EP2256056B1 - Tamper-evident bung seal for bung container - Google Patents

Tamper-evident bung seal for bung container Download PDF

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Publication number
EP2256056B1
EP2256056B1 EP10162832A EP10162832A EP2256056B1 EP 2256056 B1 EP2256056 B1 EP 2256056B1 EP 10162832 A EP10162832 A EP 10162832A EP 10162832 A EP10162832 A EP 10162832A EP 2256056 B1 EP2256056 B1 EP 2256056B1
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EP
European Patent Office
Prior art keywords
plug
bunghole
sealing cap
bung
clamping sleeve
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EP10162832A
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German (de)
French (fr)
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EP2256056A1 (en
EP2256056B2 (en
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Schuetz GmbH and Co KGaA
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Schuetz GmbH and Co KGaA
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Application filed by Schuetz GmbH and Co KGaA filed Critical Schuetz GmbH and Co KGaA
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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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • B65D39/088—Bungs with special means facilitating handling thereof
    • 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
    • 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
    • B65D55/024—Closures in which a part has to be ruptured to gain access to the contents
    • 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
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0863—Plastic snap-on cap-like collars having frangible parts

Definitions

  • the invention relates to a bung stopper for bung container, in particular for bung barrels made of plastic for liquids, with a screwed into a formed as a threaded spigot of the container bung plug made of plastic or metal and a latchable on the bung plug plastic sealing cap for detecting tampering according to the preamble of Ansprüchs 1, as out WO 2008/139196 A known.
  • the sealing cap of a similar in the EP 1 697 224 B1 described bung plug closure for bung container has elastic legs which extend axially into the plug well and have a radially projecting foot.
  • the elastic legs of the sealing cap dip into the plug well and the leg feet engage with radial undercuts formed at the base of the key engagement eyelets.
  • the outer diameter of the circularly arranged leg feet of the sealing cap is greater than the inner diameter of the circularly arranged, outwardly curved inner walls of the key gripping lugs of the bung plug with the undercuts for engaging the leg feet of the sealing cap.
  • a tamper-evident closure for a spout of a container in which a detent cover with an apron and from this radially outwardly projecting annular bead is inserted into a container opening with a cylindrical inner wall.
  • the inner wall is in turn provided with a ring-shaped radially inwardly projecting counter-latching element, such that after insertion of the skirt of the latching lid into the container opening, a position of the latching lid locking locking the annular bead takes place with the counter-latching element.
  • the invention has for its object to develop a suitable for automatic filling systems for bung, in particular bung barrels, bung closure.
  • the bung stopper 1 after the FIGS. 1 to 3 for bung 2 made of plastic such as bung casks for liquids is formed by a trained as a threaded spigot 3 of the container 2, a screwed into the bung 3 bung stopper 4 made of plastic or metal and a latchable on the bung 4 sealing cap 5 made of plastic for the detection of tampering.
  • the bung stopper 4 is sealed by means of a sealing ring 6 in the bung 3.
  • the cup-shaped bung stopper 4 has a cylindrical outer wall 7 with an external thread 8, on the inner circumference 9 key gripping lugs 10 are arranged for a socket wrench concentric with the plug central axis 11-11 extending radially and axially into the plug recess 12 of the bung stopper 4.
  • a concentric, limited elastic clamping sleeve 16 is connected by Abr predominantlystegen 15, which extends axially into the plug recess 12 and at its inner end 17 has a radially projecting into the plug recess 12, annular locking element 18 for locking with ring segment-shaped in the plug recess 12 radially projecting counter-latching elements 19 at the lower portion 20 of the outwardly curved, cylinder-segment-shaped inner walls 21 of the key locking eyelets 10th
  • the annular detent element 18 of the clamping sleeve 16 of the sealing cap 5 and the ring-segment-shaped counter-locking elements 19 on the key-locking eyelets 10 of the bung stopper 4 have hook-shaped cross-sectional profiles 22, 23.
  • the outer diameter D 1 of the annular locking element 18 on the clamping sleeve 16 of the sealing cap 5 is approximately equal to the diameter D 2 of the inner walls 21 of the key locking eyes 10 of the bung stopper 4, such that when snapping the sealing cap 5 on the screwed into the bung 3 bung stopper 4 the annular detent element 18 is guided at the inner end 17 of the clamping sleeve 16 of the sealing cap 4 before locking with the counter-locking elements 19 on the inner walls 21 of the key locking eyelets 10 of the bung stopper 4 through the inner walls 21 of the key locking eyelets 10.
  • sealing cap 5 and bung stopper 4 when the sealing cap is snapped onto the bung stopper makes it possible to mechanically close the bung nipples 3 of bunghouses 2 in automatic filling plants, in particular for bung drums.
  • the annular detent element 18 at the inner end 17 of the clamping sleeve 16 of the sealing cap 5 and the ring segment-shaped counter-locking elements 19 have a tongue-shaped cross-sectional profile at the key locking eyelets 10 of the bung stopper 4.
  • the annular locking element 18 at the inner end 17 of the clamping sleeve 16 of the sealing cap 5 with preferably three toothed rings 24 for locking with three corresponding toothed ring segments 25 of the counter-locking elements 19 are provided on the key locking eyelets 10 of the bung stopper 4.
  • the clamping sleeve 16 of the sealing cap 5 is connected except by the tear-off webs 15 by a pull-tab 26 with the sealing cap 14, wherein the pull-tab 26 is integrated into the sealing cap 14.
  • the sealing cap 5 is provided with an outer tear-off tab 27, which is integrally formed on a tear-off ring 28 which is connected by tear-off webs 29 and a holding web 30 to the downwardly directed outer edge 31 of the sealing cap 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)

Abstract

The closure plug (1) has an elastic clamping sleeve (16) fastened to an inner side (13) of a sealing cap disk (14). The sleeve has an annular locking element (18) radially protruded into the cavity to lock the sleeve with a ring segment-like counter-locking element (19). Outer diameter (D1) of the locking element is approximately equal to diameter (D2) of a cylinder segment-like inner wall (21) such that the locking element at an inner end (17) of the sleeve is guided before locking with the counter-locking element by the inner wall during fixing a sealing cap (5) on a bung-hole plug (4).

Description

Die Erfindung betrifft einen Spundstopfenverschluss für Spundbehälter, insbesondere für Spundfässer aus Kunststoff für Flüssigkeiten, mit einem in einen als Gewindestutzen ausgebildeten Spundstutzen des Behälters einschraubbaren Spundstopfen aus Kunststoff oder Metall sowie einer auf den Spundstopfen aufrastbaren Siegelkappe aus Kunststoff zum Nachweis von Manipulationen nach dem Oberbegriff des Ansprüchs 1, wie aus WO 2008/139196 A bekannt.The invention relates to a bung stopper for bung container, in particular for bung barrels made of plastic for liquids, with a screwed into a formed as a threaded spigot of the container bung plug made of plastic or metal and a latchable on the bung plug plastic sealing cap for detecting tampering according to the preamble of Ansprüchs 1, as out WO 2008/139196 A known.

Die Siegelkappe eines ähnlichen in der EP 1 697 224 B1 beschriebenen Spundstopfenverschlusses für Spundbehälter weist elastische Schenkel auf, die sich axial in die Stopfenmulde erstrecken und einen radial vorstehenden Fuß besitzen. Beim Aufrasten der Siegelkappe auf den in den Spundstutzen eines Spundbehälters eingeschraubten Spundstopfen tauchen die elastischen Schenkel der Siegelkappe in die Stopfenmulde ein und die Schenkelfüße verrasten mit radialen Hinterschneidungen, die an der Basis der Schlüsseleingreifösen gebildet sind. Der äußere Durchmesser der kreisförmig angeordneten Schenkelfüße der Siegelkappe ist größer als der Innendurchmesser der kreisförmig angeordneten, nach außen gewölbten Innenwände der Schlüsseleingreifösen des Spundstopfens mit den Hinterschneidungen zum Einrasten der Schenkelfüße der Siegelkappe. Diese Geometrie des Verschlussstopfens und der Siegelkappe führt zu Schwierigkeiten beim Aufrasten der Siegelkappe auf den Verschlussstopfen in automatischen Abfüllanlagen für Flüssigkeiten, da zu Beginn des Aufrastvorgangs die elastischen Schenkel der Siegelkappe mit den Rastfüßen auf den oberen Rand der Schlüsseleingreifösen des Spundstopfens des zu verschließenden Behälters auftreffen und nicht durch die Innenwände der Schlüsseleingreifösen des Spundstopfens geführt sind sondern zunächst so weit zusammengedrückt werden müssen, dass die Rastfüße mit den Innenwänden der Schlüsseleingreifösen in Eingriff gelangen können.The sealing cap of a similar in the EP 1 697 224 B1 described bung plug closure for bung container has elastic legs which extend axially into the plug well and have a radially projecting foot. When the sealing cap is snapped onto the bung plug screwed into the bung of a bung container, the elastic legs of the sealing cap dip into the plug well and the leg feet engage with radial undercuts formed at the base of the key engagement eyelets. The outer diameter of the circularly arranged leg feet of the sealing cap is greater than the inner diameter of the circularly arranged, outwardly curved inner walls of the key gripping lugs of the bung plug with the undercuts for engaging the leg feet of the sealing cap. This geometry of the sealing plug and the Sealing cap leads to difficulties in snapping the sealing cap on the stopper in automatic filling systems for liquids, since at the beginning of Aufrastvorgangs the elastic legs of the sealing cap with the locking feet on the upper edge of the key gripping lugs of the bung of the container to be closed hitting and not through the inner walls of the key gripping eyelets the bung stopper are guided but first must be compressed so far that the locking feet can engage with the inner walls of the key locking eyelets.

Aus der US 5 348 184 A ist ein Originalitätsverscluss für eine Ausgusstülle eines Behälters bekannt, bei dem ein Rastdeckel mit einer Schürze und von dieser radial nach außen vorspringenden Ringwulst in eine Behälteröffnung mit zylindrischer Innenwand eingesetzt wird. Die Innenwand ist ihrerseits mit einem ringförmig radial nach innen vorstehenden Gegenrastelement versehen, derart, dass nach einem Einführen der Schürze des Rastdeckels in die Behälteröffnung eine die Position des Rastdeckels sicherndes Verrasten der Ringwulst mit dem Gegenrastelement erfolgt.From the US 5,348,184 A a tamper-evident closure for a spout of a container is known, in which a detent cover with an apron and from this radially outwardly projecting annular bead is inserted into a container opening with a cylindrical inner wall. The inner wall is in turn provided with a ring-shaped radially inwardly projecting counter-latching element, such that after insertion of the skirt of the latching lid into the container opening, a position of the latching lid locking locking the annular bead takes place with the counter-latching element.

Der Erfindung liegt die Aufgabe zugrunde, einen für automatische Abfüllanlagen für Spundbehälter, insbesondere Spundfässer, geeigneten Spundstopfenverschluss zu entwickeln.The invention has for its object to develop a suitable for automatic filling systems for bung, in particular bung barrels, bung closure.

Diese Aufgabe wird erfindungsgemäß gelöst durch einen Spundstopfenverschluss für Spundbehälter mit den Merkmalen des Patentanspruchs 1.This object is achieved by a bung stopper for bung container with the features of claim 1.

Die Unteransprüche beinhalten vorteilhafte und zweckmäßige Weiterbildungen der Erfindung.The subclaims contain advantageous and expedient developments of the invention.

Die Erfindung ist nachstehend anhand von Zeichnungsfiguren erläutert, die folgendes darstellen:

Fig.1
einen Längsschnitt einer ersten Ausführungsform eines Spundstopfenverschlusses für einen Spundbehälter,
Fig. 2
die Draufsicht des Spundstopfens,
Fig. 3
eine perspektivische Innenansicht der Siegelkappe des Spundstopfens und
Fig. 4
einen Längsschnitt einer zweiten Ausführungsform des Spundstopfenverschlusses.
The invention is explained below with reference to drawings, which show:
Fig.1
a longitudinal section of a first embodiment of a bung stopper for a bung container,
Fig. 2
the top view of the bung plug,
Fig. 3
an interior perspective view of the sealing cap of the bung stopper and
Fig. 4
a longitudinal section of a second embodiment of the bung stopper.

Der Spundstopfenverschluss 1 nach den Figuren 1 bis 3 für Spundbehälter 2 aus Kunststoff wie Spundfässer für Flüssigkeiten wird durch einen als Gewindestutzen ausgebildeten Spundstutzen 3 des Behälters 2, einen in den Spundstutzen 3 einschraubbaren Spundstopfen 4 aus Kunststoff oder Metall sowie eine auf den Spundstopfen 4 aufrastbare Siegelkappe 5 aus Kunststoff zum Nachweis von Manipulationen gebildet. Der Spundstopfen 4 ist mittels eines Dichtringes 6 in dem Spundstutzen 3 abgedichtet.The bung stopper 1 after the FIGS. 1 to 3 for bung 2 made of plastic such as bung casks for liquids is formed by a trained as a threaded spigot 3 of the container 2, a screwed into the bung 3 bung stopper 4 made of plastic or metal and a latchable on the bung 4 sealing cap 5 made of plastic for the detection of tampering. The bung stopper 4 is sealed by means of a sealing ring 6 in the bung 3.

Der becherförmige Spundstopfen 4 weist eine zylindrische Außenwand 7 mit einem Außengewinde 8 auf, an deren Innenumfang 9 Schlüsseleingreifösen 10 für einen Steckschlüssel konzentrisch zur Stopfenmittelachse 11-11 angeordnet sind, die sich radial und axial in die Stopfenmulde 12 des Spundstopfens 4 erstrecken.The cup-shaped bung stopper 4 has a cylindrical outer wall 7 with an external thread 8, on the inner circumference 9 key gripping lugs 10 are arranged for a socket wrench concentric with the plug central axis 11-11 extending radially and axially into the plug recess 12 of the bung stopper 4.

An die Innenseite 13 der Siegelkappenscheibe 14 ist mittels Abreißstegen 15 eine konzentrische, begrenzt elastische Klemmhülse 16 angebunden, die sich axial in die Stopfenmulde 12 erstreckt und an ihrem inneren Ende 17 ein radial in die Stopfenmulde 12 vorspringendes, ringförmiges Rastelement 18 aufweist zum Verrasten mit ringsegmentförmigen, in die Stopfenmulde 12 radial vorspringenden Gegenrastelementen 19 am unteren Abschnitt 20 der nach außen gewölbten, zylindersegmentförmigen Innenwände 21 der Schlüsseleingreifösen 10.To the inner side 13 of the sealing cap 14 a concentric, limited elastic clamping sleeve 16 is connected by Abreißstegen 15, which extends axially into the plug recess 12 and at its inner end 17 has a radially projecting into the plug recess 12, annular locking element 18 for locking with ring segment-shaped in the plug recess 12 radially projecting counter-latching elements 19 at the lower portion 20 of the outwardly curved, cylinder-segment-shaped inner walls 21 of the key locking eyelets 10th

Das ringförmige Rastelement 18 der Klemmhülse 16 der Siegelkappe 5 und die ringsegmentförmigen Gegenrastelemente 19 an den Schlüsseleingreifösen 10 des Spundstopfens 4 weisen hakenförmige Querschnittsprofile 22, 23 auf.The annular detent element 18 of the clamping sleeve 16 of the sealing cap 5 and the ring-segment-shaped counter-locking elements 19 on the key-locking eyelets 10 of the bung stopper 4 have hook-shaped cross-sectional profiles 22, 23.

Der Außendurchmesser D1 des ringförmigen Rastelementes 18 an der Klemmhülse 16 der Siegelkappe 5 ist annähernd gleich dem Durchmesser D2 der Innenwände 21 der Schlüsseleingreifösen 10 des Spundstopfens 4, derart, dass beim Aufrasten der Siegelkappe 5 auf den in den Spundstutzen 3 eingeschraubten Spundstopfen 4 das ringförmige Rastelement 18 am inneren Ende 17 der Klemmhülse 16 der Siegelkappe 4 vor dem Verrasten mit den Gegenrastelementen 19 an den Innenwänden 21 der Schlüsseleingreifösen 10 des Spundstopfens 4 durch die Innenwände 21 der Schlüsseleingreifösen 10 geführt ist.The outer diameter D 1 of the annular locking element 18 on the clamping sleeve 16 of the sealing cap 5 is approximately equal to the diameter D 2 of the inner walls 21 of the key locking eyes 10 of the bung stopper 4, such that when snapping the sealing cap 5 on the screwed into the bung 3 bung stopper 4 the annular detent element 18 is guided at the inner end 17 of the clamping sleeve 16 of the sealing cap 4 before locking with the counter-locking elements 19 on the inner walls 21 of the key locking eyelets 10 of the bung stopper 4 through the inner walls 21 of the key locking eyelets 10.

Diese Funktionsweise von Siegelkappe 5 und Spundstopfen 4 beim Aufrasten der Siegelkappe auf den Spundstopfen ermöglicht ein maschinelles Verschließen der Spundstutzen 3 von Spundbehältern 2 in automatischen Abfüllanlagen, insbesondere für Spundfässer.This mode of operation of sealing cap 5 and bung stopper 4 when the sealing cap is snapped onto the bung stopper makes it possible to mechanically close the bung nipples 3 of bunghouses 2 in automatic filling plants, in particular for bung drums.

Bei einer weiteren nicht dargestellten Ausführungsform des Spundstopfenverschlusses besitzen das ringförmige Rastelement 18 am inneren Ende 17 der Klemmhülse 16 der Siegelkappe 5 und die ringsegmentförmigen Gegenrastelemente 19 an den Schlüsseleingreifösen 10 des Spundstopfens 4 ein zungenförmiges Querschnittsprofil.In a further embodiment, not shown, of the bung stopper, the annular detent element 18 at the inner end 17 of the clamping sleeve 16 of the sealing cap 5 and the ring segment-shaped counter-locking elements 19 have a tongue-shaped cross-sectional profile at the key locking eyelets 10 of the bung stopper 4.

Bei der in Figur 4 dargestellten weiteren Ausführungsform des Spundstopfenverschlusses 1 ist das ringförmige Rastelement 18 am inneren Ende 17 der Klemmhülse 16 der Siegelkappe 5 mit vorzugsweise drei Zahnringen 24 zum Verrasten mit drei entsprechenden Zahnringsegmenten 25 der Gegenrastelemente 19 an den Schlüsseleingreifösen 10 des Spundstopfens 4 ausgestattet.At the in FIG. 4 shown further embodiment of the bung stopper 1, the annular locking element 18 at the inner end 17 of the clamping sleeve 16 of the sealing cap 5 with preferably three toothed rings 24 for locking with three corresponding toothed ring segments 25 of the counter-locking elements 19 are provided on the key locking eyelets 10 of the bung stopper 4.

Die Klemmhülse 16 der Siegelkappe 5 ist außer durch die Abreißstege 15 durch eine Aufreißlasche 26 mit der Siegelkappenscheibe 14 verbunden, wobei die Aufreißlasche 26 in die Siegelkappenscheibe 14 integriert ist.The clamping sleeve 16 of the sealing cap 5 is connected except by the tear-off webs 15 by a pull-tab 26 with the sealing cap 14, wherein the pull-tab 26 is integrated into the sealing cap 14.

Die Siegelkappe 5 ist mit einer äußeren Abreißlasche 27 ausgestattet, die an einen Abreißring 28 angeformt ist, der durch Abreißstege 29 und einen Haltesteg 30 an den nach unten gerichteten äußeren Rand 31 der Siegelkappe 5 angebunden ist.The sealing cap 5 is provided with an outer tear-off tab 27, which is integrally formed on a tear-off ring 28 which is connected by tear-off webs 29 and a holding web 30 to the downwardly directed outer edge 31 of the sealing cap 5.

Beim Abreißen der Siegelkappe 5 von dem Spundstopfen 4 mittels der Abreißlasche 27 werden zuerst die Abreißstege 29 des Abreißringes 28 der Abreißlasche 27 zerstört und danach werden die Abreißstege 15, mit denen die Klemmhülse 16 an die Siegelkappenscheibe 14 angebunden ist, durchtrennt. Bei diesem Abreißvorgang sorgen der Haltesteg 30 des Abreißringes 28 der Abreißlasche 27 und die in die Siegelkappenscheibe 14 integrierte Aufreißlasche 26, die mit der Klemmhülse 16 verbunden ist, dafür, dass der Abreißring 28 mit der Abreißlasche 27, die Siegelkappenscheibe 14 und die Klemmhülse 16 der Siegelkappe 5 lose miteinander verbunden bleiben und damit die Siegelkappe 5 mit ihren einzelnen Bestandteilen auf eine einfache Weise von dem Spundstopfen 4 entfernt werden kann.When tearing off the sealing cap 5 of the bung stopper 4 by means of the tear-off tab 27, the tear-off webs 29 of the tear-off ring 28 of the tear-off tab 27 are destroyed first and then the tear-off webs 15, with which the clamping sleeve 16 is connected to the sealing cap disk 14, are severed. In this tearing off the holding web 30 of the tear-off 28 of the tear-off 27 and integrated into the sealing cap 14 tear tab 26 which is connected to the clamping sleeve 16, ensure that the tear-off 28 with the tear-off tab 27, the sealing cap 14 and the clamping sleeve 16 of Seal cap 5 loosely connected to each other and thus the sealing cap 5 can be removed with their individual components in a simple manner from the bung stopper 4.

Claims (6)

  1. A bunghole plug closure (1) for a bunghole container (2), in particular for bunghole casks made of plastic for fluids, with a bunghole plug (4) of plastic or metal which can be screwed into a bunghole connection piece (3) of the container, said bunghole connection piece being formed as a threaded connection piece, as well as a sealing cap (5) of plastic, which can be locked onto the bunghole plug to provide evidence of tampering, wherein the cup-shaped bunghole plug comprises a cylindrical outer wall (7) with an external thread (8), on the inner periphery whereof key engagement eyelets (10) for a socket key are disposed concentric with the central axis of the plug, said key engagement eyelets extending radially and axially into the plug trough of the bunghole plug (4), wherein the sealing cap (5) comprises a sealing cap disk (14) and a concentric, restrictedly elastic clamping sleeve (16), which is fastened to the inner side (13) of the sealing cap disk (14) by means of tear-off webs (15) and which extends axially into the plug trough (12) and comprises at its inner end (17) an annular locking element (18) projecting radially into the plug trough (12) for locking with annular-segment-shaped counter-locking elements (19) at the lower section (20) of the outwardly arched, cylinder-segment-shaped inner walls (21) of the key engagement eyelets (10), said counter-locking elements projecting radially into the plug trough (12),
    characterised in that
    external diameter (D1) of the annular locking element (18) at the clamping sleeve (16) of the sealing cap (5) is approximately equal to the diameter (D2) of the inner walls (21) of the key engagement eyelets (10) of the bunghole plug (4), in such a way that, when the sealing cap (5) is locked onto the bunghole plug (4) screwed into the bunghole connection piece (3), the annular locking element (18) at the inner end (17) of the clamping sleeve (16) of the sealing cap (5) is guided through the inner walls (21) of the key engagement eyelets (10) before the locking with the counter-locking elements (19) projecting radially from the inner walls (21) of the key engagement eyelets (10) of the bunghole plug (3) into the plug trough (7).
  2. The bunghole plug closure according to claim 1, characterised in that the annular locking element (18), at the inner end (17) of the clamping sleeve (16) of the sealing cap (5), and the annular-segment-shaped counter-locking elements (19), at the key engagement eyelets (10) of the bunghole plug (4), comprise hook-shaped cross-sectional profiles (22, 23).
  3. The bunghole plug closure according to claim 1, characterised in that the annular locking element (18), at the inner end (17) of the clamping sleeve (16) of the sealing cap (5), and the annular-segment-shaped counter-locking elements (19), at the key engagement eyelets (10) of the bunghole plug (4), comprise a tongue-shaped cross-sectional profile.
  4. The bunghole plug closure according to claim 1, characterised in that the annular locking element (18), at the inner end (17) of the clamping sleeve (16) of the sealing cap (5), is provided with a plurality of toothed rings (24) for locking with corresponding toothed-ring segments (25) of the counter-locking elements (19) at the key engagement eyelets (10) of the bunghole plug (4).
  5. The bunghole plug closure according to any one of claims 1 to 4, characterised in that the clamping sleeve (16) of the sealing cap (5) is connected to the sealing cap disk (14) by tear-off webs (15) and a tear-off tab (26) integrated into the sealing cap disk (14).
  6. The bunghole plug closure according to any one of claims 1 to 5, characterised by an outer tear-off tab (27) which is formed integrally with a tear-off ring (28), which is fastened by tear-off webs (29) and a holding web (30) to the downwardly directed outer edge (31) of the sealing cap (5).
EP10162832.9A 2009-05-27 2010-05-14 Tamper-evident bung seal for bung container Active EP2256056B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009022800A DE102009022800B3 (en) 2009-05-27 2009-05-27 Bung plug closure for bung container

Publications (3)

Publication Number Publication Date
EP2256056A1 EP2256056A1 (en) 2010-12-01
EP2256056B1 true EP2256056B1 (en) 2011-06-22
EP2256056B2 EP2256056B2 (en) 2018-07-04

Family

ID=42332781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10162832.9A Active EP2256056B2 (en) 2009-05-27 2010-05-14 Tamper-evident bung seal for bung container

Country Status (7)

Country Link
US (2) US20100301046A1 (en)
EP (1) EP2256056B2 (en)
KR (1) KR101231102B1 (en)
AT (1) ATE513754T1 (en)
DE (1) DE102009022800B3 (en)
ES (1) ES2368480T5 (en)
SA (1) SA110310389B1 (en)

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WO2018149763A1 (en) * 2017-02-16 2018-08-23 Greif International Holding Bv Closure caps and closures
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Also Published As

Publication number Publication date
ES2368480T3 (en) 2011-11-17
DE102009022800B3 (en) 2010-08-19
US20170152077A1 (en) 2017-06-01
US10059490B2 (en) 2018-08-28
SA110310389B1 (en) 2013-12-22
KR20100128235A (en) 2010-12-07
ES2368480T5 (en) 2018-11-16
KR101231102B1 (en) 2013-02-07
EP2256056A1 (en) 2010-12-01
US20100301046A1 (en) 2010-12-02
ATE513754T1 (en) 2011-07-15
EP2256056B2 (en) 2018-07-04

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