EP0178253B1 - Bouchon à visser en matière plastique - Google Patents

Bouchon à visser en matière plastique Download PDF

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Publication number
EP0178253B1
EP0178253B1 EP85810401A EP85810401A EP0178253B1 EP 0178253 B1 EP0178253 B1 EP 0178253B1 EP 85810401 A EP85810401 A EP 85810401A EP 85810401 A EP85810401 A EP 85810401A EP 0178253 B1 EP0178253 B1 EP 0178253B1
Authority
EP
European Patent Office
Prior art keywords
closure
bottle
rib
base
radius
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 - Lifetime
Application number
EP85810401A
Other languages
German (de)
English (en)
Other versions
EP0178253A1 (fr
Inventor
Alberto Menichetti
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.)
Gebr HOFFMANN AG
Original Assignee
Gebr HOFFMANN AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25685288&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0178253(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gebr HOFFMANN AG filed Critical Gebr HOFFMANN AG
Priority to AT85810401T priority Critical patent/ATE58695T1/de
Publication of EP0178253A1 publication Critical patent/EP0178253A1/fr
Application granted granted Critical
Publication of EP0178253B1 publication Critical patent/EP0178253B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S215/00—Bottles and jars
    • Y10S215/01—Fins

Definitions

  • the invention relates to a screw cap according to the preamble of claim 1.
  • Screw caps with seals resting on the end face of the bottle neck are known.
  • a sealing washer made of soft, rubber-like material is inserted and glued or injected at the bottom of the closure.
  • closures which consist of a single part and whose inner part, preferably between the end of the thread and its flat bottom, has one or more circumferential ribs with different cross sections. Most of the time, such ribs (lips) perform the sealing function in connection with the neck of the container sealed with it.
  • GB-PS 960 443 shows such an embodiment of such closures. With this closure, however, a very clearly pronounced horizontal rib is also arranged between the threaded end and the bottom of the closure. A method for the difficult demolding of the rib is not specified.
  • closures have a flat bottom and are suitable for still contents or for slightly overpressured contents, e.g. Beer, thought. These closures are sufficient for filling goods that are not subjected to pasteurization and / or sterilization in the bottle.
  • GB-PS 925 647 shows an example of another closure and its production method.
  • a disadvantage of this closure is the difficulty in demolding the sealing lip, which requires a special design of the injection mold, and a very precise setting of the production conditions, which of course places a substantial burden on the production costs.
  • An arched base is also known from the abovementioned document.
  • the transition between the floor and the jacket runs at an obtuse angle with a sharp edge.
  • the upper edge of a thin flexible lip lies on the inside opposite the outer edge.
  • the invention has for its object to provide a closure of the type mentioned in the preamble of claim 1, which resists both the increased internal pressure during pasteurization and / or sterilization and the elevated temperature without significant change in shape and ensures a perfect seal.
  • the closure should be designed such that it can be manufactured in a single operation.
  • a simple shape from the injection mold must be provided.
  • the object is achieved according to the invention with the features of claim 1.
  • the arched elliptical or spherical shape of the floor can be dimensioned appropriately compared to a flat floor with a smaller wall thickness are manufactured. This is important for mass articles of this type because of the material savings.
  • the screw cap 1 according to the cross section in FIG. 1 has a closure base 3 and a closure jacket 5 with a thread 7.
  • a circumferential rib in the form of an elastically flexible lip 9 is attached concentrically to the bottom.
  • the average diameter d1 of the lip 9 decreases in the direction of its sealing edge 11.
  • a further rib 13, which runs essentially parallel to the axis of symmetry A of the closure 1, is arranged on the jacket 5 above the end of the thread 7.
  • the lip 9 has a trapezoidal cross-section
  • the rib 13 has a profile adapted to the bottle mouth and enclosing its outer contour, in the example according to FIG. 2 a concave recess 37, which corresponds to the radius at the bottle neck 19.
  • the diameter d2 at the sealing edge 17 of the rib 13 is smaller than the outer diameter d3 of the bottle neck 19 at its upper end 31 (FIG. 2).
  • ribs 21 are attached, which extend radially outwards from the center 30 of the base 3 and can also include the casing 5.
  • the base 3 is curved in the shape of an arc, the radius being equal to or greater than half the diameter d3 of the bottle neck 19.
  • the closure 1 has a radius of curvature.
  • the radii of the transition curve and the bottom can be in a ratio of 1: 2 to 1:10, preferably in a ratio of 1: 4.
  • the closure 1 is screwed onto the threaded neck 25 of a bottle 29.
  • the closure 1 is shown on the left half of FIG. 2 when there is no or only a very slight excess pressure in the bottle 29 with respect to the surroundings; the right half shows the closure 1 as it is caused by the excess pressure and the temperature increase, e.g. when sterilizing, is expanded.
  • the lip 9 rests on the annular end face 33 of the threadless section 35 on the bottle neck 19.
  • the sealing edge 11 is pressed against the center by the clamping force generated when screwing on due to the inclined design of the lip 9.
  • the closure works like the lid of a pressure vessel.
  • the material tension in the bottom is based on the formula Are defined. (p is the internal pressure, D the diameter of the cover and SA its wall thickness). The voltage increases with the quadratic power of the diameter.
  • a flat-bottomed cap must have a wall thickness of 5.3 mm in order to withstand the same internal container pressure as a spherical cap with a wall thickness of 1 mm if the bottle neck has a diameter of 28 mm in accordance with the MC-A standard.
  • the effect of the pressure on the material tensions in the transition between the base and the cylindrical outer shell also varies greatly, whether the base is flat and has an angle of 90s to the shell, or whether it is cambered and has a smooth transition with a large radius.
  • the bottom 3 of the closure 1 rises and the casing 5 widens only by a few tenths of a millimeter.
  • the two lips 9 and 13 remain in contact with the bottle neck 19, and on the other hand the lip 9 is pressed outwards by the increasing internal pressure. This force acting transversely to the lip 9 presses its sealing edge more and more with increasing pressure onto the corresponding contact point, i.e. the end face 33.
  • the lip 9 is designed as a tapering triangle, its fine sealing edge lies on the support point practically without transition.
  • a ring 137 can be molded onto the lower edge of the jacket 5, which ring is separated from the closure 1 when the bottle 29 is opened for the first time and remains on the bottle neck 19 or, if desired, in one or more parts jumps off.
  • the closure 1 can be injection molded in a conventional manner using very simple tools made of plastic materials that have already been tried and tested for bottle closures.

Landscapes

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

Claims (6)

1. Bouchon fileté (1) pour bouteilles, réalisé en matière plastique et comprenant un filetage intérieur (7) et une lèvre d'étanchéité (9) circulaire et élastique, venant s'appliquer axialement sur la face frontale horizontale (33) de la partie filetée (25) du col de bouteille associé (19), bouchon (1) dont le fond (3) et l'enveloppe (5) sont reliés ensemble par une partie arquée (23) et dont le fond (3) est bombé, caractérisé en ce que le rayon de courbure du fond (3) est supérieur ou égal à la moitié du diamètre extérieur (d3) de l'extrémité supérieure du col de bouteille (19) et le rayon de la partie arquée (23) est supérieur à 1/10 du rayon de courbure, en ce qu'une nervure (13), qui s'étend de façon sensiblement parallèle à l'axe de symétrie (A) du bouchon (1) et concentrique à la lèvre d'étanchéité (9), est en outre disposée radialement à l'extérieur par rapport à la lèvre d'étanchéité (9) et possède un profil frontal qui est adapté à celui du bord extérieur de l'embouchure, du col de bouteille (19), sur lequel il est appliqué en position d'utilisation et qui épouse parfaitement ce contour et en ce que la lèvre (9) est inclinée vers l'intérieur et comporte un bord de contact (11) qui est poussé vers le centre par la force produite par le vissage.
2. Bouchon fileté selon la revendication 1, caractérisé en ce que le fond (3) du bouchon (1) complété par les parties arquées (23) a sensiblement la forme d'un ellipsoïde.
3. Bouchon fileté selon la revendication 1, caractérisé en ce que le fond (3) du bouchon (1) complété par les parties arquées (23) a la forme d'une demi-sphère.
4. Bouchon fileté selon l'une des revendications 1 à 3, caractérisé en ce que des nervures de renfort radiales (21) qui se rejoignent au centre (30) sont placées à la face supérieure et extérieure du bouchon (1).
5. Bouchon fileté selon la revendication 4, caractérisé en ce que, vue de profil, la nervure (13) présente un évidement (37) dont le rayon correspond au rayon de l'arrondi extérieur du col de bouteille associé (19).
6. Bouchon fileté selon la revendication 5, caractérisé en ce que le diamètre intérieur (d2) du bord de contact (17) de la nervure (13) est inférieur au diamètre extérieur (d3) de l'extrémité supérieure (31) du col de bouteille associé (19).
EP85810401A 1984-10-05 1985-09-04 Bouchon à visser en matière plastique Expired - Lifetime EP0178253B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810401T ATE58695T1 (de) 1984-10-05 1985-09-04 Schraubverschluss aus kunststoff.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH478884 1984-10-05
CH4788/84 1984-10-05
CH663/85 1985-02-14
CH66385 1985-02-14

Publications (2)

Publication Number Publication Date
EP0178253A1 EP0178253A1 (fr) 1986-04-16
EP0178253B1 true EP0178253B1 (fr) 1990-11-28

Family

ID=25685288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810401A Expired - Lifetime EP0178253B1 (fr) 1984-10-05 1985-09-04 Bouchon à visser en matière plastique

Country Status (4)

Country Link
US (1) US4645088A (fr)
EP (1) EP0178253B1 (fr)
CA (1) CA1249548A (fr)
DE (1) DE3580737D1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726484A (en) * 1986-12-19 1988-02-23 Captive Plastics, Inc. Package employing unique closure seal and container therefor
US4741447A (en) * 1987-04-27 1988-05-03 American National Can Company Linerless cap closure
DE3732112A1 (de) * 1987-09-24 1989-04-13 Pfefferkorn & Co Flaschenverschluss, insbesondere fuer sektflaschen mit schraubgewinde-muendung
US5638972A (en) 1988-06-17 1997-06-17 Druitt; Rodney Malcolm Linerless closure for carbonated beverage container
US4905852A (en) * 1989-05-26 1990-03-06 Zapata Industries, Inc. Plastic closure with improved seal
DE4212141A1 (de) * 1992-04-10 1993-10-14 Juergen Sooth Verschlußdeckel
US5259522A (en) * 1992-08-14 1993-11-09 H-C Industries, Inc. Linerless closure
US5449078A (en) * 1994-07-08 1995-09-12 Thermar Corporation Combination of a container and a safety cap therefor
DE19515687C2 (de) * 1995-04-28 1997-08-28 Helmut Patzelt Verschluß für Gefäße, insbesondere Flaschen
US6427881B1 (en) * 2001-10-09 2002-08-06 Rexam Medical Packaging Inc. Edge seal closure
US20040188375A1 (en) * 2002-07-03 2004-09-30 Fabricas Monterrey, S.A. De C.V. Linerless plastic closure with a sealing lip
DE102004025466B4 (de) * 2004-05-25 2011-07-07 Georg Menshen GmbH & Co. KG, 57413 Verschlusskappe
US7434703B2 (en) * 2004-09-27 2008-10-14 Rexam Prescription Products Inc. Child-resistant tamper-indicating package
US7922017B2 (en) * 2005-05-12 2011-04-12 Rexam Prescription Products Inc. Child-resistant closure, container and package convertible to non-child-resistant operation
FR2899567B1 (fr) * 2006-04-07 2010-08-13 Eaux Minerales D Evian Saeme S Systeme de fermeture pour recipient
DE102007033621B4 (de) * 2007-07-17 2022-06-15 Krones Aktiengesellschaft Kunststoffbehältnis mit Eingriffsnut
WO2020254088A1 (fr) * 2019-06-17 2020-12-24 Unilever N.V. Applicateur d'huile capillaire

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB925647A (en) * 1959-10-12 1963-05-08 Dover Molded Products Company Improvements in or relating to plastic sealing caps and method for the production thereof
GB960443A (en) * 1961-01-13 1964-06-10 Australian Glass Manufacturers Improvements in closures for containers such as bottles
CH607702A5 (en) * 1975-08-18 1978-10-13 Obrist Ag Albert Bottle closure, in particular a screw closure, and process for fastening the closure
FR2339540A1 (fr) * 1976-01-28 1977-08-26 Bouchons Plastiques Perfectionnements aux bouchons a vis
US4269320A (en) * 1978-06-30 1981-05-26 Maxcap, Inc. Blow molded plastic bottle and anti-tamper cap
US4392579A (en) * 1981-10-21 1983-07-12 Owens-Illinois, Inc. Closure with domed portion
US4416383A (en) * 1981-10-29 1983-11-22 Frahm Carl E Closure and sealing device
US4429802A (en) * 1982-05-28 1984-02-07 Anchor Hocking Corporation Linerless closure cap

Also Published As

Publication number Publication date
EP0178253A1 (fr) 1986-04-16
DE3580737D1 (de) 1991-01-10
CA1249548A (fr) 1989-01-31
US4645088A (en) 1987-02-24

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