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WO1997033801A1 - Recipient et assemblage de fermeture de securite - Google Patents

Recipient et assemblage de fermeture de securite Download PDF

Info

Publication number
WO1997033801A1
WO1997033801A1 PCT/GB1997/000613 GB9700613W WO9733801A1 WO 1997033801 A1 WO1997033801 A1 WO 1997033801A1 GB 9700613 W GB9700613 W GB 9700613W WO 9733801 A1 WO9733801 A1 WO 9733801A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure
tamper
container
container neck
evident ring
Prior art date
Application number
PCT/GB1997/000613
Other languages
English (en)
Inventor
Roger Milner King
Witney Milner King
Original Assignee
Beeson And Sons Limited
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 Beeson And Sons Limited filed Critical Beeson And Sons Limited
Priority to AU21002/97A priority Critical patent/AU2100297A/en
Publication of WO1997033801A1 publication Critical patent/WO1997033801A1/fr

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
    • B65D41/32—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
    • B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
    • B65D41/3409—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges
    • 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 present invention relates to improvements in tamper- evident container closure assemblies.
  • it relates to improved container closure assemblies comprising a tamper-evident ring on the closure.
  • container closure assemblies comprising: a container neck having a first screw thread and a retaining lip located below the first screw threads; a closure comprising a base portion and a skirt portion and having a second screw thread on the inside of the skirt portion, the second screw thread cooperating with the first screw thread to retain the closure on the container neck; and a tamper-evident ring severably joined to the skirt portion of the closure and retained below the retaining lip on the container neck when the closure is unscrewed from the container neck for the first time.
  • the separation of the tamper-evident ring from the closure skirt provides a visible indication that the closure has been removed from the container neck at least once.
  • W094/11267 describes container closure assemblies of the above type. These assemblies are characterized by the provision of a tamper-evident ring that a comprises a collar and a plurality of flexible, inwardly projecting retaining tabs on the collar. When the closure and tamper-evident ring are secured onto the container neck for the first time, the flexible tabs flex outwardly to pass over the retaining lip on the container neck without unduly stressing the collar.
  • a longitudinal ratchet rib may be provided on the container neck below the retaining lip.
  • the ratchet rib allows the tamper-evident ring to be screwed onto the container neck, but blocks rotation of the tamper-evident ring in an unscrewing direction by abutment against the inwardly projecting tabs, and thereby further ensures reliable separation of the tamper-evident ring from the closure skirt when the closure is unscrewed for the first time.
  • the present invention provides a container closure assembly comprising a container neck having a first screw thread and a retaining lip located below the first screw thread; a closure comprising a base portion and a skirt portion and having a second screw thread on the inside of the skirt portion, said second thread cooperating with said first thread to retain the closure in a fully secured position on the container neck and to enable the closure to be removed from said fully secured position by unscrewing; and a tamper-evident ring severably joined to the skirt portion of the closure and comprising a circumferential collar and one or more retaining tabs projecting inwardly from the collar for abutment against the retaining lip to retain the tamper-evident ring on the container neck when the closure is removed from said fully secured position for the first time; characterized in that the assembly further comprises at least one pair of side wall elements extending longitudinally on said container neck below the retaining lip, said pair of side wall elements defining a window positioned and dimensioned to receive one of said tabs when the first time
  • one pair of the side wall elements defining one said window is provided for each of the tabs on the tamper-evident ring.
  • the side wall elements each comprise longitudinal ribs projecting from the container neck, and preferably extending from the retaining lip down to a projecting shoulder located below the bottom of the tamper- evident ring.
  • the window defined between the longitudinal ribs is just wide enough to receive one of the retaining tabs.
  • the projecting longitudinal ribs will also tend to obstruct rotation of the tamper- evident ring by abutment against said retaining tabs when the tamper-evident ring is being screwed onto the container neck for the first time.
  • the projecting rib over which the tab of the tamper-evident ring must ride in order to snap fit into the window has a transverse cross-section that is ramped.
  • the surface of the projecting rib has a relatively gentle slope (near-tangential) on the side facing away from the window, and a relatively steep (near- radial) surface facing into the window, the latter surface providing an abutment surface against which the tab abuts when the closure is unscrewed for the first time.
  • the side wall elements are defined by the sides of a window recess formed in the container neck for receiving the tab of the tamper- evident ring.
  • the retaining lip is preferably formed at least on part by the top of the window recess.
  • the window recess is rectangular, and just wide enough to receive one of the retaining tabs.
  • the window recess may also be provided with a projecting lip across its top and/or longitudinal projecting ribs along its sides.
  • a first advantage of the container closure assemblies according to the present invention is that the tamper- evident ring is held in a substantially fixed rotational position relative to the container neck even after it has separated from the closure skirt. This prevents the tamper- evident ring from rattling on the neck, and makes it more difficult to remove the separated tamper-evident ring from the container neck without cutting it. Furthermore, it ensures that any distinctive shape and/or decoration of the tamper-evident ring is always properly aligned with a corresponding shape and/or decoration on the closure when the closure is resecured on the container neck.
  • a further advantage of the assemblies according to the present is that the presence of side wall elements on either side of the flexible tabs on the tamper-evident ring when the tamper-evident ring is secured on the container neck makes it very much more difficult to insert a blade or similar object beneath the flexible tabs to flex them outwards and thereby remove the tamper-evident ring from the container neck without also separating it from the closure skirt.
  • the tabs on the tamper-evident ring can flex outwardly into recesses or gaps provided in the collar of the tamper-evident ring. This enables the tamper-evident ring to be snap-fitted onto the container neck without unduly stressing the collar or the severable connections between the collar and the closure skirt. Details of this preferred feature are given in our International patent application W094/11267, the entire content of which is expressly incorporated herein by reference.
  • the tamper-evident ring is moulded integrally in one piece with the closure.
  • the present invention is especially suitable for use in the container closure assemblies for carbonated beverage containers described and claimed in our International patent application WO95/05322, the entire content of which is expressly incorporated herein by reference.
  • the present invention is also especially useful for use in snap-on, twist-off container closure assemblies for plastic milk bottles and the like.
  • Figure 1 shows side elevation, partially cut away, of a container closure assembly according to the invention with the closure and tamper-evident ring attached thereto fully secured on the container neck;
  • Figure 2 shows part of a cross-section through II-II in the container closure assembly of Figure 1;
  • Figure 3 shows a similar view to Figure l for an alternative embodiment of the present invention.
  • Figure 4 shows a similar fragmentary cross-section as Figure 2 for the embodiment of Figure 3.
  • the container closure assembly comprises a container neck l, a closure 2 and a tamper-evident ring 3.
  • the closure 2 is retained on the container neck 1 by complementary threads on the container neck and the closure skirt.
  • the threads are pressure-safety threads specially adapted for carbonated beverage containers, substantially as described and claimed in our International patent application WO95/05322, the entire content of which is expressly incorporated herein by reference.
  • the container neck 1 is provided with a circumferential retaining lip 4 having a sloped upper surface 5 and a lower abutment surface 6 that extends substantially perpendicular to the longitudinal axis of the assembly.
  • the container neck is also provided with pairs of longitudinal ribs 7,8 extending from the retaining lip 4 downwardly to a shoulder 9 on the container neck.
  • a window 10 is defined between the longitudinal ribs 7,8.
  • the longitudinal rib 7 has a ramped transverse cross section as shown most clearly in Figure 2, the cross-section being made up of a substantially tangential lead-in surface 11 and a substantially radial abutment surface 12 facing the window 10.
  • the rib 8 has substantially radial abutment surfaces on both sides.
  • the tamper-evident ring 3 is moulded integrally in one piece with the closure 2, and is joined thereto by narrow severable bridges 13.
  • the tamper-evident ring 3 comprises a collar 14 and a plurality of integrally formed, inwardly projecting retaining tabs 15.
  • the tabs 15 can flex outwardly into gaps in the collar 14 to enable the tamper- evident ring to be snap fitted over the retaining lip 4 when the closure and tamper-evident ring are fitted onto the container neck for the first time.
  • the operation of the flexible retaining tabs is described and claimed in detail in our International patent application W094/11267, the entire content of which is expressly incorporated herein by reference.
  • the number of windows 10 defined by pairs of longitudinal ribs 7,8 on the container neck is equal to the number of flexible retaining tabs 15 on the tamper-evident ring.
  • the window 10 has a radial extent (width) that it just large enough to receive one of the flexible tabs 15.
  • the closure with the tamper-evident ring attached is screwed onto the container neck.
  • the flexible tabs 15 flex outwardly to snap over the retaining lip 4.
  • the flexible tabs 15 flex outwardly and ride over the lead-in ramp surface 11 on the rib 7 of the container neck.
  • the flexible tabs 15 then snap into the window recesses 10 at the exact position where the closure is fully secured on the container neck.
  • the flexible tabs then substantially fix the rotational position of the tamper-evident ring on the container neck by abutment against the longitudinal ribs 7,8.
  • the flexible tabs 15 abut against the radial abutment surface 12 of the ribs 7, and also against the abutment surface 6 of the retaining lip 4 to block rotational and axial movement of the tamper-evident ring, and thereby achieve reliable separation of the tamper- evident ring from the closure 2.
  • the tamper-evident ring drops down to rest on the shoulder 9 of the container neck, thereby giving a clear visual indication that the container closure assembly has been opened at least once.
  • the alternative embodiment shown in the drawing also comprises a container neck 20, a closure 21 for the container neck 20, and a tamper-evident ring 22.
  • the closure 21 and tamper-evident ring 22 are substantially identical to those in the embodiment of Figures 1 and 2.
  • the container neck 20 has substantially identical threads to those described for the embodiments of Figures 1 and 2.
  • the retaining lip 4 and longitudinal ribs 7,8 of the embodiments of Figures 1 and 2 have been replaced by a cylindrical shoulder 24 having a ramped top edge 25 and extending for at least the height of the tamper-evident ring below the threads.
  • a plurality of window recesses 26 are radially spaced around the shoulder 24. Each recess 26 is just wide enough to receive one of the flexible tabs 15 on the tamper-evident ring, and extends for a sufficient height to allow the tamper-evident to drop down visibly after separation of the tamper-evident ring from the closure.
  • the window recesses are substantially rectangular.
  • the window recesses operate substantially as described above for the windows 10 in the embodiment of Figures 1 and 2.
  • the tamper-evident ring is substantially immobilised against rotational or upward movement, but can drop down once it has separated from the closure when the closure is removed from the container neck for the first time.
  • the provision of window recesses makes it particularly difficult to access the flexible tabs 15 in order to attempt to remove the closure without separation of the tamper-evident ring.
  • the above embodiments are preferably formed from thermoplastic materials by conventional moulding methods.
  • the container necks are formed by blow moulding polyethylene terephthalate or similar materials.
  • the closures and tamper-evident rings are formed integrally in one piece by injection moulding polyethylene or similar materials.

Landscapes

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

Abstract

L'invention porte sur des assemblages de fermeture de récipient constitués par le col du récipient (1, 20) et une fermeture (2, 21) assujettie au col par des vis filetées. Un anneau à indicateur d'effraction (3, 22), rattaché, de façon amovible, à la fermeture, possède des pattes de retenue (15), en saillie vers l'intérieur, destinées à le maintenir sur le col du récipient après que la fermeture a été ôtée pour la première fois. L'invention se caractérise par la présence d'éléments de paroi latérale (7, 8) sur le col, ces éléments délimitant des fenêtres (10, 26) destinées à loger les pattes de retenue (15) individuelles de l'anneau à indicateur d'effraction, ceci afin d'interdire la rotation de l'anneau sur le col du récipient et d'empêcher, grâce aux pattes de retenue (15) souples, toute manipulation.
PCT/GB1997/000613 1996-03-14 1997-03-05 Recipient et assemblage de fermeture de securite WO1997033801A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21002/97A AU2100297A (en) 1996-03-14 1997-03-05 Tamper resistant container and closure assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9605398A GB2311060A (en) 1996-03-14 1996-03-14 Improvements in tamper-evident container closures
GB9605398.8 1996-03-14

Publications (1)

Publication Number Publication Date
WO1997033801A1 true WO1997033801A1 (fr) 1997-09-18

Family

ID=10790400

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/000613 WO1997033801A1 (fr) 1996-03-14 1997-03-05 Recipient et assemblage de fermeture de securite

Country Status (3)

Country Link
AU (1) AU2100297A (fr)
GB (1) GB2311060A (fr)
WO (1) WO1997033801A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6557714B2 (en) * 2001-03-22 2003-05-06 Alcoa Closure Systems International, Inc. Tamper-evident package
US12065295B2 (en) 2021-08-19 2024-08-20 Closure Systems International Inc. One-piece closure
CA3224578A1 (fr) * 2022-01-12 2023-07-20 Marian NOVAK Boitier inviolable
US11970319B2 (en) 2022-05-10 2024-04-30 Closure Systems International Inc. Anti-rotational and removal closure
US11945625B2 (en) 2022-06-24 2024-04-02 Closure Systems International Inc. Package with closure
US11801977B1 (en) 2022-12-02 2023-10-31 Closure Systems International Inc. Package with one-piece closure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747295A1 (de) * 1977-10-21 1979-04-26 Brigitte Vollmer Sicherheitsverschlusskappe fuer behaelter
US4592476A (en) * 1984-06-19 1986-06-03 Japan Crown Cork Co., Ltd. Combination of a container and a closure
US4813561A (en) * 1988-02-29 1989-03-21 Anchor Hocking Corporation Composite retortable closure
US4989740A (en) * 1990-03-07 1991-02-05 Continental White Cap, Inc. Composite cap including tamper indicating feature
WO1994011267A2 (fr) * 1992-11-13 1994-05-26 Beeson And Sons Limited Ameliorations apportees a une bague indicatrice d'effraction pour la fermeture d'un recipient

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027964A (en) * 1989-08-14 1991-07-02 Continental White Cap., Inc. Closure with drop down tamper indicating band and related container finish

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747295A1 (de) * 1977-10-21 1979-04-26 Brigitte Vollmer Sicherheitsverschlusskappe fuer behaelter
US4592476A (en) * 1984-06-19 1986-06-03 Japan Crown Cork Co., Ltd. Combination of a container and a closure
US4813561A (en) * 1988-02-29 1989-03-21 Anchor Hocking Corporation Composite retortable closure
US4989740A (en) * 1990-03-07 1991-02-05 Continental White Cap, Inc. Composite cap including tamper indicating feature
WO1994011267A2 (fr) * 1992-11-13 1994-05-26 Beeson And Sons Limited Ameliorations apportees a une bague indicatrice d'effraction pour la fermeture d'un recipient

Also Published As

Publication number Publication date
GB2311060A (en) 1997-09-17
GB9605398D0 (en) 1996-05-15
AU2100297A (en) 1997-10-01

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