EP0020522A1 - Capuchon pour recipient a contenu produisant une pression de gaz. - Google Patents

Capuchon pour recipient a contenu produisant une pression de gaz.

Info

Publication number
EP0020522A1
EP0020522A1 EP19790901389 EP79901389A EP0020522A1 EP 0020522 A1 EP0020522 A1 EP 0020522A1 EP 19790901389 EP19790901389 EP 19790901389 EP 79901389 A EP79901389 A EP 79901389A EP 0020522 A1 EP0020522 A1 EP 0020522A1
Authority
EP
European Patent Office
Prior art keywords
sealing lip
closure
container
gas pressure
cap
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
EP19790901389
Other languages
German (de)
English (en)
Other versions
EP0020522B1 (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

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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 that is smaller than the radial extent of each individual sealing lip, the diameter of the free end of each sealing lip being smaller than the outside diameter of the mouth part, so that the sealing lips bend upwards when the closure is placed on the container.
  • each pressure rib works on its own, i.e. functionally there is no connection to the other pressure rib. Because of the powerful design of the pressure ribs, the effort required when putting it on is high; In the filling machines it can therefore happen that the coupling between the screwing device and its drive responds, so that the closures are only partially screwed on. The high expenditure of force when unscrewing the closure, which, in contrast to screwing on by hand, has an even more disadvantageous effect; it is hardly possible to release such a closure.
  • Another closure has sealing lips which are attached both in the lateral section of the closure and to its cap part (the part which rests on the end face of the container mouth). They are all inclined towards a point on the axis of the closure. When putting the fastener on, they can lie on top of each other like scales, as their height is greater than their lateral distance, as mentioned. However, there is a risk that if the sealing lips are not carefully designed, one of them will be of such a height that, when placed on top of one another, it will infiltrate the other over too large an area, so that the sealing lip can no longer rest against the container with sufficient pressure.
  • the sealing lips resting on the front of the container mouths may also prevent the cap from being unscrewed properly, because today's beverage bottles usually only have a thread with a single pitch. If this is not fully used by the closure, the pressure in the container can loosen the closure or even blow it off.
  • bottles are not ideal in terms of their shape.
  • the deviations from the desired shape and the desired dimensions reach a level which 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 weak pressure, and it can even be turned inside out
  • 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 a cross section through the closure s-office
  • FIG. 2 on a larger scale the two sealing lips, and FIG. 3 the two sealing lips when they lie on one another, with another embodiment of the lower sealing lip.
  • Fig. 1 shows the closure 1 while being placed on the mouth part 2 of a container, here a bottle.
  • the closure is shown as a screw closure with an internal thread 3, that with an external thread 4 on the mouth part
  • 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 extent or height. H of each individual sealing lip
  • each sealing lip measured at its tip 11 or 12 is smaller 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 bottle with a sharp edge.
  • 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, from the underside 14 of the upper sealing lip 5 in the non-bent state (denoted by 14 '), but on its second side from the same underside 14 in the bent 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 depends mainly on the inevitable manufacturing tolerances. It is only important that the tip does not reach the top corner 15 of this area.
  • the gas pressure initially propagates radially outward along the cap part 8 and then acts on it from above -6-
  • 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 strongly than the rest and also less strongly than the tip 12 of the sealing lip 6, which is located outside the notch 2 ".
  • the lower deflection means that the contact pressure is also reduced Sealing lip 5 is lower, so that there is a risk that the gas could bend the tip 11 there, or at least move behind it, but this risk is avoided by resting on the more bent sealing lip 6.
  • the tip 12 can be given a more pronounced shape according to FIG. 3.
  • it can have a thickening on its upper side. 16, which the. Underside 14 of the upper sealing lip 5 is adapted 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, such as 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 too.

Landscapes

  • 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.
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 true EP0020522A1 (fr) 1981-01-07
EP0020522B1 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)

Families Citing this family (7)

* 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
DE9316986U1 (de) * 1993-11-06 1994-01-20 Hydac Technology Gmbh, 66280 Sulzbach Abdeckvorrichtung
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
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
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8001061A1 *

Also Published As

Publication number Publication date
AU5286679A (en) 1980-05-29
CA1134781A (fr) 1982-11-02
GB2046721B (en) 1983-03-30
EP0020522B1 (fr) 1982-03-24
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
CH636570A5 (de) 1983-06-15

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