EP0537246B1 - Closure for a bottle or the like - Google Patents

Closure for a bottle or the like Download PDF

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Publication number
EP0537246B1
EP0537246B1 EP91912512A EP91912512A EP0537246B1 EP 0537246 B1 EP0537246 B1 EP 0537246B1 EP 91912512 A EP91912512 A EP 91912512A EP 91912512 A EP91912512 A EP 91912512A EP 0537246 B1 EP0537246 B1 EP 0537246B1
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EP
European Patent Office
Prior art keywords
sealing
bottle
seal
sealing part
closure
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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.)
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EP91912512A
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German (de)
French (fr)
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EP0537246A1 (en
Inventor
Michael Dr. Hertrampf
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Individual
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Individual
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Priority to EP94106369A priority Critical patent/EP0620164B1/en
Publication of EP0537246A1 publication Critical patent/EP0537246A1/en
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Priority to GR960402828T priority patent/GR3021473T3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/50—Making screw caps
    • 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
    • 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 of the type mentioned in the preamble of claim 1 for a bottle or the like.
  • a closure in which, in addition to the radial sealing face on the end face, axial sealing faces are provided in the region of the mouth edge of a bottle, into which the sealing compound of the seal extends.
  • the sealing part is deep-drawn and extends around the mouth of the bottle so as to form the outer, axial sealing surface.
  • the essence of this known closure should consist in the fact that the sealing part, at least in a partial area at the transition from the sealing part to the holding part, is not deep-drawn down to the lateral mouth edge of the neck of the bottle, but is rather excluded from such a deformation. In this way, a reduced sealing distance is to be created in the undeformed partial area, which, due to its brevity, should result in less tightness.
  • a closure for a bottle or the like which has a cap-shaped holding part on which there is an inwardly directed projection or collar for engaging behind an outer bead of a bottle neck.
  • This holding part is connected via an elastic element to a sealing part with an annular sealing surface for contact with an end face of the bottle neck.
  • the holding part has a stop for the defined contact of the holding part on the edge of the bottle neck. Since the sealing part also abuts the edge of the bottle neck, the mutual position of the holding part and the sealing part is precisely defined. Since the elastic element for prestressing the sealing part is located between the two, the size of the prestressing of the elastic element is also precisely defined and thus the pressure at which the sealing part lifts off, that is to say opens the pressure relief valve.
  • the inside of the bottle for example a beverage liquid
  • a screw cap for a bottle or the like in the bottom of which a seal is arranged which consists of three layers, namely a back layer and a front layer running parallel to it and spaced parallel to it, which via a flexible intermediate layer in Shape of wavy and sloping supports are kept at a distance from each other. Due to their shape, these supports give the overall seal compressibility. Due to this compressibility, excess pressure can escape from the bottle if it is large enough to compress the seal and thus lift it off the front edge of the bottle neck. The opening pressure therefore depends on the compression of the resilient seal, which in turn depends on the screwing torque. There is thus no independence of the opening pressure from the screwing torque, which can be very different, especially when screwing on by hand. This means that the risk of bottles bursting and thus the risk of injury is not avoided.
  • the invention has for its object to provide a closure of the type in question, which is simple in construction and largely reliably independent of the screwing torque opens at a predetermined pressure.
  • the invention frees itself from the known idea of pressing the sealing part as a whole against the mouth of the bottle neck via an elastic element. Rather, the basic idea of the invention is to create a seal, stop and elastic element only by the design of the seal.
  • the seal has a constant thickness and consists of material of different compressibility over the circumference.
  • the locations of low compressibility form stops, while the locations of greater compressibility can stand out at a predetermined overpressure, so that an overpressure is formed.
  • the material of the seal can have cavities, in particular bubbles, at some points, as a result of which foam is practically formed at these points.
  • the material of the holding and sealing part can be any, for. B. plastic or metal. It can be a screw or crown closure or any other closure.
  • a holding part 1 and a sealing part 2 together form a screw cap, for which purpose threads 3 are provided in the holding part 1, with which the holding part 1 can be screwed onto bead-shaped threads 4 of a bottle neck 5 of a bottle 6, which is only partially shown.
  • Holding part 1 and sealing part 2 are deep-drawn and / or pressed from aluminum, as is generally the case with screw closures of this type.
  • the sealing part 2 In its edge area, the sealing part 2 has a flat, annular sealing surface 7, between which and one End face of the bottle neck 5 there is a seal 8, which has the same cross-section, that is to say the same thickness over the circumference.
  • this seal 8 has three areas 9, 10 and 11, which have a lower, preferably substantially less compressibility than a central area 12. These areas 9, 10 and 11 thus act as stops and determine the compression of the central region 12 of the seal 8 in the region of the sealing surface. At these points, the material of the seal can therefore lift off the sealing support at a certain excess pressure and thus allow excess pressure to escape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Glass Compositions (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Closing Of Containers (AREA)

Abstract

A method for producing a closure for a bottle which has a holding part (16), a sealing part (17), and a seal made of compressible material which is arranged between the annular sealing surface of the sealing part and an annular end face of the bottle neck (20) and, in the closed state, rests both against the sealing surface of the sealing part (17) and against the end face of the bottle neck (20) in the circumferential direction with different contact pressure. The method is characterised in that a sealing disc (18) made of compressible material is inserted into a cap, forming the holding part (16) and sealing part (17), with a flat sealing surface of the sealing part (17) and made of a deformable metal, in that the cap is fitted with the sealing disc (18) onto the bottle neck (20), in that a pressing ram (21) is pressed from the outside against the sealing part (17) of the cap, which pressing ram has on its end face projections (24) arranged spaced apart in the circumferential direction so that the sealing part (17) is deformed only at the points on these projections (24) in the direction towards the end face of the bottle neck (20) so that the seal is compressed to a lesser extent in the region of the non-deformed parts. <IMAGE>

Description

Die Erfindung betrifft einen Verschluß der im Oberbegriff des Anspruchs 1 genannten Art für eine Flasche oder dergleichen.The invention relates to a closure of the type mentioned in the preamble of claim 1 for a bottle or the like.

Durch DE-C-36 42 998 ist ein Verschluß bekannt, bei dem zusätzlich zu der radialen, stirnseitigen Dichtfläche axiale Dichtflächen im Bereich des Mündungsrandes einer Flasche vorgesehen sind, in die sich Dichtmasse der Dichtung erstreckt. Das Dichtteil ist tiefgezogen und erstreckt sich um den Mündungsrand der Flasche herum, um so die äußere, axiale Dichtfläche zu bilden. Das Wesentliche dieses bekannten Verschlusses soll darin bestehen, daß das Dichtteil wenigstens in einem Teilberich am Übergang von dem Dichtteil zu dem Halteteil nicht bis auf den seitlichen Mündungsrand des Halses der Flasche tiefgezogen ist, vielmehr von einer derartigen Verformung ausgenommen ist. Auf diese Weise soll in dem unverformten Teilbereich eine verminderte Dichtstrecke geschaffen sein, die aufgrund ihrer Kürze zu einer geringeren Dichtigkeit führen soll. Auf diese Weise soll ein Entweichen von Überdruck begünstigt werden. Das Entweichen von Überdruck ist bei einem derartigen Verschluß jedoch weniger von der Dichtstrecke als vielmehr von dem Auflagedruck der Dichtung abhängig. Dieser ist jedoch bei diesem bekannten Verschluß über den gesamten Mündungsrand gleich. Die gewünschte Wirkung eines Überdruckventils wird daher nur sehr unvollkommen erreicht.From DE-C-36 42 998 a closure is known in which, in addition to the radial sealing face on the end face, axial sealing faces are provided in the region of the mouth edge of a bottle, into which the sealing compound of the seal extends. The sealing part is deep-drawn and extends around the mouth of the bottle so as to form the outer, axial sealing surface. The essence of this known closure should consist in the fact that the sealing part, at least in a partial area at the transition from the sealing part to the holding part, is not deep-drawn down to the lateral mouth edge of the neck of the bottle, but is rather excluded from such a deformation. In this way, a reduced sealing distance is to be created in the undeformed partial area, which, due to its brevity, should result in less tightness. In this way, the escape of excess pressure is to be promoted. With such a closure, the escape of excess pressure is less dependent on the sealing section than on the contact pressure of the seal. However, this is the same with this known closure over the entire mouth edge. The desired effect of a pressure relief valve is therefore only very incompletely achieved.

Durch die DE-C-37 44 292 ist ein Verschluß für eine Flasche oder dergleichen bekannt, der einen kappenförmigen Halteteil aufweist, an dem sich ein nach innen gerichteter Vorsprung oder Kragen zum Hintergreifen eines Außenwulstes eines Flaschenhalses befindet. Dieses Halteteil ist über ein elastisches Element mit einem Dichtteil mit einer ringförmigen Dichtfläche zur Anlage an einer Stirnfläche des Flaschenhalses verbunden. Das Halteteil weist einen Anschlag zur definierten Anlage des Halteteils an dem Rand des Flaschenhalses auf. Da das Dichtteil ebenfalls an dem Rand des Flaschenhalses anliegt, ist dadurch die gegenseitige Lage von Halteteil und Dichtteil genau definiert. Da sich zwischen beiden das elastische Element zur Vorspannung des Dichtteils befindet, ist damit auch die Größe der Vorspannung des elastischen Elements genau definiert und damit der Druck, bei dem das Dichtteil abhebt, das Überdruckventil also öffnet.From DE-C-37 44 292 a closure for a bottle or the like is known which has a cap-shaped holding part on which there is an inwardly directed projection or collar for engaging behind an outer bead of a bottle neck. This holding part is connected via an elastic element to a sealing part with an annular sealing surface for contact with an end face of the bottle neck. The holding part has a stop for the defined contact of the holding part on the edge of the bottle neck. Since the sealing part also abuts the edge of the bottle neck, the mutual position of the holding part and the sealing part is precisely defined. Since the elastic element for prestressing the sealing part is located between the two, the size of the prestressing of the elastic element is also precisely defined and thus the pressure at which the sealing part lifts off, that is to say opens the pressure relief valve.

Durch die US-A-40 89 434 ist ein Schraubverschluß der im Oberbegriff des Anspruchs 1 genannten Art bekannt, bei dem zwischen dem Boden der Schraubkappe und dem Stirnrand des Flaschenhalses eine Dichtung aus Schaumstoff liegt, die in ihrem Querschnitt in einer diametralen Richtung unterschiedliche Dicken hat. Beim Aufschrauben werden also die Bereiche größerer Dicke stärker zusammengepreßt als die Bereiche geringerer Dicke. In den Bereichen geringerer Dicke ist daher die Dichtkraft geringer, und diese Bereiche sollen als Überdruckventil dienen. Der Öffnungsdruck hängt dabei von der Kompression der gesamten Dichtung ab, ist somit nicht unabhängig vom Aufschraubdrehmoment. Erfolgt das Aufschrauben mit zu geringem Drehmoment, so sind die Bereiche geringerer Dicke nicht zur Anlage gebracht, die Dichtung ist nicht dicht. Wird die Dichtung mit zu großer Kraft aufgeschraubt, so ist die Anlagekraft auch im Bereich der geringeren Dicke zu groß, so daß entsprechend auch der Öffnungsdruck zu groß ist und die Gefahr einer Explosion der Flasche nach sich zieht. Hinzu kommt der besondere Nachteil, daß der größte Teil des Drehmoments beim Aufschrauben auf das Zusammendrücken der Bereiche der Dichtung großer Dicke entfällt, zumal deren Fläche wesentlich größer ist als die Fläche der Bereiche geringerer Dicke, so daß der erhöhte Anstieg des Drehmoments durch die zusätzliche Zusammendrückung im Bereich der Stellen geringerer Dicke der Dichtung kaum feststellbar ist, insbesondere nicht dann, wenn das Aufschrauben von Hand erfolgt. Das Aufschrauben von Hand ist aber im praktischen Gebrauch der Normalfall und entscheidend. Die Gefahr von Explosionen besteht also im Normalfall weiterhin.From US-A-40 89 434 a screw cap of the type mentioned in the preamble of claim 1 is known, in which between the bottom of the screw cap and the front edge of the bottle neck is a seal made of foam, which has different thicknesses in its cross section in a diametrical direction Has. When screwing on, the areas of greater thickness are thus pressed together more than the areas of reduced thickness. The sealing force is therefore less in the areas of reduced thickness, and these areas are intended to serve as a pressure relief valve. The opening pressure depends on the compression of the entire seal and is therefore not independent of the screwing torque. If the screwing is done with too little torque, the areas of reduced thickness are not brought into contact, the seal is not tight. If the seal is screwed on with too much force, the contact force is also too great in the area of the smaller thickness, so that the opening pressure is correspondingly too great and the risk of Explosion of the bottle results. In addition, there is the particular disadvantage that most of the torque when screwing is due to the compression of the areas of the gasket of large thickness, especially since their area is substantially larger than the area of the areas of lesser thickness, so that the increased increase in torque due to the additional compression is hardly noticeable in the area of thinner seal thickness, especially not when screwing on by hand. However, screwing on by hand is the normal case in practical use and is decisive. The danger of explosions therefore normally continues to exist.

Durch die DE-A-1 432 224 ist eine Entlüftungsdichtung für einen Verschluß ähnlich der zuvor behandelten US-A-3 114 467 sowie der DE-U-8 122 918 O 1 sind kappenförmige Verschlüsse mit Überdrucksicherungen bekannt, bei denen jeweils im Boden eine ebene Dichtscheibe angeordnet ist, hinter der sich an einigen Umfangsstellen Ausnehmungen befinden. Ist eine solche Kappe auf den Hals einer Flasche aufgeschraubt und entsteht ein Druck in der Flasche, so hebt sich der Rand der scheibenförmigen Dichtung an den Stellen, an denen sich die Ausnehmungen im Boden der Kappe befinden, etwas an, so daß Überdruck entweichen kann. Ein Nachteil dieser bekannten Schraubverschlüsse besteht darin, daß im Bereich der Ausnehmungen im Boden der Schraubkappen überhaupt keine Anpreßung des Randes der Dichtscheibe an den Stirnrand des Flaschenhalses erfolgt. Das Innere der Flasche, beispielsweise eine Getränkeflüssigkeit, kann daher schon bei geringsten überdrücken aus der Flasche entweichen, was nicht erwünscht ist. Außerdem besteht der Nachteil, daß gerade bei Glasflaschen durch die herstellungsbedingten Toleranzen oder bei Verunreinigungen auf der Stirnfläche des Flaschenrandes bzw. auf der Dichtung eine Dichtanlage der Dichtung an der Stirnfläche des Flaschenhalses unmöglich ist.From DE-A-1 432 224 a vent seal for a closure similar to the previously treated US-A-3 114 467 and DE-U-8 122 918 O 1 cap-shaped closures with overpressure protection are known, in each of which one in the bottom flat sealing washer is arranged, behind which there are recesses at some circumferential locations. If such a cap is screwed onto the neck of a bottle and there is pressure in the bottle, the edge of the disc-shaped seal rises slightly at the points where the recesses are in the bottom of the cap, so that excess pressure can escape. A disadvantage of these known screw closures is that in the area of the recesses in the bottom of the screw caps there is no pressing of the edge of the sealing disk against the end edge of the bottle neck. The inside of the bottle, for example a beverage liquid, can therefore escape from the bottle at the slightest overpressure, which is not desirable. There is also the disadvantage that, especially in the case of glass bottles, due to the manufacturing tolerances or in the event of contamination on the end face of the bottle rim or on the seal, sealing of the seal on the end face of the bottle neck is impossible is.

Durch US-A-2 542 741 ist ein Schraubverschluß für eine Flasche oder dergleichen bekannt, in dessen Boden eine Dichtung angeordnet ist, die aus drei Schichten besteht, nämlich einer Rückenschicht und einer im Abstand parallel dazu verlaufenden Frontschicht, die über eine nachgiebige Zwischenschicht in Form wellenförmig und schräg verlaufender Stützen im Abstand zueinander gehalten sind. Diese Stützen verleihen aufgrund ihrer Formgebung der Gesamtdichtung eine Zusammendrückbarkeit. Aufgrund dieser Zusammendrückbarkeit kann Überdruck aus der Flasche entweichen, wenn dieser groß genug ist, um die Dichtung zusammenzudrücken und so von der Stirnkante des Flaschenhalses abzuheben. Der Öffnungsdruck hängt somit von der Zusammendrückung der nachgiebigen Dichtung ab, und diese hängt wiederum von dem Aufschraubdrehmoment ab. Damit besteht keine Unabhängigkeit des Öffnungsdruckes von dem Aufschraubdrehmoment, das insbesondere bei Aufschrauben von Hand sehr unterschiedlich sein kann. Damit ist die Gefahr eines Platzens von Flaschen und damit die Gefahr von Verletzungen nicht vermieden.From US-A-2 542 741 a screw cap for a bottle or the like is known, in the bottom of which a seal is arranged which consists of three layers, namely a back layer and a front layer running parallel to it and spaced parallel to it, which via a flexible intermediate layer in Shape of wavy and sloping supports are kept at a distance from each other. Due to their shape, these supports give the overall seal compressibility. Due to this compressibility, excess pressure can escape from the bottle if it is large enough to compress the seal and thus lift it off the front edge of the bottle neck. The opening pressure therefore depends on the compression of the resilient seal, which in turn depends on the screwing torque. There is thus no independence of the opening pressure from the screwing torque, which can be very different, especially when screwing on by hand. This means that the risk of bottles bursting and thus the risk of injury is not avoided.

Der Erfindung liegt die Aufgabe zugrunde, einen Verschluß der betreffenden Art zu schaffen, der einfach im Aufbau ist und weitgehend unabhängig vom Aufschraubdrehmoment zuverlässig bei vorgegebenem Überdruck öffnet.The invention has for its object to provide a closure of the type in question, which is simple in construction and largely reliably independent of the screwing torque opens at a predetermined pressure.

Die der Erfindung Zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The object underlying the invention is achieved by the teaching specified in the characterizing part of claim 1.

Die Erfindung löst sich von dem bekannten Gedanken, das Dichtteil als Ganzes über ein elastisches Element gegen die Mündung des Flaschenhalses zu drücken. Grundgedanke der Erfindung ist es vielmehr, Dichtung, Anschlag und elastisches Element nur durch die Gestaltung der Dichtung zu schaffen.The invention frees itself from the known idea of pressing the sealing part as a whole against the mouth of the bottle neck via an elastic element. Rather, the basic idea of the invention is to create a seal, stop and elastic element only by the design of the seal.

Gemäß der im Anspruch 1 angegebenen allgemeinen Lehre hat die Dichtung eine konstante Dicke und besteht über den Umfang aus Material unterschiedlicher Zusammendrückbarkeit. Die Stellen geringer Zusammendrückbarkeit bilden Anschläge, während die Stellen größerer Zusammendrückbarkeit sich bei einem vorbestimmten Überdruck abheben können, so daß ein Überdruck gebildet ist. Beispielsweise kann das Material der Dichtung an einigen Stellen Hohlräume, insbesondere Bläschen, aufweisen, wodurch an diesen Stellen praktisch Schaumstoff gebildet ist. In allen Ausführungsformen der Erfindung ist es möglich, an der der dichtfläche abgewandten Seite der Dichtung Ausnehmungen vorzusehen, die die leichtere Zusammendrückbarkeit bewirken.According to the general teaching given in claim 1 the seal has a constant thickness and consists of material of different compressibility over the circumference. The locations of low compressibility form stops, while the locations of greater compressibility can stand out at a predetermined overpressure, so that an overpressure is formed. For example, the material of the seal can have cavities, in particular bubbles, at some points, as a result of which foam is practically formed at these points. In all embodiments of the invention, it is possible to provide recesses on the side of the seal facing away from the sealing surface, which provide easier compressibility.

Das Material des Halte- und Dichtteils kann beliebig sein, z. B. Kunststoff oder Metall. Es kann sich um einen Schraub- oder Kronenverschluß oder jeden beliebigen anderen Verschluß handeln.The material of the holding and sealing part can be any, for. B. plastic or metal. It can be a screw or crown closure or any other closure.

Anhand der Zeichnung soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden.

Fig. 1
zeigt eine Auführungsform des Grundgedankens der Erfindung im Schnitt,
Fig. 2
zeigt eine Draufsicht auf die Dichtung in Fig. 1.
The invention will be explained in more detail using an exemplary embodiment with reference to the drawing.
Fig. 1
shows an embodiment of the basic idea of the invention in section,
Fig. 2
shows a plan view of the seal in Fig. 1st

In den Fig. 1 und 2 bilden ein Halteteil 1 und ein Dichtteil 2 zusammen eine Schraubkappe, wozu in dem Halteteil 1 Gewindegänge 3 vorgesehen sind, mit denen das Halteteil 1 auf wulstförmige Gewindegänge 4 eines Flaschenhalses 5 einer nur teilweise dargestellten Flasche 6 aufschraubbar ist. Halteteil 1 und Dichtteil 2 sind aus Aluminium tiefgezogen und/oder gedrückt, wie das allgemein bei derartigen Schraubverschlüssen üblich ist.1 and 2, a holding part 1 and a sealing part 2 together form a screw cap, for which purpose threads 3 are provided in the holding part 1, with which the holding part 1 can be screwed onto bead-shaped threads 4 of a bottle neck 5 of a bottle 6, which is only partially shown. Holding part 1 and sealing part 2 are deep-drawn and / or pressed from aluminum, as is generally the case with screw closures of this type.

In seinem Randbereich weist das Dichtteil 2 eine ebene, ringförmige Dichtfläche 7 auf, zwischen der und einer Stirnfläche des Flaschenhalses 5 sich eine Dichtung 8 befindet, die gleichen Querschnitt, also über den Umfang gleiche Dicke, hat. Diese Dichtung 8 weist jedoch, wie das aus der Draufsicht auf die Dichtung in Fig. 2 ersichtlich ist, drei Bereiche 9, 10 und 11 auf, die eine geringere, vorzugsweise wesentlich geringere Zusammendrückbarkeit haben als ein mittlerer Bereich 12. Diese Bereiche 9, 10 und 11 wirken somit als Anschläge und bestimmen die Zusammendrückung des mittleren Bereichs 12 der Dichtung 8 im Bereich der Dichtfläche. An diesen Stellen kann das Material der Dichtung daher bei einem bestimmten Überdruck von der Dichtauflage abheben und somit Überdruck entweichen lassen.In its edge area, the sealing part 2 has a flat, annular sealing surface 7, between which and one End face of the bottle neck 5 there is a seal 8, which has the same cross-section, that is to say the same thickness over the circumference. However, as can be seen from the top view of the seal in FIG. 2, this seal 8 has three areas 9, 10 and 11, which have a lower, preferably substantially less compressibility than a central area 12. These areas 9, 10 and 11 thus act as stops and determine the compression of the central region 12 of the seal 8 in the region of the sealing surface. At these points, the material of the seal can therefore lift off the sealing support at a certain excess pressure and thus allow excess pressure to escape.

Claims (2)

  1. A closure for a bottle or the like, having a holding part which exhibits an inwards directed projection or collar for engaging behind a bead on the outside of the neck of a bottle, having a sealing part which is connected to the holding part and exhibits an essentially annular sealing area, and having a seal of compressible material and of constant thickness, arranged between the annular endface of the neck of the bottle and in the closed state resting with differing contact pressure in the circumferential direction both against the sealing area of the sealing part and against the endface of the neck of the bottle, characterized in that the seal exhibits at at least one place along the circumference a material of lighter compressibility.
  2. A closure as in Claim 1, characterized in that the lighter compressibility is created through cavities or recesses on the side of the seal remote from the sealing area.
EP91912512A 1990-07-12 1991-07-10 Closure for a bottle or the like Expired - Lifetime EP0537246B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP94106369A EP0620164B1 (en) 1990-07-12 1991-07-10 Method for producing a closure for bottles or the like
GR960402828T GR3021473T3 (en) 1990-07-12 1996-10-24 Method for producing a closure for bottles or the like.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4022196 1990-07-12
DE4022196 1990-07-12
PCT/EP1991/001283 WO1992000892A1 (en) 1990-07-12 1991-07-10 Closure for a bottle or the like and process for manufacturing it

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP94106369.5 Division-Into 1994-04-23

Publications (2)

Publication Number Publication Date
EP0537246A1 EP0537246A1 (en) 1993-04-21
EP0537246B1 true EP0537246B1 (en) 1994-12-28

Family

ID=6410150

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94106369A Expired - Lifetime EP0620164B1 (en) 1990-07-12 1991-07-10 Method for producing a closure for bottles or the like
EP91912512A Expired - Lifetime EP0537246B1 (en) 1990-07-12 1991-07-10 Closure for a bottle or the like

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP94106369A Expired - Lifetime EP0620164B1 (en) 1990-07-12 1991-07-10 Method for producing a closure for bottles or the like

Country Status (8)

Country Link
EP (2) EP0620164B1 (en)
AT (2) ATE140908T1 (en)
CA (1) CA2086836A1 (en)
DE (4) DE4122783C2 (en)
DK (2) DK0537246T3 (en)
ES (2) ES2068596T3 (en)
GR (2) GR3015549T3 (en)
WO (1) WO1992000892A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9306747A (en) * 1992-07-18 1998-12-08 Procter & Gamble Vent cover and application for a container
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.
DE4234010A1 (en) * 1992-10-09 1994-04-14 Hertrampf Michael Closure for a bottle or the like
KR100838602B1 (en) * 2007-04-06 2008-06-16 인중종합건설(주) A method of construction to pour concrete of scrapped water pipes for being replaced the water pipes become superannuated
EP2435196B1 (en) 2009-05-26 2014-01-22 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Embossing method and apparatus
IT1394418B1 (en) * 2009-05-26 2012-06-15 Sacmi METHOD AND EMBOSSING EQUIPMENT
EP2279809A1 (en) * 2009-07-31 2011-02-02 Tecnocap S.p.A. Cap and process for forming the same
EP3045434A1 (en) 2015-01-15 2016-07-20 Vetropack Holding AG Bottle closure mouth with ventilation access
DE102020107420A1 (en) 2020-03-18 2021-09-23 Grohe Ag Device with an opening that can be closed by a cover

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032931A (en) * 1932-04-09 1936-03-03 Anchor Cap & Closure Corp Closure cap and package
FR851275A (en) * 1938-09-10 1940-01-05 Catonnet A Improvements to sealing capsules
US2514124A (en) * 1947-11-20 1950-07-04 Gutmann & Co Ferd Receptacle closure
US2542741A (en) * 1949-03-26 1951-02-20 Armstrong Cork Co Vent-type bottle closure
US3114467A (en) * 1961-08-23 1963-12-17 Bernardin Bottle Cap Company I Self-venting bottle cap
US3181720A (en) * 1962-07-05 1965-05-04 Armour & Co Pressure or vacuum release closure for a container or the like
DE1432224A1 (en) * 1962-07-23 1968-11-21 Patton Franklin Seville Vent seal for a closure
GB1022664A (en) * 1963-05-10 1966-03-16 Dale Ltd John Self venting sealing element
GB1084564A (en) * 1965-02-17 1967-09-27 Metal Box Co Ltd Improvements in or relating to sealing con tainers
US3443713A (en) * 1966-12-21 1969-05-13 John Kosar Cornered blanks for closure caps,liners,washers,etc.,plus method of blanking and forming the blanks and utilizing the corners thereof
US3967746A (en) * 1975-04-28 1976-07-06 Botkin Albert L Canning closure and method
US4089434A (en) * 1976-12-10 1978-05-16 Seling Sealing Products, Inc. Venting liner
DE8122918U1 (en) * 1981-08-04 1981-10-22 Unilever N.V., Rotterdam Childproof closure
DE8608897U1 (en) * 1986-04-03 1986-09-25 Henkel KGaA, 4000 Düsseldorf Container for gassing products
DE8608896U1 (en) * 1986-04-03 1986-09-25 Henkel KGaA, 4000 Düsseldorf Closure cap of a product container
DE3642998C1 (en) * 1986-12-17 1988-05-19 Haist Verpackung Beratung Deep-drawn aluminum screw cap for glass bottles under internal pressure and deep-drawing device for a closure head for the manufacture of such screw caps
DE3744292A1 (en) * 1987-02-12 1988-08-25 Hertrampf Michael Closure for a bottle or the like

Also Published As

Publication number Publication date
DK0620164T3 (en) 1996-12-30
GR3021473T3 (en) 1997-01-31
CA2086836A1 (en) 1992-01-13
DE4122783A1 (en) 1992-01-16
DK0537246T3 (en) 1995-06-12
EP0537246A1 (en) 1993-04-21
DE9108494U1 (en) 1991-10-02
ES2068596T3 (en) 1995-04-16
DE59104085D1 (en) 1995-02-09
DE4122783C2 (en) 2001-06-21
ATE140908T1 (en) 1996-08-15
ATE116249T1 (en) 1995-01-15
EP0620164A1 (en) 1994-10-19
DE59108056D1 (en) 1996-09-05
WO1992000892A1 (en) 1992-01-23
GR3015549T3 (en) 1995-06-30
EP0620164B1 (en) 1996-07-31
ES2092352T3 (en) 1996-11-16

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