WO2008112221A1 - Tamper-indicating closure and container - Google Patents

Tamper-indicating closure and container Download PDF

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Publication number
WO2008112221A1
WO2008112221A1 PCT/US2008/003214 US2008003214W WO2008112221A1 WO 2008112221 A1 WO2008112221 A1 WO 2008112221A1 US 2008003214 W US2008003214 W US 2008003214W WO 2008112221 A1 WO2008112221 A1 WO 2008112221A1
Authority
WO
WIPO (PCT)
Prior art keywords
ratchet teeth
neck finish
sets
tamper band
radius
Prior art date
Application number
PCT/US2008/003214
Other languages
French (fr)
Inventor
Frank Flak Jr.
Thomas A. Kozlowski
Scott B. Smith
Kenneth S. Bloom
Original Assignee
Rexam Closure Systems Inc.
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 Rexam Closure Systems Inc. filed Critical Rexam Closure Systems Inc.
Publication of WO2008112221A1 publication Critical patent/WO2008112221A1/en

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 disclosure relates to tamper-indicating closures and packages, and more particularly to a tamper-indicating package having a container with diametrically spaced sets of ratchet teeth on the neck finish and engagement elements on the tamper band of a closure applied to the container neck finish.
  • U.S. patent document 2005/0199574 discloses a tamper-indicating package that includes diametrically spaced sets of external ratchet teeth on the container neck finish.
  • the closure has a tamper band frangibly connected to a closure skirt and a circumferential array of internal engagement elements in the form of flexible resilient wings on the tamper band.
  • the wing-shaped engagement elements engage the ratchet teeth on the container neck finish to prevent rotation of the tamper band with respect to the neck finish so that the tamper band is at least partially severed from the closure skirt upon first removal of the closure from the container neck finish.
  • the tamper band of such a closure can ovalize into the areas between the sets of ratchet teeth on the container neck finish, resulting in uneven separation of the tamper band from the closure skirt. It is a general object of the present disclosure to provide a closure and container package, and to provide a container for such a package, in which such ovalization of the tamper band is prevented to achieve more uniform severing of the tamper band from the closure skirt.
  • a tamper-indicating package in accordance with one aspect of the present disclosure includes a container having a neck finish with at least one external thread segment, at least two angularly spaced sets of external ratchet teeth spaced from the thread segment and a circumferentially extending radial enlargement between the two sets of ratchet teeth.
  • a closure includes a skirt with at least one internal thread segment engaging the external thread segment on the container neck finish, a tamper band frangibly connected to the skirt, and a circumferential array of internal engagement elements on the tamper band for engaging the ratchet teeth on the neck finish to prevent rotation of the tamper band with respect to the ratchet teeth and thereby sever the tamper band from the closure skirt upon first unthreading of the closure from the container neck finish.
  • the circumferentially extending radial enlargement between the sets of ratchet teeth is slidably engaged by the engagement elements on the tamper band to prevent ovalization of the tamper band between the sets of ratchet teeth.
  • FIG. 1 is a partially sectioned fragmentary elevational view of a package in accordance with a first exemplary embodiment of the present disclosure
  • FIG. 2 is a sectional view taken substantially along the line 2-2 in FIG. 1 ;
  • FIG. 3 is a top plan view of the container neck finish in the package of FIGS. 1 and
  • FIG.4 is a fragmentary plan view on an enlarged scale of the portion of FIG. 3 within the area 4;
  • FIG. 5 is a fragmentary sectional view taken substantially along the line 5-5 in FIG. 3;
  • FIG. 6 is a sectional view similar to that of FIG. 2 but illustrating a second exemplary embodiment of the present disclosure;
  • FIG. 7 is a top plan view of the container neck finish in the package of FIG. 6;
  • FIG. 8 is a fragmentary sectional view on an enlarged scale of the portion of FIG. 7 within the area 8; and FIG. 9 is a fragmentary sectional view taken substantially along the line 9-9 in FIG.
  • FIGS. 1-2 illustrate a package 20 in accordance with one exemplary embodiment of the present disclosure as including a closure 22 applied to the neck finish 24 of a container 26.
  • Closure 22 includes a skirt 28 with at least one internal thread segment 30 engaged with at least one external thread segment 32 on container neck finish 24.
  • thread segment is used in its usual broad sense to include both single and multiple threads, and both continuous and discontinuous threads.
  • the bullet-nose geometry of neck finish 24 illustrated in FIGS. 1 and 5 (and the bullet-nose geometry of neck finish 54 in FIG. 9) is merely exemplary.
  • closure 22 is illustrated in FIG. 1 as a multipiece closure, it will be recognized as the description unfolds that the principles of the present disclosure apply equally as well to one-piece closures.
  • a tamper band 34 is frangibly connected to skirt 28, such as by frangible leaders 36.
  • Leaders 36 can be molded into closure 22 and/or formed in a scoring operation performed on skirt 28 after closure 22 is molded.
  • Container neck finish 24 is cylindrical, having a central axis and diametrically spaced sets of ratchet teeth 38. In the exemplary embodiment of FIG. 2, there are five ratchet teeth in each set of ratchet teeth; however, a greater or lesser number of ratchet teeth could be employed.
  • Tamper band 34 surrounds ratchet teeth 38 and has a circumferential array of internal engagement elements 40 for engaging ratchet teeth 38.
  • Engagement elements 40 preferably are flexible resilient wing-shaped engagement elements as disclosed in above-noted U.S.
  • a pair of diametrically spaced circumferentially extending radial enlargements 42 are disposed on neck finish 24 between the respective sets of ratchet teeth 38.
  • Enlargements 42 preferably are identical. As best seen in FIG. 3, enlargements 42 preferably are equally spaced between the sets of ratchet teeth 38.
  • enlargements 42 have smooth convex radially outwardly facing surfaces 44 at varying radius with respect to the axis of container neck finish 24.
  • Surfaces 44 preferably have radii 46 (FIG. 4) offset from the axis of neck finish 24 so that surfaces 44 have uniform radii that are less than the radius of the container neck finish.
  • FIGS. 6-9 illustrate a package 50 that includes a container 52 having a neck finish 54. Elements in FIGS. 6-9 that are identical or similar to corresponding elements in FIGS. 1-5 are indicated by correspondingly identical reference numerals.
  • the primary difference between neck finish 54 in FIGS. 6-9 and neck finish 24 in FIGS. 1 -5 is that neck finish 54 has diametrically spaced enlargements 56 with convex outer surfaces 58 on uniform and equal radii 60 (FIG. 8) that extend from the central axis of the neck finish.
  • outer surfaces 58 of enlargements 56 are at a lesser radius 60 from the axis of the container neck finish than the radius 48 of the outer edges of ratchet teeth 38.
  • Radial enlargements 42,56 are slidably engaged by internal engagement elements 40 on tamper band 34 and prevent ovalization of the tamper band into the arcuate regions between the sets of ratchet teeth 38.
  • the frangible leaders 36 FIG. 1
  • the tamper band 34 to closure skirt 28 are more evenly stressed and the tamper band is held closer to the ratchet teeth on the container neck finish. This in turn promotes simultaneous rupture of the frangible leaders due to shear stress across the widths of the leaders.
  • the increased interference between tamper band 34 and the container neck finish helps retain the tamper band on the container following removal of the closure.
  • the anti-ovalization feature also helps prevent the wings on the tamper band from folding over and simply riding over the ratchet teeth, which would result in removal of the tamper band with the closure skirt rather than frangible separation of the tamper band from the closure skirt.

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

Abstract

A tamper-indicating package includes a container (26 or 52) having a neck finish (24 or 54) with at least one external thread segment (32), at least two angularly spaced sets of external ratchet teeth (38) spaced from the thread segment and a circumferentially extending radial enlargement (42 or 56) between the two sets of ratchet teeth. A closure (22) includes a skirt (28) with at least one internal thread segment (30) engaging the external thread segment on the container neck finish, a tamper band (34) frangibly connected to the skirt, and a circumferential array of internal flexible resilient wing-shaped engagement elements (40) on the tamper band for engaging the ratchet teeth on the neck finish to prevent rotation of the tamper band with respect to the ratchet teeth and thereby sever the tamper band from the closure skirt upon first unthreading of the closure from the container neck finish. The circumferentially extending radial enlargement between the sets of ratchet teeth is slidably engaged by the engagement elements on the tamper band to prevent ovalization of the tamper band between the sets of ratchet teeth.

Description

TAMPER-INDICATING CLOSURE AND CONTAINER
The present disclosure relates to tamper-indicating closures and packages, and more particularly to a tamper-indicating package having a container with diametrically spaced sets of ratchet teeth on the neck finish and engagement elements on the tamper band of a closure applied to the container neck finish. Background and Summary of the Disclosure
U.S. patent document 2005/0199574 discloses a tamper-indicating package that includes diametrically spaced sets of external ratchet teeth on the container neck finish. The closure has a tamper band frangibly connected to a closure skirt and a circumferential array of internal engagement elements in the form of flexible resilient wings on the tamper band. The wing-shaped engagement elements engage the ratchet teeth on the container neck finish to prevent rotation of the tamper band with respect to the neck finish so that the tamper band is at least partially severed from the closure skirt upon first removal of the closure from the container neck finish. However, it has been found that the tamper band of such a closure can ovalize into the areas between the sets of ratchet teeth on the container neck finish, resulting in uneven separation of the tamper band from the closure skirt. It is a general object of the present disclosure to provide a closure and container package, and to provide a container for such a package, in which such ovalization of the tamper band is prevented to achieve more uniform severing of the tamper band from the closure skirt.
The present disclosure embodies a number of aspects that can be implemented separately from or in combination with each other. A tamper-indicating package in accordance with one aspect of the present disclosure includes a container having a neck finish with at least one external thread segment, at least two angularly spaced sets of external ratchet teeth spaced from the thread segment and a circumferentially extending radial enlargement between the two sets of ratchet teeth. A closure includes a skirt with at least one internal thread segment engaging the external thread segment on the container neck finish, a tamper band frangibly connected to the skirt, and a circumferential array of internal engagement elements on the tamper band for engaging the ratchet teeth on the neck finish to prevent rotation of the tamper band with respect to the ratchet teeth and thereby sever the tamper band from the closure skirt upon first unthreading of the closure from the container neck finish. The circumferentially extending radial enlargement between the sets of ratchet teeth is slidably engaged by the engagement elements on the tamper band to prevent ovalization of the tamper band between the sets of ratchet teeth. Brief Description of the Drawings
The disclosure, together with additional objects, features, advantages and aspects thereof, will best be understood from the following description, the appended claims and the accompanying drawings, in which:
FIG. 1 is a partially sectioned fragmentary elevational view of a package in accordance with a first exemplary embodiment of the present disclosure;
FIG. 2 is a sectional view taken substantially along the line 2-2 in FIG. 1 ; FIG. 3 is a top plan view of the container neck finish in the package of FIGS. 1 and FIG.4 is a fragmentary plan view on an enlarged scale of the portion of FIG. 3 within the area 4;
FIG. 5 is a fragmentary sectional view taken substantially along the line 5-5 in FIG. 3; FIG. 6 is a sectional view similar to that of FIG. 2 but illustrating a second exemplary embodiment of the present disclosure;
FIG. 7 is a top plan view of the container neck finish in the package of FIG. 6;
FIG. 8 is a fragmentary sectional view on an enlarged scale of the portion of FIG. 7 within the area 8; and FIG. 9 is a fragmentary sectional view taken substantially along the line 9-9 in FIG.
7. Detailed Description of Preferred Embodiments
FIGS. 1-2 illustrate a package 20 in accordance with one exemplary embodiment of the present disclosure as including a closure 22 applied to the neck finish 24 of a container 26. Closure 22 includes a skirt 28 with at least one internal thread segment 30 engaged with at least one external thread segment 32 on container neck finish 24. (The term "thread segment" is used in its usual broad sense to include both single and multiple threads, and both continuous and discontinuous threads.) The bullet-nose geometry of neck finish 24 illustrated in FIGS. 1 and 5 (and the bullet-nose geometry of neck finish 54 in FIG. 9) is merely exemplary. Although closure 22 is illustrated in FIG. 1 as a multipiece closure, it will be recognized as the description unfolds that the principles of the present disclosure apply equally as well to one-piece closures. A tamper band 34 is frangibly connected to skirt 28, such as by frangible leaders 36. Leaders 36 can be molded into closure 22 and/or formed in a scoring operation performed on skirt 28 after closure 22 is molded. Container neck finish 24 is cylindrical, having a central axis and diametrically spaced sets of ratchet teeth 38. In the exemplary embodiment of FIG. 2, there are five ratchet teeth in each set of ratchet teeth; however, a greater or lesser number of ratchet teeth could be employed. Tamper band 34 surrounds ratchet teeth 38 and has a circumferential array of internal engagement elements 40 for engaging ratchet teeth 38. Engagement elements 40 preferably are flexible resilient wing-shaped engagement elements as disclosed in above-noted U.S. patent document 2005/0199574; however, other engagement element geometries could be employed. Upon first removal of closure 22 from container neck finish 24, engagement elements 40 engage ratchet teeth 38 to prevent rotation of tamper band 34 with respect to neck finish 24. Continued rotation of skirt 28 in the unthreading direction ruptures leaders 36 and thereby severs tamper band 34 from closure skirt 28, which indicates that the package has been opened.
A pair of diametrically spaced circumferentially extending radial enlargements 42 are disposed on neck finish 24 between the respective sets of ratchet teeth 38. Enlargements 42 preferably are identical. As best seen in FIG. 3, enlargements 42 preferably are equally spaced between the sets of ratchet teeth 38. In the embodiment of FIGS. 2-5, enlargements 42 have smooth convex radially outwardly facing surfaces 44 at varying radius with respect to the axis of container neck finish 24. Surfaces 44 preferably have radii 46 (FIG. 4) offset from the axis of neck finish 24 so that surfaces 44 have uniform radii that are less than the radius of the container neck finish. Outer surfaces 44 of enlargements 42 preferably have a maximum radius from the neck finish axis that is equal to the radius 48 of the outer edges of ratchet teeth 38 from the neck finish axis. FIGS. 6-9 illustrate a package 50 that includes a container 52 having a neck finish 54. Elements in FIGS. 6-9 that are identical or similar to corresponding elements in FIGS. 1-5 are indicated by correspondingly identical reference numerals. The primary difference between neck finish 54 in FIGS. 6-9 and neck finish 24 in FIGS. 1 -5 is that neck finish 54 has diametrically spaced enlargements 56 with convex outer surfaces 58 on uniform and equal radii 60 (FIG. 8) that extend from the central axis of the neck finish. As an option in this embodiment, outer surfaces 58 of enlargements 56 are at a lesser radius 60 from the axis of the container neck finish than the radius 48 of the outer edges of ratchet teeth 38.
Radial enlargements 42,56 are slidably engaged by internal engagement elements 40 on tamper band 34 and prevent ovalization of the tamper band into the arcuate regions between the sets of ratchet teeth 38. By preventing ovalization of the tamper band, the frangible leaders 36 (FIG. 1) that connect tamper band 34 to closure skirt 28 are more evenly stressed and the tamper band is held closer to the ratchet teeth on the container neck finish. This in turn promotes simultaneous rupture of the frangible leaders due to shear stress across the widths of the leaders. Furthermore, the increased interference between tamper band 34 and the container neck finish helps retain the tamper band on the container following removal of the closure. The anti-ovalization feature also helps prevent the wings on the tamper band from folding over and simply riding over the ratchet teeth, which would result in removal of the tamper band with the closure skirt rather than frangible separation of the tamper band from the closure skirt. There thus have been disclosed a container neck finish, and a closure and container package including such a neck finish, that fully satisfy all of the objects and aims previously set forth. The disclosure has been presented in conjunction with exemplary embodiments, and additional modifications and variations have been discussed. Other modifications and variations readily will suggest themselves to persons of ordinary skill in the art in view of the foregoing description. The disclosure is intended to embrace all such modifications and variations as fall within the spirit and broad scope of the appended claims.

Claims

Claims
1. A tamper-indicating package that includes: a container (26 or 52) having a neck finish (24 or 54) with at least one external thread segment (32) and at least two angularly spaced sets of external ratchet teeth (38) spaced from said thread segment, and a closure (22) that includes a skirt (28) with at least one internal thread segment (30) engaging said external thread segment on said neck finish, a tamper band (34) frangibly connected to said skirt, and a circumferential array of internal flexible resilient wing-shaped engagement elements (40) on said tamper band engaging said ratchet teeth on said neck finish to prevent rotation of said tamper band with respect to said ratchet teeth and thereby sever said tamper band from said closure skirt upon first unthreading of said closure from said neck finish, characterized in that a circumferentially extending radial enlargement (42 or 56) between said sets of ratchet teeth is slidably engaged by said flexible resilient wing-shaped engagement elements (40) and prevents ovalization of said tamper band (34) between said sets of ratchet teeth (38).
2. The package set forth in claim 1 wherein said neck finish includes two diametrically spaced sets of said ratchet teeth (38) and two diametrically spaced enlargements (42 or 56) respectively disposed between said sets of ratchet teeth.
3. The package set forth in claim 2 wherein said external ratchet teeth (38) have radially outer edges at a first radius from an axis of said neck finish and said enlargements (42 or 56) have outer edges at a maximum second radius from said axis equal to or less than said first radius.
4. The package set forth in claim 1 wherein said circumferentially extending radial enlargement (42 or 56) has a smooth radially outwardly facing external surface (44 or 58).
5. The package set forth in claim 4 wherein said radially outwardly facing external surface (58) is at constant radius from an axis of said neck finish.
6. The package set forth in claim 4 wherein said radially outwardly facing external surface (44) is at varying radius from an axis of said neck finish.
7. A container having a cylindrical neck finish (28 or 54) with a central axis, at least one external thread segment (32) and two angularly spaced sets of external ratchet teeth (38) spaced from said thread segment, characterized in that circumferentially extending radial enlargements (42) are disposed between said two sets of ratchet teeth, said circumferentially extending radial enlargements having smooth radially outwardly facing external surfaces at varying radius from said axis of said neck finish.
8. The container set forth in claim 7 wherein said external ratchet teeth (38) have radially outer edges at a first radius from said axis and said enlargements have radially outer edges at a maximum second radius from said axis equal to or less than said first radius.
PCT/US2008/003214 2007-03-13 2008-03-11 Tamper-indicating closure and container WO2008112221A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/717,523 2007-03-13
US11/717,523 US20080223813A1 (en) 2007-03-13 2007-03-13 Tamper-indicating closure and container

Publications (1)

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WO2008112221A1 true WO2008112221A1 (en) 2008-09-18

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WO (1) WO2008112221A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107031951B (en) * 2017-05-25 2019-01-08 深圳博纳精密给药系统股份有限公司 A kind of anti-down rotation structure and the liquid bottles being made of it
US11059633B2 (en) 2019-10-31 2021-07-13 Cheer Pack North America Flip-top closure for container

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EP0008190A1 (en) * 1978-08-03 1980-02-20 Plysu Limited Pilferproof closure
EP1327588A1 (en) * 2002-01-11 2003-07-16 Portola Packaging Limited Closure with pressure release system
US20050199574A1 (en) * 2004-03-11 2005-09-15 Bloom Kenneth S. Tamper-indicating closure, package and method of manufacture
US20070034590A1 (en) * 2005-08-04 2007-02-15 Hidding Douglas J Bottle with retained ring finish feature
US20070051691A1 (en) * 2005-09-08 2007-03-08 Hidding Douglas J Cap with visible tamper-indicating seal

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US3415403A (en) * 1966-12-14 1968-12-10 Bennett Ind Inc Closure apparatus
US3861550A (en) * 1973-05-21 1975-01-21 Allied Chem Liquid container with perforatable locking closure
BE802220A (en) * 1973-07-16 1973-11-05 Astra Plastique DOUBLE STOPPER CLOSURE FOR VIALS, BOTTLES AND SIMILAR CONTAINERS
US3924769A (en) * 1974-12-20 1975-12-09 Owens Illinois Inc Single use safety closure
US4936474A (en) * 1989-02-24 1990-06-26 Continental White Cap, Inc. Container neck finish configuration for improved tamper evident band breakage upon removal of associated closure
US5975320A (en) * 1990-08-09 1999-11-02 Portola Packaging, Inc. Tamper-evident closures and container neck therefor
US5664694A (en) * 1990-08-09 1997-09-09 Portola Packaging, Inc. Foil lined snap-on, screw-off closure and container neck
US5213224A (en) * 1990-08-09 1993-05-25 Portola Packaging, Inc. Snap-on, screw-off cap and container neck
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
US5560504A (en) * 1993-03-24 1996-10-01 Molinaro; Luca Snap on pull off tamper indicating flexible cap and neck configuration
US5915579A (en) * 1995-02-13 1999-06-29 Mauser Werke Gmbh Container with tamper-evident and pre-lockable closure assembly
US5642825A (en) * 1995-08-21 1997-07-01 Superseal Corporation Container closure having peripheral tamper-indicator
US6044992A (en) * 1998-06-03 2000-04-04 Portola Packaging, Inc. Ratchets for bottle necks
US20070051690A1 (en) * 2005-09-08 2007-03-08 Hidding Douglas J Cap with visible tamper-indicating seal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008190A1 (en) * 1978-08-03 1980-02-20 Plysu Limited Pilferproof closure
EP1327588A1 (en) * 2002-01-11 2003-07-16 Portola Packaging Limited Closure with pressure release system
US20050199574A1 (en) * 2004-03-11 2005-09-15 Bloom Kenneth S. Tamper-indicating closure, package and method of manufacture
US20070034590A1 (en) * 2005-08-04 2007-02-15 Hidding Douglas J Bottle with retained ring finish feature
US20070051691A1 (en) * 2005-09-08 2007-03-08 Hidding Douglas J Cap with visible tamper-indicating seal

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