WO2006118477A1 - Tamper evident or tamper proof cap - Google Patents
Tamper evident or tamper proof cap Download PDFInfo
- Publication number
- WO2006118477A1 WO2006118477A1 PCT/NZ2006/000093 NZ2006000093W WO2006118477A1 WO 2006118477 A1 WO2006118477 A1 WO 2006118477A1 NZ 2006000093 W NZ2006000093 W NZ 2006000093W WO 2006118477 A1 WO2006118477 A1 WO 2006118477A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cap
- engagement means
- tamper
- flange
- frangible
- Prior art date
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
- B65D41/46—Snap-on caps or cap-like covers
-
- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/40—Closure caps
Definitions
- This invention relates to improvements to caps in particular but not exclusively to caps used with aerosol cans.
- Containers generally come in two forms, those that require some form of lid or cap and those that do not. Those that require or otherwise utilise a lid or cap, tend to do so to allow ready access to the contents of the container whilst also providing a means of protecting or preserving the contents of the container from the outside world. However, some containers, for example aerosol cans, and "ball deodorants”, tend to use caps to prevent or reduce to a minimum, any unwanted discharge or loss of the contents of the container.
- the cap for the can As well as the can itself has undergone several changes in design over the last few decades.
- the body of the can usually an elongate cylinder
- the body of the can was provided with an identical concentric flange top and base, ostensibly to protect the get up applied to the body of the can from impact damage during transit.
- the flange top or exterior flange was integral with a dome shaped head of the can.
- the dome was typically provided with a flange head base or interior flange and a flange head top.
- Concentrically located within the flange head top was a spray nozzle operatively connected to a valve member that is liable to accidental discharge through a downward pressure applied to the nozzle unless protected by a cap.
- the first type of cap used with such a can (known as an "over-cap") was an elongate cylinder closed at one end with a flange base mouth adapted to engage with the exterior flange in a complementary manner.
- Such complementary engaging usually in a snap-fit arrangement, was usually provided by a plurality of spaced radial projections located on the interior rim of the mouth. In this way, the cap, once fitted, would prevent depression of a spray nozzle.
- caps were cylindrical and devoid of a flange base. These so-called “snap-lock” caps were provided with a plurality of planar, downwardly projecting, resilient, cantilevered teeth located on the internal rim of the mouth of the cap.
- the exterior sides of the cap transverse to the radial projections are provided with a pair of opposing "U" shaped cut outs so linked to the column as to cause the radial projections to move apart when the cut outs are squeezed, thus allowing the cap to be removed from the can.
- these types of "child-proof caps have become wide spread.
- whipped cream aerosol cans tend to comprise two ingredients, cream and a propellant
- the propellant typically used is nitrous oxide (laughing gas).
- a tamper proof or tamper evident cap for use with a container such as an aerosol can, the cap comprising a body having a proximal top portion and a distal base portion, wherein the cap is provided with a plurality of concentric can engagement means, at least one of the engagement means being adapted to be operatively connectable to one portion of the can, whilst at least another of the engagement means is adapted to be operatively connectable to another portion of the can.
- the distal base portion is provided with the plurality of concentric can engagement means.
- each can engagement means could be so adapted as to engage directly with a can, preferably, at least one can engagement means is adapted to engage directly to the can.
- each of the can engagement means can be adapted to engage or operatively connect with more than one portion of a can, preferably, each can engagement means is adapted to operatively connect with only one portion of a can.
- the portions of a can or can fitment ideally suited to receive an operatively connectable can engagement means are an exterior flange, an interior flange, a flange head top or a dispensing aid such as a spout fitted to a can so whilst the permutations and combinations of can engagement means to can portion, are in reality limited, more preferably, therefore, at least one of the can engagement means is adapted to operatively connect with an exterior flange of a can whilst at least one other can engagement means is adapted to operatively connect with an interior flange of a can.
- At least one of the can engagement means is adapted to operatively connect to an exterior flange of a can whilst at least one other can engagement means is adapted to operatively connect to a can fitment.
- the cap is provided with a frangible portion to enable a portion of the cap provided with one can engagement means to be completely separated from the remainder of the cap.
- One can engagement means may be functionally connected to one or more of the other can engagement means through, for example, opposing surfaces of a wall mutual to both can engagement means.
- this is going to be inevitable if the entire cap is a single piece of plastics material.
- each of the can engagement means shares a mutual aspect, this does not deprive each of the can engagement means of the fact that they are distinct and separate. The issue is more one of what portion of a can or can fitment is each can engagement means intended to engage with.
- one of the can engagement means is designed to remain attached to the can (usually the neck or body) after the frangible portion has been broken. This will provide evidence of tampering as the public will be able to see clearly whether a 'seal' (the frangible portion) has been broken and thus whether someone has had access to such a can.
- the frangible portion is broken by a movement of the cap in a direction that is substantially along a direction of a longitudinal or principal axis of the cap.
- this movement is a linear or rotary action substantially orthogonal or oblique to the radial lines of the circular cap.
- the frangible portion preferably comprises a plurality of sections, more preferably, at least three sections and yet more preferably still, a plurality of sections in the range of 2- 16.
- a knurled portion to assist grip and subsequent frangible portion breakage could be provided as in reality, the frangible portion is going to be broken by bending the cap in a direction substantially orthogonal to the radial axis of a can that it has been attached to. Therefore it would be advantageous to be able to grip the cap in a satisfactory manner to facilitate initial breakage of the frangible portion.
- the cap could be any colour or shape, however, a distinctive shape at least would establish in the minds of the buying public the fact that this is a new type of cap/container combination. Yet more preferably still, the frangible portion is bevelled towards a virtual point below the cap along its longitudinal or principal axis.
- each can engagement means could be identical.
- each of the can engagement means is not identical. In this way, if a frangible portion is broken, one part of the cap could be so designed as to remain affixed to a can that it has been fitted to whilst the other could break away providing a means of tamper-evidence for a can fitted with such a cap.
- a preferred can engagement means is through the use of a plurality of spaced apart teeth adapted to grip a particular aspect of a can. These teeth can vary in number from three to twenty and can be any appropriate shape.
- a continuous inwardly projecting radial rib could be provided to enable some form of snap fit to a complementary designed can fitment (such as a dispensing aid or spout snap fitted to a can) to take place, if this form of can engagement means fits directly to such a can fitment.
- the invention includes within its scope, a tamper proof or tamper evident cap substantially as herein described with reference to and/or as illustrated in any one of the accompanying drawings.
- the invention further includes within its scope a container incorporating a tamper proof or tamper evident cap as specified herein.
- the invention further includes within its scope a container in the form of an aerosol can incorporating a tamper proof or tamper evident cap as specified herein.
- Figure 1 illustrates a front view of a cap showing a minor base portion of the cap connected to a major top portion of the cap via a frangible area.
- Figure 2 illustrates a front view of the cap shown in figure 1 once the frangible area has been broken and the cap has been separated into its major and minor fragments.
- Figure 3 illustrates a sectional view of the cap shown in figure 1 showing both minor and major portions of the cap still connected and also showing the internal arrangement of the major portion of the cap.
- Figure 4 illustrates a sectional view of the cap shown in figure 2.
- Figure 5 illustrates an isometric view of a base end of the cap shown in figures 2 & 4.
- Figure 6 illustrates a sectional view of a container in the form of an aerosol can, fitted with a cap as shown in figure 1.
- Figure 7 illustrates a sectional view of an alternative embodiment of the present invention where one of the can engagement means is not directly fitted to the can but fitted to a spout that is fitted to the can.
- Figure 8 illustrates a sectional view of the cap shown in figure 7 once the frangible area has been broken and the cap has been separated into its major and minor fragments.
- Figure 9 illustrates an isometric view of the cap shown in figures 7 & 8 once the frangible area has been broken and the cap has been separated into its major and minor fragments.
- Figure 10 illustrates an alternative the cap shown in figures 7 & 8 once the frangible area has been broken and the cap has been separated into its major and minor fragments.
- Figure 1 shows a front view of an integral white plastics cap of the present invention formed from the man-made polymer, polypropylene and is generally referenced (1).
- the cap (1) comprises two portions, a major top portion (2,3) and a minor base portion (4,5,6,7,8,9), both joined together via a frangible area (5) to form the cap (1).
- the major top portion (2,3) comprises an elongate, circular dome, (2,3) having a truncated concentric circular top (3) with a single substantially convex parabolic sloping exterior wall (2) that is integral to and depending from the entire circumferential periphery of the top (3), to form a closed end for the cap (1) at the top of the portion (2,3) and a concentric circular open end or mouth that is parallel with the top (3) at the base of the portion (2,3).
- the sloping wall (2) is provided with a point of inflection towards the base of the portion (2,3) denoted by the dotted line "A" that is parallel with the top (3).
- this point of inflection "A” separates the cap (1) into two distinct portions, a proximal top portion and a distal base portion.
- a further point of inflection at the very base of the portion (2,3) is denoted by the dotted line "B" which is also parallel with the truncated top (3).
- the minor base portion (4,5,6,7,8,9) comprises a flat circular ring for a base that is concentric with, greater in diameter to and parallel with the top (3) and is provided with a wall (4) whose exterior surface is uniform and cylindrical, that rises from the base and terminates with the start (8) of a truncated dome (5,6,7,8,).
- the top of the dome (5,6,7,8,) is castellated to form a series of six substantially equally spaced apart, substantially rectangular peaks (6) and six corresponding troughs (7), the longer sides of each peak (6) and trough (7) being parallel with the top (3) and the dimensions of each peak (6) and trough (7) being substantially equal.
- the frangible area (5) coincident with point of inflection "B" connects the major top portion (2,3) with the minor base portion (4,5,6,7,8,9) via a wasted section located at "B" that overlies the upper most longest side of each peak (6).
- FIG 2 this shows the cap (1) separated along the frangible area (5) into its two component portions, the major top portion (2,3) and the minor base portion (4,5,6,7,8,9).
- a uniform internal wall (12) is revealed in figure 2.
- This internal wall (12) is cylindrical, commences at the point of inflection "A” and depends vertically downwards from the major portion (2,3) and terminates at a point some where between inflection point "B" and the base of the wall (4).
- Figure 3 shows a section of figure 1 which reveals the entire internal arrangement of the cap (1) from the top (3) to the base of the wall (4).
- the major top portion (2,3) of figure 3 shows an annular arrangement of fourteen downwardly depending, resilient, radially spaced apart, concentric, identical rectangular teeth (10) that are cantilevered out from the start of the interior surface of the internal wall (12), the cantilever angle being denoted by the Greek letter ⁇ which is 35°.
- the minor base portion (4,5,6,7,8,9) of figure 3 is provided with an annular continuous projection (9) of uniform cross-section along the internal wall of, and parallel with the base of the wall (4), the mid point of the projection (9) being substantially coincident with the base end of the wall (12).
- Figure 4 shows the cap as shown in figure 3 after it has been broken along the frangible area (5) to reveal the fully and bevelled surface (11).
- the wasted sections of the surface (11) that are coincident with the ridge tops of the peaks (6) of the truncated dome (8) of the minor base portion (4,5,6,7,8,9) are only located where they oOverlie the ridge tops.
- Figure 5 shows an isometric view of the cap after it has been broken along the frangible area (5).
- Figure 6 shows a section of a typical modern aerosol can (28) formed using the technique of so-called “spin-necking" that is fitted with the integral- cap (1) prior to a breakage of the frangible portion (5).
- the can (28), typical of those in the market place, has an exterior flange (26) (or can flange neck) and an interior flange (27) (or can flange shoulder).
- direct fitment of the cap (1) to the can (28) occurs when the projection (9) and exterior surface of the internal wall (12) initially resiliently passes over the surface that makes up one portion of the can (1), the can flange neck (26). This links the can top (25) to the can body. Fitment may be carried out by first warming the cap (1) to enable it to expand slightly and to make it more flexible.
- Cooling of the cap (1) further locks it into place.
- the flange neck (26) is to all intents and purposes captured and surrounded by a surface of the walls (4 & 12) and the projection (9). In this way, these features (4,9,12) together serve as one type of can engagement means that operatively connect the cap (1) to the can (28) by direct engagement.
- each of the resilient teeth (10) initially radially flex outwards to narrow the angle ⁇ of each tooth (10), as they pass over another portion of the can, the can flange shoulder
- teeth (10) and the interior surface of the wall (12) to which they are integral with act as a second, separate and distinct type of can engagement means that operatively connect the cap (1) to the can (28) by direct engagement.
- teeth are used as opposed to a rib.
- the cap (1) is "snap locked" to the can (28) in two positions using two can engagement techniques, one that is relatively difficult to remove (4,9,12) and one that is relatively easy to remove (10,12).
- the teeth (10) are separated by a number of substantially equally spaced gaps which allow a greater degree of independent movement of each tooth (10) as opposed to the walls (4,12) and projection (9) which are all single continuous bands which limit any independent movement of any aspect of these features relative to another aspect of these same features.
- the major top portion (2,3) is lifted or bent/rotated relative to the longitudinal or principal axis of the can (28) and as it is so moved, the minor base portion (4,5,6,7,8,9) remains trapped or locked around the exterior flange (26) of the can (28) allowing the frangible area (5) to subsequently break, thus allowing the major top portion (2,3) of the cap (1) to be removed from the can (28).
- the teeth (10) as a result of their more flexible degrees of movement, are (as opposed to being trapped like the other can engagement means (4,9,12)) able to resiliency flex outwards once again allowing the major top portion of the cap (1) to be removed from the can (28).
- the major top portion (2,3) of the cap (1) can still mate with the flange shoulder (27) to "reseal” the now no longer integral cap (1) to the can (28) as the teeth (10) are still able to flex around and subsequently "snap-lock" around the interior metal flange (27) of the can (28).
- This arrangement of a frangible area (5) is a new form or "tamper-evident" means that will deter someone from ripping the cap (1) off of an aerosol can (28), as it will be visibly clear to a third party that such an act has occurred.
- Figure 7 shows a sectional view of an alternative embodiment of the cap (1).
- the minor base portion (4,5,6,7,8,9) is identical to the previous embodiment and so is its means of fitment to the can (28) and thus will not be described further.
- the other can engagement means (33,34) comprises a concentric circular columnart- wall (33) that downwardly depends from the internal side wall of the major top portion (2,3).
- the internal face of the wall (33) terminates with a continuous inwardly radially projecting rib (34) of similar dimensions throughout its circumference.
- This rib (34) is designed to snap fit over a complementary sloping wall 32.
- the wall (32) forms part of a plastics spout 30 that is "snap lock" fitted to the flange head top (29) of the can (28) via a rib (31) in a similar manner to how the rib (9) "snap locks" the cap (1) to the can (28).
- At least one of the can engagement means (33,34) does not fit directly to the can (28), but instead, fits to the can fitment fitted to the can (28).
- cap (1) it may yet be possible to so design the cap (1) so that the more flexible of the two can engagement means could be designed to engage directly with the flange head top (29) of the can (28).
- the other or indeed even a third can engagement means downwardly depending from either the interior surface of the top (3) or radially extending from the internal wall (2) that is also flexible, could be used to operatively connect to the flange head top (29) or the spout (30).
- This invention may also be broadly be said to consist in the parts, elements and features referred to or indicated in the specification of the application, individually or collectively, and any or all combinations of any two or more parts, elements or features, and where specific integers are mentioned herein which have known equivalents, such equivalents are deemed to be incorporated herein as if individually set forth.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006241585A AU2006241585A1 (en) | 2005-05-02 | 2006-05-02 | Tamper evident or tamper proof cap |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ53975405A NZ539754A (en) | 2005-05-02 | 2005-05-02 | Tamper proof and tamper evident cap for aerosol can |
NZ539754 | 2005-05-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006118477A1 true WO2006118477A1 (en) | 2006-11-09 |
WO2006118477A8 WO2006118477A8 (en) | 2007-01-18 |
Family
ID=37308199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NZ2006/000093 WO2006118477A1 (en) | 2005-05-02 | 2006-05-02 | Tamper evident or tamper proof cap |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2006241585A1 (en) |
NZ (1) | NZ539754A (en) |
WO (1) | WO2006118477A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2481436A (en) * | 2010-06-24 | 2011-12-28 | Silvia Romana Marabini | Chime attachment means and tamper evident cap |
CN102216172B (en) * | 2008-11-17 | 2012-11-28 | 雷克特和科尔曼(海外)有限公司 | A bottle with a tamper-proof cap |
DE102012112568A1 (en) * | 2012-12-18 | 2014-06-18 | Mipa Ag | Lid unit for aerosol paint spray and aerosol paint spray can |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3724724A (en) * | 1972-01-27 | 1973-04-03 | Plastics Corp Sunbeam | Tamperproof and childproof overcap for an aerosol can |
GB1465287A (en) * | 1973-11-27 | 1977-02-23 | Oreal | Dispensing container and presentation cap therefor |
GB1511582A (en) * | 1976-05-19 | 1978-05-24 | Plaspharm Ltd | Tamperproof seals |
US5341947A (en) * | 1990-09-12 | 1994-08-30 | Nestec S.A. | Tamper-evident device for container closures |
US5413235A (en) * | 1994-09-28 | 1995-05-09 | Decelles; Gilles | Tamper-evident closure |
GB2305167A (en) * | 1993-03-10 | 1997-04-02 | Portola Packaging Inc | Cap with plugging and sealing cooperation with container neck lip |
GB2312423A (en) * | 1993-03-10 | 1997-10-29 | Portola Packaging Inc | Snap-on, screw-off cap and container neck |
WO2001064549A2 (en) * | 2000-03-01 | 2001-09-07 | Two Be Sales 29Cc (Ck 99/69002/23) T/A Innovative Plastic Designs | Tamper indicator for aerosol-type containers |
-
2005
- 2005-05-02 NZ NZ53975405A patent/NZ539754A/en unknown
-
2006
- 2006-05-02 AU AU2006241585A patent/AU2006241585A1/en not_active Abandoned
- 2006-05-02 WO PCT/NZ2006/000093 patent/WO2006118477A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3724724A (en) * | 1972-01-27 | 1973-04-03 | Plastics Corp Sunbeam | Tamperproof and childproof overcap for an aerosol can |
GB1465287A (en) * | 1973-11-27 | 1977-02-23 | Oreal | Dispensing container and presentation cap therefor |
GB1511582A (en) * | 1976-05-19 | 1978-05-24 | Plaspharm Ltd | Tamperproof seals |
US5341947A (en) * | 1990-09-12 | 1994-08-30 | Nestec S.A. | Tamper-evident device for container closures |
GB2305167A (en) * | 1993-03-10 | 1997-04-02 | Portola Packaging Inc | Cap with plugging and sealing cooperation with container neck lip |
GB2312423A (en) * | 1993-03-10 | 1997-10-29 | Portola Packaging Inc | Snap-on, screw-off cap and container neck |
US5413235A (en) * | 1994-09-28 | 1995-05-09 | Decelles; Gilles | Tamper-evident closure |
WO2001064549A2 (en) * | 2000-03-01 | 2001-09-07 | Two Be Sales 29Cc (Ck 99/69002/23) T/A Innovative Plastic Designs | Tamper indicator for aerosol-type containers |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102216172B (en) * | 2008-11-17 | 2012-11-28 | 雷克特和科尔曼(海外)有限公司 | A bottle with a tamper-proof cap |
GB2481436A (en) * | 2010-06-24 | 2011-12-28 | Silvia Romana Marabini | Chime attachment means and tamper evident cap |
DE102012112568A1 (en) * | 2012-12-18 | 2014-06-18 | Mipa Ag | Lid unit for aerosol paint spray and aerosol paint spray can |
EP2746189A1 (en) * | 2012-12-18 | 2014-06-25 | Mipa AG | Cover unit for an aerosol spray can and aerosol spray can |
Also Published As
Publication number | Publication date |
---|---|
WO2006118477A8 (en) | 2007-01-18 |
AU2006241585A1 (en) | 2006-11-09 |
NZ539754A (en) | 2007-11-30 |
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