EP0464384A1 - Self venting bottle closure - Google Patents

Self venting bottle closure Download PDF

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Publication number
EP0464384A1
EP0464384A1 EP91109135A EP91109135A EP0464384A1 EP 0464384 A1 EP0464384 A1 EP 0464384A1 EP 91109135 A EP91109135 A EP 91109135A EP 91109135 A EP91109135 A EP 91109135A EP 0464384 A1 EP0464384 A1 EP 0464384A1
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EP
European Patent Office
Prior art keywords
seal
closure cap
mouthpiece
bottle
cover plate
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
EP91109135A
Other languages
German (de)
French (fr)
Other versions
EP0464384B1 (en
Inventor
Alois Dipl.-Ing. Fickler
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.)
Verallia Deutschland AG
Original Assignee
Oberland Glas AG
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Filing date
Publication date
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Application filed by Oberland Glas AG filed Critical Oberland Glas AG
Publication of EP0464384A1 publication Critical patent/EP0464384A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth

Definitions

  • the invention relates to a closure cap for a bottle or a similar hollow container, which consists of a cover plate which overlaps the mouth of the bottle and a collar which is integrally formed thereon and can be locked on the mouthpiece, with a first seal resting on the end face of the mouthpiece and a second seal that can be pressed onto the inner surface of the latter is attached and the closure cap has an elastically deformable zone, through which the cover plate for venting the interior of the bottle is designed to bulge out in the manner of a membrane depending on the pressure prevailing therein.
  • DE-A-29 02 859 discloses a closure arrangement of this type for containers, in particular for bottles.
  • the cap of this bottle closure consists of a plastic, the bending stiffness of which changes as a function of temperature, so that when the temperature rises above room temperature the cover plate can be arched out by the internal pressure of the container rising as a result of the temperature increase.
  • the elastically deformable zone is thus formed by an annular bending zone in the transition area between the collar and the cover plate.
  • a bottle Due to the first seal resting on the end face of the mouthpiece and the second seal resting on the inner surface of the mouth, a bottle can be reliably closed with this cap, but an automatic pressure reduction in the interior of the bottle is only given when the pressure rises due to increased outside temperature. If, on the other hand, a bottle filled with a carbonated beverage and secured with such a closure cap is shaken at room temperature, the internal pressure sometimes rises to a considerable extent due to the carbon dioxide released. However, since the bending zone is not effective in this case, the cover plate is not lifted off either and consequently the internal pressure is not reduced. When the bottle is opened, the beverage can splash out of it, and the bottle can also be destroyed by excessive pressure.
  • a closure cap is made of a soft material, unevenness at the bottle mouth is compensated, but a soft closure cap can be easily turned over so that a tight closure is no longer provided. And in the case of a closure cap made of a hard material, a tight closure can often not be achieved, since the seals do not lie against the mouthpiece to a sufficient extent.
  • the known cap is therefore not practical and can only be used to a limited extent.
  • the object of the invention is therefore to provide a cap of the aforementioned type, which is not only easy and economical to manufacture, but above all ensures automatic ventilation depending on the internal pressure building up in a bottle and regardless of the outside temperature is. Furthermore, it should be achieved that even with different mouth diameters and / or bottle mouths damaged by the filling tube, for example, reliable sealing of the bottle can be achieved, even after venting, and that venting takes place at a selectable limit value.
  • the cap which thus acts as a pressure relief valve, should be able to be designed for different overpressures, depending on the intended use, and it should also be easy to open, and a bottle should be able to be closed repeatedly with this cap without difficulty.
  • the elastically deformable zone of the closure cap is formed by radially outside the first seal in the cover plate on the inside and / or outside thereof preferably circumferential grooves, and in that in the transition area between the collar and the cover plate this is provided next to the elastically deformable zone or at a distance from it a third seal projecting in the direction of the mouthpiece of the bottle.
  • the first seal resting on the end face of the mouthpiece by means of two concentrically arranged sealing lips which are inclined inwardly in the axial direction of the mouthpiece, preferably at an angle a of 10 ° -15 ° to the longitudinal axis of the bottle, and the radially inner sealing lip in To let the axial direction protrude beyond the radially outer sealing lip, the two sealing lips being conically tapered in cross-section in the direction of the mouthpiece and each having an inwardly inclined, preferably arranged in one plane and at an angle ⁇ of 20 ° to 40 °, preferably of 25 °, should have contact surface running to the level of the top cap.
  • the first seal can also be formed by a sealing ring inserted into the sealing cap, and to hold the sealing ring, the cover plate should have a circumferential projection or protruding webs, preferably provided with a convexly curved support surface.
  • the second with the inner surface of the Mouthpiece cooperating seal of the cover plate should also be designed in the form of a sealing lip inclined to the longitudinal axis of the bottle, the inward facing surface of which is concentric with the collar of the closure cap and its facing surface at an angle y of 10 ° to 15 °, preferably at an angle of 12 °, should be designed inclined inwards in the axial direction of the mouthpiece.
  • the third seal of the closure cap by means of a sealing lip which projects in the direction of the mouthpiece of the bottle and which is designed to be approximately trapezoidal in cross section and should have an abutment surface which slopes outward.
  • the elastically deformable zone of the closure cap is to be formed by a circumferential groove, which is worked into the inside of the cover cap and is approximately semicircular and merges into the outer surface of the sealing lip of the third seal.
  • the side of the top cap facing the mouthpiece of the bottle has a symmetrical spherical cap-shaped curvature in the inner region between the second seal and that a retaining ring is formed on the free end of the collar of the closure cap and is formed on the mouthpiece of the bottle .
  • a closure cap according to the invention is formed by incorporating an elastically deformable zone into its cover plate and a third seal being formed in the radially outer region of the cover plate, it is possible for the interior of a bottle equipped with this closure cap to function automatically as a function of the prevailing internal pressure and to vent for a short time regardless of the respective outside temperature and thus to reduce the pressure, so that impairment of the contents and / or destruction of the bottles are reliably avoided.
  • the first seal is pressed against the end face of the mouthpiece by the cover plate returning to the starting position, and the second seal, by means of which dimensional tolerances and damage can also be compensated for, are pressed against the inner jacket surface thereof, a secure closure of the bottle is therefore given, even with repeated venting.
  • the third outer seal also ensures that the cap is only effective as a pressure relief valve at a certain selectable internal pressure. And since the elastic zone can be easily molded into the cover plate during its manufacture, an economical manufacture of the proposed closure cap, which can be used for all bottles or similar hollow containers in circulation and can be processed on conventional closure machines, is also guaranteed.
  • the closure cap shown in FIGS. 1 to 3 and designated 11 consists of a flat cover plate 12 and a collar 13 formed thereon and is screwed onto the mouthpiece 2 of a bottle 1 provided with an external thread 6 in order to close its mouth 5.
  • the collar 13 is provided with an internal thread 14.
  • a collar 15 is attached to the collar 13 which, in the closed state, engages behind a collar 7 formed on the mouthpiece 2.
  • a first seal 21, which interacts with the end face 3 of the mouthpiece 2 is a second seal 31, which can be pressed onto the inner lateral surface 4 of the closure cap 11 made of a plastic material, and a third seal 41, which rests on the outer area of the mouthpiece 2, is integrally formed. Furthermore, the closure cap 11 is provided with an elastically deformable zone 51 arranged between the first seal 21 and the third seal 41, by means of which an automatic and reliable ventilation of the interior 10 of the bottle 1 is accomplished as a function of the internal pressure prevailing therein.
  • the first seal 21 consists of two concentrically arranged sealing lips 22 and 23, which are inclined inwards at an angle a of 20 ° to the longitudinal axis of the bottle 1.
  • the sealing lips 22 and 23, which are conically tapered in cross section, are provided at their ends with contact surfaces 24 and 25 which run in one plane and are inclined at an angle ⁇ of 25 ° to the plane of the cover plate 12. In this way, a secure contact on the end face 3 of the mouthpiece 2 is guaranteed.
  • the second seal 31 is also formed by a sealing lip 32.
  • the inward jacket surface 33 of the sealing lip 32 runs concentrically to the collar 13, the outer jacket surface 34 facing it, on the other hand, is inclined inwardly at an angle y of 12 ° in the axial direction of the mouthpiece 2. This ensures that even with different inside diameters of the mouth 5 of the mouthpiece 2 and / or at z. B. caused by a filler pipe nevertheless a sealing contact of the sealing lip 32 on the inner surface 4 of the mouthpiece 2 is given.
  • the sealing lip 32 is namely pressed against the mouthpiece 4 by the pressure prevailing in the interior 10 of the bottle 1.
  • the third seal 41 also consists of a sealing lip 42, which is approximately trapezoidal in cross section and has an outwardly inclined contact surface 43.
  • the sealing lip 42 interacts with the outer part of the mouthpiece 2 and additionally seals the interior 10 of the bottle 1. Even if the first seal 21 and the second seal 31 no longer lie sealingly against the end face 3 or the inner lateral surface 4 of the mouthpiece 2 due to a slight overpressure in the bottle 1, a tight seal is nevertheless provided.
  • the elastically deformable zone 51 is in the form of a groove in the cover plate 12 52 incorporated.
  • the groove 52 has a semicircular cross section and merges into the outer lateral surface of the outer sealing lip 23 of the first seal 21 and into the inner lateral surface of the sealing lip 42 of the third seal 41.
  • an insert 53 made of an elastically deformable material can also be used in the region of the elastically deformable zone 51.
  • the deformability of the cover plate 12 can be adapted to the particular application of the closure cap 11.
  • the shape and size of the seals 21, 31 and 41 and in particular the groove 52 or the insert 53 can be used to determine at which internal pressure the bottle 1 is automatically vented by means of the closure cap 11. And since the closure cap 11 is initially displaced axially upward by the play prevailing in the threads 6 and 14 at a slight excess pressure, the first seal 21 and also the second seal 31 can thereby become ineffective. In this case, however, the third seal 41 still lies sealingly on the mouthpiece 2 and is only lifted off at a certain pressure built up in the interior 10. Furthermore, the sealing lip 42 of the third seal 41 serves to relieve the elastically deformable zone 51 when screwing on the closure cap 11 provided on the inside with a spherical cap-shaped curvature 16.
  • a sealing ring 26 is provided as the first seal 21 ′, which rests on the end face 3 of the mouthpiece 2.
  • the cover plate 12 ' has a projection 17 which is provided with a concavely curved support surface 18, to which the sealing ring 26 can be glued, for example.
  • the second seal 31 'and the third seal 41' are formed in almost the same way and are effective together with the elastically deformable zone 51 'as in the embodiment according to FIGS. 1 to 3.
  • the cover plate 12 "of the cap 11" is also provided with a projection 19 which has a support surface 20 corresponding to the end face 3 of the mouthpiece 4 for a sealing ring 27 arranged between them.
  • the sealing ring 27 "forming the first seal 21" is in this case extended on both sides beyond the end face 3 of the mouthpiece 2, so that the second seal 31 "and the third seal 41” also cooperate with it.
  • the elastically deformable Zone 51 by one on the outside side formed in the cover plate 12 in the region of the sealing ring 27 in this molded annular groove 54.

Abstract

A closure cap (11) for a bottle (1) consists of a covering plate (12), surrounding the mouth (5) of the bottle, and a collar (13) which can be retained on the mouth-piece (2), a first seal (21), resting on the mouth-piece (2), and a second seal (31), which can be pressed onto the inside outer surface (4) of the mouth-piece, being mounted on the covering plate (12), and the closure cap having an elastically deformable zone (51), by means of which the covering plate (12) can be curved outwards in the manner of a membrane for venting the bottle (1) in dependence on the pressure prevailing in said bottle. The elastically deformable zone (51) is formed by grooves (52) which are machined into the covering plate (12) radially outside the first seal (21). Provided in the transition region between the collar (13) and the covering plate (12) is a third seal (41) which projects in the direction of the mouth-piece (2). This design of the closure cap (11) allows automatic venting in dependence on the internal pressure building up in the bottle (1) regardless of the outside temperature. Additionally, reliable sealing is guaranteed even in the case of different diameters of the mouth and/or damage. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Verschlußkappe für eine Flasche oder einen ähnlichen Hohlbehälter, die aus einer die Mündung der Flasche übergreifenden Deckplatte und einem an dieser angeformten an dem Mundstück arretierbaren Kragen besteht, wobei an der Deckplatte eine auf der Stirnfläche des Mundstückes aufliegende erste Dichtung und eine an dessen Innenmantelfläche anpreßbare zweite Dichtung angebracht sind und die Verschlußkappe eine elastisch verformbare Zone aufweist, durch die die Deckplatte zur Entlüftung des Innenraumes der Flasche in Abhängigkeit von dem in dieser herrschenden Druck nach Art einer Membran auswölbbar ausgebildet ist.The invention relates to a closure cap for a bottle or a similar hollow container, which consists of a cover plate which overlaps the mouth of the bottle and a collar which is integrally formed thereon and can be locked on the mouthpiece, with a first seal resting on the end face of the mouthpiece and a second seal that can be pressed onto the inner surface of the latter is attached and the closure cap has an elastically deformable zone, through which the cover plate for venting the interior of the bottle is designed to bulge out in the manner of a membrane depending on the pressure prevailing therein.

Durch die DE-A-29 02 859 ist eine Verschlußanordnung dieser Art für Behälter, insbesondere für Flaschen bekannt. Die Verschlußkappe besteht bei diesem Flaschenverschluß aus einem Kunststoff, dessen Biegesteifigkeit sich in Abhängigkeit von der Temperatur verändert, so daß bei einer über Raumtemperatur ansteigenden Temperatur die Deckplatte durch den durch die Temperaturerhöhung ansteigenden Behälterinnendruck auswölbbar ist. Die elastisch verformbare Zone ist somit durch eine kreisringförmige Biegezone im Übergangsbereich zwischen dem Kragen und der Deckplatte gebildet.DE-A-29 02 859 discloses a closure arrangement of this type for containers, in particular for bottles. The cap of this bottle closure consists of a plastic, the bending stiffness of which changes as a function of temperature, so that when the temperature rises above room temperature the cover plate can be arched out by the internal pressure of the container rising as a result of the temperature increase. The elastically deformable zone is thus formed by an annular bending zone in the transition area between the collar and the cover plate.

Durch die auf der Stirnfläche des Mundstückes aufliegenden ersten Dichtung und der an dessen Innenmantelfläche anliegenden zweiten Dichtung kann mit dieser Verschlußkappe zwar eine Flasche zuverlässig verschlossen werden, ein selbsttätiger Druckabbau im Flascheninnenraum ist jedoch nur bei einem durch erhöhte Außentemperatur bedingten Druckanstieg gegeben. Wird dagegen eine mit einem kohlensäurehaltigen Getränk gefüllte und mit einer solchen Verschlußkappe gesicherte Flasche bei Raumtemperatur geschüttelt, steigt der Innendruck durch die frei werdende Kohlensäure mitunter in einem erheblichen Maße an. Da aber in diesem Fall die Biegezone nicht wirksam ist, wird die Deckplatte auch nicht abgehoben und demnach wird der Innendruck nicht abgebaut. Beim Öffnen der Flasche kann das Getränk somit aus dieser herausspritzen, auch kann die Flasche durch zu hohen Druck zerstört werden. Des weiteren ist es außerordentlich schwierig, einen Werkstoff, der eine entsprechende elastische Verformung bei erhöhter Außentemperatur ermöglicht, auszuwählen. Wird nämlich eine Verschlußkappe aus einem weichen Material hergestellt, werden zwar Unebenheiten an der Flaschenmündung ausgeglichen, eine weiche Verschlußkappe kann aber leicht überdreht werden, so daß ein dichter Verschluß dann nicht mehr gegeben ist. Und bei einer aus einem harten Werkstoff gefertigten Verschlußkappe ist vielfach ein dichter Verschluß, da die Dichtungen nicht in einem ausreichenden Maße an dem Mundstück anliegen, nicht zu erzielen. Die bekannte Verschlußkappe ist demnach nicht praktikabel und nur begrenzt einsetzbar.Due to the first seal resting on the end face of the mouthpiece and the second seal resting on the inner surface of the mouth, a bottle can be reliably closed with this cap, but an automatic pressure reduction in the interior of the bottle is only given when the pressure rises due to increased outside temperature. If, on the other hand, a bottle filled with a carbonated beverage and secured with such a closure cap is shaken at room temperature, the internal pressure sometimes rises to a considerable extent due to the carbon dioxide released. However, since the bending zone is not effective in this case, the cover plate is not lifted off either and consequently the internal pressure is not reduced. When the bottle is opened, the beverage can splash out of it, and the bottle can also be destroyed by excessive pressure. Furthermore, it is extremely difficult to select a material that enables a corresponding elastic deformation at an elevated outside temperature. If a closure cap is made of a soft material, unevenness at the bottle mouth is compensated, but a soft closure cap can be easily turned over so that a tight closure is no longer provided. And in the case of a closure cap made of a hard material, a tight closure can often not be achieved, since the seals do not lie against the mouthpiece to a sufficient extent. The known cap is therefore not practical and can only be used to a limited extent.

Aufgabe der Erfindung ist es daher, eine Verschlußkappe der vorgenannten Gattung zu schaffen, die nicht nur auf einfache und wirtschaftliche Weise herzustellen ist, sondern mittels der vor allem eine selbsttätige Entlüftung in Abhängigkeit von dem in einer Flasche sich aufbauenden Innendruck und unabhängig von der Außentemperatur gewährleistet ist. Des weiteren soll erreicht werden, daß auch bei unterschiedlichen Mündungsdurchmessern und/oder beispielsweise durch das Füllrohr beschädigten Flaschenmündungen eine zuverlässige Abdichtung der Flasche, und zwar auch nach einer Entlüftung, zu bewerkstelligen ist und daß ein Entlüften bei einem wählbaren Grenzwert erfolgt. Die somit als Überdruckventil wirkende Verschlußkappe soll je nach Verwendungszweck ohne weiteres auf unterschiedliche Überdrücke ausgelegt werden können, auch soll diese problemlos zu öffnen sein,und eine Flasche soll wiederholt mit dieser Verschlußkappe ohne Schwierigkeiten verschlossen werden können.The object of the invention is therefore to provide a cap of the aforementioned type, which is not only easy and economical to manufacture, but above all ensures automatic ventilation depending on the internal pressure building up in a bottle and regardless of the outside temperature is. Furthermore, it should be achieved that even with different mouth diameters and / or bottle mouths damaged by the filling tube, for example, reliable sealing of the bottle can be achieved, even after venting, and that venting takes place at a selectable limit value. The cap, which thus acts as a pressure relief valve, should be able to be designed for different overpressures, depending on the intended use, and it should also be easy to open, and a bottle should be able to be closed repeatedly with this cap without difficulty.

Gemäß der Erfindung wird dies dadurch erreicht, daß die elastisch verformbare Zone der Verschlußkappe durch radial außerhalb der ersten Dichtung in die Deckplatte auf deren Innenseite und/oder deren Außenseite eingearbeitete vorzugsweise umlaufende Nuten gebildet ist, und daß im Übergangsbereich zwischen dem Kragen und der Deckplatte an dieser neben der elastisch verformbaren Zone oder mit Abstand zu dieser eine in Richtung des Mundstückes der Flasche abstehende dritte Dichtung vorgesehen ist.According to the invention this is achieved in that the elastically deformable zone of the closure cap is formed by radially outside the first seal in the cover plate on the inside and / or outside thereof preferably circumferential grooves, and in that in the transition area between the collar and the cover plate this is provided next to the elastically deformable zone or at a distance from it a third seal projecting in the direction of the mouthpiece of the bottle.

Zweckmäßig ist es hierbei, die auf der Stirnfläche des Mundstückes aufliegende erste Dichtung durch zwei konzentrisch angeordnete in Achsrichtung des Mundstückes nach innen vorzugsweise unter einem Winkel a von 10° - 15° zur Längsachse der Flasche geneigt verlaufende Dichtlippen zu bilden und die radial innere Dichtlippe in Achsrichtung über die radial äußere Dichtlippe überstehen zu lassen, wobei die beiden Dichtlippen im Querschnitt in Richtung des Mundstückes konisch verjüngt ausgebildet sein und jeweils eine nach innen geneigt verlaufende vorzugsweise in einer Ebene angeordnete und unter einem Winkel β von 20° bis 40°, vorzugsweise von 25°, zur Ebene der Deckkappe verlaufende Anlagefläche aufweisen sollten.It is expedient here to form the first seal resting on the end face of the mouthpiece by means of two concentrically arranged sealing lips which are inclined inwardly in the axial direction of the mouthpiece, preferably at an angle a of 10 ° -15 ° to the longitudinal axis of the bottle, and the radially inner sealing lip in To let the axial direction protrude beyond the radially outer sealing lip, the two sealing lips being conically tapered in cross-section in the direction of the mouthpiece and each having an inwardly inclined, preferably arranged in one plane and at an angle β of 20 ° to 40 °, preferably of 25 °, should have contact surface running to the level of the top cap.

Die erste Dichtung kann aber auch durch einen in die Verschlußkappe eingesetzten Dichtring gebildet sein, und zur Halterung des Dichtringes sollte die Deckplatte einen umlaufenden, vorzugsweise mit einer konvex gekrümmt ausgebildeten Stützfläche versehenen Vorsprung oder abstehende Stege aufweisen.However, the first seal can also be formed by a sealing ring inserted into the sealing cap, and to hold the sealing ring, the cover plate should have a circumferential projection or protruding webs, preferably provided with a convexly curved support surface.

Die zweite mit der Innenmantelfäche des Mundstückes zusammenwirkende Dichtung der Deckplatte sollte ebenfalls in Form einer zur Flaschenlängsachse geneigt verlaufenden Dichtlippe ausgebildet sein, deren nach innen gerichtete Mantelfäche konzentrisch zu dem Kragen der Verschlußkappe und deren diesem zugekehrte Mantelfläche unter einem Winkel y von 10° bis 15°, vorzugsweise unter einem Winkel von 12°, in Achsrichtung des Mundstückes nach innen geneigt verlaufend ausgebildet sein sollte.The second with the inner surface of the Mouthpiece cooperating seal of the cover plate should also be designed in the form of a sealing lip inclined to the longitudinal axis of the bottle, the inward facing surface of which is concentric with the collar of the closure cap and its facing surface at an angle y of 10 ° to 15 °, preferably at an angle of 12 °, should be designed inclined inwards in the axial direction of the mouthpiece.

Des weiteren ist es angebracht, auch die dritte Dichtung der Verschlußkappe durch eine in Richtung des Mundstückes der Flasche abstehende Dichtlippe zu bilden, die im Querschnitt etwa trapezförmig gestaltet sein und eine nach außen geneigt verlaufende Anlagefläche aufweisen sollte.Furthermore, it is appropriate to also form the third seal of the closure cap by means of a sealing lip which projects in the direction of the mouthpiece of the bottle and which is designed to be approximately trapezoidal in cross section and should have an abutment surface which slopes outward.

Die elastisch verformbare Zone der Verschlußkappe ist nach einer bevorzugten Ausführung durch eine umlaufende auf der Innenseite der Deckkappe in diese eingearbeitete etwa halbkreisförmig ausgebildete und in die Außenmantelfläche der Dichtlippe der dritten Dichtung übergehende Nut auszubilden. Es ist aber auch möglich, die elastisch verformbare Zone der Verschlußkappe durch eine in die Deckplatte eingesetzte ringförmige Einlage aus einem elastisch verformbaren Werkstoff zu schaffen.According to a preferred embodiment, the elastically deformable zone of the closure cap is to be formed by a circumferential groove, which is worked into the inside of the cover cap and is approximately semicircular and merges into the outer surface of the sealing lip of the third seal. However, it is also possible to create the elastically deformable zone of the closure cap by means of an annular insert made of an elastically deformable material and inserted into the cover plate.

Angezeigt ist es ferner, daß die dem Mundstück der Flasche zugewandte Seite der Deckkappe in dem inneren Bereich zwischen der zweiten Dichtung eine symmetrische kugelkalottenförmig ausgebildete Wölbung aufweist und daß an dem freien Ende des Kragens der Verschlußkappe ein sich an dem Mundstück der Flasche abstützender Sicherungsring angeformt ist.It is furthermore indicated that the side of the top cap facing the mouthpiece of the bottle has a symmetrical spherical cap-shaped curvature in the inner region between the second seal and that a retaining ring is formed on the free end of the collar of the closure cap and is formed on the mouthpiece of the bottle .

Wird eine Verschlußkappe gemäß der Erfindung ausgebildet, indem in deren Deckplatte eine elastisch verformbare Zone eingearbeitet und im radial äußeren Bereich der Deckplatte eine dritte Dichtung angeformt werden, so ist es möglich, den Innenraum einer mit dieser Verschlußkappe ausgestatteten Flasche selbsttätig in Abhängigkeit von dem herrschenden Innendruck und unabhängig von der jeweiligen Außentemperatur kurzzeitig zu entlüften und somit den Druck abzubauen, so daß Beeinträchtigungen des Füllgutes und/oder eine Zerstörung der Flaschen zuverlässig vermieden werden. Vor allem ist hierbei von Vorteil, daß die erste Dichtung durch die sich in die Ausgangslage zurückstellende Deckplatte wiederum gegen die Stirnfläche des Mundstückes und die zweite Dichtung, durch die auch Maßtoleranzen und Beschädigungen auszugleichen sind, gegen dessen Innenmantelfläche gepreßt werden, ein sicherer Verschluß der Flasche ist somit, auch bei einer mehrmaligen Entlüftung, gegeben. Durch die dritte äußere Dichtung ist ferner gewährleistet, daß erst bei einem bestimmten wählbaren Innendruck die Verschlußkappe als Überdruckventil wirksam ist. Und da die elastische Zone ohne Schwierigkeiten in die Deckplatte bei deren Herstellung eingeformt werden kann, ist auch eine wirtschaftliche Herstellung der vorschlagsgemäß ausgebildeten Verschlußkappe, die für alle im Umlauf befindlichen Flaschen oder ähnliche Hohlbehälter verwendbar und auf herkömmlichen Verschlußmaschinen verarbeitbar ist, gewährleistet.If a closure cap according to the invention is formed by incorporating an elastically deformable zone into its cover plate and a third seal being formed in the radially outer region of the cover plate, it is possible for the interior of a bottle equipped with this closure cap to function automatically as a function of the prevailing internal pressure and to vent for a short time regardless of the respective outside temperature and thus to reduce the pressure, so that impairment of the contents and / or destruction of the bottles are reliably avoided. Above all, it is advantageous here that the first seal is pressed against the end face of the mouthpiece by the cover plate returning to the starting position, and the second seal, by means of which dimensional tolerances and damage can also be compensated for, are pressed against the inner jacket surface thereof, a secure closure of the bottle is therefore given, even with repeated venting. The third outer seal also ensures that the cap is only effective as a pressure relief valve at a certain selectable internal pressure. And since the elastic zone can be easily molded into the cover plate during its manufacture, an economical manufacture of the proposed closure cap, which can be used for all bottles or similar hollow containers in circulation and can be processed on conventional closure machines, is also guaranteed.

In der Zeichnung sind einige Ausführungsbeispiele der gemäß der Erfindung ausgebildeten Verschlußkappe dargestellt, die nachfolgend im einzelnen erläutert sind. Hierbei zeigt, jeweils in einem Axialschnitt:

  • Figur 1 eine mit einer elastischen Zone und drei Dichtungen ausgestattete auf einer Flasche aufgeschraubte Verschlußkappe,
  • Figur 2 einen Ausschnitt der Verschlußkappe nach Figur 1, in einer vergrößerten Darstellung,
  • Figur 3 die Verschlußkappe nach Figur 1 mit einer durch eine Einlage gebildeten elastisch verformbaren Zone und
  • Figuren 4 und 5 die Verschlußkappe nach Figur 1 mit einer andersartig ausgebildeten ersten Dichtung.
In the drawing, some embodiments of the closure cap designed according to the invention are shown, which are explained in detail below. Here shows, each in an axial section:
  • FIG. 1 shows a closure cap screwed onto a bottle and equipped with an elastic zone and three seals,
  • FIG. 2 shows a detail of the closure cap according to FIG. 1, in an enlarged view,
  • Figure 3 shows the closure cap of Figure 1 with an elastically deformable zone formed by an insert and
  • Figures 4 and 5, the closure cap of Figure 1 with a differently designed first seal.

Die in den Figuren 1 bis 3 dargestellte und mit 11 bezeichnete Verschlußkappe besteht aus einer planen Deckplatte 12 und einem an dieser angeformten Kragen 13 und ist auf dem mit einem Außengewinde 6 versehenen Mundstück 2 einer Flasche 1, um deren Mündung 5 zu verschließen, aufgeschraubt. Der Kragen 13 ist dazu mit einem Innengewinde 14 versehen. Außerdem ist an dem Kragen 13 ein Sicherungsring 15 angebracht, der im verschlossenen Zustand einen an dem Mundstück 2 angeformten Bund 7 hintergreift.The closure cap shown in FIGS. 1 to 3 and designated 11 consists of a flat cover plate 12 and a collar 13 formed thereon and is screwed onto the mouthpiece 2 of a bottle 1 provided with an external thread 6 in order to close its mouth 5. For this purpose, the collar 13 is provided with an internal thread 14. In addition, a collar 15 is attached to the collar 13 which, in the closed state, engages behind a collar 7 formed on the mouthpiece 2.

Um eine sichere Abdichtung des Innenraumes 10 der Flasche 1 zu gewährleisten, sind an der aus einem Kunststoffmaterial gefertigten Verschlußkappe 11 eine erste Dichtung 21, die mit der Stirnfläche 3 des Mundstückes 2 zusammenwirkt, eine zweite Dichtung 31, die an dessen Innenmantelfläche 4 anpreßbar ist, sowie eine dritte Dichtung 41, die im äußeren Bereich des Mundstückes 2 an diesem anliegt, angeformt. Des weiteren ist die Verschlußkappe 11 mit einer zwischen der ersten Dichtung 21 und der dritten Dichtung 41 angeordneten elastisch verformbaren Zone 51 versehen, mittels der eine selbsttätige und zuverlässige Entlüftung des Innenraumes 10 der Flasche 1 in Abhängigkeit von dem in dieser herrschenden Innendruck bewerkstelligt wird.In order to ensure a secure seal of the interior 10 of the bottle 1, a first seal 21, which interacts with the end face 3 of the mouthpiece 2, is a second seal 31, which can be pressed onto the inner lateral surface 4 of the closure cap 11 made of a plastic material, and a third seal 41, which rests on the outer area of the mouthpiece 2, is integrally formed. Furthermore, the closure cap 11 is provided with an elastically deformable zone 51 arranged between the first seal 21 and the third seal 41, by means of which an automatic and reliable ventilation of the interior 10 of the bottle 1 is accomplished as a function of the internal pressure prevailing therein.

Die erste Dichtung 21 besteht bei dem Ausführungsbeispiel nach den Figuren 1 bis 3 aus zwei konzentrisch angeordneten Dichtlippen 22 und 23, die unter einem Winkel a von 20° zur Längsachse der Flasche 1 nach innen geneigt verlaufen. Außerdem sind die im Querschnitt sich konisch verjüngend ausgebildeten Dichtlippen 22 und 23 an ihren Enden mit Anlageflächen 24 und 25 ausgestattet, die in einer Ebene verlaufen und unter einem Winkel β von 25° zur Ebene der Deckplatte 12 geneigt sind. Auf diese Weise ist eine sichere Anlage auf der Stirnfläche 3 des Mundstückes 2 gewährleistet.In the exemplary embodiment according to FIGS. 1 to 3, the first seal 21 consists of two concentrically arranged sealing lips 22 and 23, which are inclined inwards at an angle a of 20 ° to the longitudinal axis of the bottle 1. In addition, the sealing lips 22 and 23, which are conically tapered in cross section, are provided at their ends with contact surfaces 24 and 25 which run in one plane and are inclined at an angle β of 25 ° to the plane of the cover plate 12. In this way, a secure contact on the end face 3 of the mouthpiece 2 is guaranteed.

Die zweite Dichtung 31 ist ebenfalls durch eine Dichtlippe 32 gebildet. Die nach innen gerichtete Mantelfläche 33 der Dichtlippe 32 verläuft hierbei konzentrisch zu dem Kragen 13, die diesem zugekehrte äußere Mantelfläche 34 ist dagegen unter einem Winkel y von 12° in Achsrichtung des Mundstückes 2 nach innen geneigt verlaufend ausgebildet. Dadurch ist sichergestellt, daß auch bei in Grenzen unterschiedlichen Innendurchmessern der Mündung 5 des Mundstückes 2 und/oder bei z. B. durch ein Füllrohr hervorgerufene Beschädigungen dennoch eine dichtende Anlage der Dichtlippe 32 an der Innenmantlfläche 4 des Mundstückes 2 gegeben ist. Die Dichtlippe 32 wird nämlich durch den in dem Innenraum 10 der Flasche 1 herrschenden Druck gegen das Mundstück 4 gepreßt.The second seal 31 is also formed by a sealing lip 32. The inward jacket surface 33 of the sealing lip 32 runs concentrically to the collar 13, the outer jacket surface 34 facing it, on the other hand, is inclined inwardly at an angle y of 12 ° in the axial direction of the mouthpiece 2. This ensures that even with different inside diameters of the mouth 5 of the mouthpiece 2 and / or at z. B. caused by a filler pipe nevertheless a sealing contact of the sealing lip 32 on the inner surface 4 of the mouthpiece 2 is given. The sealing lip 32 is namely pressed against the mouthpiece 4 by the pressure prevailing in the interior 10 of the bottle 1.

Die dritte Dichtung 41 besteht ebenfalls aus einer Dichtlippe 42, die im Querschnitt etwa trapezförmig gestaltet ist und eine nach außen geneigt verlaufende Anlagefläche 43 aufweist. Die Dichtlippe 42 wirkt mit dem äußeren Teil des Mundstückes 2 zusammen und dichtet den Innenraum 10 der Flasche 1 zusätzlich ab. Selbst wenn die erste Dichtung 21 und die zweite Dichtung 31 aufgrund eines geringen Überdruckes in der Flasche 1 nicht mehr an der Stirnfläche 3 bzw. der Innenmantelfläche 4 des Mundstückes 2 dichtend anliegen, ist somit dennoch ein dichter Verschluß gegeben.The third seal 41 also consists of a sealing lip 42, which is approximately trapezoidal in cross section and has an outwardly inclined contact surface 43. The sealing lip 42 interacts with the outer part of the mouthpiece 2 and additionally seals the interior 10 of the bottle 1. Even if the first seal 21 and the second seal 31 no longer lie sealingly against the end face 3 or the inner lateral surface 4 of the mouthpiece 2 due to a slight overpressure in the bottle 1, a tight seal is nevertheless provided.

Damit die Deckplatte 12 der Verschlußkappe 11 bei einem in dem Innenraum 10 der Flasche 1 sich aufbauenden Überdruck nach Art einer Membran ausgewölbt werden kann und demnach die Verschlußkappe 11 als Überdruckventil wirksam ist, ist in die Deckplatte 12 die elastisch verformbare Zone 51 in Form einer Nut 52 eingearbeitet. Die Nut 52 weist einen halbkreisförmigen Querschnitt auf und geht in die Außenmantelfläche der äußeren Dichtlippe 23 der ersten Dichtung 21 und in die Innenmantelfläche der Dichtlippe 42 der dritten Dichtung 41 über.So that the cover plate 12 of the cap 11 can be bulged out in the interior 10 of the bottle 1 overpressure in the manner of a membrane and accordingly the closure cap 11 acts as a pressure relief valve, the elastically deformable zone 51 is in the form of a groove in the cover plate 12 52 incorporated. The groove 52 has a semicircular cross section and merges into the outer lateral surface of the outer sealing lip 23 of the first seal 21 and into the inner lateral surface of the sealing lip 42 of the third seal 41.

Gemäß Figur 3 kann im Bereich der elastisch verformbaren Zone 51 auch eine Einlage 53 aus einem elastisch verformbaren Werkstoff eingesetzt werden. Je nach Wahl des Werkstoffes der Einlage 53 kann die Verformbarkeit der Deckplatte 12 an den jeweiligen Einsatzzweck der Verschlußkappe 11 angepaßt werden.According to FIG. 3, an insert 53 made of an elastically deformable material can also be used in the region of the elastically deformable zone 51. Depending on the choice of the material of the insert 53, the deformability of the cover plate 12 can be adapted to the particular application of the closure cap 11.

Bei auf das Mundstück 2 aufgeschraubter Verschlußkappe 11 wird der Innenraum 10 der Flasche 1 durch die anliegenden Dichtungen 21, 31 und 41, wie dies in Figur 1 dargestellt ist, sicher verschlossen. Bei durch Temperaturerhöhungen, Erschütterungen oder auf andere Weise bedingtem Druckanstieg wird jedoch die Deckplatte 12 angehoben, so daß der Innenraum durch einen sich bildenden Spalt zwischen der Stirnfläche 3 des Mundstückes 2 und den Dichtungen 21, 31 und 41 abgebaut werden kann. Sobald jedoch die von der elastisch verformbaren Zone 51 auf die Deckplatte 12 ausgeübte Rückstellkraft wiederum größer ist als die von dem Innendruck ausgeübte Kraft, wird die Deckplatte 12 in die Ausgangslage zurückgeführt, die Flasche ist erneut dichtend verschlossen.When the closure cap 11 is screwed onto the mouthpiece 2, the interior 10 of the bottle 1 is securely closed by the adjacent seals 21, 31 and 41, as shown in FIG. 1. In the event of temperature increases, shocks or other pressure increases caused by the cover plate 12 is raised so that the interior can be reduced by a gap between the end face 3 of the mouthpiece 2 and the seals 21, 31 and 41. However, as soon as the restoring force exerted by the elastically deformable zone 51 on the cover plate 12 is again greater than the force exerted by the internal pressure, the cover plate 12 is returned to the starting position and the bottle is sealed again.

Durch die Form und Größe der Dichtungen 21, 31 und 41 und insbesondere der Nut 52 bzw. der Einlage 53 kann vorbestimmt werden, bei welchem Innendruck mittels der Verschlußkappe 11 selbsttätig eine Entlüftung der Flasche 1 erfolgt. Und da sich bei einem geringen Überdruck die Verschlußkappe 11 zunächst um das in den Gewinden 6 und 14 vorherrschende Spiel axial nach oben verschoben wird, können dadurch die erste Dichtung 21 und auch die zweite Dichtung 31 unwirksam werden. Die dritte Dichtung 41 liegt aber in diesem Fall noch dichtend an dem Mundstück 2 an und wird erst bei einem bestimmten in den Innenraum 10 aufgebauten Druck abgehoben. Des weiteren dient die Dichtlippe 42 der dritten Dichtung 41 zur Entlastung der elastisch verformbaren Zone 51 beim Aufschrauben der auf der Innenseite mit einer kugelkalottenförmig ausgebildeten Wölbung 16 versehenen Verschlußkappe 11.The shape and size of the seals 21, 31 and 41 and in particular the groove 52 or the insert 53 can be used to determine at which internal pressure the bottle 1 is automatically vented by means of the closure cap 11. And since the closure cap 11 is initially displaced axially upward by the play prevailing in the threads 6 and 14 at a slight excess pressure, the first seal 21 and also the second seal 31 can thereby become ineffective. In this case, however, the third seal 41 still lies sealingly on the mouthpiece 2 and is only lifted off at a certain pressure built up in the interior 10. Furthermore, the sealing lip 42 of the third seal 41 serves to relieve the elastically deformable zone 51 when screwing on the closure cap 11 provided on the inside with a spherical cap-shaped curvature 16.

Bei der in Figur 4 dargestellten Verschlußkappe 11' ist als erste Dichtung 21' ein Dichtring 26 vorgesehen, der auf der Stirnfläche 3 des Mundstückes 2 aufliegt. Zur Halterung des Dichtringes 26 weist die Deckplatte 12' einen Vorsprung 17 auf, der mit einer konkav gekrümmten Stützfläche 18 versehen ist, auf die der Dichtring 26 beispielsweise aufgeklebt sein kann. Die zweite Dichtung 31' sowie die dritte Dichtung 41' sind in nahezu gleicher Weise ausgebildet und zusammen mit der elastisch verformbaren Zone 51' wie bei dem Ausführungsbeispiel nach den Figuren 1 bis 3 wirksam.In the closure cap 11 ′ shown in FIG. 4, a sealing ring 26 is provided as the first seal 21 ′, which rests on the end face 3 of the mouthpiece 2. To hold the sealing ring 26, the cover plate 12 'has a projection 17 which is provided with a concavely curved support surface 18, to which the sealing ring 26 can be glued, for example. The second seal 31 'and the third seal 41' are formed in almost the same way and are effective together with the elastically deformable zone 51 'as in the embodiment according to FIGS. 1 to 3.

Gemäß Figur 5 ist die Deckplatte 12" der Verschlußkappe 11" ebenfalls mit einem Vorsprung 19 versehen, der eine der Stirnfläche 3 des Mundstükkes 4 entsprechende Stützfläche 20 für einen zwischen diesen angeordneten Dichtring 27 aufweist. Der die erste Dichtung 21" bildende Dichtring 27 ist hierbei beidseitig über die Stirnfläche 3 des Mundstückes 2 hinaus verlängert ausgebildet, so daß mit diesem auch die zweite Dichtung 31" und die dritte Dichtung 41" zusammenwirken. Des weiteren ist bei dieser Ausgestaltung die elastisch verformbare Zone 51" durch eine auf der Außenseite in die Deckplatte 12 im Bereich des Dichtringes 27 in diese eingeformte Ringnut 54 gebildet.According to Figure 5, the cover plate 12 "of the cap 11" is also provided with a projection 19 which has a support surface 20 corresponding to the end face 3 of the mouthpiece 4 for a sealing ring 27 arranged between them. The sealing ring 27 "forming the first seal 21" is in this case extended on both sides beyond the end face 3 of the mouthpiece 2, so that the second seal 31 "and the third seal 41" also cooperate with it. Furthermore, in this embodiment, the elastically deformable Zone 51 "by one on the outside side formed in the cover plate 12 in the region of the sealing ring 27 in this molded annular groove 54.

Claims (15)

1. Verschlußkappe (11) für eine Flasche (1) oder einen ähnlichen Hohlbehälter, die aus einer die Mündung (5) der Flasche (1) übergreifenden Deckplatte (12) und einem an dieser angeformten an dem Mundstück (2) arretierbaren Kragen (13) besteht, wobei an der Deckplatte (12) eine auf der Stirnfläche (3) des Mundstückes (2) aufliegende erste Dichtung (21) und eine an dessen Innenmantelfläche (4) anpreßbare zweite Dichtung (31) angebracht sind und die Verschlußkappe (11) eine elastisch verformbare Zone (51) aufweist, durch die die Deckplatte (12) zur Entlüftung des Innenraumes (10) der Flasche (1) in Abhängigkeit von dem in dieser herrschenden Druck nach Art einer Membran auswölbbar ist,
dadurch gekennzeichnet,
daß die elastisch verformbare Zone (51, 51', 51") der Verschlußkappe (11, 11', 11 ") durch radial außerhalb der ersten Dichtung (21, 21', 21") in die Deckplatte (12, 12', 12") auf deren Innenseite und/oder deren Außenbseite eingearbeitete vorzugsweise umlaufende Nuten (52; 54) gebildet ist und daß im Übergangsbereich zwischen dem Kragen (13) und der Deckplatte (12, 12', 12") an dieser neben der elastisch verformbaren Zone (51, 51', 51") oder mit Abstand zu dieser eine in Richtung des Mundstückes (2) der Flasche (1) abstehende dritte Dichtung (41, 41', 41 ") vorgesehen ist.1. Cap (11) for a bottle (1) or a similar hollow container, which consists of a cover plate (12) which overlaps the mouth (5) of the bottle (1) and a collar (13) which can be locked onto the mouthpiece (2) and can be locked ), a first seal (21) resting on the end face (3) of the mouthpiece (2) and a second seal (31) that can be pressed onto the inner surface (4) of the cover plate (12) and the closure cap (11) has an elastically deformable zone (51) through which the cover plate (12) can be arched out in the manner of a membrane for venting the interior (10) of the bottle (1) depending on the pressure prevailing therein,
characterized,
that the elastically deformable zone (51, 51 ', 51 ") of the closure cap (11, 11', 11") radially outside the first seal (21, 21 ', 21 ") in the cover plate (12, 12', 12th ") is formed on the inside and / or the outside thereof preferably circumferential grooves (52; 54) and that in the transition area between the collar (13) and the cover plate (12, 12 ', 12") on this next to the elastically deformable zone (51, 51 ', 51 ") or at a distance from this a third seal (41, 41', 41") projecting in the direction of the mouthpiece (2) of the bottle (1) is provided. 2. Verschlußkappe nach Anspruch 1,
dadurch gekennzeichnet,
daß die auf der Stirnfläche (3) des Mundstükkes (2) aufliegende erste Dichtung (21) durch zwei konzentrisch angeordnete in Achsrichtung des Mundstückes (2) nach innen vorzugsweise unter einem Winkel a von 10°- 15° zur Längsachse der Fläche (1) geneigt verlaufende Dichtlippen (22, 23) gebildet ist.2. closure cap according to claim 1,
characterized,
that the first seal (21) resting on the end face (3) of the mouthpiece (2) by two concentrically arranged in the axial direction of the mouthpiece (2) inwards preferably at an angle a of 10 ° - 15 ° to the longitudinal axis of the surface (1) inclined sealing lips (22, 23) is formed. 3. Verschlußkappe nach Anspruch 2,
dadurch gekennzeichnet,
daß die radial innere Dichtlippe (22) der ersten Dichtung (21) in Achsrichtung über die radial äußere Dichtlippe (23) übersteht.3. closure cap according to claim 2,
characterized,
that the radially inner sealing lip (22) of the first seal (21) projects in the axial direction over the radially outer sealing lip (23). 4. Verschlußkappe nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
daß die beiden Dichtlippen (22, 23) der ersten Dichtung (21) im Querschnitt in Richtung des Mundstückes (2) konisch verjüngt ausgebildet sind.4. Cap according to claim 2 or 3,
characterized,
that the two sealing lips (22, 23) of the first seal (21) are conically tapered in cross-section in the direction of the mouthpiece (2). 5. Verschlußkappe nach einem oder mehreren der Ansprüche 2 bis 4,
dadurch gekennzeichnet,
daß die beiden Dichtlippen (22, 23) der ersten Dichtung (21) jeweils eine nach innen geneigt verlaufende vorzugsweise in einer Ebene sich erstreckende und unter einem Winkel β von 20° bis 40°, vorzugsweise von 25°, zur Ebene der Deckplatte (12) verlaufende Anlagefläche (24, 25) aufweisen.5. closure cap according to one or more of claims 2 to 4,
characterized,
that the two sealing lips (22, 23) of the first seal (21) each have an inwardly inclined, preferably extending in one plane and at an angle β of 20 ° to 40 °, preferably 25 °, to the plane of the cover plate (12 ) have running contact surface (24, 25). 6. Verschlußkappe nach Anspruch 1,
dadurch gekennzeichnet,
daß die erste Dichtung (21', 21") durch einen in die Verschlußkappe (11, 11') eingesetzten Dichtring (26, 27) gebildet ist, und daß zur Halterung des Dichtringes (26, 27) die Deckplatte (12', 12") einen umlaufenden, vorzugsweise mit einer konkav gekrümmt ausgebildeten Stützfläche (18; 20) versehen Vorsprung (17; 19) oder abstehende Stege aufweist.6. closure cap according to claim 1,
characterized,
that the first seal (21 ', 21 ") is formed by a sealing ring (26, 27) inserted into the sealing cap (11, 11'), and that for holding the sealing ring (26, 27) the cover plate (12 ', 12 ") has a circumferential projection (17; 19) or projecting webs, preferably provided with a concavely curved support surface (18; 20). 7. Verschlußkappe nach Anspruch 1,
dadurch gekennzeichnet,
daß die zweite mit der Innenmantelfläche (4) des Mundstückes (2) zusammenwirkende Dichtung (31) in Form einer zur Längsachse der Flasche (1) geneigt verlaufenden Dichtlippe (32) ausgebildet ist.7. closure cap according to claim 1,
characterized,
that the second seal (31) cooperating with the inner surface area (4) of the mouthpiece (2) is designed in the form of a sealing lip (32) which is inclined to the longitudinal axis of the bottle (1). 8. Verschlußkappe nach Anspruch 7,
dadurch gekennzeichnet,
daß die nach innen gerichtete Mantelfläche (33) der Dichtlippe (32) der zweiten Dichtung (31) konzentrisch zu dem Kragen (13) der Verschlußkappe (11) und die diesem zugekehrte Mantelfläche (33) der Dichtlippe (32) unter einem Winkel y von 10° bis 15°, vorzugsweise unter einem Winkel von 12°, in Achsrichtung des Mundstückes (2) nach innen geneigt verlaufend ausgebildet sind.8. closure cap according to claim 7,
characterized,
that the inward jacket surface (33) of the sealing lip (32) of the second seal (31) concentric with the collar (13) of the sealing cap (11) and the jacket surface (33) of the sealing lip (32) facing it at an angle y of 10 ° to 15 °, preferably at an angle of 12 °, are inclined inwards in the axial direction of the mouthpiece (2). 9. Verschlußkappe nach Anspruch 1,
dadurch gekennzeichnet,
daß die dritte Dichtung (41, 41', 41") der Verschlußkappe (11, 11', 11 ") durch eine in Richtung des Mundstückes (2) abstehende Dichtlippe (42) gebildet ist.9. closure cap according to claim 1,
characterized,
that the third seal (41, 41 ', 41 ") of the closure cap (11, 11', 11") is formed by a sealing lip (42) projecting in the direction of the mouthpiece (2). 10. Verschlußkappe nach Anspruch 9,
dadurch gekennzeichnet,
daß die Dichtlippe (42) der dritten Dichtung (41, 41', 41 ") im Querschnitt etwa trapezförmig ausgebildet ist.10. closure cap according to claim 9,
characterized,
that the sealing lip (42) of the third seal (41, 41 ', 41 ") is approximately trapezoidal in cross section. 11. Verschlußkappe nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
daß die Dichtlippe (42) der dritten Dichtung (41) eine nach außen geneigt verlaufende Anlagefläche (43) aufweist.11. Cap according to claim 9 or 10,
characterized,
that the sealing lip (42) of the third seal (41) has an outwardly inclined contact surface (43). 12. Verschlußkappe nach einem oder mehreren der Ansprüche 1 bis 11,
dadurch gekennzeichnet,
daß die elastisch verformbare Zone (51) der Verschlußkappe (11) durch eine umlaufende auf der Innenseite der Deckkappe (12) in diese eingearbeitete etwa halbkreisförmig und in die Außenmantelfläche der äußeren Dichtlippe (23) der ersten Dichtung (21) und in die Innenmantelfläche der Dichtlippe (42) der dritten Dichtung (41) übergehende Nut (52) ausgebildet ist.12. closure cap according to one or more of claims 1 to 11,
characterized,
that the elastically deformable zone (51) of the closure cap (11) by a circumferential on the inside of the top cap (12) worked into this approximately semicircular and in the outer surface of the outer sealing lip (23) of the first seal (21) and in the inner surface of the Sealing lip (42) of the third seal (41) merging groove (52) is formed. 13. Verschlußkappe nach Anspruch 1 oder 12,
dadurch gekennzeichnet,
daß die elastisch verformbare Zone (51') der Verschlußkappe (11) durch eine in die Deckplatte (12) eingesetzte ringförmige Einlage (53) aus einem elastisch verformbaren Werkstoff gebildet ist.13. Cap according to claim 1 or 12,
characterized,
that the elastically deformable zone (51 ') of the closure cap (11) is formed by an annular insert (53) made of an elastically deformable material and inserted into the cover plate (12). 14. Verschlußkappe nach einem oder mehreren der Ansprüche 1 bis 13,
dadurch gekennzeichnet,
daß die dem Mundstück (2) der Flasche (1) zugewandte Seite der Deckplatte (12) in dem Bereich zwischen der zweiten Dichtung (31) eine symmetrische kugelkalottenförmig ausgebildete Wölbung (16) aufweist.14. closure cap according to one or more of claims 1 to 13,
characterized,
that the side of the cover plate (12) facing the mouthpiece (2) of the bottle (1) has a symmetrical curvature (16) in the region between the second seal (31). 15. Verschlußkappe nach einem oder mehreren der Ansprüche 1 bis 14,
dadurch gekennzeichnet,
daß an dem freien Ende des Kragens (13) der Verschlußkappe (11) ein sich an dem Mundstück (2) der Flasche (1) abstützender Sicherungsring (15) angeformt ist.15. closure cap according to one or more of claims 1 to 14,
characterized,
that on the free end of the collar (13) of the cap (11) is formed on the mouthpiece (2) of the bottle (1) support ring (15) is formed.
EP91109135A 1990-06-13 1991-06-04 Self venting bottle closure Expired - Lifetime EP0464384B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4018845 1990-06-13
DE4018845 1990-06-13
DE4023645 1990-07-25
DE4023645 1990-07-25

Publications (2)

Publication Number Publication Date
EP0464384A1 true EP0464384A1 (en) 1992-01-08
EP0464384B1 EP0464384B1 (en) 1994-11-02

Family

ID=25894084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109135A Expired - Lifetime EP0464384B1 (en) 1990-06-13 1991-06-04 Self venting bottle closure

Country Status (5)

Country Link
EP (1) EP0464384B1 (en)
AT (1) ATE113548T1 (en)
DE (2) DE59103401D1 (en)
DK (1) DK0464384T3 (en)
ES (1) ES2064809T3 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241341C1 (en) * 1992-12-08 1993-12-23 Wilhelm Dipl Ing Wazel Closure, in particular bottle closure
WO1997016356A1 (en) * 1995-10-31 1997-05-09 Safety Cap System Ag Closure for a bottle or the like
US5785196A (en) * 1995-05-31 1998-07-28 Rexam Closures Inc. Closure for a pressurized container
EP0982234A1 (en) 1998-08-22 2000-03-01 Crown Cork &amp; Seal Technologies Corporation Closure cap
DE19952214A1 (en) * 1999-10-29 2001-05-31 Breuer Hans Werner Cup-shaped screw cap
GB2383995A (en) * 2002-01-11 2003-07-16 Portola Packaging Ltd Closure with pressure release system
AU2003204750B2 (en) * 2002-06-17 2004-11-04 Hollywood Plastics Pty Ltd Container with venting means
EP2319774A1 (en) * 2009-11-05 2011-05-11 Josef Müller Taste-neutral closure for containers
WO2015193971A1 (en) * 2014-06-17 2015-12-23 サントリーホールディングス株式会社 Resin cap

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226935A1 (en) * 1992-08-14 1994-02-17 Berolina Kunststoff Closure cap with elastic seal and safety pressure release - has indentation in inner bearing face of cap connecting with outside air and taking up seal section when pressure in container is too strong.
DE4322522C2 (en) * 1993-07-06 1995-05-11 Honasco Kunststoff Tech Gmbh Closure for a container
DE102006056187B3 (en) * 2006-11-27 2008-02-28 Möller, Lutz Closure element for container, particularly beverage bottle, has stopper and retaining element, which is formed cap-shaped with base plate and adjacent ring, and connected with stopper by connecting element
RU2742151C1 (en) * 2017-08-31 2021-02-02 Бетапак, С.А.У. Lid for containers with increased air tightness

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576917A (en) * 1948-09-30 1951-12-04 Armstrong Cork Co Linerless venting closure
US2990979A (en) * 1959-01-27 1961-07-04 Signal Mfg Co Attachment for floor treating apparatus
US3047177A (en) * 1957-11-07 1962-07-31 Baxter Laboratories Inc Closure system
GB958417A (en) * 1961-11-08 1964-05-21 Metal Box Co Ltd Improvements in or relating to cap closures for containers
GB2013635A (en) * 1978-02-06 1979-08-15 Obrist Albert Closure assembly for containers particularly bottles
EP0316167A2 (en) * 1987-11-11 1989-05-17 Dainippon Ink And Chemicals, Inc. Combination of synthetic resin bottle and closure therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576917A (en) * 1948-09-30 1951-12-04 Armstrong Cork Co Linerless venting closure
US3047177A (en) * 1957-11-07 1962-07-31 Baxter Laboratories Inc Closure system
US2990979A (en) * 1959-01-27 1961-07-04 Signal Mfg Co Attachment for floor treating apparatus
GB958417A (en) * 1961-11-08 1964-05-21 Metal Box Co Ltd Improvements in or relating to cap closures for containers
GB2013635A (en) * 1978-02-06 1979-08-15 Obrist Albert Closure assembly for containers particularly bottles
EP0316167A2 (en) * 1987-11-11 1989-05-17 Dainippon Ink And Chemicals, Inc. Combination of synthetic resin bottle and closure therefor

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241341C1 (en) * 1992-12-08 1993-12-23 Wilhelm Dipl Ing Wazel Closure, in particular bottle closure
US5785196A (en) * 1995-05-31 1998-07-28 Rexam Closures Inc. Closure for a pressurized container
WO1997016356A1 (en) * 1995-10-31 1997-05-09 Safety Cap System Ag Closure for a bottle or the like
US6021912A (en) * 1995-10-31 2000-02-08 Safety Cap Systems Ag Closure for a bottle or the like
US6679395B1 (en) 1998-08-22 2004-01-20 Crown Cork & Seal Technologies Corporation Venting closure
WO2000010888A1 (en) 1998-08-22 2000-03-02 Crown Cork & Seal Technologies Corporation Sealing cap
EP0982234A1 (en) 1998-08-22 2000-03-01 Crown Cork &amp; Seal Technologies Corporation Closure cap
DE19952214A1 (en) * 1999-10-29 2001-05-31 Breuer Hans Werner Cup-shaped screw cap
DE19952214B4 (en) * 1999-10-29 2005-02-10 Henzi-Breuer, Bianca Cup-shaped screw cap
GB2383995A (en) * 2002-01-11 2003-07-16 Portola Packaging Ltd Closure with pressure release system
GB2383995B (en) * 2002-01-11 2005-12-07 Portola Packaging Ltd Closure with pressure release system
US7314146B2 (en) 2002-01-11 2008-01-01 Portola Packaging Limited Closure with pressure release system
AU2003204750B2 (en) * 2002-06-17 2004-11-04 Hollywood Plastics Pty Ltd Container with venting means
EP2319774A1 (en) * 2009-11-05 2011-05-11 Josef Müller Taste-neutral closure for containers
WO2015193971A1 (en) * 2014-06-17 2015-12-23 サントリーホールディングス株式会社 Resin cap
JPWO2015193971A1 (en) * 2014-06-17 2017-04-27 サントリーホールディングス株式会社 Resin cap

Also Published As

Publication number Publication date
DE4119440A1 (en) 1992-03-19
DK0464384T3 (en) 1995-01-23
ATE113548T1 (en) 1994-11-15
DE59103401D1 (en) 1994-12-08
EP0464384B1 (en) 1994-11-02
ES2064809T3 (en) 1995-02-01

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