EP0215202A1 - Method for producing a synthetic closure cap for bottle-like containers - Google Patents

Method for producing a synthetic closure cap for bottle-like containers Download PDF

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Publication number
EP0215202A1
EP0215202A1 EP86108384A EP86108384A EP0215202A1 EP 0215202 A1 EP0215202 A1 EP 0215202A1 EP 86108384 A EP86108384 A EP 86108384A EP 86108384 A EP86108384 A EP 86108384A EP 0215202 A1 EP0215202 A1 EP 0215202A1
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EP
European Patent Office
Prior art keywords
cap
sealing washer
bottle
wall ring
wall
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
EP86108384A
Other languages
German (de)
French (fr)
Other versions
EP0215202B1 (en
Inventor
Hans Heinlein
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0215202A1 publication Critical patent/EP0215202A1/en
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Publication of EP0215202B1 publication Critical patent/EP0215202B1/en
Expired legal-status Critical Current

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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
    • B65D41/02—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
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs

Definitions

  • the invention relates to a closure cap made of plastic for bottle-like containers, in particular screw cap, with a sealing washer arranged therein.
  • the sealing washer can consist of rubber, cork, aluminum or plastic. Drip devices, pourers or the like can be arranged in the bottle mouth of the bottle-like container.
  • the contents of the bottle-like container can attack the adhesive layer or the adhesive, so that the adhesive connection is also loosened here, which also reduces the sealing effect or completely eliminates it.
  • the invention is therefore based on the object of designing a closure cap of the type described at the outset in such a way that the sealing disk arranged therein is held captive mechanically without an adhesive connection and is secure Sealing to the bottle mouth of an associated container is effected in a simple manner.
  • a wall ring is provided on the inner wall of the cap between the screw thread and the cap base, the diameter of which is the same or slightly larger than the diameter of the sealing washer and that is arranged at intervals by a stamp-like tool, lobe-like deformation points of the wall ring the sealing washer is held captive.
  • this cap can also be sterilized with this, even after being screwed onto a bottle-like container, without the connection between the sealing washer and the cap being impaired.
  • the type of filling material also has no influence on the firm connection between the sealing cap and the sealing washer.
  • the radial height of the wall ring is equal to or less than the radial height of the threads of the screw thread.
  • a sealing washer 6 is fixed by projections 5 of a wall ring 4.
  • the inserted sealing washer 6 is held in place by means of a suitable tool (not shown) that the projections 5 are pressed out from the wall ring 4 at appropriate distances.
  • the projections 5 With the help of the projections 5, the inserted sealing washer is captively attached and pressed onto the cap base 2.
  • the diameter section according to FIG. 2 through an exemplary embodiment shows the screw cap 1 without an inserted sealing washer.
  • the screw thread 3 serves to connect the screw cap 1 to a bottle-like container (not shown).
  • the wall ring 4 arranged on the inner wall 8 of the cap, which is preferably formed in one piece with the cap 1, has a radial height that is equal to or less than the radial height of the threads of the thread 3.
  • Fig. 3 the screw cap 1 is shown with the inserted and clamped sealing washer 6 in the same diameter section as in Fig.2.
  • the design is such that the projections 5 have a smaller radial distance than the outer diameter of the bottle mouth of an associated container. This ensures that only the sealing washer 6 comes to rest on the container mouth and provides a secure seal when the screw cap 1 is screwed on.
  • the sealing disk 6 can be made of rubber, cork, aluminum or plastic or the like and may also have a central (not shown) projection which engages in the mouth-like opening of the bottle-like container or a spout or a drip device in the mouth of the bottle-like container.
  • the invention enables the use of sealing disks 6 with standardized dimensions in likewise standardized screw caps 1.
  • the screw thread 3 can have one or more gears.
  • the radial height of the wall ring 4 is less than or equal to the radial height of the ribs of the thread 3.
  • the screw cap 1 can have gripping ribs known per se (not shown).

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

Abstract

1. A method of producing a closure cap from synthetic plastics material and intended for bottle-like containers, in particular a screw cap, in which there is disposed a sealing washer which is held captively secured by projections, characterised in that the sealing washer is inserted into the interior of a wall ring which projects slightly beyond the adjacent part of the inner wall of the container, the free bottom edge of the wall ring being deformed by a die-like tool to form protruding projections.

Description

Die Erfindung betrifft eine Verschlußkappe aus Kunststoff für flaschenartige Behälter, insbesondere Schraubkappe, mit einer darin angeordneten Dichtscheibe.The invention relates to a closure cap made of plastic for bottle-like containers, in particular screw cap, with a sealing washer arranged therein.

Bei vielen Verwendungszwecken ist es notwendig, in der Verschlußkappe für flaschenartige Behälter, in Abhängigkeit von dem Inhalt des Behälters eine Dichtscheibe vorzusehen, um den Flaschenmund bei festgeschraubter Verschlußkappe sicher abzudichten. Die Dichtscheibe kann dabei aus Gummi, Kork, Aluminium oder Kunststoff bestehen. Im Flaschenmund des flaschenartigen Behälters können Tropfvorrichtungen, Ausgießer oder dergl. angeordnet sein.For many uses, it is necessary to provide a sealing washer in the cap for bottle-like containers, depending on the contents of the container, in order to securely seal the bottle mouth when the cap is screwed on. The sealing washer can consist of rubber, cork, aluminum or plastic. Drip devices, pourers or the like can be arranged in the bottle mouth of the bottle-like container.

Bei bekannten Verschlußkappen dieser Art ist die Dichtscheibe an der Innenfläche der Kappendeckfläche angeklebt. Bei diesen Verschlußkappen mit angeklebter Dichtscheibe besteht die Gefahr, daß bei nachträglicher Sterilisierung sich die Verklebung wieder löst, so daß die Dichtungswirkung verloren geht.In known caps of this type, the sealing washer is glued to the inner surface of the cap top surface. With these sealing caps with glued-on sealing washer there is a risk that the adhesive will come loose again after subsequent sterilization, so that the sealing effect is lost.

Bei anderen Anwendungsfällen kann durch den Inhalt des flaschenartigen Behälters die Klebeschicht bzw. das Klebemittel angegriffen werden, so daß auch hier die Klebverbindung sich löst, was ebenfalls die Dichtwirkung herabsetzt oder völlig in Fortfall bringt.In other applications, the contents of the bottle-like container can attack the adhesive layer or the adhesive, so that the adhesive connection is also loosened here, which also reduces the sealing effect or completely eliminates it.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Verschlußkappe der eingangs erläuterten Art dahingehend auszubilden, daß die darin angeordnete Dichtscheibe ohne Klebverbindung mechanisch unverlierbar festgehalten ist und eine sichere Abdichtung zum Flaschenmund eines zugehörigen Behälters in einfacher Weise bewirkt ist.The invention is therefore based on the object of designing a closure cap of the type described at the outset in such a way that the sealing disk arranged therein is held captive mechanically without an adhesive connection and is secure Sealing to the bottle mouth of an associated container is effected in a simple manner.

Diese Aufgabe wird nach der Erfindung im wesentlichen dadurch gelöst, daß an der Innenwand der Kappe zwischen Schraubgewinde und Kappenboden ein Wandring vorgesehen sit, dessen Durchmesser gleich oder geringfügig größer als der Durchmesser der Dichtscheibe ist und daß durch ein stempelartiges Werkzeug erzeugte, in Abständen angeordnete, lappenartige Deformationsstellen des Wandringes die Dichtscheibe unverlierbar festgehalten ist.This object is essentially achieved according to the invention in that a wall ring is provided on the inner wall of the cap between the screw thread and the cap base, the diameter of which is the same or slightly larger than the diameter of the sealing washer and that is arranged at intervals by a stamp-like tool, lobe-like deformation points of the wall ring the sealing washer is held captive.

Durch diese rein mechanische Verbindung der Dichtscheibe mit der Verschlußkappe kann diese Verschlußkappe, auch nach dem Aufschrauben auf einen flaschenartigen Behälter ohne weiteres mit diesem zusammen sterilisiert werden, ohne daß die Verbindung zwischen Dichtscheibe und Verschlußkappe beeinträchtigt wird. Auch die Art des Füllgutes ist ohne Einfluß auf die feste Verbindung zwischen Verschlußkappe und Dichtscheibe.Through this purely mechanical connection of the sealing washer to the cap, this cap can also be sterilized with this, even after being screwed onto a bottle-like container, without the connection between the sealing washer and the cap being impaired. The type of filling material also has no influence on the firm connection between the sealing cap and the sealing washer.

Bei einem bevorzugten Ausführungsbeispiel der Erfindung ist die radiale Höhe des Wandringes gleich oder kleiner als die radiale Höhe der Gänge des Schraubgewindes.In a preferred embodiment of the invention, the radial height of the wall ring is equal to or less than the radial height of the threads of the screw thread.

Einzelheiten, Vorteile und Merkmale der Erfindung werden anhand der Zeichnungen näher erläutert. Dabei zeigt:

  • Fig. l eine erfindungsgemäße Schraubkappe mit befestigter Dichtscheibe von unten gesehen,
  • Fig. 2 einen Durchmesserschnitt durch eine erfindungsgemäße Verschlußkappe ohne Dichtscheibe, und
  • Fig. 3 einen Schnitt gemäß Fig.2 mit eingesetzter und befestigter Dichtscheibe.
Details, advantages and features of the invention are explained in more detail with reference to the drawings. It shows:
  • L seen a screw cap according to the invention with attached sealing washer from below,
  • Fig. 2 shows a diameter section through a sealing cap according to the invention without a sealing washer, and
  • 3 shows a section according to FIG. 2 with the sealing disk inserted and fastened.

Bei der Untersicht nach Fig.l eines Ausführungsbeispieles ist ersichtlich, daß in einer Schraubkappe 1 mit Gewinde 3 eine Dichtscheibe 6 durch Vorsprünge 5 eines Wandringes 4 befestigt ist. Die eingelegte Dichtscheibe 6 wird dadurch festgehalten, daß mit Hilfe eines geeigneten (nicht dargestellten) Werkzeuges vom Wandring 4 die Vorsprünge 5 mit entsprechenden Abstanden herausgedrückt werden. Mit Hilfe der Vorsprünge 5 wird die eingelegte Dichtscheibe unverlierbar befestigt und am Kappenboden 2 angepreßt.In the bottom view of Fig.l of an embodiment it can be seen that in a screw cap 1 with thread 3, a sealing washer 6 is fixed by projections 5 of a wall ring 4. The inserted sealing washer 6 is held in place by means of a suitable tool (not shown) that the projections 5 are pressed out from the wall ring 4 at appropriate distances. With the help of the projections 5, the inserted sealing washer is captively attached and pressed onto the cap base 2.

Der Durchmesserschnitt gemäß Fig.2 durch ein Ausführungsbeispiel zeigt die Schraubkappe 1 ohne eingelegte Dichtscheibe. Das Schraubgewinde 3 dient zur Verbindung der Schraubkappe 1 mit einem (nicht dargestellten) flaschenartigen Behälter. Der an der Kappeninnenwand 8 angeordnete Wandring 4, der vorzugsweise einstückig mit der Kappe 1 ausgebildet ist, weist eine radiale Höhe auf, die gleich oder kleiner ist als die radiale Höhe der Gänge des Gewindes 3.The diameter section according to FIG. 2 through an exemplary embodiment shows the screw cap 1 without an inserted sealing washer. The screw thread 3 serves to connect the screw cap 1 to a bottle-like container (not shown). The wall ring 4 arranged on the inner wall 8 of the cap, which is preferably formed in one piece with the cap 1, has a radial height that is equal to or less than the radial height of the threads of the thread 3.

In Fig. 3 ist im selben Durchmesserschnitt wie in Fig.2 die Schraubkappe 1 mit eingelegter und festgeklemmter Dichtscheibe 6 dargestellt. Die Ausführung ist dabei derart getroffen, daß die Vorsprünge 5 einen kleineren radialen Abstand aufweisen, als der Außendurchmesser des Flaschenmundes eines zugehörigen Behälters. Dadurch wird sichergestellt, daß ausschließlich die Dichtscheibe 6 auf dem Behältermund zum Anliegen kommt und eine sichere Abdichtung bei aufgeschraubter Schraubkappe 1 bewirkt.In Fig. 3 the screw cap 1 is shown with the inserted and clamped sealing washer 6 in the same diameter section as in Fig.2. The design is such that the projections 5 have a smaller radial distance than the outer diameter of the bottle mouth of an associated container. This ensures that only the sealing washer 6 comes to rest on the container mouth and provides a secure seal when the screw cap 1 is screwed on.

Die Dichtscheibe 6 kann dabei aus Gummi, Kork, Aluminium oder Kunststoff oder dergl. bestehen und eventuell auch einen zentrischen (nicht dargestellten) Vorsprung aufweisen, der in die mundartige Öffnung des flaschenartigen Behälters oder eines Ausgießers oder einer Tropfvorrichtung im Mund des flaschenartigen Behälters eingreift.The sealing disk 6 can be made of rubber, cork, aluminum or plastic or the like and may also have a central (not shown) projection which engages in the mouth-like opening of the bottle-like container or a spout or a drip device in the mouth of the bottle-like container.

Die Erfindung ermöglicht die Verwendung von Dichtscheiben 6 mit genormten Abmessungen in ebenfalls genormten Schraubkappen 1.The invention enables the use of sealing disks 6 with standardized dimensions in likewise standardized screw caps 1.

Das Schraubgewinde 3 kann einen Gang oder mehrere Gänge aufweisen. Die radiale Höhe des Wandringes 4 ist kleiner höchstens gleich der radialen Höhe der Rippen des Gewindes 3.The screw thread 3 can have one or more gears. The radial height of the wall ring 4 is less than or equal to the radial height of the ribs of the thread 3.

Die Schraubkappe 1 kann ansich bekannte (nicht dargestellte) Greifrippen aufweisen.The screw cap 1 can have gripping ribs known per se (not shown).

Die Erfindung ist also nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt, sie umfaßt auch alle fachmännischen Abwandlungen sowie Teil- und Unterkombinationen der beschriebenen und/oder dargestellten Merkmale und Maßnahmen.The invention is therefore not limited to the exemplary embodiments shown and described, it also includes all technical modifications and partial and sub-combinations of the described and / or illustrated features and measures.

BezugszeichenlisteReference symbol list

1 VerschluBkappe 41 2 Kappenboden 42 3 Gewinde 43 4 Wandring 44 5 Vorsprung 45 6 Dichtscheibe 46 7 47 8 Kappen-Innenwand 48 9 49 10 50 11 51 12 52 13 53 14 54 15 55 16 56 17 57 18 58 19 59 20 60 21 61 22 62 23 63 24 64 25 65 26 66 27 67 28 68 29 69 30 70 31 71 32 72 33 73 34 74 35 75 36 76 37 77 38 78 39 79 40 801 closure cap 4 1 2 cap base 42 3 thread 43 4 wall ring 44 5 projection 45 6 sealing washer 46 7 47 8 cap inner wall 48 9 49 10 50 11 51 12 52 13 53 14 54 15 55 16 56 17 57 18 58 19 59 20 60 21 61 22 62 23 63 24 64 25 65 26 66 27 67 28 68 29 69 30 70 31 71 32 72 33 73 34 74 35 75 36 76 37 77 38 78 39 79 40 80

Claims (2)

1. Verschlußkappe aus Kunststoff für flaschenartige Behälter, insbesondere Schraubkappe, mit einer darin angeordneten Dichtscheibe, dadurch gekennzeichnet, daß an der Innenwand (8) der Kappe (1) zwischen Schraubgewinde (3) und Kappenboden (2) ein Wandring (4) vorgesehen ist, dessen Durchmesser gleich oder geringfügig größer als der Durchmesser der Dichtscheibe (6) ist, und daß durch ein stempelartiges Werkzeug erzeugte, in Abständen angeordnete, lappenartige Deformationsstellen (Vorsprünge 5) des Wandringes (4) die Dichtscheibe (6) unverlierbar festgehalten ist.1. Plastic cap for bottle-like container, in particular screw cap, with a sealing washer arranged therein, characterized in that a wall ring (4) is provided on the inner wall (8) of the cap (1) between the screw thread (3) and the cap base (2) , the diameter of which is the same or slightly larger than the diameter of the sealing washer (6), and that the sealing washer (6) is held captively by a stamp-like tool, arranged at intervals, tab-like deformation points (projections 5) of the wall ring (4). 2. Verschlußkappe nach Anspruch 1, dadurch gekennzeichnet, daß die radiale Höhe des Wandringes (4) gleich oder kleiner ist als die radiale Höhe der Gänge des Schraubgewindes (3).2. Cap according to claim 1, characterized in that the radial height of the wall ring (4) is equal to or less than the radial height of the threads of the screw thread (3).
EP19860108384 1985-08-24 1986-06-19 Method for producing a synthetic closure cap for bottle-like containers Expired EP0215202B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853530367 DE3530367A1 (en) 1985-08-24 1985-08-24 PLASTIC CAP FOR BOTTLE-LIKE CONTAINERS
DE3530367 1985-08-24

Publications (2)

Publication Number Publication Date
EP0215202A1 true EP0215202A1 (en) 1987-03-25
EP0215202B1 EP0215202B1 (en) 1989-09-27

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Family Applications (1)

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EP19860108384 Expired EP0215202B1 (en) 1985-08-24 1986-06-19 Method for producing a synthetic closure cap for bottle-like containers

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EP (1) EP0215202B1 (en)
DE (1) DE3530367A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275623A1 (en) * 1986-12-19 1988-07-27 Owens-Illinois Closure Inc., Lined closure made by the unscrewing process
EP0983945A1 (en) * 1998-09-03 2000-03-08 Crown Cork & Seal Technologies Corporation Method for producing a closure cap and closure cap
US7621411B2 (en) 2000-02-07 2009-11-24 Locite (R&D) Limited Applicator, applicator cap and a container having an applicator cap

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133809A1 (en) * 2001-07-11 2003-01-23 Bericap Gmbh & Co Kg Spout for drinks carton comprises tube with peripheral flange, tags which project inwards at angle holding spout in position
JP5191147B2 (en) * 2007-03-14 2013-04-24 アイセロ化学株式会社 Synthetic resin plug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR980810A (en) * 1948-12-20 1951-05-18 Bourjois Container closing device
DE1700567U (en) * 1955-04-28 1955-06-16 Fritz Junghans BOTTLE SCREW CAP.
US2904837A (en) * 1956-01-31 1959-09-22 Phoenix Metal Cap Company Inc Force plug for molded articles
US3628704A (en) * 1969-12-10 1971-12-21 Diamond Int Corp Container with venting gasket
FR2340866A1 (en) * 1976-02-11 1977-09-09 Astra Plastique Bottle stopper for liquids under pressure - has separate inner seal held in position by external stopper screwed into place
EP0073448A1 (en) * 1981-08-24 1983-03-09 Tredegar Molded Products Company Closure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR980810A (en) * 1948-12-20 1951-05-18 Bourjois Container closing device
DE1700567U (en) * 1955-04-28 1955-06-16 Fritz Junghans BOTTLE SCREW CAP.
US2904837A (en) * 1956-01-31 1959-09-22 Phoenix Metal Cap Company Inc Force plug for molded articles
US3628704A (en) * 1969-12-10 1971-12-21 Diamond Int Corp Container with venting gasket
FR2340866A1 (en) * 1976-02-11 1977-09-09 Astra Plastique Bottle stopper for liquids under pressure - has separate inner seal held in position by external stopper screwed into place
EP0073448A1 (en) * 1981-08-24 1983-03-09 Tredegar Molded Products Company Closure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275623A1 (en) * 1986-12-19 1988-07-27 Owens-Illinois Closure Inc., Lined closure made by the unscrewing process
EP0983945A1 (en) * 1998-09-03 2000-03-08 Crown Cork & Seal Technologies Corporation Method for producing a closure cap and closure cap
WO2000013983A1 (en) * 1998-09-03 2000-03-16 Crown Cork & Seal Technologies Corporation Method for producing a closing cap and closing cap produced according to said method
US7621411B2 (en) 2000-02-07 2009-11-24 Locite (R&D) Limited Applicator, applicator cap and a container having an applicator cap

Also Published As

Publication number Publication date
DE3530367A1 (en) 1987-02-26
EP0215202B1 (en) 1989-09-27

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