EP0020522B1 - Capuchon pour recipient a contenu produisant une pression de gaz - Google Patents

Capuchon pour recipient a contenu produisant une pression de gaz Download PDF

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Publication number
EP0020522B1
EP0020522B1 EP19790901389 EP79901389A EP0020522B1 EP 0020522 B1 EP0020522 B1 EP 0020522B1 EP 19790901389 EP19790901389 EP 19790901389 EP 79901389 A EP79901389 A EP 79901389A EP 0020522 B1 EP0020522 B1 EP 0020522B1
Authority
EP
European Patent Office
Prior art keywords
sealing lip
container
gas pressure
closure
sealing
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.)
Expired
Application number
EP19790901389
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German (de)
English (en)
Other versions
EP0020522A1 (fr
Inventor
Walter Wiedmer
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.)
Walter Wiedmar AG Plastikform
Original Assignee
Walter Wiedmar AG Plastikform
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Walter Wiedmar AG Plastikform filed Critical Walter Wiedmar AG Plastikform
Publication of EP0020522A1 publication Critical patent/EP0020522A1/fr
Application granted granted Critical
Publication of EP0020522B1 publication Critical patent/EP0020522B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck

Definitions

  • the invention relates to a closure made of elastic material for containers with a gas pressure-generating content, with two sealing lips attached to its vertical part surrounding the mouth part of the container, which protrude essentially radially inwards and are at a distance from each other which is smaller than the radial extent of each one Sealing lip is, the diameter of the free end of each sealing lip is smaller than the outer diameter of the mouth part, so that the sealing lips bend upwards when the closure is placed on the container.
  • closures are already known from DE-A-2614335.
  • two, in another even three such sealing lips are provided, all of which come to lie against the outside of the container in order to seal there.
  • Similar sealing lips are also known from DE-A-1 482 569 and DE-A-2 726 431. All these sealing lips are designed so that when the closure is placed or screwed onto the mouth part of the container, according to their length upwards, i.e. be bent towards the mouth of the container. If gas forms inside the container and the pressure of this gas increases, liquid is also expelled in addition to the gas. This must first infiltrate the horizontal part of the closure, which lies flat on the mouth surface of the container, before it reaches the sealing lips. There, the co-driven gas, which is still under pressure, generally only presses the sealing lips more firmly against the outer wall of the container because of their bending, so that the sealing effect is increased still further.
  • each sealing lip acts independently of the others with regard to the seal; there is no functional connection between adjacent lips, since they are even deliberately far apart from each other with individual closures. This presupposes that the sealing lips are executed properly. If the manufacturing tolerances are too large, the gas and even the liquid can still escape to the outside between the sealing lips and the outer wall of the container, since the internal thread of the closure and the external thread of the container interacting with it alone cannot guarantee an adequate seal.
  • bottles are also not ideal in terms of their shape.
  • the deviations from the desired shape and the desired dimensions reach a level that always creates new sealing problems.
  • Bottles that are oval in cross-section or have the shape of two compound but halved ring halves are not uncommon. Notches, broken-out parts and other defects also contribute to the fact that even the best sealing lips hang in one or more places along their circumference, so to speak, which greatly reduces their contact pressure locally. If the gas pressure then begins to take effect, this point bends due to its too low contact pressure, and it can even turn inside out. This clears the way for the escaping liquid.
  • a closure of the type mentioned at the beginning, which meets these requirements, is characterized according to the invention by the features of claim 1.
  • Fig. 1 shows the closure 1 while being placed on the mouth part 2 of the container, here a bottle.
  • the closure is shown as a screw closure with an internal thread 3 which interacts with an external thread 4 on the mouth part 2.
  • the closure could just as well be a so-called snap lock, which is pressed over a bead on the edge of the mouth part 2.
  • the two sealing lips 5, 6 are at a distance a from one another, measured from center line 9 to center line 10, which is less than the radial extension or height h of each individual sealing lip 5, 6. Furthermore, the diameter of each sealing lip is measured at its tip 11 or 12, less than that of the mouth part 2 (FIG. 1), any deviations from the nominal diameter having already been taken into account in the latter.
  • the tips 11, 12 are rounded so that they can adapt to their shape when entering a possibly sharp-edged bottle.
  • the sealing lips 5, 6, as shown in FIGS. 2 and 3, are elastically bent upwards, which is done without great effort due to their thin shape. This puts them under pressure against the mouth part 2.
  • the tip 12 of the lower sealing lip 6 projects into an area 13 which on one side of the underside 14 of the upper sealing lip 5 in the non-bent state (designated 14 '), but on its second side from the same underside 14 but continuously State, and is limited on the third side by the mouth part 2.
  • This area 13 is hatched in FIG. 2 and outlined with strong lines. How far the tip 12 extends into this area 13 mainly depends on the inevitable manufacturing tolerances. It is only essential that the tip does not extend to the top corner 15 of this area.
  • the gas pressure initially propagates radially outward along the cap part 8 and then acts on the upper sealing lip 5 from above. This will therefore go downwards, as shown by dash-dotted lines 14 ′′ in FIG. 2. It sits on the tip 12 of the lower sealing lip 6. This also comes into effect and supports the upper sealing lip 5, which is now essential can absorb higher gas pressure, which also causes an even stronger pressing of its tip 11 against the mouth part 2. In this way (as tests have confirmed), a perfect seal is achieved even at very high pressures.
  • This seating of the upper sealing lip 5 on the lower sealing lip 6 also occurs, for example, when the mouth part would have a notch or local indentation 2 'FIG. 2.
  • the part of the tip 11 protruding into this notch is thus bent less than the rest and also less strongly than the tip 12 of the sealing lip 6, which is located outside the notch 2 '. Due to the lower deflection, the contact pressure of the sealing lip 5 is also lower, so that there is a risk that the gas could bend the tip 11 there or at least move behind it. By resting on the more bent sealing lip 6, this danger is avoided.
  • the two sealing lips 5, 6 do not overlap; the lower sealing lip 6 serves, in addition to its function as a second seal, above all as a support for the upper sealing lip 5, so that the two sealing lips actually interact, in contrast to the earlier individual effects of similar sealing lips.
  • the tip 12 can be given a more pronounced shape according to FIG. 3.
  • it can have a thickening 16 on its upper side, which is adapted to the lower side 14 of the upper sealing lip 5 when it is seated in order to be able to better distribute the pressure.
  • the closure shown has not only proven itself for bottles made of glass, but can also be used for those made of plastic, as they have recently come onto the market. Although the plastic of such bottles is softer than that of the closure, the two sealing lips 5, 6 are flexible enough to achieve a perfect seal here as well.

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

Abstract

Le capuchon comprend deux levres d'etancheite (5, 6) dont la longueur (h) est superieure a leur distance mutuelle (a). Lorsqu'on applique le capuchon sur le goulot (2) du recipient, les levres sont facilement pliees vers le haut. L'extremite de la levre inferieure (6) penetre dans un espace (13) qui est delimite par la surface inferieure (14, 14') de la levre (5) avant et apres sa deformation et par la paroi du goulot (2). Lorsqu'il apparait une pression de gaz la levre superieure (5) se comble davantage de telle facon qu'elle s'appuie sur l'extremite (12) de la levre inferieure et qu'elle soit soutenue par elle. Ainsi, on obtient une etancheite parfaite sans qu'il soit necessaire d'exercer un effort trop grand pour devisser le capuchon.

Claims (3)

1. Fermeture en matériau élastique pour les récipients contenant un produit qui dégage une pression gazeuse, comportant deux garnitures d'étanchéité en forme de lèvres (5, 6) disposées sur l'élément vertical entourant l'ouverture ou bouche (2) du récipient, ces lèvres d'étanchéité faisant pour l'essentiel radialement saillie vers l'intérieur et étant écartées l'une de l'autre d'une distance (a) inférieure à l'étendue radiale (h) de chacune des lèvres d'étanchéité, le diamètre de l'extrêmité libre de chaque lèvre d'étanchéité (5, 6) étant plus petit que le diamètre extérieur de la bouche (2), de sorte que les lèvres d'étanchéité (5, 6) se recourbent vers le haut lors de l'application de la fermeture (1) sur le récipient, caractérisée en ce que ladite étendue radiale (h) de la lèvre d'étanchéité inférieure (6) a une grandeur maximum telle que son extrémité libre recourbée (12) sert d'appui à la lèvre d'étanchéité supérieure (5) lorsque cette dernière fléchit sous l'effet de la pression gazeuse à laquelle elle est exposée.
2. Fermeture selon la revendication 1, caractérisée en ce que l'extrêmité libre recourbée (12) de la lèvre d'étanchéité inférieure se trouve dans un espace (13) délimité d'un côté par la surface (14') de la lèvre d'étanchéité supérieure (5) à l'état non incurvé, d'un autre côté par cette même surface inférieure (14) mais à l'état incurvé, et d'un troisième côté par la paroi de la bouche (2) du récipient.
3. Fermeture selon la revendication 1 ou 2, caractérisée en ce que, au moins la surface supérieure de l'extrêmité libre (12) de la lèvre d'étanchéité inférieure (6), présente une forme (16) adaptée au côté inférieur (14) de la lèvre d'étanchéité supérieure (5).
EP19790901389 1978-11-23 1980-06-03 Capuchon pour recipient a contenu produisant une pression de gaz Expired EP0020522B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1203778A CH636570A5 (de) 1978-11-23 1978-11-23 Verschluss aus elastischem material an einem behaelter mit gasdruckerzeugendem inhalt.
CH12037/78 1978-11-23

Publications (2)

Publication Number Publication Date
EP0020522A1 EP0020522A1 (fr) 1981-01-07
EP0020522B1 true EP0020522B1 (fr) 1982-03-24

Family

ID=4379253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790901389 Expired EP0020522B1 (fr) 1978-11-23 1980-06-03 Capuchon pour recipient a contenu produisant une pression de gaz

Country Status (9)

Country Link
EP (1) EP0020522B1 (fr)
AU (1) AU5286679A (fr)
BE (1) BE880203A (fr)
CA (1) CA1134781A (fr)
CH (1) CH636570A5 (fr)
DE (1) DE2953337D2 (fr)
GB (1) GB2046721B (fr)
NL (1) NL7920113A (fr)
WO (1) WO1980001061A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9316986U1 (de) * 1993-11-06 1994-01-20 Hydac Technology Gmbh, 66280 Sulzbach Abdeckvorrichtung
CN104058160A (zh) * 2014-06-11 2014-09-24 东莞特宏塑胶五金有限公司 一种硅胶瓶盖

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4917269A (en) * 1989-05-10 1990-04-17 Owens-Illinois Closure Inc. Liquid containing and dispensing package
DE4301306C2 (de) * 1993-01-20 1995-12-21 Alcoa Gmbh Verpackwerke Kunststoffverschluß
US5785196A (en) * 1995-05-31 1998-07-28 Rexam Closures Inc. Closure for a pressurized container
DE102010028522A1 (de) * 2010-05-04 2011-11-10 Robert Bosch Gmbh Schraubverschluss für Weichverpackungen
WO2022184222A1 (fr) * 2021-03-02 2022-09-09 Aptar Freyung Gmbh Ensemble distributeur par le bas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1482569A1 (de) * 1965-07-01 1969-06-19 Hopf A Metallwerke Kg Schraubkappenverschluss
LU74665A1 (fr) * 1975-04-07 1977-01-28
DE2708714A1 (de) * 1977-03-01 1978-09-07 Roppelt Guenter Dipl Braumstr Schraubverschluss fuer behaelter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9316986U1 (de) * 1993-11-06 1994-01-20 Hydac Technology Gmbh, 66280 Sulzbach Abdeckvorrichtung
CN104058160A (zh) * 2014-06-11 2014-09-24 东莞特宏塑胶五金有限公司 一种硅胶瓶盖

Also Published As

Publication number Publication date
AU5286679A (en) 1980-05-29
CA1134781A (fr) 1982-11-02
GB2046721B (en) 1983-03-30
WO1980001061A1 (fr) 1980-05-29
BE880203A (fr) 1980-03-17
GB2046721A (en) 1980-11-19
NL7920113A (nl) 1980-09-30
DE2953337D2 (en) 1981-02-26
EP0020522A1 (fr) 1981-01-07
CH636570A5 (de) 1983-06-15

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