WO2008028220A1 - Tamper evident closure and container neck with inner ridge - Google Patents

Tamper evident closure and container neck with inner ridge Download PDF

Info

Publication number
WO2008028220A1
WO2008028220A1 PCT/AU2007/001286 AU2007001286W WO2008028220A1 WO 2008028220 A1 WO2008028220 A1 WO 2008028220A1 AU 2007001286 W AU2007001286 W AU 2007001286W WO 2008028220 A1 WO2008028220 A1 WO 2008028220A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure
container
neck
skirt
annular
Prior art date
Application number
PCT/AU2007/001286
Other languages
French (fr)
Inventor
Christopher Lyndon Higgins
Original Assignee
Ctech Closures 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
Priority claimed from AU2006904829A external-priority patent/AU2006904829A0/en
Application filed by Ctech Closures Pty Ltd filed Critical Ctech Closures Pty Ltd
Publication of WO2008028220A1 publication Critical patent/WO2008028220A1/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
    • B65D41/02—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
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck

Definitions

  • the present invention relates to closures for containers, and more particularly to tamper-evident closures for containers and including tamper evident dispensing 5 closures and tamper evident child resistant closures together with corresponding container necks .
  • Containers having a generally annular orifice and annular neck portion further shaped to co-operate with corresponding sealing closure weans including threads and 25 sealing means are used in the packaging of household consumables including liquid and dry goods. Said containers are often manufactured by means whereby a mould consisting on more than one portion is used to shape said containers.
  • Said mould often leaves on the outer surface of said container a surface irregularity or
  • Said mould may also have a pin to form the inner surface or bore of a container neck and said bore of said container neck is generally parallel with the axis of said neck or said bore is tapered slightly to allow withdrawal of said bore forming pin after forming said bore in said container neck.
  • Said surface irregularity may occur on the neck of said container and at and or adjacent to the outer surface of said neck and including neck sealing surfaces where corresponding sealing closure means sealingly abut said neck sealing surfaces.
  • corresponding sealing closure means incur the additional cost of inserting at least a compressible disc or wad inserted into said closure after manufacture of said closure .
  • Said compressible disc or wad is designed to overcome the problem of said surface irregularities so that upon application of said closure to said container said wad is compressed between the closure and said neck sealing surfaces and said wad sealingly deforms around said surface irregularities thereby forming a seal between closure and container.
  • said compressible disc or wad increases the cost of the closure and increases the quantity of waste material per used container
  • sealing means such as a deformable or compressible annular projection from the inside surface of a closure sealingly engaging with at least one area of said corresponding neck sealing surfaces are also known,
  • the aforementioned sealing means have an undesirable aspect especially in respect of closures attached by thread means to a corresponding threaded container and said closure having tamper evidence means whereby upon removal rotation to unscrew said closure from said container said corresponding sealing closure means are moved away from said neck sealing surfaces such that sealing engagement is lost before said tamper evidence means operate,
  • a metal foil disc such as an aluminium disc with a surface coating of heat activated adherent material may replace said compressible wad or be inserted into said closure with said compressible wad and said metal foil disc is sealingly affixed to said container neck by application of heating means such as by induced electric current.
  • heating means such as by induced electric current.
  • a further problem in prior art closures and containers is that an effective seal between closure and corresponding container relies on the neck of the container having a smooth annular surface whereby said smooth annular surface sealingly engages with a corresponding annular sealing means on a closure,
  • Extrusion blow moulded containers typically made in a mould having 2 parts exhibit a mould parting line blemish on the moulded container and container neck where the 2 halves of said mould abut.
  • Said blemish is typically a ridge of plastic raised above the level of the rest of the adjacent container surfaces and including the areas which are intended as sealing surfaces .
  • In extrusion blow moulded containers typically require the use of a flexible plastic disc or similar means interposed between closure and container neck whereby when said closure is fully applied to said container neck said flexible plastic disc deforms over said raised ridge and thereby said flexible plastic disc provides a sealing means between closure and container neck.
  • the addition of said flexible plastic disc to a closure assembly increases the total cost of said closure. It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.
  • One aspect of the present invention deals especially with the need for a proper relationship between sealing means and tamper-evidence means such that the tarnper- evicten.ce means operates prior to the seal being breached. This avoids the possibility apparent with many so-called tamper-evident closures whereby by malicious tampering or inappropriate application torque and/or relaxation of the closure causing the seal between closure and container neck to be breached without the tamper- evidettce means operating and allowing the contents to be degraded by action of atmosphere or the malicious introduction of contaminants, Another aspect of the present invention is a means to at least improve sealing cooperation between closures and containers without the need for a foil or compressible wad and or to improve sealing co-operation between closures and containers so that seal between closure and container neck is not lost until after tamper evidence means has been activated.
  • the present invention is a container preferably formed by extrusion blow molding or injection blow moulding from one or more types of polyolef ⁇ n materials and a closure having tamper evidence means and said closure also preferably formed from one or more types of polyolefin materials and said container neck has an annular projection or ridge adjacent to the uppermost surface of said container neck said annular ridge extending inwards towards the axis of said container neck and said closure having a corresponding annular projection adapted to seali ⁇ gly engage with said annular projection or ridges on said container neck such that upon manipulation to remove said closure from said container neck said sealing engagement is maintained until at least said tamper evidence means operates to indicate that said closure has been manipulated to effect removal of said closure from said container neck.
  • S Fig, 1 shows a cross sectional elevation of a container neck and a corresponding closure according to a preferred embodiment of- the present invention
  • Fig. 2 is an enlarged view of that portion of a cross sectional elevation of a container neck and a corresponding closure circled with dotted line and marked 'A' in Fig.1 showing a preferred embodiment of a container neck and corresponding closure;
  • Fig. 3 is an enlarged view of that portion of a cross sectional elevation of a container neck and a corresponding closure circled with dotted line arid marked 'A' in Fig.1 and showing another embodiment of the present invention co-operating sealing means between a closure 100 and a container neck, 200 ;
  • Fig. 4 is an enlarged view of that portion of a cross sectional elevation5 of a container neck 200 and a corresponding closure 100 circled with dotted line and marked 'A' in Fig.l and showing yet another preferred relationship between cooperating sealing means on closurelOO and neck 200;
  • Fig. 1 shows a cross sectional elevation of a container neck 200 and a corresponding closure 100 said closure having an annular disc forming top wall 105 said top wall having outer or upper surface 105A and inner surface 105B and depending from said top wall 105 a skirt wall 110 said skirt wall 110 having an inner surface 111 and5 thread means 1 12 projecting ftom said inner surface and an annular sealing projection • 130 which is formed to sealingly engage with corresponding container neck 200 and said container neck 200 having a neck wall 210 having an outer neck surface 216 and an inner neck surface 218 and thread means 215 projecting from said outer surface said thread means formed to co-operate with said thread means 112 of closure 100 to0 threadingly engage and retain said closure 100 on said neck 200 and annular sealing projection and or sealing surface and or neck sealing ring 224 projecting from said inner neck surface 218 towards the axis of said neok and said annular ring 224 formed to co-operate with said annular sealing projection 130 of said closure 100 to sealingly engage with said closure
  • Said uniform surface of said moulding device enabling the creation of a sealing surface on said container neck which is free from surface irregularities which would otherwise prevent proper sealing engagement between said container neck and said closure.
  • said neck of said container is formed by extrusion Wow moulding and or injection blow moulding.
  • Fig. 2 is an enlarged view of that portion of a cross sectional elevation of a container neck 200 and a corresponding closure 100 circled with dotted line and marked 'A* in Fig. T and showing a preferred relationship between co-operating sealing means on closure 100 and neck 200 whereby said annular sealing projection 130 on closure 100 is preferably formed with an inner annular surface 134 located closer to the axis of the closure than outer annular surface 138 said outer annular surface 138 extending between areal38A and area 14OA whereby the diameter of said sealing projection 130 at area 140A is greater than the diameter at area 138A and adjoining and connected to said outer annular surface 138 is outer annular surface 140 extending between area 140A and area 140B and formed such that the diameter of said outer annular surface 140 is the same and forming a cylindrical surface parallel to the axis of said closure or if said diameters vary so as to form one or more annular sealing surfaces other than a cylindrical surface then such difference in diameters still allows for such interference required in fit to effect a sealing engagement
  • Said distance 'C being at least equal to the axial distance closure 100 moves relative to container neck 200 upon removal rotation of said closure 100 prior to operation of tamper evidence means (tamper evidence means not shown) such that sufficient of said annular sealing surface 140 is in sealing engagement with said container neck 200 to keep the container sealed until tamper evidence means on said closure has operated to show that the container has been un-sealed and connected to said outer annular surface 140 is outer annular surface 145 forming annular channel 145 A said channel 145 A spaced apart from said inner surface 105B towards said outer surface 105 A ;
  • said container neck 200 having annular sealing surface 224 which is preferably spaced apart from inner neck surface 218 by a distance 'E' and said distance 'E' being such that annular surface 140 of closure 100 is spaced apart from and does not interfere with inner surface 218 and annular sealing surface 224 is preferably formed; at a diameter providing an interference fit with annular surface 140 of annular sealing projection 130 of closure 100 and such interference preferably being less than distance 'B' whereby upon removal rotation to remove said closure from said container neck said annular sealing surface 224 remains in sealing engagement with said annular surface 140 of closure 100 to seal the container, until tamper evidence means on said closure has operated to show thai the container has been un-sealed.
  • Fig. 3 is an enlarged view of that portion of a cross sectional elevation of a container neck 200 and a corresponding closure 100 circled with dotted Jitie arid marked 'A' in Fig.l and showing an alternate preferred relationship between co-operating sealing means on closure 100 and neck 200 to that relationship shown in Fig. 2 and whereby said annular sealing surface 224 on container neck 200 is formed with a curved shape such that sealing projection 130 on closure 100 makes annular sealing contact at the point on said annular sealing surface 224 which is closest to the axis of said container neck.
  • Fig, 4 is an enlarged view of that portion of a cross sectional elevation of a container neck 200 and a corresponding closure 100 circled with dotted line and marked 'A' in Fig.1 and showing yet another alternate preferred relationship between co-operating sealing means on closurelOO and neck 200 to that relationship shown in Fig. 2 and Fig, 3 and whereby said annular sealing surface 224 on container neck 200 is formed with more than one curved shape such that sealing projection 130 on closure 100 makes sealing contact at more than one area viz. annular area 224A and annular area 224B on said annular sealing surface 224.
  • (v) The moulding of the closure from more than one type of material. For example, it would assist recycling if the closure tamper-evident band was moulded in the same material as the container. In another example a different colour or type of material may be used to mould the tamper band promoting visual difference between closure body and tamper band or physical performance of the tamper band.
  • Various dispensing means such as, but not limited to, a perforated or partially perforated closure with flip top cover, a flexible membrane with cruciform or other pattern slits or openings to thereby permit the dispensing of container contents or a pump action dispenser or a push/pull valve closing/opening feature.
  • a closure applied by axial rather than rotational motion and closures with more than one thread means
  • Said engagement means having ramped surfaces which cooperate during application of said closure to said container neck to reduce rotational force on the tamper-evident band during application reducing the possibility of severing the frangible ribs connecting the tamper-evident band to the skirt of the closure.
  • Fig. 1 is as per Fig.1 of Australian provisional application No, 2006904829 filed September 4 th , 2006
  • Fig. 2 is as per Fig.2 of Australian provisional application No. 2006904829 filed September 4 th , 2006
  • Fig. 3 is as per Fig,3 of Australian provisional application No, 2006904829 filed September 4 th , 2006
  • Fig 4 is as per Fig.4 of Australian provisional application No. 2006904829 filed September 4 th 2006

Landscapes

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

Abstract

A container and a closure wherein the closure (100) includes an upper wall (105), a skirt (110) extending downwardly, a tamper evidence band frangibly connected to the skirt, and an annular sealing projection (130) extending downwardly from the upper wall; and the container includes a neck (200) with thread mean (215). The blow moulded neck (200) has inner and outer walls, an engagement means adapted to engage with and sever said frangible connections thereby facilitating separation of said tamper evidence band from the skirt of the closure, an annular ridge (224) projecting from the inner wall towards an vertical axis of the neck and the annular ridge adapted to sealingly engage the annular sealing projection (130) on the closure. Upon removal rotation of the closure said sealing engagement is maintained between the closure and the container neck at least until the tamper evidence band is separated from the skirt of the closure.

Description

TAMPER EVIDENT CLOSURE AND CONTAINER NECK WITH INNER RIDGE
FIELU OF THE INVENTION
The present invention relates to closures for containers, and more particularly to tamper-evident closures for containers and including tamper evident dispensing 5 closures and tamper evident child resistant closures together with corresponding container necks .
BACKGROUND TO THE BSYENTTON
Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of i o common, general knowledge in the field.
There exists extensive prior art in relation to the design and manufacture of tamper-evident closures for containers, such as for example (JS Patents Nos. 4,653,657 (Papavasilopolous), 4,807,771 (Roy), 5,660,288 (Kyman), 6,551,093 (Taha), 6,640,988 (Taha) and Australian Patent application 43435/85 ( patent no ) 5 55087S) the disclosures of which are hereby incorporated into this specification by way of cross-reference. More particularly we refer to Australian patent application 2006203297 filed August 1st 2006 the disclosures of which are hereby incorporated entirely herein.
One problem that exists with prior art tamper-evident closures is the loss of 20 sealing between the closure and container opening prior to the tamper-evidence features operating and insufficient visibility of tamper evidence means.
Containers having a generally annular orifice and annular neck portion further shaped to co-operate with corresponding sealing closure weans including threads and 25 sealing means are used in the packaging of household consumables including liquid and dry goods. Said containers are often manufactured by means whereby a mould consisting on more than one portion is used to shape said containers.
Said mould often leaves on the outer surface of said container a surface irregularity or
30 witness mark, or ridge or projection or groove surface irregularity on and/ or adjacent to the area where said portions of said mould abut. Said mould may also have a pin to form the inner surface or bore of a container neck and said bore of said container neck is generally parallel with the axis of said neck or said bore is tapered slightly to allow withdrawal of said bore forming pin after forming said bore in said container neck.
Said surface irregularity may occur on the neck of said container and at and or adjacent to the outer surface of said neck and including neck sealing surfaces where corresponding sealing closure means sealingly abut said neck sealing surfaces. Often said corresponding sealing closure means incur the additional cost of inserting at least a compressible disc or wad inserted into said closure after manufacture of said closure . Said compressible disc or wad is designed to overcome the problem of said surface irregularities so that upon application of said closure to said container said wad is compressed between the closure and said neck sealing surfaces and said wad sealingly deforms around said surface irregularities thereby forming a seal between closure and container. However such use of said compressible disc or wad increases the cost of the closure and increases the quantity of waste material per used container
Other sealing means such as a deformable or compressible annular projection from the inside surface of a closure sealingly engaging with at least one area of said corresponding neck sealing surfaces are also known,
The aforementioned sealing means have an undesirable aspect especially in respect of closures attached by thread means to a corresponding threaded container and said closure having tamper evidence means whereby upon removal rotation to unscrew said closure from said container said corresponding sealing closure means are moved away from said neck sealing surfaces such that sealing engagement is lost before said tamper evidence means operate,
In some instances a metal foil disc such as an aluminium disc with a surface coating of heat activated adherent material may replace said compressible wad or be inserted into said closure with said compressible wad and said metal foil disc is sealingly affixed to said container neck by application of heating means such as by induced electric current. Such use of said metal foil disc solves the problem of loss of seal before tamper evidence means on said closure but increases the cost of the closure.
A further problem in prior art closures and containers is that an effective seal between closure and corresponding container relies on the neck of the container having a smooth annular surface whereby said smooth annular surface sealingly engages with a corresponding annular sealing means on a closure,
Extrusion blow moulded containers typically made in a mould having 2 parts exhibit a mould parting line blemish on the moulded container and container neck where the 2 halves of said mould abut. Said blemish is typically a ridge of plastic raised above the level of the rest of the adjacent container surfaces and including the areas which are intended as sealing surfaces . In extrusion blow moulded containers typically require the use of a flexible plastic disc or similar means interposed between closure and container neck whereby when said closure is fully applied to said container neck said flexible plastic disc deforms over said raised ridge and thereby said flexible plastic disc provides a sealing means between closure and container neck. However, the addition of said flexible plastic disc to a closure assembly increases the total cost of said closure. It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.
SUMMARY OF THE INVENTION
One aspect of the present invention deals especially with the need for a proper relationship between sealing means and tamper-evidence means such that the tarnper- evicten.ce means operates prior to the seal being breached. This avoids the possibility apparent with many so-called tamper-evident closures whereby by malicious tampering or inappropriate application torque and/or relaxation of the closure causing the seal between closure and container neck to be breached without the tamper- evidettce means operating and allowing the contents to be degraded by action of atmosphere or the malicious introduction of contaminants, Another aspect of the present invention is a means to at least improve sealing cooperation between closures and containers without the need for a foil or compressible wad and or to improve sealing co-operation between closures and containers so that seal between closure and container neck is not lost until after tamper evidence means has been activated.
The subject matter of Australian Patent No 2004261315 and PCT applications AU2004/ 001035 and AU2005/000222 and AU2005/001968 and priority documents- referred to by the foregoing and other patent documents referred to therein and/or provisional applications referred to by all of said foregoing documents are by reference incorporated herein.
The present invention is a container preferably formed by extrusion blow molding or injection blow moulding from one or more types of polyolefϊn materials and a closure having tamper evidence means and said closure also preferably formed from one or more types of polyolefin materials and said container neck has an annular projection or ridge adjacent to the uppermost surface of said container neck said annular ridge extending inwards towards the axis of said container neck and said closure having a corresponding annular projection adapted to sealiπgly engage with said annular projection or ridges on said container neck such that upon manipulation to remove said closure from said container neck said sealing engagement is maintained until at least said tamper evidence means operates to indicate that said closure has been manipulated to effect removal of said closure from said container neck., BRTEF DESCRIPTION OF DRAWINGS
Preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
S Fig, 1 shows a cross sectional elevation of a container neck and a corresponding closure according to a preferred embodiment of- the present invention;
Fig. 2 is an enlarged view of that portion of a cross sectional elevation of a container neck and a corresponding closure circled with dotted line and marked 'A' in Fig.1 showing a preferred embodiment of a container neck and corresponding closure;o Fig. 3 is an enlarged view of that portion of a cross sectional elevation of a container neck and a corresponding closure circled with dotted line arid marked 'A' in Fig.1 and showing another embodiment of the present invention co-operating sealing means between a closure 100 and a container neck, 200 ;
Fig. 4 is an enlarged view of that portion of a cross sectional elevation5 of a container neck 200 and a corresponding closure 100 circled with dotted line and marked 'A' in Fig.l and showing yet another preferred relationship between cooperating sealing means on closurelOO and neck 200;
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 0
Fig. 1 shows a cross sectional elevation of a container neck 200 and a corresponding closure 100 said closure having an annular disc forming top wall 105 said top wall having outer or upper surface 105A and inner surface 105B and depending from said top wall 105 a skirt wall 110 said skirt wall 110 having an inner surface 111 and5 thread means 1 12 projecting ftom said inner surface and an annular sealing projection • 130 which is formed to sealingly engage with corresponding container neck 200 and said container neck 200 having a neck wall 210 having an outer neck surface 216 and an inner neck surface 218 and thread means 215 projecting from said outer surface said thread means formed to co-operate with said thread means 112 of closure 100 to0 threadingly engage and retain said closure 100 on said neck 200 and annular sealing projection and or sealing surface and or neck sealing ring 224 projecting from said inner neck surface 218 towards the axis of said neok and said annular ring 224 formed to co-operate with said annular sealing projection 130 of said closure 100 to sealingly engage with said closure 100 upon application of said closure to said neck and said sealing ring 224 is formed by contact of a polyolefin material from which the container or at least the container neck is formed with a uniform surface of a moulding device which is shaped to form the orifice of said container neck ( not shown). Said uniform surface of said moulding device enabling the creation of a sealing surface on said container neck which is free from surface irregularities which would otherwise prevent proper sealing engagement between said container neck and said closure. Preferably said neck of said container is formed by extrusion Wow moulding and or injection blow moulding.
Fig. 2 is an enlarged view of that portion of a cross sectional elevation of a container neck 200 and a corresponding closure 100 circled with dotted line and marked 'A* in Fig. T and showing a preferred relationship between co-operating sealing means on closure 100 and neck 200 whereby said annular sealing projection 130 on closure 100 is preferably formed with an inner annular surface 134 located closer to the axis of the closure than outer annular surface 138 said outer annular surface 138 extending between areal38A and area 14OA whereby the diameter of said sealing projection 130 at area 140A is greater than the diameter at area 138A and adjoining and connected to said outer annular surface 138 is outer annular surface 140 extending between area 140A and area 140B and formed such that the diameter of said outer annular surface 140 is the same and forming a cylindrical surface parallel to the axis of said closure or if said diameters vary so as to form one or more annular sealing surfaces other than a cylindrical surface then such difference in diameters still allows for such interference required in fit to effect a sealing engagement between said annular sealing projection 130 and said container neck 200 and said annular sealing surface 140 having a length extending over a vertical height measured parallel to the axis of said closure and represented by the distance 4C between dotted lines £C1 ' and 'C2' . Said distance 'C being at least equal to the axial distance closure 100 moves relative to container neck 200 upon removal rotation of said closure 100 prior to operation of tamper evidence means (tamper evidence means not shown) such that sufficient of said annular sealing surface 140 is in sealing engagement with said container neck 200 to keep the container sealed until tamper evidence means on said closure has operated to show that the container has been un-sealed and connected to said outer annular surface 140 is outer annular surface 145 forming annular channel 145 A said channel 145 A spaced apart from said inner surface 105B towards said outer surface 105 A ;
said container neck 200 having annular sealing surface 224 which is preferably spaced apart from inner neck surface 218 by a distance 'E' and said distance 'E' being such that annular surface 140 of closure 100 is spaced apart from and does not interfere with inner surface 218 and annular sealing surface 224 is preferably formed; at a diameter providing an interference fit with annular surface 140 of annular sealing projection 130 of closure 100 and such interference preferably being less than distance 'B' whereby upon removal rotation to remove said closure from said container neck said annular sealing surface 224 remains in sealing engagement with said annular surface 140 of closure 100 to seal the container, until tamper evidence means on said closure has operated to show thai the container has been un-sealed.
Fig. 3 is an enlarged view of that portion of a cross sectional elevation of a container neck 200 and a corresponding closure 100 circled with dotted Jitie arid marked 'A' in Fig.l and showing an alternate preferred relationship between co-operating sealing means on closure 100 and neck 200 to that relationship shown in Fig. 2 and whereby said annular sealing surface 224 on container neck 200 is formed with a curved shape such that sealing projection 130 on closure 100 makes annular sealing contact at the point on said annular sealing surface 224 which is closest to the axis of said container neck.
Fig, 4 is an enlarged view of that portion of a cross sectional elevation of a container neck 200 and a corresponding closure 100 circled with dotted line and marked 'A' in Fig.1 and showing yet another alternate preferred relationship between co-operating sealing means on closurelOO and neck 200 to that relationship shown in Fig. 2 and Fig, 3 and whereby said annular sealing surface 224 on container neck 200 is formed with more than one curved shape such that sealing projection 130 on closure 100 makes sealing contact at more than one area viz. annular area 224A and annular area 224B on said annular sealing surface 224.
The various aspects of the present invention described above may be combined with any one or more of the following:
(i) Various child resistant features, such as is disclosed in Australian patent 43435/85 ( 550878 ) the disclosures of which are hereby incorporated in this application and one of said features may be of the type whereby it is necessary to exert downward force either on the top of the closure or on the top of an over-cap which fits over the top of the closure, such that the downward force overcomes resistance thereby allowing engagement means between the over-cap and the closure to enable removal rotation of the closure to operate the tamper-evident feature and remove the closure from the neck of the container, (ii) child-resistant tamper-evident closures, including a "squeeze dropper" type dispensing closure.
(iii) Dispensing closures for liquids, such as oils. (iv) Dispensing closures for particulate matters, such as granular powders and the like.
(v) The moulding of the closure from more than one type of material. For example, it would assist recycling if the closure tamper-evident band was moulded in the same material as the container. In another example a different colour or type of material may be used to mould the tamper band promoting visual difference between closure body and tamper band or physical performance of the tamper band.
(vi) Various dispensing means such as, but not limited to, a perforated or partially perforated closure with flip top cover, a flexible membrane with cruciform or other pattern slits or openings to thereby permit the dispensing of container contents or a pump action dispenser or a push/pull valve closing/opening feature. (vii) A closure applied by axial rather than rotational motion and closures with more than one thread means,
(viii) A closure with a cooperating ratchet or engagement means between the tamper-evident band and features on the neck of the container such that cooperation between the said engagement means or any of them upon removal rotation of the threaded closure tends to promote severing of the frangible ribs connecting the tamper-evident band to the skirt of the closure. Said engagement means having ramped surfaces which cooperate during application of said closure to said container neck to reduce rotational force on the tamper-evident band during application reducing the possibility of severing the frangible ribs connecting the tamper-evident band to the skirt of the closure.
(ix) Various means of employing an additional foil seal to ensure freshness of the contents of a container and which may include a means to pierce the foil.
(x) Closures made of metal or plastic materials, or a combination of metal and plastic materials as may be useful in hot fill or retorted or vacuum seal packages.
(xi) Containers made of plastic, metal and glass materials. Although the various aspects of this invention have been described with reference to specific examples it will be appreciated by those skilled in the art that the invention may be embodied in many other forms.
Fig. 1 is as per Fig.1 of Australian provisional application No, 2006904829 filed September 4th, 2006
Fig. 2 is as per Fig.2 of Australian provisional application No. 2006904829 filed September 4th, 2006
Fig. 3 is as per Fig,3 of Australian provisional application No, 2006904829 filed September 4th, 2006
Fig 4 is as per Fig.4 of Australian provisional application No. 2006904829 filed September 4th 2006

Claims

CLAIMS i. A container and a closure for connection to said container, said closure including: an upper wall; a skirt formed integrally with and extending downwardly from said upper wall, said skirt adapted to engage with a neck portion of the container to secure the closure to the container; a tamper evidence band frangibly connected to said skirt; an annular sealing projection extending downwardly from said upper wall ; the neck of the container including: an inner an outer and atop wall connecting said inner and outer walls; engagement means adapted to engage with and sever said frangible connections thereby faciltating separation of said tamper evidence band from said skirt of said closure; an annular ridge projecting from said inner wall adjacent to said top wall towards the axis of said neck and said annular ridge adapted to sealingly engage with said annular sealing projection on said closure ; whereby upon removal rotation of said closure said sealing engagement is maintained between said closure and said container neck at least until said tamper evidence band is separated from said skirt of said closure
PCT/AU2007/001286 2006-09-04 2007-09-04 Tamper evident closure and container neck with inner ridge WO2008028220A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006904829 2006-09-04
AU2006904829A AU2006904829A0 (en) 2006-09-04 Closure and container

Publications (1)

Publication Number Publication Date
WO2008028220A1 true WO2008028220A1 (en) 2008-03-13

Family

ID=39156719

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2007/001286 WO2008028220A1 (en) 2006-09-04 2007-09-04 Tamper evident closure and container neck with inner ridge

Country Status (1)

Country Link
WO (1) WO2008028220A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013231119B2 (en) * 2013-09-20 2018-08-09 Bcl Closures Pty Ltd Cap Closure
US11912468B2 (en) 2017-05-04 2024-02-27 Berry Global, Inc. Closure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940004A (en) * 1974-10-15 1976-02-24 Three Sisters Ranch Enterprises Widemouth jar neck and plastic cap construction
US4166552A (en) * 1977-11-16 1979-09-04 Three Sisters Ranch Enterprises Plastic cap and container construction
US4354609A (en) * 1980-01-09 1982-10-19 Hidding Walter E Snap-on tamperproof bottle cap
US4771904A (en) * 1986-06-24 1988-09-20 Raymond Perne Tamperproof closing means for a threaded container neck
US5105960A (en) * 1990-12-24 1992-04-21 Northern Engineering & Plastics, Corp. Container and closure with cooperating threaded portions having fastening configurations
FR2682357A1 (en) * 1991-10-10 1993-04-16 Stiplast Sarl Tamper evidence device for a stopper made of plastic material used for packing mineral water
US20070158295A1 (en) * 2006-01-06 2007-07-12 Portola Packaging, Inc. Tamper-evidencing container and closure structures

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940004A (en) * 1974-10-15 1976-02-24 Three Sisters Ranch Enterprises Widemouth jar neck and plastic cap construction
US4166552A (en) * 1977-11-16 1979-09-04 Three Sisters Ranch Enterprises Plastic cap and container construction
US4354609A (en) * 1980-01-09 1982-10-19 Hidding Walter E Snap-on tamperproof bottle cap
US4771904A (en) * 1986-06-24 1988-09-20 Raymond Perne Tamperproof closing means for a threaded container neck
US5105960A (en) * 1990-12-24 1992-04-21 Northern Engineering & Plastics, Corp. Container and closure with cooperating threaded portions having fastening configurations
FR2682357A1 (en) * 1991-10-10 1993-04-16 Stiplast Sarl Tamper evidence device for a stopper made of plastic material used for packing mineral water
US20070158295A1 (en) * 2006-01-06 2007-07-12 Portola Packaging, Inc. Tamper-evidencing container and closure structures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class Q33, AN 93-221083/28 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013231119B2 (en) * 2013-09-20 2018-08-09 Bcl Closures Pty Ltd Cap Closure
US11912468B2 (en) 2017-05-04 2024-02-27 Berry Global, Inc. Closure
EP3634874B1 (en) * 2017-05-04 2024-03-13 Berry Global, Inc. Closure cap

Similar Documents

Publication Publication Date Title
AU677689B2 (en) Container closure assembly
RU2266852C2 (en) Resealable distribution closing assembly (variants)
US4752014A (en) Tamper-evident child-resistant closure and container with same
US5097974A (en) Tamper-evident closures
US20070131641A1 (en) Closure with frangible tamper-evident band
CA2688221C (en) Non-removable finish and closure system
US6655553B2 (en) Dispensing closure with tamper-evident sleeve
US5641099A (en) Nestable pouring spout assembly
US5915579A (en) Container with tamper-evident and pre-lockable closure assembly
US20040232149A1 (en) Tamper evident cap
US7413097B1 (en) Tamper-evident closure and method of making same
US6386405B1 (en) Snap on closure and method
US3073472A (en) Closure for containers
US20020104852A1 (en) Dispensing closure with tamper-evident sleeve
EP2114788B1 (en) Tamper evident closure
JP4803650B2 (en) Refill prevention cap
AU2008264964B2 (en) Closure system and its method of forming
WO2008028220A1 (en) Tamper evident closure and container neck with inner ridge
EP3826934A1 (en) Fluid container closure system
WO2005077777A1 (en) Closure with frangible tamper-evident band
WO2005075313A1 (en) Tamper resistant container and cap
WO2021191287A1 (en) Fluid container closure
JP4294411B2 (en) Cap for liquid container
WO1985001271A1 (en) Closures for containers
JP2013086824A (en) Tamper-proof cap

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07800244

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07800244

Country of ref document: EP

Kind code of ref document: A1