EP2566768A1 - Screw closure for soft packagings - Google Patents

Screw closure for soft packagings

Info

Publication number
EP2566768A1
EP2566768A1 EP11709055A EP11709055A EP2566768A1 EP 2566768 A1 EP2566768 A1 EP 2566768A1 EP 11709055 A EP11709055 A EP 11709055A EP 11709055 A EP11709055 A EP 11709055A EP 2566768 A1 EP2566768 A1 EP 2566768A1
Authority
EP
European Patent Office
Prior art keywords
spout
cap
screw
screw cap
thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11709055A
Other languages
German (de)
French (fr)
Other versions
EP2566768B1 (en
Inventor
Dirk Ekenhorst
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2566768A1 publication Critical patent/EP2566768A1/en
Application granted granted Critical
Publication of EP2566768B1 publication Critical patent/EP2566768B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
    • B65D5/748—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being left inside the container after the opening
    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
    • 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
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall

Definitions

  • the present invention relates to a screw cap for soft packaging, namely film bag, consisting of a mounted on the foil bag spout with external thread and a mounting flange, and a screw-on the spout cap with a jacket wall and a top surface.
  • Screw caps for rigid packaging such as glass or plastic bottles, are widely used.
  • rigid packaging the packaging of rigid packaging, such as glass or plastic bottles, are widely used.
  • Screw closures essentially ensure only a sealing function in the fully closed state.
  • seals in particular seals are used which comprises arranged in the corner region between the shell wall and the inside of the top surface sealing elements.
  • Typical examples of such seals are shown in WO-A-9011944 or also WO-A-9011232, as well as WO-A-9731834.
  • Another type of seals on screw caps are the so-called sealing olives, which essentially as a coaxial with Mantle wall of the screw cap extending annular wall are designed, which are directed vertically downwards formed on the underside of the top surface and which seal the container neck or the spout on the inside.
  • the spout is formed of a separate part consisting of the actual cylindrical tubular spout, with a flange integrally formed thereon for attachment of that part of the screw cap to the soft packaging.
  • the second variant consists in that the film bag is completely closed, and that on the inner wall of the spout in addition an internal thread is arranged, in which an annular cutting element is arranged transachsial movable, which is movable via drivers on the top surface of the cap, and by means of Screwing movement of the cap the cutting element, which, at the lower edge, directed towards the film of the film bag, has at least one cutting tooth by means of which the film of the film bag can be cut open.
  • an annular cutting element is arranged transachsial movable, which is movable via drivers on the top surface of the cap, and by means of Screwing movement of the cap the cutting element, which, at the lower edge, directed towards the film of the film bag, has at least one cutting tooth by means of which the film of the film bag can be cut open.
  • Typical examples of this kind are known from CH-A-695019 or EP-A-1795456 and various other documents.
  • the screw caps may additionally be provided with guarantee bands.
  • a circumferential sealing lug is formed on the jacket wall of the screw cap directly above the internal thread, which comes into direct contact in the region of the upper edge of the outlet when completely screwed into place and slightly over this edge can extend downwards.
  • the seal will no longer be engaged even at a low angle of rotation, and consequently also unusable for the use of interest here.
  • plastic fasteners could hardly be manufactured with high precision.
  • the then emerging seals in screw caps which were mounted in particular from curved annular sealing lips on the cap deck surface bottom, but required a high precision so that they were even demoldable.
  • the solution should be applicable both for conventional screw caps, the spout is mounted over an existing opening in the soft packaging, as well as in particular for soft packaging which are completely closed aseptically, and inside the spout have a cutting element which the soft packaging when opening the screw cap cuts open.
  • Fig. 2 is a diametrical vertical section through a
  • Fig. 3 shows a second embodiment of the inventive
  • FIG. 4 shows the same screw in a partially open intermediate position in which the threads on the spout and the screw cap are still engaged
  • Fig. 5 in turn the same screw, wherein the
  • Screw cap is opened so far that the threads mentioned are no longer engaged, but still a sealing situation exists while
  • Fig. 6 shows the screw cap according to the invention in a fully open position.
  • FIG. 1 shows the screw situation when a screw cap is opened, which is mounted on a soft packaging 1.
  • the soft packaging may be a laminated cardboard packaging or, as particularly important here, a foil bag, as shown in FIG.
  • the user holds the bag with one hand, while he unscrews the screw 2 with the other hand. He exerts a force F on the foil bag. This force increases the internal pressure in the foil bag.
  • the Schaub closure 2 is a conventional design, the increased internal pressure causes liquid to escape between the spout and the screw cap 5.
  • the solution according to the invention provides a remedy here.
  • a first embodiment of the subject invention is now shown.
  • the screw cap is shown with a total of 1.
  • a screw cap 5 and on the other hand, a lower part, which consists of a tubular, cylindrical spout 3, at the lower edge in one piece a radially projecting flange 4 is formed.
  • an external thread 6 is formed on the outside of the tubular spout 3.
  • the thread-free portion 7 is preferably at least as long as the axially extending portion 8, in which the external thread 6 is mounted.
  • the cap 5 essentially has the general structure of screw caps. It has a top surface 50 on which a shell wall 51 is pulled down.
  • the jacket wall 51 is designed substantially cylindrical. Unusually, only that on the jacket wall 51, in the lower region, an internal thread 52 is provided, which fits on the already mentioned external thread 6 of the spout 3. Above the internal thread 52, an internal thread-free region 53, which is approximately the same size as the unthreaded section 7 of the spout 3, follows.
  • circumferential sealing beads 54 are present here. These sealing beads 54 form a static seal in the closed state of the closure which also withstands high internal pressure loads.
  • a sliding seal 10 is formed on the inner surface of the jacket wall 51 of the cap 5. This sliding seal 10 is applied with a predetermined pressure on the outside of the spout 3.
  • the screw 5 is already screwed a piece. If the screw cap 5 were shown in the fully screwed-on position, the sealing beads 54 would rest on the upper edge of the spout 3 and the sliding seal 10 would abut the spout 3 just above the region 8 of the external thread 6. In this arrangement, the cap can now be unscrewed so far that the external thread 6 of the spout 3 with the internal thread 52 of the cap 5 is no longer engaged and the sliding seal 10 just rests against the outer surface of the spout 3.
  • the shape of the sliding seal 10 chosen here is one possible embodiment among many. It is only important that the sliding seal is under a certain deformation force.
  • the spout 3 must have a certain suit for demolding, so that the inner diameter at the upper edge is slightly smaller than the inner diameter in the region of the flange 4. In addition, but also decreases the wall thickness of the spout 3 from the region of the flange to the upper edge slightly, so that a total of the spout 3 in the unthreaded portion 7 slightly conical runs and the sliding seal 10 must be able to follow this conicity and still rest in the uppermost area with a certain pressure.
  • the sliding seal in the form of a circumferential downwards, ie with its flexible tip to the flange directed apron be.
  • These sealing lips can, for example, protrude practically perpendicularly from the casing wall inside, and when placed these are automatically arched upwards. This has the great advantage that the internal pressure acting on the sealing lips, the sealing lip presses reinforced to the spout.
  • the above-mentioned cutting element 20 is mounted for screwing.
  • the cutting element 20 is moved with an external thread 25, which runs in the internal thread 22 of the spout 3 down and thereby cuts by means of the at least one cutting tooth 21, the film F.
  • a sliding seal 10 is present, which is clearly visible in the figure 6.
  • a seal on the inside of the spout is not possible here.
  • the screw cap can additionally be provided with a guarantee strip 40, which can be mounted in a form-fitting manner behind a peripheral collar 30 on the spout 3 below the external thread.
  • a guarantee strip 40 which can be mounted in a form-fitting manner behind a peripheral collar 30 on the spout 3 below the external thread.
  • a guarantee strip 40 which likewise engages behind the collar 30, is shown, but this guarantee strip is removed, for example, by means of a tear-off tab, again with the predetermined breaking point bridges which connect the guarantee band to the guarantee band Connect screw cap, destroyed.
  • the predetermined breaking point bridges are designated 41.
  • the solution according to the invention can also be realized by replacing the sliding seal on the outer wall 51 of the cap 5 the spout install.
  • two variants come into question, namely to install either the sliding seal directly above the thread or in the region of the upper edge of the spout 3.
  • the sliding seal must then be designed to be relatively long to seal over the unevenness of the thread to be able to.
  • the mechanical seal can be shorter in the radial extent and consequently also here several sealing lips come into question, while in the first version preferably apron-like mechanical seals are useful.

Abstract

A screw closure (2) is provided on a soft packaging (1), preferably a film bag. Said screw closure consists of a first part, which consists of a spout having a fastening flange (4) for connecting to the soft packaging (1), and a second part (2) in the form of a screw cap (5). The screw cap has a top surface (50) and a lateral wall (51) having an internal thread (52) present in the lower region. Above the internal thread there is a thread-free portion (53), in the upper region of which a sliding seal (10) is arranged. The sliding seal (10) presses on a likewise thread-free region (7) of the spout above the external thread (6) disposed on the spout. A screw closure that is leak-proof even during unscrewing is thus achieved.

Description

Schraubverschluss für Weichverpackungen  Screw cap for soft packaging
Die vorliegende Erfindung betrifft einen Schraubverschluss für Weichverpackungen, nämlich Folienbeutel, bestehend aus einem auf dem Folienbeutel angebrachten Ausguss mit Aussengewinde und mit einem Befestigungsflansch, sowie einer auf den Ausguss aufschraubbaren Kappe mit einer Mantelwand und einer Deckfläche. Schraubverschlüsse für rigide Verpackungen, wie Glas- oder Kunststoffflaschen sind weit verbreitet. Bei diesen herkömmlichen, rigiden Verpackungen müssen dieThe present invention relates to a screw cap for soft packaging, namely film bag, consisting of a mounted on the foil bag spout with external thread and a mounting flange, and a screw-on the spout cap with a jacket wall and a top surface. Screw caps for rigid packaging, such as glass or plastic bottles, are widely used. In these conventional, rigid packaging, the
Schraubverschlüsse im Wesentlichen nur eine dichtende Funktion im vollständig geschlossenen Zustand sicherstellen. Dies geschieht mit verschiedenen Formen von Dichtungen, wobei insbesondere Dichtungen verwendet werden, die im Eckbereich zwischen der Mantelwand und der Innenseite der Deckfläche angeordnete Dichtelemente umfasst. Typische Beispiele solcher Dichtungen zeigen die WO-A-9011944 oder auch die WO-A- 9011232, sowie die WO-A-9731834. Ein anderer Typus von Dichtungen an Schraubverschlüssen stellen die sogenannten Dichtoliven dar, welche im Wesentlichen als eine koaxial zur Mantelwand der Schraubkappe verlaufende Ringwand gestaltet sind, die senkrecht nach unten gerichtet an der Unterseite der Deckfläche angeformt sind und die den Behälterhals bzw. den Ausguss auf der Innenseite abdichten. Ein typisches Beispiel einer solchen Dichtolive zeigen die Dokumente DE-A- 44 Ol 751 oder die US-A-4, 253, 581. Auch Kombinationen der beiden vorerwähnten Typen sind bekannt, wie dies beispielsweise die EP-A-417554 zeigt. Bei Weichverpackungen, in der Form von Folienbeutel, wird der Ausguss aus einem separaten Teil gebildet, der aus dem eigentlichen, zylindrischen, rohrförmigen Ausguss besteht, mit einem einstückig daran angeformten Flansch, der zur Befestigung dieses Teiles des Schraubverschlusses auf der Weichverpackung dient. Bei dieser Form der Schraubverschlüsse sind im Prinzip zwei unterschiedliche Varianten bekannt, nämlich solche, bei denen im Bereich des Ausgusses in der Folie der Weichverpackung ein Loch ausgestanzt ist, welches in direkter, kommunizierender Verbindung mit dem Ausguss steht, und wobei der Flansch um dieses ausgestanzte Loch herum aufgeklebt oder aufgeschweisst ist. Die zweite Variante besteht darin, dass der Folienbeutel vollständig verschlossen ist, und dass auf der Innenwand des Ausgusses zusätzlich ein Innengewinde angeordnet ist, in dem ein ringförmiges Schneidelement transachsial beweglich angeordnet ist, welches über Mitnehmer an der Deckfläche der Kappe bewegbar ist, und mittels der Schraubbewegung der Kappe das Schneidelement, welches an der unteren Kante, zur Folie des Folienbeutels hin gerichtet, mindestens einen Schneidzahn aufweist, mittels dem die Folie des Folienbeutels aufschneidbar ist. Typische Beispiele dieser Art sind aus der CH-A-695019 oder der EP-A- 1795456 und diversen anderen Dokumenten bekannt. Screw closures essentially ensure only a sealing function in the fully closed state. This is done with various forms of seals, in particular seals are used which comprises arranged in the corner region between the shell wall and the inside of the top surface sealing elements. Typical examples of such seals are shown in WO-A-9011944 or also WO-A-9011232, as well as WO-A-9731834. Another type of seals on screw caps are the so-called sealing olives, which essentially as a coaxial with Mantle wall of the screw cap extending annular wall are designed, which are directed vertically downwards formed on the underside of the top surface and which seal the container neck or the spout on the inside. A typical example of such a sealing olive show the documents DE-A-44 Ol 751 or US-A-4, 253, 581. Combinations of the two aforementioned types are known, as shown for example in EP-A-417554. In soft packaging, in the form of foil pouches, the spout is formed of a separate part consisting of the actual cylindrical tubular spout, with a flange integrally formed thereon for attachment of that part of the screw cap to the soft packaging. In this form of screw caps two different variants are known in principle, namely those in which a hole is punched out in the region of the spout in the film of the soft packaging, which is in direct, communicating connection with the spout, and wherein the flange punched around this Hole is glued or welded around. The second variant consists in that the film bag is completely closed, and that on the inner wall of the spout in addition an internal thread is arranged, in which an annular cutting element is arranged transachsial movable, which is movable via drivers on the top surface of the cap, and by means of Screwing movement of the cap the cutting element, which, at the lower edge, directed towards the film of the film bag, has at least one cutting tooth by means of which the film of the film bag can be cut open. Typical examples of this kind are known from CH-A-695019 or EP-A-1795456 and various other documents.
Bei beiden Typen dieser Schraubverschlüsse auf Folienbeutel können die Schraubkappen zusätzlich noch mit Garantiebänder versehen sein. For both types of screw caps on foil bags, the screw caps may additionally be provided with guarantee bands.
Da vielfach die AufSchraubbewegung der Schraubkappe eine relativ hohe Reibkraftüberwindung benötigen, muss der Benutzer die Weichverpackung mit relativ starker Kraft halten, während er gleichzeitig die Kappe aufschraubt. Durch diese hohe Haltekraft wird die Weichverpackung deformiert und der Innendruck in der Weichverpackung erhöht. Sobald nun die Schraubkappe mit der üblichen, im Eckbereich zwischen Mantelwand und Deckfläche angebrachten Dichtung nun auch geringfügig geöffnet wird, so ist diese Dichtung nicht mehr wirksam. Während dies bei rigiden Verpackungen kein Problem darstellt, ist dies bei Weichverpackungen äusserst problematisch, da der Benutzer auch weiterhin Kraft ausüben muss um den Verschluss vollständig zu öffnen, und da nun die erwähnte Dichtung nicht mehr wirksam ist, wird der Inhalt nach aussen gepresst, auch wenn dies nur in geringen Mengen ist, so ist dies unästhetisch, unhygienisch und führt oftmals auch zum Verkleben der Verschlüsse nach dem späteren Zusammenschrauben . Since the Aufrachubbewegung the screw cap often require a relatively high Reibkraftüberwindung, the user must hold the soft packaging with relatively strong force while he unscrews the cap. Due to this high holding force, the soft packaging is deformed and the internal pressure in the soft packaging is increased. As soon as the screw cap with the usual, in the corner region between the shell wall and top surface attached seal is now also slightly open, so this seal is no longer effective. While this is not a problem with rigid packaging, this is extremely problematic in soft packaging since the user must continue to exert force to fully open the closure, and now that the mentioned seal is no longer effective, the contents are pressed outwards, too if this is only in small amounts, then this is unaesthetic, unhygienic and often leads also for gluing the closures after later screwing together.
Bei einfachen Schraubverschlüssen ohne einem innen laufenden Schneidelement wäre es prinzipiell denkbar die Dichtung aufrecht zu erhalten mittels einer genügend tief in den Ausguss hineinragenden Dichtolive. Sobald aber der Schraubverschluss mit einem inneren Schneidelement versehen ist, so ist diese Art der Dichtung unmöglich. Auch eine Dichtung gemäss der DE-A-39 38 713 vermag diesbezüglich keine Abhilfe zu schaffen. Bei dieser Lösung sind an der Unterseite der Deckfläche der Schraubkappe zwei konzentrische Ringwände angeordnet, die beidseitig, also innenseitig und aussenseitig als Gleitdichtungen am Ausguss anliegen. Eine solche Lösung ist wiederum bei Schraubeverschlüssen die ein Schneidelement aufweisen, nicht realisierbar. Eine etwas exotische Lösung zeigt die US-Patentschrift US-A-4 , 371 , 091. Hier ist an der Mantelwand der Schraubkappe direkt oberhalb des Innengewindes eine umlaufende Dichtnase angeformt, die bei vollständiger Verschraubung direkt im Bereich der Ausgussoberkante zum Anliegen kommt und geringfügig über diese Kante nach unten sich erstrecken kann. Auch bei einer solchen Lösung wird die Dichtung auch bei einem geringen Aufdrehwinkel bereits nicht mehr im Eingriff sein, und folglich für die hier interessierende Benutzung ebenfalls unbrauchbar sein. In den 60er Jahren des vorherigen Jahrhunderts Hessen sich KunststoffVerschlüsse mit hoher Präzision noch kaum fertigen. Die damals aufkommenden Dichtungen bei Schraubverschlüssen, die insbesondere aus gewölbten ringförmigen Dichtlippen an der Kappendeckflächeunterseite angebracht wurden, verlangten jedoch eine hohe Präzision, damit diese überhaupt entformbar waren. Aus diesem Grund wurde in der GB-1205887 A eine Lösung vorgeschlagen, bei der am oberen Ende des Ausgusses eine Gleitfläche vorgesehen war, an der ringförmige Dichtwulste auf der Innenseite der Schraubkappe oberhalb dessen Innengewinde dichtend anlagen. Da es sich hierbei um Flaschen handelte, hatte die Dichtung im Wesentlichen den Zweck den Verschluss im geschlossenen Zustand zu dichten. Nach einer gewissen AufSchraubbewegung befanden sich die Dichtungen nicht mehr mit dem Ausguss im Eingriff, was bekanntlich aber auch bei Flaschen nicht erforderlich ist. In simple screw caps without an internal cutting element, it would be conceivable in principle to maintain the seal by means of a sufficiently deep projecting into the spout sealing olive. But as soon as the screw cap is provided with an inner cutting element, this type of seal is impossible. A seal according to DE-A-39 38 713 can not provide any remedy in this regard. In this solution, two concentric annular walls are arranged on the underside of the top surface of the screw cap, which rest on both sides, ie on the inside and on the outside as sliding seals on the spout. Such a solution is in turn screw closures having a cutting element, not feasible. A somewhat exotic solution is shown in US-A-4, 371, 091. Here, a circumferential sealing lug is formed on the jacket wall of the screw cap directly above the internal thread, which comes into direct contact in the region of the upper edge of the outlet when completely screwed into place and slightly over this edge can extend downwards. Even with such a solution, the seal will no longer be engaged even at a low angle of rotation, and consequently also unusable for the use of interest here. In the 60s of the previous century, plastic fasteners could hardly be manufactured with high precision. However, the then emerging seals in screw caps, which were mounted in particular from curved annular sealing lips on the cap deck surface bottom, but required a high precision so that they were even demoldable. For this reason, a solution has been proposed in GB 1205887 A, in which at the upper end of the spout, a sliding surface was provided on the annular sealing beads on the inside of the screw cap above the internal thread sealing. Since these were bottles, the seal had essentially the purpose of sealing the closure in the closed state. After a certain Aufrachubbewegung the seals were no longer with the spout engaged, which is known but also in bottles is not required.
In sehr ähnlicher Weise, jedoch wesentlich komplexer in der Ausgestaltung ist eine Lösung gemäss der DE-1935874 U. Hier ist die Dichtung bereits nach praktisch einer einzigen Umdrehung nicht mehr gegeben, was aber, wie bereits erwähnt, für relativ rigide Flaschen kein Problem darstellt. In a very similar manner, but much more complex in the embodiment is a solution according to DE-1935874 U. Here, the seal is no longer present after virtually a single revolution, but this, as already mentioned, is not a problem for relatively rigid bottles.
Es ist daher die Aufgabe der vorliegenden Erfindung, einen Schraubverschluss für Weicherpackungen der eingangs beschriebenen Art zu schaffen, bei dem der Verschluss auch bei anliegendem, erhöhten Druck auf die Weichverpackung, der Schraubverschluss bis zur vollständigen, abgeschlossenen Abschraubbewegung die erforderliche Dichtheit zu garantieren vermag . It is therefore an object of the present invention to provide a screw cap for soft packs of the type described above, in which the closure even with fitting, increased pressure on the soft packaging, the screw until complete, completed Abraubbewegung the required tightness can guarantee.
Hierbei soll die Lösung sowohl für herkömmliche Schraubverschlüsse anwendbar sein, deren Ausguss über einen bereits vorhandenen Öffnung in der Weichverpackung angebracht ist, wie auch insbesondere für Weichverpackungen die vollständig aseptisch verschlossen sind, und innen im Ausguss ein Schneidelement aufweisen, welches die Weichverpackung beim Öffnen des Schraubverschlusses aufschneidet. Here, the solution should be applicable both for conventional screw caps, the spout is mounted over an existing opening in the soft packaging, as well as in particular for soft packaging which are completely closed aseptically, and inside the spout have a cutting element which the soft packaging when opening the screw cap cuts open.
In der anliegenden Zeichnung sind zwei Ausführungsbeispiele des Erfindungsgegenstandes schematisch dargestellt, und in der nachfolgenden Beschreibung im Detail erläutert. Es zeigt: In the accompanying drawings, two embodiments of the subject invention are shown schematically, and explained in detail in the following description. It shows:
Fig. 1 die Handhabung eines Schraubverschlusses auf einer Fig. 1, the handling of a screw cap on a
Weichverpackung in perspektivischer Darstellung,  Soft packaging in perspective,
Fig. 2 einen diametralen Vertikalschnitt durch einen Fig. 2 is a diametrical vertical section through a
Schraubverschluss gemäss der Erfindung ohne Screw cap according to the invention without
Schneidelement, Cutting element,
Fig. 3 eine zweite Ausführungsform des erfindungsgemässen Fig. 3 shows a second embodiment of the inventive
Schraubverschlusses, wiederum in einem diametralen Vertikalschnitt, diesmal mit einem Schneidelement in der vollständig geschlossenen Position, Fig. 4 denselben Schraubverschluss in einer teilweise geöffneten Zwischenposition, bei dem die Gewinde am Ausguss und der Schraubkappe noch im Eingriff sind, Fig. 5 wiederum denselben Schraubverschluss, wobei die Screw closure, again in a diametrical vertical section, this time with a cutting element in the fully closed position, Fig. 4 shows the same screw in a partially open intermediate position in which the threads on the spout and the screw cap are still engaged, Fig. 5 in turn the same screw, wherein the
Schraubkappe soweit geöffnet ist, dass die erwähnten Gewinde nicht mehr im Eingriff sind, jedoch noch eine dichtende Situation vorhanden ist, während  Screw cap is opened so far that the threads mentioned are no longer engaged, but still a sealing situation exists while
Fig. 6 den erfindungsgemässen Schraubverschluss in einer vollständig geöffneten Position zeigt. Fig. 6 shows the screw cap according to the invention in a fully open position.
In der Figur 1 ist die Schraubsituation beim Öffnen eines Schraubverschlusses, der auf einer Weichverpackung 1 angebracht ist, dargestellt. Die Weichverpackung kann eine laminierte Kartonverpackung sein oder, wie hier insbesondere von Bedeutung, ein Folienbeutel, wie dies die Figur 1 zeigt. Bei der Öffnung des Folienbeutels 1 hält der Benutzer den Beutel mit der einen Hand, während er gleichzeitig den Schraubverschluss 2 mit der anderen Hand aufschraubt. Hierbei übt er auf den Folienbeutel eine Kraft F aus. Durch diese Kraft wird der Innendruck im Folienbeutel erhöht. Handelt es sich beim Schaubverschluss 2 um eine herkömmliche Ausführung, so führt der erhöhte Innendruck dazu, dass Flüssigkeit zwischen Ausguss und Schraubkappe 5 austreten kann. Die erfindungsgemäss Lösung schafft hier Abhilfe. In der Figur 2 ist nun eine erste Ausführungsform des Erfindungsgegenstandes dargestellt. Der Schraubverschluss wird insgesamt mit 1 bezeigt. Hierunter wird einerseits eine Schraubkappe 5 und andererseits ein unterer Teil verstanden, der aus einem rohrförmigen, zylindrischen Ausguss 3 besteht, an dessen unterem Rand einstückig ein radial abstehender Flansch 4 angeformt ist. Auf der Aussenseite des rohrförmigen Ausgusses 3 ist ein Aussengewinde 6 angeformt. Oberhalb des Aussengewindes 6 ist ein gewindefreier Abschnitt am Ausguss 3 erkennbar. Der gewindefreie Abschnitt 7 ist bevorzugterweise mindestens gleich lang wie der in axialer Richtung verlaufende Abschnitt 8, in dem das Aussengewinde 6 angebracht ist. FIG. 1 shows the screw situation when a screw cap is opened, which is mounted on a soft packaging 1. The soft packaging may be a laminated cardboard packaging or, as particularly important here, a foil bag, as shown in FIG. At the opening of the film bag 1, the user holds the bag with one hand, while he unscrews the screw 2 with the other hand. He exerts a force F on the foil bag. This force increases the internal pressure in the foil bag. If the Schaub closure 2 is a conventional design, the increased internal pressure causes liquid to escape between the spout and the screw cap 5. The solution according to the invention provides a remedy here. In the figure 2, a first embodiment of the subject invention is now shown. The screw cap is shown with a total of 1. This is understood on the one hand a screw cap 5 and on the other hand, a lower part, which consists of a tubular, cylindrical spout 3, at the lower edge in one piece a radially projecting flange 4 is formed. On the outside of the tubular spout 3, an external thread 6 is formed. Above the external thread 6, a thread-free section on the spout 3 can be seen. The thread-free portion 7 is preferably at least as long as the axially extending portion 8, in which the external thread 6 is mounted.
Die Kappe 5 weist im Wesentlichen den generellen Aufbau von Schraubkappen auf. Sie besitzt eine Deckfläche 50 an der eine Mantelwand 51 nach unten gezogen anschliesst. Die Mantelwand 51 ist im Wesentlichen zylindrisch ausgestaltet. Ungewöhnlich ist lediglich, dass an der Mantelwand 51, im unteren Bereich, ein Innengewinde 52 vorgesehen ist, welches auf das bereits erwähnte Aussengewinde 6 des Ausgusses 3 passt. Oberhalb des Innengewindes 52 folgt nun ein innengewindefreier Bereich 53, der in etwa gleich gross ist, wie der gewindefreie Abschnitt 7 des Ausgusses 3. Im Eckbereich zwischen der Deckfläche 50 und der Mantelwand 51 sind hier umlaufende Dichtwulste 54 vorhanden. Diese Dichtwulste 54 bilden im geschlossenen Zustand des Verschlusses eine statische Dichtung die auch hohen Innendruckbelastungen stand hält. The cap 5 essentially has the general structure of screw caps. It has a top surface 50 on which a shell wall 51 is pulled down. The jacket wall 51 is designed substantially cylindrical. Unusually, only that on the jacket wall 51, in the lower region, an internal thread 52 is provided, which fits on the already mentioned external thread 6 of the spout 3. Above the internal thread 52, an internal thread-free region 53, which is approximately the same size as the unthreaded section 7 of the spout 3, follows. In the corner region between the top surface 50 and the jacket wall 51 circumferential sealing beads 54 are present here. These sealing beads 54 form a static seal in the closed state of the closure which also withstands high internal pressure loads.
Auf der Innenfläche der Mantelwand 51 der Kappe 5 ist eine Gleitdichtung 10 angeformt. Diese Gleitdichtung 10 liegt mit einem vorgegebenen Andruck an der Aussenseite des Ausgusses 3 an . On the inner surface of the jacket wall 51 of the cap 5, a sliding seal 10 is formed. This sliding seal 10 is applied with a predetermined pressure on the outside of the spout 3.
Im hier dargestellten Beispiel der Figur 2 ist die Schraubkappe 5 bereits ein Stück weit aufgeschraubt. Wäre die Schraubkappe 5 in der vollständig festgeschraubten Position gezeigt, so würden die Dichtwulste 54 auf den oberen Rand des Ausgusses 3 aufliegen und die Gleitdichtung 10 würde knapp oberhalb des Bereiches 8 des Aussengewindes 6 am Ausguss 3 anliegen. Bei dieser Anordnung lässt sich nun die Kappe soweit aufschrauben, dass das Aussengewinde 6 des Ausgusses 3 mit dem Innengewinde 52 der Kappe 5 gerade nicht mehr im Eingriff steht und die Gleitdichtung 10 gerade noch an Aussenfläche des Ausgusses 3 anliegt. In the example of Figure 2 shown here, the screw 5 is already screwed a piece. If the screw cap 5 were shown in the fully screwed-on position, the sealing beads 54 would rest on the upper edge of the spout 3 and the sliding seal 10 would abut the spout 3 just above the region 8 of the external thread 6. In this arrangement, the cap can now be unscrewed so far that the external thread 6 of the spout 3 with the internal thread 52 of the cap 5 is no longer engaged and the sliding seal 10 just rests against the outer surface of the spout 3.
Die hier gewählte Form der Gleitdichtung 10 ist eine mögliche Ausgestaltungsform unter vielen. Wesentlich ist nur, dass die Gleitdichtung unter einer gewissen Verformungskraft anliegt. Der Ausguss 3 muss zur Entformung einen gewissen Anzug haben, so dass der Innendurchmesser am oberen Rand geringfügig kleiner ist als der Innendurchmesser im Bereich des Flansches 4. Zudem nimmt aber auch die Wandstärke des Ausgusses 3 vom Bereich des Flansches zum oberen Rand geringfügig ab, so dass insgesamt der Ausguss 3 im gewindefreien Abschnitt 7 leicht konisch verläuft und die Gleitdichtung 10 muss dieser Konizität folgen können und auch im obersten Bereich noch mit einer gewissen Andruckkraft anliegen. Da das Aufsetzen der Schraubkappe problematisch ist, wenn die Gleitdichtung zu stark nach innen ragt, kann es auch sinnvoll sein, statt der hier dargestellten Ausführungsform, bei der die Gleitdichtung die Gestalt einer umlaufenden nach unten, d.h. mit seiner biegsamen Spitze zum Flansch hin gerichteten Schürze sein. Alternativ kann man die Gleitdichtung auch feiner gestalten, als sogenannte Dichtlippe, die an sich weniger Kraft aufzunehmen vermag. In diesem Fall wird man dann bevorzugterweise mehrere solcher umlaufenden Dichtlippen vorsehen. Diese Dichtlippen können beispielsweise praktisch senkrecht von der Mantelwandinnenseite abstehen, und beim Aufsetzen werden diese automatisch nach oben umgewölbt. Dies hat den grossen Vorteil, dass der Innendruck, der auf die Dichtlippen wirkt, die Dichtlippe verstärkt an den Ausguss drückt. Zudem wirken die mehreren Dichtlippen praktisch auch noch gleich einer Labyrinthdichtung. Eine solche, hier nicht dargestellte Lösung, vermag daher trotz der Feinheit dieser Dichtlippen, hohe Innendrücke zurückzuhalten. Im Prinzip ist das Ausstossen einer solchen Schraubkappe aus der Spritzgussform problematisch. Jedoch ist die Technik längst bekannt, dass man bei solchen Schraubkappen die Kappe erst gesamthaft aus der Form nimmt und danach den ins Innere ragende Kern herauszieht, wobei die Mantelwand 51 nun nach aussen federn kann, so dass sowohl das Innengewinde 52 als auch die Gleitdichtung 10, ohne Schaden zu nehmen, beim Herausziehen des Kerns verbleiben. In den Figuren 3 - 6 ist wiederum ein Schraubverschluss 2 auf einer Weichverpackung 1 dargestellt. Der Ausguss 3 und dessen Flansch 4 ist mit Ausnahme eines Innengewindes 22 unverändert. Im Ausguss 3 ist das bereits erwähnte Schneidelement 20 schraubbeweglich gelagert. Ein Mitnehmer 23, auf der Innenfläche des Schneidelementes, dient als Anschlag für einen zweiten Mitnehmer 24 der senkrecht von der Deckfläche 50 der Kappe nach unten ragt. Beim Aufdrehen der Schraubkappe 5 wird das Schneidelement 20 mit einem Aussengewinde 25, welches im Innengewinde 22 des Ausgusses 3 läuft nach unten bewegt und schneidet dabei mittels dem mindestens einen Schneidzahn 21 die Folie F auf. Auch bei dieser Version ist wiederum, gleich wie zuvor, anhand der Figur 2 beschrieben, eine Gleitdichtung 10 vorhanden, die deutlich in der Figur 6 ersichtlich ist. Insbesondere bei dieser Ausführungsform ist klar ersichtlich, dass eine Dichtung auf der Innenseite des Ausgusses hier nicht möglich ist. Die bereits beschriebene, erfindungsgemässe Lösung erlaubt jedoch, praktisch unverändert, auch bei dieser Version eines Schraubverschlusses eingesetzt werden zu können . Bei dieser Version, genau gleich wie bei der Version gemäss der Figur 2, kann die Schraubkappe zusätzlich mit einem Garantieband 40 versehen sein, das formschlüssig hinter einem umlaufenden Kragen 30 am Ausguss 3 unterhalb des Aussengewindes angebracht sein kann. Beim Abschrauben wird das Garantieband 40, welches mittels Sollbruchstellenbrücken 4 am unteren Rand 55 der Schraubkappe 5 angeformt ist, abgerissen und verbleibt unterhalb des erwähnten Kragens 30 hängen. Diese Situation ist in der Figur 2 rechts dargestellt, während auf der linken Seite ein Garantieband 40, welches zwar ebenfalls den Kragen 30 hintergreift, dargestellt ist, doch dieses Garantieband wird beispielsweise mittels einer Abreisslasche entfernt, wobei wiederum die Sollbruchstellenbrücken, welche das Garantieband mit der Schraubkappe verbinden, zerstört. In der Zeichnung sind die Sollbruchstellenbrücken mit 41 bezeichnet. DieThe shape of the sliding seal 10 chosen here is one possible embodiment among many. It is only important that the sliding seal is under a certain deformation force. The spout 3 must have a certain suit for demolding, so that the inner diameter at the upper edge is slightly smaller than the inner diameter in the region of the flange 4. In addition, but also decreases the wall thickness of the spout 3 from the region of the flange to the upper edge slightly, so that a total of the spout 3 in the unthreaded portion 7 slightly conical runs and the sliding seal 10 must be able to follow this conicity and still rest in the uppermost area with a certain pressure. Since the placement of the screw is problematic when the sliding seal projects too much inward, it may also be useful, instead of the embodiment shown here, in which the sliding seal in the form of a circumferential downwards, ie with its flexible tip to the flange directed apron be. Alternatively, you can also make the sliding seal finer, as a so-called sealing lip, which is able to absorb less force in itself. In this case, it will then be preferable to provide several such circumferential sealing lips. These sealing lips can, for example, protrude practically perpendicularly from the casing wall inside, and when placed these are automatically arched upwards. This has the great advantage that the internal pressure acting on the sealing lips, the sealing lip presses reinforced to the spout. In addition, the multiple sealing lips practically also act like a labyrinth seal. Such a solution, not shown here, therefore, despite the fineness of these sealing lips, can withhold high internal pressures. In principle is the ejection of such a screw cap from the injection mold problematic. However, the technique has long been known that in such screw caps, the cap is completely removed from the mold and then pulls out the core protruding into the interior, wherein the jacket wall 51 can now spring outwards, so that both the internal thread 52 and the sliding seal 10th , without being damaged, remain when pulling out the core. In FIGS. 3 to 6, a screw cap 2 is again shown on a soft packaging 1. The spout 3 and its flange 4 is unchanged with the exception of an internal thread 22. In the spout 3, the above-mentioned cutting element 20 is mounted for screwing. A driver 23, on the inner surface of the cutting element, serves as a stop for a second driver 24 which projects vertically from the top surface 50 of the cap down. When unscrewing the screw cap 5, the cutting element 20 is moved with an external thread 25, which runs in the internal thread 22 of the spout 3 down and thereby cuts by means of the at least one cutting tooth 21, the film F. Also in this version, in turn, same as before, described with reference to Figure 2, a sliding seal 10 is present, which is clearly visible in the figure 6. In particular, in this embodiment, it is clear that a seal on the inside of the spout is not possible here. The already described inventive solution However, practically unchanged, it can also be used with this version of a screw cap. In this version, exactly the same as in the version according to FIG. 2, the screw cap can additionally be provided with a guarantee strip 40, which can be mounted in a form-fitting manner behind a peripheral collar 30 on the spout 3 below the external thread. When unscrewing the guarantee strip 40, which is formed by means of predetermined breaking point bridges 4 at the lower edge 55 of the screw cap 5, demolished and remains below the mentioned collar 30 hang. This situation is shown on the right in FIG. 2, while on the left side a guarantee strip 40, which likewise engages behind the collar 30, is shown, but this guarantee strip is removed, for example, by means of a tear-off tab, again with the predetermined breaking point bridges which connect the guarantee band to the guarantee band Connect screw cap, destroyed. In the drawing, the predetermined breaking point bridges are designated 41. The
Sollbruchstellenbrücken sind jedoch nur in der durchtrennten Form ersichtlich, einerseits als Resten am Garantieband 40 und andererseits am unteren Rand 54 der Schraubkappe 5. Prinzipiell lässt sich die erfindungsgemässe Lösung auch realisieren, indem man die Gleitdichtung statt an der Mantelwand 51 der Kappe 5 an der Aussenseite des Ausgusses anbringt. In diesem Fall kommen zwei Varianten in Frage, nämlich, entweder die Gleitdichtung direkt oberhalb des Gewindes anzubringen oder im Bereich des oberen Randes des Ausgusses 3. Bei der ersten Variante muss die Gleitdichtung dann relativ lang gestaltet sein, um über die Unebenheiten des Gewindes hinweg dichten zu können. Bei der zweiten Variante kann die Gleitringdichtung in der radialen Erstreckung kürzer sein und folglich kommen hier auch mehrere Dichtlippen in Frage, während bei der ersten Version vorzugsweise eher schürzenartige Gleitringdichtungen sinnvoll sind . However, predetermined breaking point bridges can only be seen in the severed shape, on the one hand as remnants on the guarantee strip 40 and on the other hand on the lower edge 54 of the screw cap 5. In principle, the solution according to the invention can also be realized by replacing the sliding seal on the outer wall 51 of the cap 5 the spout install. In this case, two variants come into question, namely to install either the sliding seal directly above the thread or in the region of the upper edge of the spout 3. In the first variant, the sliding seal must then be designed to be relatively long to seal over the unevenness of the thread to be able to. In the second variant, the mechanical seal can be shorter in the radial extent and consequently also here several sealing lips come into question, while in the first version preferably apron-like mechanical seals are useful.
Bezugs zeichenliste Reference sign list
1 Weichverpackung bzw. Folienbeutel1 soft packaging or foil bag
2 Schraubverschluss 2 screw cap
3 Ausguss  3 sink
4 Flansch  4 flange
5 Kappe/Schraubkappe  5 cap / screw cap
6 Aussengewinde  6 external thread
7 gewindefreier Wandbereich  7 thread-free wall area
8 Abschnitt mit Gewinde  8 threaded section
10 Gleitdichtung 10 sliding seal
20 Schneidelement  20 cutting element
21 Schneidzahn  21 cutting tooth
22 Innengewinde  22 internal thread
23 Mitnehmer  23 drivers
24 zweiter Mitnehmer  24 second driver
25 Aussengewinde am Schneidelement 30 Kragen  25 external thread on the cutting element 30 collar
40 Garantieband  40 guarantee band
41 Sollbruchstellenbrücken  41 predetermined breaking point bridges
50 Deckfläche  50 deck area
51 Mantelwand  51 casing wall
52 Innengewinde  52 female thread
54 Dichtwulst  54 sealing bead
55 unterer Rand der Schraubkappe  55 lower edge of the screw cap
P Kraft P force

Claims

Patentansprüche claims
Schraubverschluss (2) für ein Behältnis, umfassend einen Ausguss (3) mit Aussengewinde (6), sowie einer auf den Ausguss (3) aufschraubbaren Kappe (5) mit einer Mantelwand (51) mit Innengewinde (52) und einer Deckfläche (50), wobei über dem Aussengewinde (6) am Ausguss (3) ein gewindefreier Wandbereich (7) vorhanden ist, der als Gleitfläche für eine an der Innenseite der Mantelwand (51) der Kappe (5) angeordneten umlaufenden Gleitdichtung (10) dient, wobei die Gleitdichtung (10) oberhalb des Innengewindes (52) an der Innenseite der Mantelwand (51) angeformt ist, dadurch gekennzeichnet, dass das Behältnis ein Folienbeutel (1) ist und der Ausguss (3) mit dem Aussengwinde (6) aus einem rohrförmigen Teil mit endständigem Befestigungsflansch (4) besteht der auf den Folienbeutel (1) angebracht ist und dass die Gleitfläche und die Gleitdichtung solange in dichtender Verbindung stehen bis das Innengewinde (52) der Kappe (5) und das Aussengewinde (6) des Ausgusses (3) nicht mehr im Eingriff stehen und die bei der Abschraubbewegung der Kappe vom Benutzer auf den Folienbeutel ausgeübte Verformkraft entfällt. Screw closure (2) for a container, comprising a spout (3) with an external thread (6), and a cap (5) which can be screwed onto the spout (3) and has a jacket wall (51) with an internal thread (52) and a cover surface (50). , wherein above the external thread (6) on the spout (3) a thread-free wall portion (7) is provided, which serves as a sliding surface for a on the inside of the jacket wall (51) of the cap (5) arranged circumferential sliding seal (10), wherein the Sliding seal (10) above the internal thread (52) on the inside of the jacket wall (51) is formed, characterized in that the container is a foil bag (1) and the spout (3) with the outside winch (6) from a tubular part with terminal mounting flange (4) which is mounted on the foil bag (1) and that the sliding surface and the sliding seal so long in sealing connection until the internal thread (52) of the cap (5) and the external thread (6) of the spout (3) not more in one handle and exerted on the film bag by the user during the screwing off the cap deformation force is eliminated.
Schraubverschluss für Weichverpackungen, nämlich Folienbeutel nach Anspruch 1, dadurch gekennzeichnet, dass über dem Innengewinde (52) der Kappe (5) ein gewindefreier Wandbereich vorhanden ist, der als Gleitlager für eine an der Aussenseite des Ausgusses oberhalb und distanziert zu dessen Aussengewinde angeordnete umlaufende Gleitdichtung dient. Screw cap for soft packaging, namely film bag according to claim 1, characterized in that above the internal thread (52) of the cap (5) a thread-free wall portion is present, which serves as a sliding bearing for a on the outside of the spout above and distant from the external thread arranged circumferential sliding seal.
3. Schraubverschluss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gleitdichtung eine L-Dichtung in Form einer Schürze ist. 3. Screw cap according to claim 1 or 2, characterized in that the sliding seal is an L-seal in the form of a skirt.
4. Schraubverschluss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gleitdichtung (10) in aufgesetztem Zustand der Schraubkappe (5) zum unteren Rand (55) der Mantelwand (51) hin geneigt gerichtet ist. 4. Screw cap according to claim 1 or 2, characterized in that the sliding seal (10) in the attached state of the screw cap (5) to the lower edge (55) of the jacket wall (51) is inclined towards.
5. Schraubverschluss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Gleitdichtung (10) in aufgesetztem Zustand in Richtung zur Deckfläche (50) der Kappe (5) hin geneigt gerichtet ist. 5. Screw cap according to claim 1 or 2, characterized in that the sliding seal (10) is directed in the mounted state in the direction of the top surface (50) of the cap (5) inclined towards.
6. Schraubverschluss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass auf der Innenseite des Ausgusses6. Screw cap according to claim 1 or 2, characterized in that on the inside of the spout
(3) zusätzlich ein Innengewinde (22) angeordnet ist, in dem ein ringförmiges Schneidelement (20) mit Aussengewinde(3) additionally an internal thread (22) is arranged, in which an annular cutting element (20) with external thread
(25) transachsial mit Mitnehmer (23) beweglich angeordnet ist, welches über zweite Mitnehmer (24) an der Deckfläche(25) transaxially with driver (23) is movably arranged, which via second driver (24) on the top surface
(50) der Kappe (5) bewegbar ist und mittels der Schraubbewegung der Kappe (5) das Schneidelement (20), welches an der unteren Kante zur Folie des Folienbeutels hin gerichtet, mindestens einen Schneidzahn (21) aufweist, mittels dem die Folie des Folienbeutels aufschneidbar ist. (50) of the cap (5) is movable and by means of the screwing movement of the cap (5), the cutting element (20), which, directed at the lower edge towards the film of the film bag, has at least one cutting tooth (21) by means of which the film of the film bag can be cut open.
Schraubverschluss nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Eckbereich zwischen MantelwandScrew cap according to claim 1 or 2, characterized in that in the corner region between the shell wall
(51) und Deckfläche (50) der Kappe (5) eine zusätzliche Dichtung in Form mindestens einer Dichtwulst (54) vorhanden ist, die im geschlossenen Zustand des Schraubverschlusses (2) an die Stirnfläche des Ausgusses(51) and top surface (50) of the cap (5) an additional seal in the form of at least one sealing bead (54) is present, in the closed state of the screw cap (2) to the end face of the spout
(3) dichtend anliegt. (3) sealingly.
Schraubverschluss nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die radiale Erstreckung der Gleitdichtung (10) grösser ist als der Abstand von der Innenseite der Mantelwand (51) der Kappe (5) zur Aussenseite des Ausgusses (3) . Screw closure according to one of claims 1 or 2, characterized in that the radial extent of the sliding seal (10) is greater than the distance from the inside of the jacket wall (51) of the cap (5) to the outside of the spout (3).
EP11709055.5A 2010-05-04 2011-03-04 Packaging with threaded closure Active EP2566768B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010028522A DE102010028522A1 (en) 2010-05-04 2010-05-04 Screw cap for soft packaging
PCT/EP2011/053338 WO2011138062A1 (en) 2010-05-04 2011-03-04 Screw closure for soft packagings

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EP2566768A1 true EP2566768A1 (en) 2013-03-13
EP2566768B1 EP2566768B1 (en) 2016-09-21

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EP (1) EP2566768B1 (en)
JP (1) JP2013525223A (en)
CN (1) CN102869580B (en)
BR (1) BR112012027867A2 (en)
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US10676261B2 (en) 2017-09-07 2020-06-09 Silgan White Cap LLC Closure assembly
US11718457B2 (en) 2017-09-07 2023-08-08 Silgan White Cap LLC Closure assembly

Also Published As

Publication number Publication date
RU2012151561A (en) 2014-06-20
BR112012027867A2 (en) 2016-08-09
EP2566768B1 (en) 2016-09-21
CN102869580A (en) 2013-01-09
WO2011138062A1 (en) 2011-11-10
JP2013525223A (en) 2013-06-20
DE102010028522A1 (en) 2011-11-10
US20130058595A1 (en) 2013-03-07
CN102869580B (en) 2015-07-22

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