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WO1998016436A1 - Fermeture indicatrice d'effraction - Google Patents

Fermeture indicatrice d'effraction Download PDF

Info

Publication number
WO1998016436A1
WO1998016436A1 PCT/AU1997/000694 AU9700694W WO9816436A1 WO 1998016436 A1 WO1998016436 A1 WO 1998016436A1 AU 9700694 W AU9700694 W AU 9700694W WO 9816436 A1 WO9816436 A1 WO 9816436A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
closure
protrusions
tamper band
motion control
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.)
Ceased
Application number
PCT/AU1997/000694
Other languages
English (en)
Inventor
Michael Verter
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.)
GV Engineering Pty Ltd
Original Assignee
GV Engineering Pty Ltd
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 GV Engineering Pty Ltd filed Critical GV Engineering Pty Ltd
Priority to AU45444/97A priority Critical patent/AU4544497A/en
Priority to NZ335185A priority patent/NZ335185A/xx
Publication of WO1998016436A1 publication Critical patent/WO1998016436A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B65D41/32—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

Definitions

  • the present invention relates to a tamper evident closure and in particular to an internally threaded plastic closure having an annular tamper band frangibly connected thereto.
  • thermoplastic internally threaded closure having an annular tamper band therebeneath.
  • the tamper band is typically connected to the lower portion of a skirt integral with the closure and is typically provided with internally directed teeth adapted to lock against externally directed teeth on a container during the unscrewing operation (although not during the initial running up of the closure onto the container).
  • the interference of the two sets of teeth during the unscrewing operation causes fracture of the membrane or bridges joining the skirt of the closure to the annular tamper evident band thereby permanently separating the two components and evidencing the opening of the container.
  • annular tamper band is usually a nuisance after initial removal of the closure as it is not restrained on the container or the closure. Inversion of the container therefore results in the dropping of the tamper band into the product being dispensed or in many cases pollution of the environment.
  • thermoplastic closure of the type having an internally threaded skirt depending from an upper sealing disk; an annular tamper band affixed to the closure adjacent the lower extremity of the skirt by frangible joining means; two or more radially inwardly directed protrusions on the tamper band; the protrusions being adapted to interact with an axial motion control protrusion on a container neck and rotational motion control protrusions on a container neck; the interaction between the protrusions on the tamper band and the rotational motion control protrusions on the container being such that upon running up of the closure onto the container the protrusions readily ride over each other thereby facilitating the closure being folly run up onto the container; the interaction of the protrusions upon unscrewing of the closure from the container however preventing greater than one-half turn rotation of the closure relative to the container thereby ensuring that further attempted relative rotation between the closure and the container fractures the frangible joining means between the tamper band and the closure;
  • Figure 1 is a perspective view of a closure in accordance with the present invention.
  • Figure 2 is a part side elevation of a container in accordance with the present invention
  • Figure 3 is a part section through A- A' of the closure of figure 1 and B- B' of the container of figure 2.
  • thermoplastic closure 1 having an annular skirt portion 2 depending therefrom; the skirt portion 2 containing internal threads 3.
  • skirt 2 contains frangible web portions 5 for the purpose of joining the skirt 2 to annular tamper band 6.
  • Annular tamper band 6 is provided with four sets of internally directed teeth 7 approximately ninety degrees removed from each other about the internal circumference of the tamper band.
  • teeth 7 are all angled in one direction in order that one side thereof presents a ramp portion 8 whereas the opposite side thereof presents an undercut face 9. It will also be observed that the teeth are chamfered along their lower edges 10 adjacent their radially innermost extremities 11.
  • Teeth 7 are intended to interact with teeth 12 extending radially outwardly from the lower portion of the neck 13 of container 14 as is best viewed from figure 2.
  • the orientation of complementary teeth 7 and 12 is such that during the running up of the closure and attached tamper band onto the container for the first time teeth 7 and 12 do not lock against each other but merely ride over each other due to ramped surfaces 8 and 15 overriding each other.
  • the container neck 13 is also provided with an annular externally directed bead 17 extending for three hundred and sixty degrees about the container neck and in this embodiment such bead also serves to brace the top of teeth 12.
  • This bead 17 is provided with an upper ramped surface 18 but a substantially horizontal surface 19 therebeneath forming an included angle of ninety degrees or less with the vertical container neck therebeneath.
  • the profile of bead 17 occasioned by surfaces 18 and 19 is intended to permit teeth 7 to be urged down ramped portion 18 over the bead during the initial running up of the closure and tamper band onto the container.
  • the chamfered surface 10 of the teeth 7 also assists this motion despite the fact that the inner extremities 11 of teeth 7 extend radially inwardly to a position radially inward of the radially outermost extremity 20 of bead 17.
  • closures of over forty-five millimetres diameter and particularly those of approximately seventy millimetres diameter it has been found that there is usually sufficient elasticity in the closure, tamper band and internally directed protrusion such that the tamper band protrusion or protrusions may be worked up over the bead on the container without separation of the tamper evident band from the closure thereby defeating the tamper evident feature.
  • bead 17 and the profile of surfaces 21 and 10 associated with teeth 7 of the present invention is not to achieve severance of the tamper band from the container due to tension in the frangible web portions 5 but rather fracture of frangible web portions 5 is occasioned by shear forces occasioned due to interaction of teeth 7 with teeth 12 during rotation of the closure relative to the container.
  • Bead 17 merely retains the tamper band on the container in order to prevent pollution of the environment or the contents being dispensed from the container.
  • alternate embodiments apart from those above described may be devised without departing from the scope and intendment of the present invention.
  • the profile, number and location of teeth 7 and 12 may be revised from the configuration depicted.

Landscapes

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

Abstract

Cette invention se rapporte à une fermeture thermoplastique du type comportant une jupe à filetage interne (2) partant d'un disque de fermeture étanche supérieur (1), ainsi qu'une bande d'ouverture annulaire indicatrice d'effraction (6) fixée à la fermeture à proximité adjacente de l'extrémité inférieure de la jupe par un moyen d'assemblage cassable (5). Des dents dirigées radialement vers l'intérieur (7) situées sur la bande d'ouverture indicatrice d'effraction coopèrent avec une nervure annulaire dirigée vers l'extérieur (17) située sur le goulot du récipient et également avec des dents dirigées radialement vers l'extérieur (12) situées sur le col se trouvant sous la nervure. L'interaction entre les dents (7) situées sur la bande d'ouverture indicatrice d'effraction et les dents (12) situées sur le récipient est telle que, lors de l'installation de la fermeture sur le récipient, ces dents se chevauchent rapidement, facilitant ainsi l'installation complète de la fermeture sur le récipient. L'interaction des dents lors du dévissage de la fermeture du récipient empêche toute rotation de la fermeture par rapport au récipient, de sorte que toute tentative ultérieure de rotation relative entre la fermeture et le récipient entraîne la cassure du moyen d'assemblage cassable entre la bande d'ouverture indicatrice d'effraction et la fermeture. Les profils des dents (7) situées sur la bande indicatrice d'effraction et de la nervure (17) située sur le récipients sont telles que les dents (7) chevauchent immédiatement la nervure (17) lors du mouvement axial de la fermeture par rapport au récipient dans la direction nécessaire à l'installation de la fermeture sur le récipient, mais ces profils se gênent les uns les autres lors de toute tentative de retrait de la fermeture du récipient, de sorte que, après cassure du moyen d'assemblage cassable en raison du mouvement de rotation, la bande d'ouverture indicatrice d'effraction ne peut pas se déplacer axialement vers le haut par rapport au récipient mais reste plutôt captive autour du col du récipient.
PCT/AU1997/000694 1996-10-15 1997-10-15 Fermeture indicatrice d'effraction Ceased WO1998016436A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU45444/97A AU4544497A (en) 1996-10-15 1997-10-15 Tamper evident closure
NZ335185A NZ335185A (en) 1996-10-15 1997-10-15 Tamper evident closure, tamper band retained on container neck after removal of closure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUP02971 1996-10-15
AUPO2971A AUPO297196A0 (en) 1996-10-15 1996-10-15 Tamper evident closure

Publications (1)

Publication Number Publication Date
WO1998016436A1 true WO1998016436A1 (fr) 1998-04-23

Family

ID=3797280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1997/000694 Ceased WO1998016436A1 (fr) 1996-10-15 1997-10-15 Fermeture indicatrice d'effraction

Country Status (3)

Country Link
AU (1) AUPO297196A0 (fr)
NZ (1) NZ335185A (fr)
WO (1) WO1998016436A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1930248A1 (fr) * 2006-12-07 2008-06-11 Hosokawa Yoko Co., Ltd. Unité de verseur anti-sabotage et sac incorporant l'unité de verseur
CN103298730A (zh) * 2010-11-09 2013-09-11 普坦内里德库平股份有限公司 具有安全机构的小桶封闭件
WO2021099310A3 (fr) * 2019-11-20 2021-07-15 Alpla Werke Alwin Lehner Gmbh & Co. Kg Fermeture de récipient

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1198383A (en) * 1982-03-09 1983-09-15 Guala S.P.A. Security closure
US4489843A (en) * 1983-03-17 1984-12-25 Captive Plastics, Inc. Tamper-evident closure and container
AU3903785A (en) * 1984-02-24 1985-09-05 Guala S.P.A. Closure for bottles
US4572388A (en) * 1985-03-18 1986-02-25 Sunbeam Plastics Corporation Tamper indicating screw cap
AU2841492A (en) * 1991-11-15 1993-05-20 Marcel Van Ryn Containers and closures
AU5430994A (en) * 1992-11-13 1994-06-08 Beeson And Sons Limited Improvements relating to a tamper evident ring for a container closure
US5346082A (en) * 1992-06-12 1994-09-13 Anchor Hocking Packaging Co. Composite closure with sealing force indicating means and ratchet operated tamper indicating band
DE4404070A1 (de) * 1994-02-09 1995-08-10 Stolz Heinrich Gmbh Schraubkappe für einen Behälterstutzen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1198383A (en) * 1982-03-09 1983-09-15 Guala S.P.A. Security closure
US4489843A (en) * 1983-03-17 1984-12-25 Captive Plastics, Inc. Tamper-evident closure and container
AU3903785A (en) * 1984-02-24 1985-09-05 Guala S.P.A. Closure for bottles
US4572388A (en) * 1985-03-18 1986-02-25 Sunbeam Plastics Corporation Tamper indicating screw cap
AU2841492A (en) * 1991-11-15 1993-05-20 Marcel Van Ryn Containers and closures
US5346082A (en) * 1992-06-12 1994-09-13 Anchor Hocking Packaging Co. Composite closure with sealing force indicating means and ratchet operated tamper indicating band
AU5430994A (en) * 1992-11-13 1994-06-08 Beeson And Sons Limited Improvements relating to a tamper evident ring for a container closure
DE4404070A1 (de) * 1994-02-09 1995-08-10 Stolz Heinrich Gmbh Schraubkappe für einen Behälterstutzen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1930248A1 (fr) * 2006-12-07 2008-06-11 Hosokawa Yoko Co., Ltd. Unité de verseur anti-sabotage et sac incorporant l'unité de verseur
US7753233B2 (en) 2006-12-07 2010-07-13 Hosokawa Yoko Co., Ltd. Spout unit and bag using the same
CN103298730A (zh) * 2010-11-09 2013-09-11 普坦内里德库平股份有限公司 具有安全机构的小桶封闭件
CN103298730B (zh) * 2010-11-09 2015-09-16 普坦内里德库平股份有限公司 具有安全机构的小桶封闭件
WO2021099310A3 (fr) * 2019-11-20 2021-07-15 Alpla Werke Alwin Lehner Gmbh & Co. Kg Fermeture de récipient
US12297010B2 (en) 2019-11-20 2025-05-13 Alpla Werke Alwin Lehner Gmbh & Co. Kg Container closure

Also Published As

Publication number Publication date
AUPO297196A0 (en) 1996-11-07
NZ335185A (en) 1999-08-30

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