EP0229206A1 - Fermeture pour récipient munie d'une bande de garantie - Google Patents

Fermeture pour récipient munie d'une bande de garantie Download PDF

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Publication number
EP0229206A1
EP0229206A1 EP86100328A EP86100328A EP0229206A1 EP 0229206 A1 EP0229206 A1 EP 0229206A1 EP 86100328 A EP86100328 A EP 86100328A EP 86100328 A EP86100328 A EP 86100328A EP 0229206 A1 EP0229206 A1 EP 0229206A1
Authority
EP
European Patent Office
Prior art keywords
closure
wedge
container
guarantee ring
bead
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.)
Withdrawn
Application number
EP86100328A
Other languages
German (de)
English (en)
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.)
Ewit SA
Original Assignee
Ewit SA
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 Ewit SA filed Critical Ewit SA
Priority to EP86100328A priority Critical patent/EP0229206A1/fr
Publication of EP0229206A1 publication Critical patent/EP0229206A1/fr
Withdrawn legal-status Critical Current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
    • B65D41/32—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
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges

Definitions

  • the invention relates to a closure with a guarantee attached to it for containers which have a muzzle near their mouth, the guarantee ring being connected to the cap of the closure via webs which serve as predetermined tear points.
  • Closures with guarantee rings are increasingly being used to prevent the contents of the container from being partially emptied by unauthorized persons, but later the container is sold as full, because no one has noticed this removal or because the removal can only be determined after close inspection could.
  • closures with guarantee rings those should be considered in which the guarantee ring is connected to the cap of the closure via thin webs on the front side of the part encompassing the container. The guarantee therefore has practically the same diameter as this part.
  • This arrangement is particularly suitable for containers with a so-called mouth bead, because then when the guarantee ring is attached, the guarantee ring is located at the lower edge of this mouth bead, i.e. at a point where this bead of large diameter in the neck of the container smaller diameter passes. The guarantee ring then engages behind the bead so that it is torn off when the lock is lifted.
  • the type of this gripping can practically only be solved properly by making the guarantee ring from heat-shrinkable plastic.
  • the closure is put on and the containers then move through a so-called heat shrink tunnel.
  • the guarantee ring is warmed up by targeted thermal radiation.
  • Its inner diameter, which initially corresponds to that of the bead in order to bring the guarantee ring over the bead at all, is now decreasing; in most cases the guarantee ring lies against the transition point between the bead and the neck of the container or is at most only a very minimal distance.
  • the closure can therefore only be opened for the first time by visible destruction or at least by visible tearing off of the guarantee ring.
  • the invention therefore aims to get rid of heat shrinkage and to create a closure with a guarantee ring which also detects the mouth of the container on the underside, as was previously only possible with heat-shrunk material.
  • a closure with a guarantee ring of the type mentioned at the outset which is characterized by at least one wedge attached to the inside of the guarantee ring and projecting inwards, which forms an angle of less than 90 ° with the inner wall, against the Closure cap is inclined, made of the same material as this and the guarantee ring and is at its free end a radial distance from the axis of rotation of the closure, which is determined such that it is smaller than the largest radius of the muzzle when the closure is placed on the container of the container.
  • the container in general, preferably a beverage bottle, with 2 its mouth, which has a mouth bead 3.
  • its diameter is larger than the container neck 4, so that a transition zone 5 is formed which acts like a constriction.
  • the closure which is preferably made of plastic, has a closure cap 6, which comprises a cap cover 7, in a known manner.
  • a closure cap 6 which comprises a cap cover 7, in a known manner.
  • the bottom section of said part 8, the webs 9 and the inner wall 11 of the guarantee ring 10 the same diameter or the same radial distance from the axis of rotation 12 of the closure.
  • At least one wedge 13 is arranged on the inner wall 11 of the guarantee ring 10. This stands almost, but only almost, at right angles to it; it must have an angle that is less than 90 °, whereby it or its longitudinal center plane 14 is inclined towards the closure cap 6. We will return to this essential detail. An angle of 60 ° has proven to be expedient.
  • the wedge 13 extends along the inner wall 10 in the circumferential direction thereof, its length L being different as required. It can be relatively small, but on the other hand it can also be as large as is technically possible in the injection mold used to produce the closure. In experiments, a length up to 40% of the diameter of the inner wall 10 has proven to be advantageous if only one wedge is present; if more than one, this percentage may be lower.
  • the radius r of the free end 15 of the wedge 13 to the axis 12 is smaller than the largest radius R of the mouth bead 3. Since the containers are standardized and thus also the radii of their mouth beads, this radius r can be below Consideration of the tolerances is predefined fairly precisely and thus also standardized.
  • the free end 15 thus comes to rest under the muzzle bead 3 if the wedge is also mounted at the correct height, ie at the correct distance a from the underside of the cap lid 7. When putting on the lock, the wedge must squeeze past the entire muzzle bead 3 from top to bottom.
  • This static friction can be increased if, according to the embodiment according to FIG. 3, the closure lies even closer to the container mouth, that is to say if the webs 9 rest against the mouth bead 3.
  • the radius of these webs and that of the inner wall 11 thus correspond to the largest radius R of the mouth bead 3, and thus the wedge 13 also has the same radius R where it originates from the inner wall.
  • the wedge 13 then projects further under the mouth bead 3, so that when the closure is removed, the entire static friction, caused by the webs 9 and the wedge 13 abutting the muzzle, tears these webs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP86100328A 1986-01-13 1986-01-13 Fermeture pour récipient munie d'une bande de garantie Withdrawn EP0229206A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP86100328A EP0229206A1 (fr) 1986-01-13 1986-01-13 Fermeture pour récipient munie d'une bande de garantie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86100328A EP0229206A1 (fr) 1986-01-13 1986-01-13 Fermeture pour récipient munie d'une bande de garantie

Publications (1)

Publication Number Publication Date
EP0229206A1 true EP0229206A1 (fr) 1987-07-22

Family

ID=8194824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100328A Withdrawn EP0229206A1 (fr) 1986-01-13 1986-01-13 Fermeture pour récipient munie d'une bande de garantie

Country Status (1)

Country Link
EP (1) EP0229206A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381118A1 (fr) * 1989-01-30 1990-08-08 H-C Industries, Inc. Fermeture de garantie en matière plastique
EP0729894A3 (fr) * 1995-03-03 1997-02-12 Massmould Holdings Dispositif de fermeture
EP1092640A1 (fr) * 1997-10-30 2001-04-18 ZUMBUHL, Bruno Fermeture inviolable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290364A1 (fr) * 1974-11-08 1976-06-04 Astra Plastique Perfectionnements aux dispositifs d'obturation du type inviolable
GB2033350A (en) * 1978-11-07 1980-05-21 Ug Closures & Plastics Ltd Tamperproof closure
US4488655A (en) * 1982-03-15 1984-12-18 Japan Crown Cork Co., Ltd. Plastic closure for containers
EP0146237A1 (fr) * 1983-10-27 1985-06-26 Continental White Cap, Inc. Fermeture présentant une bande d'inviolabilité

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2290364A1 (fr) * 1974-11-08 1976-06-04 Astra Plastique Perfectionnements aux dispositifs d'obturation du type inviolable
GB2033350A (en) * 1978-11-07 1980-05-21 Ug Closures & Plastics Ltd Tamperproof closure
US4488655A (en) * 1982-03-15 1984-12-18 Japan Crown Cork Co., Ltd. Plastic closure for containers
EP0146237A1 (fr) * 1983-10-27 1985-06-26 Continental White Cap, Inc. Fermeture présentant une bande d'inviolabilité

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381118A1 (fr) * 1989-01-30 1990-08-08 H-C Industries, Inc. Fermeture de garantie en matière plastique
EP0729894A3 (fr) * 1995-03-03 1997-02-12 Massmould Holdings Dispositif de fermeture
EP1092640A1 (fr) * 1997-10-30 2001-04-18 ZUMBUHL, Bruno Fermeture inviolable

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Effective date: 19880125

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Inventor name: WIEDMER, WALTER