EP2160330A1 - Closure system and its method of forming - Google Patents
Closure system and its method of formingInfo
- Publication number
- EP2160330A1 EP2160330A1 EP08762420A EP08762420A EP2160330A1 EP 2160330 A1 EP2160330 A1 EP 2160330A1 EP 08762420 A EP08762420 A EP 08762420A EP 08762420 A EP08762420 A EP 08762420A EP 2160330 A1 EP2160330 A1 EP 2160330A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- neck
- closure system
- locking member
- accordance
- cap
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000011324 bead Substances 0.000 claims description 17
- 230000002829 reductive effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 2
- 230000008901 benefit Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000717 retained effect Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009455 aseptic packaging Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
-
- 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
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
- B65D1/0246—Closure retaining means, e.g. beads, screw-threads
-
- 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
- B65D41/46—Snap-on caps or cap-like covers
- B65D41/47—Snap-on caps or cap-like covers push-on and twist-off
-
- 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
- B65D2401/00—Tamper-indicating means
- B65D2401/15—Tearable part of the closure
Definitions
- the present invention relates to a closure system comprising a neck and a cap engageable with the neck.
- the closure system includes tamper evident means comprising a locking member attached to the neck such that, having applied the cap to the neck, the cap is prevented from being removed from the neck prior to breaking of the tamper evident means.
- Paperboard cartons have long been known to benefit from the addition of a plastics pouring device or spout commonly referred to as a "fitment".
- Such devices commonly comprise a neck and many are initially closed by an integrally moulded disc within the neck structure. The disc is joined to the neck by means of a frangible tear-line and is provided with a grip mechanism in the form of a pull-ring or pull-tab.
- a user grasps the grip mechanism and tears the moulded disc away from the neck structure along the frangible tear-line.
- These devices are generally additionally provided with a cap which surrounds the outside features of the neck and provides the facility to reclose the carton once it has been opened.
- Such devices thus provide reasonable tamper evidence as well as sealing properties appropriate to aseptic or extended life applications.
- the disadvantage that such devices have is- their well known potential for splashing the packaged product as a result of the sudden release of the disc on opening.
- no disc is provided within the neck structure and, instead, the interaction between the cap and neck is designed to provide both a primary seal and the tamper evident capability. Whilst this variation overcomes the problem associated with the frequent splashing of the packaged product on opening, it has provided poor compatibility with standard long life (aseptic) cleaning systems.
- the present invention provides a closure system of reduced complexity and which is cheaper to manufacture in which a locking member is attached to the neck, the locking member being orientated in a first position with respect to the neck to facilitate moulding of the neck and orientated in a second position with respect to the neck to prevent removal of at least a portion of the cap from the neck. Furthermore, the locking member is moved from the first position to the second position upon application of the cap to the neck.
- the locking member is attached to the neck at a point part way up the neck wall and, in use, is inverted downwards, away from the dispensing orifice.
- This arrangement also serves to limit the potential for levering up the underside of the cap in order to defeat the tamper evident feature.
- a closure system comprising a cap, a neck and tamper evident means, the system allowing the application of the cap to the neck whereupon the tamper evident means prevents the cap from being removed from the neck while the tamper evident means remains intact.
- the neck is provided with flexible locking members, the members being adapted to engage with the tamper evident means on the cap and thus to resist subsequent removal of an annular band after application of the cap to the neck.
- the locking members are moulded in a flexible format able to adapt to release on removal from a standard and mostly conventional single axis mould movement providing great opportunity for economical manufacturing benefit to such a system over conventional systems.
- the locking member will be adapted to fold downwards post moulding as a result of application of a suitable downward force of the cap or external force.
- the locking wall members hinge with respect to the closure annular band, this providing downward and inward folding movement which forms adaptable engagement with the annular band on the closure.
- the flexible locking members may be formed as a plurality of flexible tabs.
- the plurality of flexible tabs may be circumferentially spaced with each tab being separated from an adjacent tab on either side by a pair of slits.
- these tabs are shaped with a radial form which once inverted downwards and inwardly will form against a truncated wall of the cylindrically shaped neck to enhance the structural strength and maintain maximum contact with the annular contact band provided to the closure.
- the locking member extends from the neck in a direction which is inclined vertically outwardly at an angle of between 0° and 15° to the vertical axis of the closure system thus providing an adaptable fit to accommodate variations in size of the two components and enhancing the tamper evident security and ability to retain the tear band feature after opening.
- the locking member may comprise a plurality of circumferentially spaced locking elements, the locking elements having a first circumferential dimension adjacent the annular band and a second circumferential dimension adjacent the neck, the first circumferential dimension being greater than the second circumferential dimension.
- the locking elements are separated by a plurality of apertures, the apertures being arranged in groups on circumferentially opposite sides of the locking member .
- the locking member may comprise one or more pleats or folds.
- the locking member may comprise a plurality of circumferentially spaced locking elements separated by areas of weakness or reduced thickness .
- the cap may be provided with engagement means for repeated and releasable engagement with complimentary engagement means provided on the neck.
- the pair of complimentary engagement means may comprise a pair of helical thread configurations.
- the configuration provided on the neck is preferably a male thread configuration.
- the pair of thread configurations is adapted so as to permit the application of the cap to the neck by means of an axially applied force whereupon the threads on the cap slide over those provided on the neck and then interengage.
- the threads on the cap are orientated with respect to those on the neck in such a way that upon axial application of the cap to the neck the respective thread configurations are placed in optimal thread engagement.
- the cap may be provided with an annular plug for receipt within a bore of the neck.
- the closure system comprises a fitment for attachment to a carton or other container.
- the closure system containing the locking members may be integrally moulded with a container, the neck forming a neck of the container.
- an inwardly formed diameter connected to the inside walls of the neck creating an opening able to interact with a suitable formed seal diameter projecting from the underside of the closure to form a gaseous and liquid tight seal.
- this inward formed diameter will maintain the point of seal at a distance of between 0.1mm and 5mm clear of the side wall to allow access of cleaning solutions and light able to cleanse the accessible area for the purpose of hygienic and aseptic type packing.
- said inward formed diameter will provide strength to the structure to permit further light weighting of the design facilitated primarily by the novel flexible locking members.
- said inward formed diameter shall be formed with a slightly downward angle of face to allow ease of application of closure seal and return of product after dispensing.
- a closure system comprising a cap, a neck and tamper evident means moulded in a flexible structure, the structure allowing the application of the cap to the neck whereupon the tamper evident means prevents the cap from being removed from the neck while the tamper evident means remains intact.
- a locking member is joined to the neck at a flexible connection and contacting cap at the extent of member whereupon the member co-operates with the neck and the cap to form said tamper evident means.
- said tamper security comprises an annular band adapted to pass over the neck upon application of the cap to the neck and a locking member engaged to the annular band, the locking member being adapted to co-operate with the neck to resist the subsequent removal of the annular band from the neck.
- closure system is installed with a series of frangible bridges between the section of annular ring and threaded portion to provide means of tamper evidence .
- closure system is installed with slit bridges post assembly of the cap to the neck structure.
- the locking member is hinged and preferentially, though not essentially, radially formed to allow the neck form to lock fully over to within close proximity of the neck form to more effectively support the closure system allowing for post assembly slitting of bridge form.
- the flexible locking member (s) is joined to the neck by a web or point of weakness this forming a hinge permitting the locking member to invert to a downward and slightly outward location thus providing the necessary surface to cooperate with the annular ring of the closure and create effective tamper proof engagement.
- the neck is provided with a locking wall, the annular ring of closure being adapted to engage with the locking wall to resist subsequent removal of the annular band upon application of the cap to the neck.
- the act of applying the cap to the neck causes the locking member to fold inwardly of the annular band.
- the locking member hinges with respect to the annular band, folding inwardly and into engagement with a locking wall provided on the closure.
- the annular band is joined to the cap at a frangible connection, said frangible connection being adapted to break upon the attempted removal of the cap from the neck.
- the locking member is formed to a radius able to co-operate with the neck form on final inverting.
- Advantageously locking connections are formed as a plurality of frangible tabs connected to the neck form.
- said plurality of flexible locking tabs are circumferentially spaced with each tab being separated from an adjacent tab on either side by a pair of slits, openings or folding pleats.
- the flexible locking member extends from the neck to a point able to cooperate with the annular band of closure on inverting of said flexible locking member.
- the flexible locking member extends from the neck in a direction which is inclined vertically outwardly at an angle of between 0° and 15° to the axis of the closure system thus providing an adaptable fit to accommodate variations in size between the two components and enhancing the tamper evident security and ability to retain the tear band feature after opening.
- the flexible locking elements are separated by a plurality of apertures.
- the flexible locking member comprises one or more pleats or folds.
- the cap is provided with engagement means for repeated and releasable engagement with complimentary engagement means provided on the neck.
- the pair of complimentary engagement means comprise between 1 and 10 helical thread configurations
- the thread configuration provided on the neck is a male thread configuration.
- the thread configuration provided on the neck is a female thread configuration.
- the thread configurations are adapted so as to permit the application of the cap to the neck by means of a rotationally and axially applied force whereupon the threads on the cap slide over those provided on the neck to create engagement.
- the cap is provided with an annular plug for receipt within a bore of the neck.
- frangible bridges connecting the annular ring portion and threaded portion are formed preferentially, though not essentially, by slitting or other method after assembly of closure to neck form.
- closure system comprises a fitment for attachment to a carton or other container.
- a closure in combination with a neck which when assembled provides access of between 0.5mm and 5mm towards point closure and neck cooperate to provide a seal thus allowing for more effective sanitizing.
- a neck form providing an inwardly projected surface creating a point of seal 0.5mm-5min clear of the neck side wall.
- the inwardly projected surface is preferentially, though not essentially, angled downwards towards the opening of the neck to permit product return flow and enhance seal and application by creation of mechanical advantages.
- a method of closing a container in a tamper evident manner comprising the steps of moulding a flexible locking member to the neck of the container by which means form a structure which by applying the cap to the neck prevents the cap from being removed from the neck while the tamper evident ring attached to the closure remains intact.
- the tamper evidence mechanism of the closure may be created by slitting of the bridge formation after the closure is assembled to the neck thus permitting for weaker bridge form and resultant enhancement to the tamper evidence.
- Figure 1 is a perspective view of a closure system embodying the present invention
- Figure 2 is an elevational view of the closure system of Figure 1;
- Figure 3 is a cross sectional view of a neck portion of the closure system;
- Figure 4 is a detailed cross sectional view of the neck portion of the present invention showing a flexible locking member;
- Figure 5 is an elevational view of the neck portion of the closure system
- Figure 6 is a cross sectional view of a cap portion of the closure system
- Figures 7 (a) , (b) and (c) are cross-sectional views of the closure system showing the movement and resultant position of the flexible locking member when the cap portion is applied to the neck portion;
- Figure 8 is a cross sectional view of the closure system once the cap portion has been fully applied
- Figure 9 is a cross sectional view of the closure system after the cap portion has been removed and with a tamper evident band retained on the neck portion.
- a closure system embodying the present invention may take the form of a fitment 10.
- the fitment 10 comprises a neck portion 12 and a cap portion 14.
- the neck portion 12 is shown in more detail in Figures 3 to 5 and comprises an apertured flange 16 having substantially smooth and planar upper and lower surfaces 18 and 20, respectively.
- a cylindrical wall 22 projects upwardly from the upper flange surface 18 to form a smooth lower neck portion.
- the cylindrical wall 22 merges with an upwardly and radially inwardly projecting wall 24.
- This upwardly and radially inwardly projecting wall 24 in turn merges with a second cylindrical wall 26 which has both a reduced internal diameter and a reduced external diameter compared to the first cylindrical wall 22.
- the first cylindrical wall 22 is of reduced wall thickness compared to both the upwardly and radially inwardly projecting wall 24 and the second cylindrical wall 26 as well as the apertured flange 16.
- the second cylindrical wall 26 merges with a downwardly and radially inwardly directed annular rim 28 which terminates at a cylindrical surface 30 defining a dispensing aperture or bore 32.
- the second cylindrical wall 26, which defines an upper neck portion, is provided on an external surface with engagement means 34 with which to engage complimentary engagement means provided on the cap portion 14.
- the engagement means 34 take the form of a male, equi-spaced, multi-lead helical thread configuration which includes three threads or leads 36. It will be apparent however, that the engagement means 34 may take a number of different forms and, in particular, need not be limited to three threads or leads but may comprise one or two threads as appropriate. The engagement means 34 may also comprise four, five or more threads if so desired.
- each thread 36 extends about 120° around the circumference of the second cylindrical wall 26.
- threads of a lesser or greater extent may also be employed.
- each thread 36 may extend within a range from 90° to more than 360°.
- the helical thread configuration has a fine thread density to limit the vertical float of the cap portion 14 with respect to the neck portion 12.
- the thread density preferably lies within a range of between 6 and 12 threads per linear inch.
- the helical thread configuration has a thread density of approximately 8 threads per linear inch.
- the neck portion 12 is provided with a plurality of upwardly and radially outwardly directed locking members 40.
- the locking members 40 are mutually spaced and arranged circumferentially around the neck portion 12.
- Each locking member 40 is joined to the first cylindrical wall 22 and/or the upwardly and radially inwardly projecting wall 24 by a thin web 42 which, with the locking member 40, defines, in cross-section, an upwardly and radially outwardly directed lower surface 44 which terminates in an end surface 46.
- the end surface 46 remote from the first cylindrical wall 22 and the upwardly and radially inwardly projecting wall 24, extends substantially at right angles to the lower surface 44 before joining, again at right angles, with a downwardly and radially inwardly directed upper surface 48.
- This upper surface 48 in turn merges with a substantially downwardly directed necking surface 50 before merging with an upper surface 52 of the web 42.
- the locking members 40 are curved such that the lower surface 44 has substantially the same radius of curvature and centre of curvature as the first cylindrical wall 22. Being of substantially constant wall thickness, other than in the region of the web 42 and necking surface 50, the upper surface 48 is similarly curved.
- the locking members 40 are shown as being mutually spaced and arranged circumferentially around the neck portion 12, it will be understood that one or more (or, indeed, all) of the locking members 40 may be joined by pleats or folds extending between their respective side surfaces. These pleats or folds may be of reduced wall thickness compared to the locking members 40 to enhance their flexibility or else may be of substantially the same wall thickness and scored or necked along intended fold lines.
- the neck portion 12 On an internal surface, adjacent the transition between the apertured flange 16 and the first cylindrical wall 22, the neck portion 12 is provided with a radially inwardly projecting bead 38, the purpose of which will be described in more detail below.
- the cap portion 14 shown in Figure 6 the cap portion comprises a circular top 60 having an undersurface 62.
- the circular top 60 merges at a radially outer edge with a downwardly and radially outwardly inclined surface 64 which, in turn, merges with a depending annular side wall 66 to form a downwardly extending skirt portion.
- the depending annular side wall 66 is provided, on an inner surface 68, with complimentary engagement means 70 for repeated and releaseable engagement with the engagement means 34 provided on the neck portion 12.
- this engagement means 70 may take many forms but, in the example shown, comprise a male, equi-spaced, multi-lead helical thread configuration having three threads or leads 72 and a thread density of approximately 8 threads per linear inch.
- each thread 72 extends approximately 120° around the inner surface 68 of the depending annular side wall 66. However, it is to be understood that this thread length may be increased or decreased if desired. For example, each thread 72 may extend in a range from 90° to more than 360°. Likewise, the thread density is not intended to be limited to being about 8 threads per linear inch but, nevertheless, preferably lies within the range from about 6 to about 12 threads per linear inch.
- one of the engagement means 34 or 70 comprises a male helical thread configuration
- the other of the two engagement means may comprise a helical groove configuration.
- one or both of the thread configurations may be interrupted at intervals along its length.
- the two thread configurations may be shaped so as to slip past one another when a direct, axial downward force is applied to the cap portion 14 to urge the cap portion into engagement with the neck portion 12.
- the threads 72 on the cap portion 14 snap over the threads 36 on the neck portion 12 before interengaging with them.
- This may be made possible by appropriate shaping of the threads 36 and 72, for example, by forming the threads with an asymmetric cross-section or by making them less pronounced.
- the threads 36 and 72 may be of symmetrical, as opposed to asymmetrical, cross-section and may be more pronounced.
- the interior of the cap portion 14 is provided with an annular plug 74 which depends from the undersurface 62 of the circular top 60 and is spaced radially inwardly of the depending annular side wall 66.
- the annular plug 74 is defined by a respective radially inner and outer walls 76 and 78.
- the radially outer plug wall 78 merges at an end remote from the circular top 60 with a generally downward and radially inwardly directed surface 80. This generally downward and radially inwardly directed surface 80 intersects the radially inner plug wall 76 and, together, serves to provide the annular plug 74 with a bevelled radially outer surface and a tapering cross-section.
- the tapering cross-section is further accentuated by the fact that, whereas the radially outer plug wall 78 extends in a direction substantially perpendicular to the plane of the undersurface 62, the radially inner plug wall 76 extends from the undersurface 62 in a direction which is both downward and radially outward.
- the depending annular side wall 66 is provided on its outer surface with a plurality of circumferentially spaced, vertically extending ribs 82 which serve as knurls to facilitate the gripping of the cap portion 14 by a user.
- the vertically extending ribs 82 also facilitate the assembly of the cap portion 14 to the neck portion 12 during the mechanical process for the assembly of the fitment 10.
- a small downwardly directed dimple 84 is formed in the centre of the circular top 60 so that any flash left after the cap portion 14 has been moulded does not project above a plane defined by the upper surface of the circular top 60.
- the inner surface 68 of the depending annular side wall 66 is provided with a radially inwardly projecting bead 86 at an end remote from the circular top 60.
- the radially inwardly projecting bead 86 is, in turn, defined by a radially inwardly and downwardly directed surface 88 which merges with the inner surface 68 and, with it, forms an internal shoulder 90.
- the radially inwardly and downwardly directed surface 88 merges with a downwardly and radially outwardly directed surface 92 before this last surface, in turn, merges with an end surface 94 of the depending annular side wall 66, the end surface 94 extending generally at right angles to the inner surface 68.
- the depending annular side wall 66 is provided with a plurality of circumferential slits or spaces 96.
- slits or spaces 96 are mutually spaced by frangible bridging elements 98 and together serve to define a circumferential line of weakness which divides the downwardly extending skirt portion defined by the depending annular side wall 66 into an upper skirt section and a lower skirt section in which the lower skirt section is capable of functioning as a retained tamper evident band 100.
- the circumferential slits or spaces 96 may be formed as a secondary slitting operation and may be created mechanically after the cap portion 14 has been moulded. Alternatively, the slitting operation may be performed after the cap portion 14 has been assembled onto the neck portion 12.
- the circumferential slits or spaces 96 may be formed during the process of moulding the cap portion 14.
- moulding the circumferential slits or spaces 96 provides the advantage that no secondary operations are then required to the cap portion 14 other than assembly to the neck portion 12, one disadvantage is that the strength of the bridging elements 98 can not be easily adjusted without major re- tooling.
- Another disadvantage is that without correct maintenance there is a risk that flashing may occur within the circumferential slits or spaces 96 which may, in turn, adversely affect the tamper evident properties of the fitment 10. Both these disadvantages are addressed by a secondary slitting operation.
- the cap portion 14 can then be moulded using a single axis mould tool.
- Such mould tools in which the mould components open and close along only a single axis, are generally less complex, less costly and may run faster and more efficiently than their multi-axis counterparts. Furthermore, the strength or dimensions of the bridging elements 98 can be easily adjusted by replacing a single blade in the slitting machine. The disadvantage, of course, is that a second machine is required to do the slitting and these can be costly when required to run at high volumes.
- the cap portion 14 is offered up to the neck portion 12 in the orientation illustrated schematically in Figures 7 (a) , (b) and (c) .
- the cap portion 14 may be applied to the neck portion 12 by means of a push-on application, whereby the threads 72 on the cap portion 14 snap over those provided on the neck portion 12, or else by means of a rotary application in which the cap portion 14 is threaded onto the neck portion 12 and the two thread configurations interengage in the conventional manner.
- the radially inwardly projecting bead 86 provided on the inner surface 68 of the depending annular side wall 66 passes over the engagement means 34 provided on the neck portion 12.
- the annular plug 74 is also received within the bore 32 defined by the cylindrical surface 30 at the radially inner end of the downwardly and radially inwardly directed annular rim.28. In so doing, the generally downward and radially inwardly directed surface 80 slides along the cylindrical surface 30 causing the annular plug 74 to flex slightly radially inwardly. This same movement also causes the downwardly and radially inwardly directed annular rim 28 to flex slightly downwardly. Once fully received within the bore 32, the restoring force inherent in the resilient nature of the design and materials making up the annular rim 28 and the annular plug 74 causes the radially outer plug wall 78 to be urged into sealing engagement with the cylindrical surface 30.
- the interaction between the annular plug 74 and the cylindrical surface 30 constitutes a primary seal.
- the fitment 10 may be applied to a paperboard or other carton in the conventional manner.
- the opening to the neck portion 12 defined by the radially inwardly projecting bead 38 facilitates the insertion of a spud of a manipulation tool.
- the apertured flange 16 has substantially smooth and planer upper and lower surfaces 18 and 20, the fitment 10 may be bonded either to the outside or to the inside of a carton panel as desired.
- the neck portion 12 may be provided with one or more additional projections which co-operate with the apertured flange 16 to retain the fitment 10 in a specific orientation with respect to the carton panel to which the fitment is to be attached.
- the tamper evident capability of the fitment 10 functions as follows. In the assembled condition the cap portion 14 is prevented from being removed from the neck portion 12 in an axial direction by the interengagement of the engagement means 34 and 70 and by the engagement of the end surfaces 46 of the locking members 40 with the radially inwardly projecting bead 86.
- the close proximity of the end surface 94 of the depending annular side wall 66 with the upper flange surface 18 precludes the insertion of a tool between the two surfaces to prise the cap portion 14 off the neck portion 12.
- a user is required to rotate the cap portion 14 with respect to the neck portion 12. This causes the threads 72 of the engagement means 70 to rise up the threads 36 of the engagement means 34 and bring the radially inwardly and downwardly directed surface 88 of the radially inwardly projecting bead 86 more firmly into engagement with the end surfaces 46 of the locking members 40.
- the cap portion 14 may be removed and the contents dispensed from the carton.
- the cap portion 14 may be reapplied and subsequently removed from the neck portion 12 as often as it is desired.
- the bridging elements 98 have been fractured, it will be noted that the fact that the locking members 40 remain folded and trapped between the first cylindrical wall 22 and the inner surface 68 ensures that the tamper evident band 100 is retained on the neck portion 12 and cannot be removed without causing physical damage to the fitment 10 and/or the associated packaging.
- the tamper evident band 100 remains in essentially the same position with respect to the neck portion 12 both before and after initial opening.
- the end surfaces of the locking members would represent an undercut which could only sensibly be formed using a mould tool having components that opened and closed along two transverse axes.
- the neck portion 12 illustrated in Figures 3 to 5 can be formed using a mould tool having components that open and close along only a single axis. This represents a significant saving in tooling costs and a simplification of the manufacturing process.
- the necking surface 50 is shown in Figure 4 as being substantially downwardly directed, in fact the surface may extend from the upper surface 48 to the upper surface of the web 42 at an angle of between 0.5° and 10° to a longitudinal axis of the neck portion indicated by reference numeral 54 while still enabling the mould tool responsible for producing the neck portion 12 to open and close in a direction parallel to the longitudinal axis 54 and without requiring mould tool components to open and close in a direction transverse to that axis.
- locking members 40 which, in their initial position, are directed upwardly and radially outwardly from the cylindrical wall 22 but which may be folded or hinged so as to engage or otherwise hug the cylindrical wall is that it allows the first cylindrical wall 22 to be formed with a reduced wall thickness compared to other parts of the neck portion 12. This has a direct saving on the amount of plastics material necessary to mould the fitment 10 and translates into an important reduction in the cost of manufacture.
- the fact that, in the assembled condition, the locking members 40 are pressed up against the first cylindrical wall 22 means that, in use, the effective thickness of the lower neck portion at the point where it engages with the radially inwardly projecting bead 86 is comparable to other regions of the neck portion 12 and more than capable of fulfilling its function.
- locking members 40 that can flex from an initial, as-moulded, position to an operable, in-use, position is that they may serve to eliminate any vertical float of the cap portion 14 with respect to the neck portion 12. This is because the cap portion 14 may be fully retained by the interengagement between the end ⁇ surfaces 46 of the locking members 40 and the radially inwardly projecting bead 86.
- the natural resilience of the locking members 40 which tends to urge them to return to their as-moulded position and so causes the upper surface 48 adjacent the end surface 46 to be urged into evermore pressing engagement with the inner surface 68 of the depending annular sidewall 66 also helps to prevent the cap portion 14 from becoming loose during transit between the point of manufacture and the point of final application of the fitment 10 to a carton.
- the primary seal between the annular plug 74 and the cylindrical surface 30 is located a small but non-zero distance 102 from the inner surface of the second cylindrical wall 26.
- this distance 102 may be between 0.1mm and 5mm. In a preferred embodiment this distance 102 is between 1.8mm and 2.1mm.
- This spacing between the position of the primary seal and the inner surface of the second cylindrical wall 26 has the advantage of allowing the ingress of cleaning solutions of the type used during rinsing processes.
- This configuration also has the advantage of allowing light to penetrate to all surfaces of the neck portion 12 for the purpose of hygiene treatment and so allows the fitment 10 to be used in aseptic packaging applications .
- the natural hoop strength of the downwardly and radially inwardly directed annular rim 28 serves to strengthen the neck structure and prevents the second cylindrical wall 26 from collapsing radially inwards. This added strength may be utilised to permit further decreases in wall thickness thereby enabling further savings in manufacturing costs in terms of the quantity of plastics material needed to mould the closure system.
- annular rim 28 is directed downwardly and radially inwardly provides the advantage that any product left on the rim after dispensing will tend to drain back through the dispensing orifice defined by the bore 32 rather than draining down the outside of the neck portion 12 and onto the treads 36.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200831166T SI2160330T1 (en) | 2007-06-19 | 2008-06-19 | Closure system and its method of forming |
PL08762420T PL2160330T3 (en) | 2007-06-19 | 2008-06-19 | Closure system and its method of forming |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0711838.3A GB0711838D0 (en) | 2007-06-19 | 2007-06-19 | A moulded closure system |
PCT/GB2008/002103 WO2008155552A1 (en) | 2007-06-19 | 2008-06-19 | Closure system and its method of forming |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2160330A1 true EP2160330A1 (en) | 2010-03-10 |
EP2160330B1 EP2160330B1 (en) | 2013-12-18 |
Family
ID=38332364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08762420.1A Active EP2160330B1 (en) | 2007-06-19 | 2008-06-19 | Closure system and its method of forming |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP2160330B1 (en) |
CN (1) | CN101784453B (en) |
AU (1) | AU2008264964B2 (en) |
BR (1) | BRPI0813134B1 (en) |
CA (1) | CA2690645A1 (en) |
DK (1) | DK2160330T3 (en) |
ES (1) | ES2449240T3 (en) |
GB (1) | GB0711838D0 (en) |
MX (1) | MX2009014007A (en) |
PL (1) | PL2160330T3 (en) |
PT (1) | PT2160330E (en) |
RU (1) | RU2461500C2 (en) |
SI (1) | SI2160330T1 (en) |
WO (1) | WO2008155552A1 (en) |
ZA (1) | ZA200909112B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3045574A1 (en) * | 2015-12-22 | 2017-06-23 | Caj Consultants Ltd | SHUTTERING SYSTEM FOR CONTAINER |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE540992C2 (en) * | 2017-06-12 | 2019-02-26 | Nordic Battleland Ab | Reclosure system and the use of such reclosure system |
FR3096968B1 (en) * | 2019-06-07 | 2021-07-23 | Albea Services | Set for closing a tube and tube including this set |
FR3096967B1 (en) * | 2019-06-07 | 2021-06-25 | Albea Services | Set for closing a tube and tube including this set |
TWI807437B (en) * | 2021-09-30 | 2023-07-01 | 宏全國際股份有限公司 | Cut link cover |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3731849A (en) * | 1971-07-23 | 1973-05-08 | Teledyne Mid America Corp | Container and cap combination to indicate tampering |
DE4108453A1 (en) * | 1990-04-07 | 1991-10-10 | Deussen Stella Kg | Screw cap for bottle - has ring attached to lower edge by narrow necks which are broken when cap is unscrewed |
CA2144910A1 (en) * | 1994-08-24 | 1996-02-25 | Gerald L. Roy | Tamper-evident closure |
FR2768131B1 (en) * | 1997-09-10 | 1999-10-08 | Novembal Sa | CAP OF THE PULL-PUSH TYPE WITH REINFORCED INVIOLABILITY |
CN2315066Y (en) * | 1997-09-26 | 1999-04-21 | 美国博得来包装集团公司 | Anti-break bottle cap for sealed container |
-
2007
- 2007-06-19 GB GBGB0711838.3A patent/GB0711838D0/en not_active Ceased
-
2008
- 2008-06-19 SI SI200831166T patent/SI2160330T1/en unknown
- 2008-06-19 DK DK08762420.1T patent/DK2160330T3/en active
- 2008-06-19 PL PL08762420T patent/PL2160330T3/en unknown
- 2008-06-19 CN CN2008800206933A patent/CN101784453B/en active Active
- 2008-06-19 AU AU2008264964A patent/AU2008264964B2/en active Active
- 2008-06-19 MX MX2009014007A patent/MX2009014007A/en active IP Right Grant
- 2008-06-19 EP EP08762420.1A patent/EP2160330B1/en active Active
- 2008-06-19 PT PT87624201T patent/PT2160330E/en unknown
- 2008-06-19 RU RU2010100924/12A patent/RU2461500C2/en active
- 2008-06-19 WO PCT/GB2008/002103 patent/WO2008155552A1/en active Application Filing
- 2008-06-19 CA CA2690645A patent/CA2690645A1/en not_active Abandoned
- 2008-06-19 BR BRPI0813134A patent/BRPI0813134B1/en active IP Right Grant
- 2008-06-19 ES ES08762420.1T patent/ES2449240T3/en active Active
-
2009
- 2009-12-21 ZA ZA2009/09112A patent/ZA200909112B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2008155552A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3045574A1 (en) * | 2015-12-22 | 2017-06-23 | Caj Consultants Ltd | SHUTTERING SYSTEM FOR CONTAINER |
FR3045573A1 (en) * | 2015-12-22 | 2017-06-23 | Caj Consultants Ltd | SHUTTERING SYSTEM FOR CONTAINER |
WO2017108514A1 (en) * | 2015-12-22 | 2017-06-29 | Svalinn Cap Systems Ag | Shutoff system for a container |
RU2730702C2 (en) * | 2015-12-22 | 2020-08-25 | Свалинн Кэп Системз Аг | Vessel sealing system |
Also Published As
Publication number | Publication date |
---|---|
CA2690645A1 (en) | 2008-12-24 |
GB0711838D0 (en) | 2007-07-25 |
PT2160330E (en) | 2014-03-25 |
BRPI0813134A2 (en) | 2014-12-23 |
RU2461500C2 (en) | 2012-09-20 |
SI2160330T1 (en) | 2014-04-30 |
AU2008264964B2 (en) | 2011-04-07 |
CN101784453A (en) | 2010-07-21 |
RU2010100924A (en) | 2011-08-10 |
PL2160330T3 (en) | 2014-05-30 |
MX2009014007A (en) | 2010-08-02 |
ZA200909112B (en) | 2011-03-30 |
CN101784453B (en) | 2012-01-11 |
AU2008264964A1 (en) | 2008-12-24 |
WO2008155552A1 (en) | 2008-12-24 |
DK2160330T3 (en) | 2014-03-17 |
EP2160330B1 (en) | 2013-12-18 |
BRPI0813134B1 (en) | 2019-02-05 |
ES2449240T3 (en) | 2014-03-18 |
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