the publication gives no indication of forming at least one upwardly projecting rib on the top of the annular lid area instead of the recesses in order to stiffen this lid area when the stopper is levered off from a container opening.
  • the stopper Since the stopper is a mass-produced item, its manufacturing costs should be as low as possible, with the amount of plastic material used being an important cost factor.
  • the present invention is based on the object of providing a stopper for a container which securely seals the contents of the container and can be removed more easily even if the olive is firmly clamped in the container than is the case with the previously usual stoppers.
  • the stopper should be able to be produced with less plastic material.
  • the invention provides that a circular, concentric recess groove is formed in the circular cover of the plug, which has a radially outer annular wall and a radially inner annular wall, which are connected to one another by a bottom wall.
  • the outer annular wall and the radial inner annular wall preferably run parallel to each other and at right angles to the central circular lid area and the outer annular lid area, on which they are formed.
  • the depression channel therefore preferably has a U-shape in cross section.
  • the invention further provides that the radially outer annular wall forms the olive, which has the circumferential annular bead on its outside, which causes the clamping engagement in the neck of the container.
  • the annular olive is connected at its lower end to the bottom wall of the recess groove, which supports the olive against the effects of lateral forces during clamping engagement in the container neck, the olive can be made shorter in comparison to conventional plugs, thereby reducing the amount of for plastic material used in the plugs can be reduced. In addition, the wall thickness of the olive supported in this way can also be reduced.
  • the depression groove also makes it easier to pry the stopper off the container neck in that the depression groove can be compressed slightly when the stopper is pushed back from the container neck, which makes it easier to remove the stopper from the container neck.
  • the invention also provides that recesses which pass through the locking ring are formed directly above the blocking lugs and extend beyond the blocking lugs on both sides. These recesses are created by lateral slides of the injection molding tool, which together with an inner contour sleeve form the blocking lugs, as is the case with a conventional plug with a closed lid DE 42 36 741 C1 is described. These lateral recesses ensure that no foreign substances from outside can get close to the container opening, as would be the case if the blocking lugs were formed by plunger cores that would be guided through recesses in the lid part. Through this Recesses in the outer annular lid area would otherwise make it more difficult to pry off the plug, since the outer annular lid area would not have the required rigidity.
  • the invention also provides that the radially inner annular wall is extended beyond the bottom wall and forms the peripheral wall of a desiccant chamber.
  • the plug expediently contains a spiral hold-down device, the elastic spiral webs of which, which end in a closing ring, can be formed on the recess channel.
  • the recess groove is formed on the central circular lid area and the outer annular lid area, whereby the lower end area of the radially outer annular wall forming the olive can be bevelled in a straight line in order to facilitate its removal from the mold when producing the stopper.
  • this slope also serves as a slip-on aid when automatically plugging the cap on the tube. This also makes it easier to pry off the plug.
  • the invention provides that the top of the annular cover area is provided with at least one circumferential ribs projecting upwards.
  • the olive ring has a corrugated wall surface on its inside, which is formed by a plurality of grooves in the wall of the olive that run in the axial direction of the plug.
  • the grooves can have a constant depth of about 10% to about 50% of the minimum wall thickness of the olive ring, with the suitable value depending on the plastic material used and the geometry of the corrugation.
  • the webs of the corrugation preferably have a curved cross-sectional shape.
  • peripheral wall of the plug and the locking ring are connected to each other at points between the blocking lugs with short webs that can be easily torn off.
  • Figure 1 shows an embodiment of the plug according to the invention, in the circular cover of which a concentric depression channel 1 is formed, which contains a radially outer annular wall 2, a bottom wall 3 and an inner annular wall 4.
  • the depression channel 1 has a U-shape in cross section and is formed on a central circular lid area 5 and an outer annular lid area 6.
  • the radially inner annular wall 4 is extended beyond the bottom wall 3 and, together with the annular wall 4, forms the peripheral wall 7 of a desiccant chamber.
  • a rectangularly angled peripheral wall 8 is connected to the annular lid area 6, on the lower edge of which a tear-off locking ring 9 is formed to ensure the originality of the container contents, which is connected to inward-pointing blocking lugs 10. Above the blocking lugs 10 there are recesses 11 which pass through the locking ring 9.
  • the radially outer annular wall 2 of the depression channel 1 is designed as an olive in that it is provided with an externally circumferential annular bead 12 for clamping engagement in the opening of a container, not shown.
  • the lower end region 13 of the olive runs in a straight line and diagonally inwards.
  • a spiral hold-down device 14 is formed with its elastic spiral-shaped webs 15 on the bottom wall 3 of the depression channel 1.
  • Figure 2 shows an identical plug with the exception that webs 7 ', 8' running in the radial direction are formed on the top of the central lid area 5 and on the top of the annular lid area 6, which increase the rigidity of the two lid areas.
  • the protruding webs 7 'and 8' are each designed to be evenly spaced from one another and distributed over the entire circumference of the cover areas 5, 6.
  • Figure 3 shows a compilation of a conventional stopper 16 in the left half of the figure and the stopper 17 according to the invention in the right half of the figure. From this comparison it can be seen that in the plug 17 according to the invention, the olive 2 is significantly shorter than the olive 18 of the conventional plug 16, which is possible because the olive 2 is held and supported by the bottom wall 3. Thanks to this support, the olive 2 develops the same contact force as the longer olive 18, which also makes prying it off a container much easier due to the shorter dimensions. The sloping surface 13 at the lower end of the olive 2 also contributes to this. On the top of the annular cover area 6, an annular circumferential rib 19 is formed.
  • a corrugation can be formed on the radially inner surface of the olive 2.
  • This corrugation which consists of closely spaced grooves and cross-sectionally rounded projections between them, makes it easier to lever off the stopper according to the invention, while at the same time maintaining the contact pressure of the olive required to seal the container contents.

Description

Die Erfindung betrifft einen Stopfen für einen Behälter, mit einem Deckel mit einer den Hals des Behälters umgreifenden Umfangswand, an deren Unterkante ein umlaufender abreißbarer Sicherungsring zur Originalitätssicherung des Behälterinhalts mit nach innen weisenden Blockieransätzen angeformt ist, die in der Befestigungslage des Stopfens einen nach außen weisenden Ringvorsprung des Behälters untergreifen, und mit einer mit einer außen umlaufenden Ringwulst versehenen Olive zum klemmenden Eingriff in die Behälteröffnung.The invention relates to a stopper for a container, with a lid with a peripheral wall surrounding the neck of the container, on the lower edge of which a circumferential, tear-off locking ring is formed to ensure the originality of the container contents with inward-pointing blocking lugs, which in the fastening position of the stopper have an outward-pointing one Grip under the ring projection of the container, and with an olive provided with an external annular bead for clamping engagement in the container opening.

Derartige Stopfen sind bekannt und haben sich vielfach bewährt, um mit Hilfe der Olive den Behälterinhalt dicht zu verschließen, wobei der Originalitätssicherungsring gewährleistet, dass der Behälterinhalt nicht unbefugt manipuliert werden kann. Wenn ein Benutzer erstmalig den Stopfen von dem Behälter abnehmen will, reißt er zuvor den Originalitätssicherungsring von der Unterkante der dem Behälter umgreifenden Umfangswand ab, woraufhin er den Stopfen von dem Behälterhals abhebeln kann.Such stoppers are known and have proven themselves many times to seal the contents of the container with the help of the olive, with the tamper-evident ring ensuring that the contents of the container cannot be manipulated without authorization. When a user wants to remove the stopper from the container for the first time, he first tears off the tamper-evident ring from the lower edge of the peripheral wall surrounding the container, whereupon he can lever the stopper off the container neck.

Die EP 2 444 334 A1 offenbart einen Stopfen mit einer Vertiefungsrinne, der eine Metallkappe hat, die mit dem Kunststoffkörper des Stopfens fest verbunden ist. Diese Metallkappe besteht vorzugsweise aus Stahl und ist mit dem Kunststoffkörper des Stopfens durch ein Klebemittel, vorzugsweise durch ein heißschmelzendes Klebemittel fest verbunden. Wegen der Metallkappe kann die Vertiefungsrinne nicht seitlich zusammen gedrückt werden, um ein Abhebeln des Stopfens von einem Behälterhals zu erleichtern.The EP 2 444 334 A1 discloses a plug with a recessed groove that has a metal cap which is firmly connected to the plastic body of the plug. This metal cap is preferably made of steel and is firmly connected to the plastic body of the stopper by an adhesive, preferably by a hot-melt adhesive. Because of the metal cap, the depression channel cannot be compressed laterally to make it easier to pry the stopper off the neck of a container.

Die EP 0 798 228 A1 offenbart einen Stopfen mit einer Vertiefungsrinne, bei dem der äußere ringförmige Deckelbereich gemäß Figur 3 von über den Umfang verteilten Aussparungen durchbrochen, die bei der Herstellung des Stopfens durch Tauchkerne in der Spritzgussform entstehen, mit denen die Blockieransätze an dem Sicherungsring ausgebildet werden. Die Druckschrift gibt keinen Hinweis darauf, anstelle der Aussparungen wenigstens eine nach oben abstehende Rippe an der Oberseite des ringförmigen Deckelbereichs auszubilden, um diesen Deckelbereich beim Abhebeln des Stopfens von einer Behälteröffnung zu versteifen.The EP 0 798 228 A1 discloses a plug with a recessed groove, in which the outer annular lid area according to Figure 3 of recesses distributed over the circumference, which are inserted during the production of the stopper by immersion cores the injection mold, with which the blocking lugs are formed on the locking ring. The publication gives no indication of forming at least one upwardly projecting rib on the top of the annular lid area instead of the recesses in order to stiffen this lid area when the stopper is levered off from a container opening.

Bei den unvermeidlichen Herstellungstoleranzen kann es passieren, dass die ringförmige Olive in einem so festen Klemmsitz in dem Behälterhals steckt, dass eine beträchtliche Kraft erforderlich ist, um die an dem Deckel angeformte Umfangswand und die Olive von dem Behälterhals zu trennen, was z.B. für betagte Benutzer problematisch sein kann. Dabei ist das schräge "Abhebeln" des Stopfens auch durch den unnachgiebigen Deckel des Stopfens erschwert.Given the inevitable manufacturing tolerances, it can happen that the annular olive is in such a tight clamp fit in the container neck that considerable force is required to separate the peripheral wall formed on the lid and the olive from the container neck, which is, for example, for elderly users can be problematic. “Prying off” the plug at an angle is also made more difficult by the unyielding cover of the plug.

Da es sich bei dem Stopfen um einen Massenartikel handelt, sollen dessen Herstellungskosten möglichst niedrig sein, wobei die Menge des eingesetzten Kunststoffmaterials ein wichtiger Kostenfaktor ist.Since the stopper is a mass-produced item, its manufacturing costs should be as low as possible, with the amount of plastic material used being an important cost factor.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Stopfen für einen Behälter anzugeben, der den Behälterinhalt sicher abdichtet und auch bei einem festen Klemmsitz der Olive in dem Behälter leichter abgenommen werden kann, als dies bei den bisher üblichen Stopfen der Fall ist. Außerdem soll der Stopfen mit weniger Kunststoffmaterial herstellbar sein.The present invention is based on the object of providing a stopper for a container which securely seals the contents of the container and can be removed more easily even if the olive is firmly clamped in the container than is the case with the previously usual stoppers. In addition, the stopper should be able to be produced with less plastic material.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved according to the invention by the features of patent claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.

Die Erfindung sieht vor, dass in dem kreisrunden Deckel des Stopfens eine kreisförmige, konzentrische Vertiefungsrinne ausgebildet ist, die eine radial äußere Ringwand und eine radial innere Ringwand hat, die durch eine Bodenwand miteinander verbunden sind. Die äußere Ringwand und die radial innere Ringwand verlaufen bevorzugt parallel zueinander und im rechten Winkel zu dem mittigen kreisförmigen Deckelbereich und dem äußeren ringförmigen Deckelbereich, an denen sie angeformt sind. Die Vertiefungsrinne hat damit bevorzugt querschnittlich eine U-Form.The invention provides that a circular, concentric recess groove is formed in the circular cover of the plug, which has a radially outer annular wall and a radially inner annular wall, which are connected to one another by a bottom wall. The outer annular wall and the radial inner annular wall preferably run parallel to each other and at right angles to the central circular lid area and the outer annular lid area, on which they are formed. The depression channel therefore preferably has a U-shape in cross section.

Weiter sieht die Erfindung vor, dass die radial äußere Ringwand die Olive bildet, die an ihrer Außenseite die umlaufende Ringwulst hat, die den klemmenden Eingriff in den Hals des Behälters hervorruft.The invention further provides that the radially outer annular wall forms the olive, which has the circumferential annular bead on its outside, which causes the clamping engagement in the neck of the container.

Da die ringförmige Olive an ihrem unteren Ende mit der Bodenwand der Vertiefungsrinne verbunden ist, die die Olive gegen die Einwirkung der seitlichen Kräfte beim klemmenden Eingriff in den Behälterhals abstützt, kann die Olive im Vergleich zu herkömmlichen Stopfen kürzer ausgeführt werden, wodurch die Menge des für den Stopfen verwendeten Kunststoffmaterials verringert werden kann. Außerdem kann auch die Wandstärke der so abgestützten Olive verringert werden.Since the annular olive is connected at its lower end to the bottom wall of the recess groove, which supports the olive against the effects of lateral forces during clamping engagement in the container neck, the olive can be made shorter in comparison to conventional plugs, thereby reducing the amount of for plastic material used in the plugs can be reduced. In addition, the wall thickness of the olive supported in this way can also be reduced.

Die Vertiefungsrinne erleichtert zudem das Abhebeln des Stopfens von dem Behälterhals, indem die Vertiefungsrinne beim Zurückschieben des Stopfens vom Behälterhals ein wenig zusammengedrückt werden kann, wodurch das Abnehmen des Stopfens vom Behälterhals erleichtert ist.The depression groove also makes it easier to pry the stopper off the container neck in that the depression groove can be compressed slightly when the stopper is pushed back from the container neck, which makes it easier to remove the stopper from the container neck.

Die Erfindung sieht zudem vor, dass direkt über den Blockieransätzen den Sicherungsring durchgreifende Aussparungen ausgebildet sind, die sich beidseitig über die Blockieransätze hinaus erstrecken. Diese Aussparungen entstehen durch seitliche Schieber des Spritzgussformwerkzeugs, die zusammen mit einer inneren Konturhülse die Blockieransätze ausbilden, wie dies bei einem herkömmlichen Stopfen mit geschlossenem Deckel in der DE 42 36 741 C1 beschrieben ist. Durch diese seitlichen Aussparungen ist sichergestellt, dass keine Fremdstoffe von außen in die Nähe der Behälteröffnung gelangen können, wie dies bei der Ausbildung der Blockieransätze durch Tauchkerne der Fall wäre, die durch Aussparungen des Deckelteils geführt würden. Durch diese Aussparungen in dem äußeren ringförmigen Deckelbereich würde anderenfalls das Abhebeln des Stopfens erschwert, da der äußere ringförmige Deckelbereich nicht die erforderliche Steifigkeit besitzen würde.The invention also provides that recesses which pass through the locking ring are formed directly above the blocking lugs and extend beyond the blocking lugs on both sides. These recesses are created by lateral slides of the injection molding tool, which together with an inner contour sleeve form the blocking lugs, as is the case with a conventional plug with a closed lid DE 42 36 741 C1 is described. These lateral recesses ensure that no foreign substances from outside can get close to the container opening, as would be the case if the blocking lugs were formed by plunger cores that would be guided through recesses in the lid part. Through this Recesses in the outer annular lid area would otherwise make it more difficult to pry off the plug, since the outer annular lid area would not have the required rigidity.

Außerdem sieht die Erfindung vor, dass die radial innere Ringwand über die Bodenwand hinaus verlängert ist und die Umfangswand einer Trockenmittelkammer bildet. Außerdem enthält der Stopfen zweckmäßigerweise einen Spiralniederhalter, dessen elastische Spiralstege, die in einem Abschlussring enden, an der Vertiefungsrinne angeformt sein können.The invention also provides that the radially inner annular wall is extended beyond the bottom wall and forms the peripheral wall of a desiccant chamber. In addition, the plug expediently contains a spiral hold-down device, the elastic spiral webs of which, which end in a closing ring, can be formed on the recess channel.

Die Vertiefungsrinne ist an dem mittigen kreisförmigen Deckelbereich und dem äußeren ringförmigen Deckelbereich angeformt, wobei der untere Endbereich der die Olive bildenden radial äußeren Ringwand geradlinig abgeschrägt sein kann, um bei der Herstellung des Stopfens dessen Entformung zu erleichtern. Gleichzeitig dient diese Schräge auch als Anschlupfhilfe beim automatischen Verstopfen des Verschlusses auf der Röhre. Außerdem wird hierdurch das Abhebeln des Stopfens erleichtert.The recess groove is formed on the central circular lid area and the outer annular lid area, whereby the lower end area of the radially outer annular wall forming the olive can be bevelled in a straight line in order to facilitate its removal from the mold when producing the stopper. At the same time, this slope also serves as a slip-on aid when automatically plugging the cap on the tube. This also makes it easier to pry off the plug.

Um die Steifigkeit des Stopfens zu erhöhen, sieht die Erfindung vor, dass die Oberseite des ringförmigen Deckelbereichs mit wenigstens einer nach oben abstehenden umlaufenden Rippen versehen ist.In order to increase the rigidity of the stopper, the invention provides that the top of the annular cover area is provided with at least one circumferential ribs projecting upwards.

Mit großem Vorteil wird außerdem vorgeschlagen, dass der Olivring an seiner Innenseite eine geriffelte Wandfläche hat, die durch eine Vielzahl von in axialer Richtung des Stopfens verlaufenden Nuten in der Wand der Olive gebildet ist. Die Nuten können dabei eine gleichbleibende Tiefe von etwa 10% bis etwa 50% der minimalen Wandstärke des Olivrings haben, wobei der geeignete Wert von dem verwendeten Kunststoffmaterial und der Geometrie der Riffelung abhängt. Die Stege der Riffelung haben vorzugsweise eine gewölbte Querschnittsform.It is also proposed with great advantage that the olive ring has a corrugated wall surface on its inside, which is formed by a plurality of grooves in the wall of the olive that run in the axial direction of the plug. The grooves can have a constant depth of about 10% to about 50% of the minimum wall thickness of the olive ring, with the suitable value depending on the plastic material used and the geometry of the corrugation. The webs of the corrugation preferably have a curved cross-sectional shape.

Versuche mit einer derart geriffelten Olive haben gezeigt, dass der von der Olive erzeugte Anpressdruck und damit die erreichte Dichtigkeit des Behälterinhalts nur unwesentlich verringert ist, während die Riffelung das Abhebeln des Stopfens vom Behälterhals signifikant erleichtert. Hierdurch können auch Benutzer mit geringer Kraft in den Händen den Stopfen besser handhaben.Tests with an olive ribbed in this way have shown that the contact pressure generated by the olive and thus the tightness of the container contents is only slightly reduced, while the ribbing prevents the olive from being levered off Stopping the container neck is made significantly easier. This means that even users with little strength in their hands can handle the stopper better.

Die Umfangswand des Stopfens und der Sicherungsring sind an zwischen den Blockieransätzen liegenden Stellen mit kurzen Stegen miteinander verbunden, die leicht abgerissen werden können.The peripheral wall of the plug and the locking ring are connected to each other at points between the blocking lugs with short webs that can be easily torn off.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung sowie anhand der Zeichnungen. Dabei zeigen:

Figur 1
eine perspektivische Darstellung einer teilweise geschnittenen Ausführungsform der Erfindung;
Figur 2
eine durch Stege verstärkte Ausführungsform;
Figur 3
eine Gegenüberstellung eines herkömmlichen und eines erfindungsgemäßen Stopfens;
Figur 4
dieselbe Gegenüberstellung ohne Maße;
Figur 5
eine perspektivische Darstellung des erfindungsgemäßen Stopfens der Figuren 3 und 4.
Further details of the invention emerge from the following description and the drawings. Show:
Figure 1
a perspective view of a partially sectioned embodiment of the invention;
Figure 2
an embodiment reinforced by webs;
Figure 3
a comparison of a conventional plug and a plug according to the invention;
Figure 4
the same comparison without measurements;
Figure 5
a perspective view of the plug according to the invention Figures 3 and 4 .

Figur 1 zeigt eine Ausführungsform des erfindungsgemäßen Stopfens, in dessen kreisförmigem Deckel eine konzentrische Vertiefungsrinne 1 ausgebildet ist, die eine radial äußere Ringwand 2, eine Bodenwand 3 und eine innere Ringwand 4 enthält. Die Vertiefungsrinne 1 hat querschnittlich eine U-Form und ist an einem mittigen kreisförmigen Deckelbereich 5 und einem äußeren ringförmigen Deckelbereich 6 angeformt. Die radial innere Ringwand 4 ist über die Bodenwand 3 hinaus verlängert und bildet zusammenmit der Ringwand 4 die Umfangswand 7 einer Trockenmittelkammer. Figure 1 shows an embodiment of the plug according to the invention, in the circular cover of which a concentric depression channel 1 is formed, which contains a radially outer annular wall 2, a bottom wall 3 and an inner annular wall 4. The depression channel 1 has a U-shape in cross section and is formed on a central circular lid area 5 and an outer annular lid area 6. The radially inner annular wall 4 is extended beyond the bottom wall 3 and, together with the annular wall 4, forms the peripheral wall 7 of a desiccant chamber.

Mit dem ringförmigen Deckelbereich 6 ist eine rechtwinklig abgewinkelte Umfangswand 8 verbunden, an deren Unterkante ein abreißbarer Sicherungsring 9 zur Originalitätssicherung des Behälterinhalts angeformt ist, der mit nach innen weisenden Blockieransätzen 10 verbunden ist. Über den Blockieransätzen 10 befinden sich den Sicherungsring 9 durchgreifende Aussparungen 11.A rectangularly angled peripheral wall 8 is connected to the annular lid area 6, on the lower edge of which a tear-off locking ring 9 is formed to ensure the originality of the container contents, which is connected to inward-pointing blocking lugs 10. Above the blocking lugs 10 there are recesses 11 which pass through the locking ring 9.

Die radial äußere Ringwand 2 der Vertiefungsrinne 1 ist als Olive ausgebildet, indem sie mit einer außen umlaufenden Ringwulst 12 zum klemmenden Eingriff in die Öffnung eines nicht dargestellten Behälters versehen ist. Der untere Endbereich 13 der Olive verläuft geradlinig schräg nach innen.The radially outer annular wall 2 of the depression channel 1 is designed as an olive in that it is provided with an externally circumferential annular bead 12 for clamping engagement in the opening of a container, not shown. The lower end region 13 of the olive runs in a straight line and diagonally inwards.

Ein Spiralniederhalter 14 ist mit seinen elastischen spiralförmigen Stegen 15 an der Bodenwand 3 der Vertiefungsrinne 1 angeformt.A spiral hold-down device 14 is formed with its elastic spiral-shaped webs 15 on the bottom wall 3 of the depression channel 1.

Figur 2 zeigt einen identischen Stopfen mit der Ausnahme, dass auf der Oberseite des mittigen Deckelbereichs 5 und auf der Oberseite des ringförmigen Deckelbereichs 6 in radialer Richtung verlaufende Stege 7', 8' ausgebildet sind, die die Steifigkeit der beiden Deckelbereich erhöhen. Die vorstehenden Stege 7' und 8' sind jeweils gleichmäßig voneinander beabstandet über den gesamten Umfang der Deckelbereich 5, 6 verteilt ausgebildet. Figure 2 shows an identical plug with the exception that webs 7 ', 8' running in the radial direction are formed on the top of the central lid area 5 and on the top of the annular lid area 6, which increase the rigidity of the two lid areas. The protruding webs 7 'and 8' are each designed to be evenly spaced from one another and distributed over the entire circumference of the cover areas 5, 6.

Figur 3 zeigt eine Zusammenstellung eines herkömmlichen Stopfens 16 in der linken Hälfte der Figur und des erfindungsgemäßen Stopfens 17 in der rechten Figurenhälfte. Aus dieser Gegenüberstellung ist zu sehen, dass bei dem erfindungsgemäßen Stopfen 17 die Olive 2 erheblich kürzer ist als die Olive 18 des herkömmlichen Stopfens 16, was dadurch möglich ist, dass die Olive 2 durch die Bodenwand 3 gehalten und abgestützt ist. Durch diese Abstützung entwickelt die Olive 2 dieselbe Anpresskraft wie die längere Olive 18, wodurch zudem das Abhebeln von einem Behälter wegen der kürzeren Abmessung erheblich erleichtert ist. Hierzu trägt auch die schräge Fläche 13 am unteren Ende der Olive 2 bei. Auf der Oberseite des ringförmigen Deckelbereichs 6 ist eine ringförmig umlaufende Rippe 19 ausgebildet. Figure 3 shows a compilation of a conventional stopper 16 in the left half of the figure and the stopper 17 according to the invention in the right half of the figure. From this comparison it can be seen that in the plug 17 according to the invention, the olive 2 is significantly shorter than the olive 18 of the conventional plug 16, which is possible because the olive 2 is held and supported by the bottom wall 3. Thanks to this support, the olive 2 develops the same contact force as the longer olive 18, which also makes prying it off a container much easier due to the shorter dimensions. The sloping surface 13 at the lower end of the olive 2 also contributes to this. On the top of the annular cover area 6, an annular circumferential rib 19 is formed.

Eine Riffelung kann an der radial inneren Fläche der Olive 2 ausgebildet sein. Diese Riffelung, die aus dicht beieinander liegenden Nuten und dazwischen querschnittlich gerundeten Vorsprüngen besteht, erleichtert das Abhebeln des erfindungsgemäßen Stopfens, wobei gleichzeitig der zur Dichtigkeit des Behälterinhalts erforderliche Anpressdruck der Olive erhalten bleibt.A corrugation can be formed on the radially inner surface of the olive 2. This corrugation, which consists of closely spaced grooves and cross-sectionally rounded projections between them, makes it easier to lever off the stopper according to the invention, while at the same time maintaining the contact pressure of the olive required to seal the container contents.

Claims (6)

  1. A stopper for a container including a lid with a peripheral wall (8) engaging around the neck of the container, integrally moulded on whose lower edge there is a peripheral tear-off security ring (9) for tamper evidence of the container contents with inwardly directed locking projections (10), which, in the fastened position of the stopper, engage beneath an outwardly directed annular projection on the container, and including an olive (2) provided with an outer peripheral annular bead (12) for clamping engagement in the container opening, wherein formed in the lid there is a circular, concentric recessed channel (1), which has a radially outer annular wall (2) and a radially inner annular wall (4), which are connected together by a base wall (3), and wherein the recessed channel (1) is integrally moulded on the central circular lid region (5) and the outer annular lid region (6), wherein the radially outer annular wall constitutes the olive (2) and the radially inner annular wall (4) is extended beyond the base wall (3) and constitutes the peripheral wall of a desiccant chamber (7), characterised in that the upper side of the annular lid region (6) is provided with at least one upwardly projecting rib (19).
  2. A stopper as claimed in Claim 1, characterised in that the lower end region (13) of the olive (2) is chamfered in a straight line.
  3. A stopper as claimed in one of Claims 1 or 2, characterised in that the olive has a ribbed wall surface on its inner side, which is constituted by a plurality of grooves in the wall of the olive extending in the longitudinal direction of the olive.
  4. A stopper as claimed in Claim 3, characterised in that the grooves have a preferably constant depth of 10% to 50% of the minimum wall thickness of the olive.
  5. A stopper as claimed in one of Claims 3 or 4, characterised in that the webs between the grooves have a domed cross-sectional shape.
  6. A stopper as claimed in one of Claims 1 to 5, characterised in that a spiral retainer (14) is integrally moulded on the base wall (3) of the recessed channel (1).
EP21201975.6A 2020-11-13 2021-10-11 Stopper for a container Active EP4001141B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020129998.2A DE102020129998B3 (en) 2020-11-13 2020-11-13 Stopper for a container

Publications (2)

Publication Number Publication Date
EP4001141A1 EP4001141A1 (en) 2022-05-25
EP4001141B1 true EP4001141B1 (en) 2024-02-07

Family

ID=78087203

Family Applications (1)

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EP21201975.6A Active EP4001141B1 (en) 2020-11-13 2021-10-11 Stopper for a container

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Country Link
US (1) US20220153484A1 (en)
EP (1) EP4001141B1 (en)
CN (1) CN114476354A (en)
BR (1) BR102021022630A2 (en)
CA (1) CA3138279A1 (en)
DE (1) DE102020129998B3 (en)
MX (1) MX2021013952A (en)

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Also Published As

Publication number Publication date
CA3138279A1 (en) 2022-05-13
EP4001141A1 (en) 2022-05-25
US20220153484A1 (en) 2022-05-19
MX2021013952A (en) 2022-05-16
BR102021022630A2 (en) 2022-05-24
DE102020129998B3 (en) 2021-10-28
CN114476354A (en) 2022-05-13

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