WO2011051302A1 - Patte - Google Patents

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Publication number
WO2011051302A1
WO2011051302A1 PCT/EP2010/066196 EP2010066196W WO2011051302A1 WO 2011051302 A1 WO2011051302 A1 WO 2011051302A1 EP 2010066196 W EP2010066196 W EP 2010066196W WO 2011051302 A1 WO2011051302 A1 WO 2011051302A1
Authority
WO
WIPO (PCT)
Prior art keywords
tab
handle
bistable
state
arms
Prior art date
Application number
PCT/EP2010/066196
Other languages
English (en)
Inventor
Brian Fields
Brendan Keane
Andrew Williams
Original Assignee
Crown Packaging Technology, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crown Packaging Technology, Inc. filed Critical Crown Packaging Technology, Inc.
Publication of WO2011051302A1 publication Critical patent/WO2011051302A1/fr

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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
    • B65D2517/5072—Details of hand grip, tear- or lift-tab
    • B65D2517/5083—Details of hand grip, tear- or lift-tab with means facilitating initial lifting of tape, e.g. lift or pull-tabs

Definitions

  • the invention relates to a tab which is suitable for use with conventional easy open metal can ends that have a score line defining a wholly or partly removable panel portion. Part of the tab is adapted to be deformable, prior to rupture of the score line, to provide enhanced finger access under the tab.
  • Easy-open can ends are well known in the field of can manufacture - for example, that described and shown in figures 4 & 5 of US 5413241 (YEH HSI-SHOU) 09/01/1995 .
  • the can end is provided with an end panel provided with a score line defining a prearranged opening area.
  • a tab is secured to the end panel, with the nose of the tab located adjacent the score line.
  • the handle of the tab is located against the outer surface of the end panel. It would remain in this position after attachment of the can end to a can body - as is normal practice for virtually all current easy-open can ends.
  • WO 03/104092A discloses a can end having a collapsible protrusion under the handle of the tab.
  • the collapsible protrusion initially protrudes upward from the can end to define a minimal (or zero) gap between the tab and the protrusion ⁇ providing efficient stackabifity of one can end upon another for storage/transportation purposes), but is deformable downwards from the tab to define a concave finger well under the handle of the tab sufficient for a user to insert their finger ⁇ providing finger access under the tab and ease of opening by a consumer).
  • the collapsible protrusion of WO 03/104092A has to occupy a substantial area of the can end in order to define a finger well of sufficient depth to permit a consumer to insert their finger under the handle of the tab.
  • WO 03/104092A are exposed to positive pressure (i.e. where the pressure within the container is greater than that outside), the protrusion can easily revert into its upward state, thereby removing any clearance under the tab and hindering tab access.
  • Positive pressure may arise due to the environment in which containers incorporating the can end are stored, or due to the nature of the product stored within the container. For example, carbonated beverage products provide continual positive pressure. Alternatively, certain food products may expel gases during their storage. Additionally, in the case of containers for housing food products requiring sterilisation, the heat generated from retort processing can result in a build-up of positive pressure within the container.
  • the protrusion of WO 03/104092A is a non-planar surface, which can present a difficult surface on which to print logos, images or instructions.
  • JP 2001341740 A WATANABE KAZUYOSHI ET AL 1 1/12/2001
  • a can end having a tab secured to an end panel, the tab having a nose and a handle disposed on either side of the attachment location of the tab to the end panel.
  • the handle of the tab defines a convex profiled button and biases the far end of the handle of the tab against the surface of the end panel.
  • the convex profiled button is deformable downwards to transform into a second state in which the button is concavely profiled and inclines the far end of the handle of the tab away from the surface of the end panel to define a gap under the tab handle.
  • a tab for severing the score line of an easy open can end having a nose and a handle, the tab adapted to be secured to an end panel of such a can end, the tab comprising a bistable portion which, in use and before rupture of the score line, is deformable from a predetermined first state to a predetermined second state, the bistable portion being adapted such that deformation of the bistable portion from first to second states tilts all or part of the handle of the tab upwardly relative to the end panel to define a gap between the handle of the tab and the underlying surface of the can end suitable for finger access; characterised in that the tab further comprises the features of either of the following two options:
  • the tab comprises two elongate bistable arms extending for a distance between the nose and the handle of the tab and disposed on either side of the tab's longitudinal axis, the tab adapted such that, in use, in the first state the elongate bistable arms are flexed to bias the handle of the tab against the underlying surface of the end panel, the tab further comprising a downwardly depressable portion co-operable with the elongate bistable arms such that activation of the downwardly depressable portion laterally twists the bistable arms, the twisting motion transforming the arms into the second state in which they bias the handle of the tab away from the underlying surface of the end panel;
  • the handle of the tab comprises a cut-out section to define a ring-shaped handle, the ring-shaped handle comprising the bistable portion, the bistable portion comprising a hinge point and two adjoining portions each extending outwardly from the hinge point, the hinge point being upwardly moveable to flip:
  • Options 1 and 2 define two forms that the bistable portion of the invention may take.
  • the elongate bistable arms extend between i) a location just behind the point at which the tab is secured to the end panel and ii) the handle of the tab.
  • the nose is regarded as being at the front end of the tab and the handle is regarded as being at the rear end of the tab.
  • the invention relies upon deformation of part of the tab itself to provide finger access under the handle of the tab prior to rupture of the score line. This is a completely different mechanism to that disclosed in
  • WO 03/104092A which relies on the can end itself having a deformable finger well (the "collapsible protrusion").
  • the invention can therefore provide finger access when used on easy open can ends, without the need for a dedicated finger well on the can end itself.
  • the tab of the invention can equally be applied to can ends that do have a finger well, whether fixed or moveable (as disclosed in WO 03/104092A).
  • underlying surface of the end panel provides the advantage of maximising the stackability of can ends which incorporate the tab of the invention, by minimising the likelihood of interference between the handle of the tab secured to one can end and the end panel of an adjacent can end placed above. This maximises the packing density of a stack of can ends incorporating the tab of the invention during storage and transportation.
  • the elongate arms may be spaced apart and profiled to define a ring section in the handle of the tab suitable for a user to engage their finger.
  • the hinge point is centrally located at the rear end of the ring-shaped handle on the tab's longitudinal axis.
  • the hinge point is centrally located at the rear end of the ring-shaped handle on the tab's longitudinal axis.
  • the tab is generally envisaged to be made of any conventional metal used in the manufacture of tabs for packaging.
  • the bistability concept is not material specific and therefore the invention is not limited to specific categories or grades of materials.
  • the tab is adapted to be incorporated onto a can end. It is most preferred that when incorporated onto a can end, in the first state no part of the tab extends above the uppermost plane defined by the can end. This latter feature of the invention helps to reduce the risk of damage to the tab during transportation of i) can ends of the invention or ii) containers which incorporate the can ends of the invention, because the tab, in effect, remains recessed below the uppermost plane of the can end. Where the can end is adapted to be fastened onto a can body by seaming, the uppermost plane of the can end is conveniently defined by a seaming panel of the can end.
  • FIGURE 1 is a perspective view of a can end incorporating a tab according to a first embodiment of the invention and showing the tab in a first predetermined state.
  • FIGURE 2 corresponds to figure 1 , but showing the tab in its second
  • FIGURE 3 is a perspective view of a can end incorporating a tab according to a second embodiment of the invention and showing the tab in a first predetermined state.
  • FIGURE 4 corresponds to figure 3, but showing the tab in its second predetermined state.
  • FIGURE 5 shows a can end according to the invention located relative to a container body.
  • Can end 1 includes an end panel 2 provided with a score line 3.
  • score line 3 defines a prearranged opening area (an aperture), whereby (in the embodiment illustrated) the whole of the end panel 2 inwards of the score line would be removable from the can end 1.
  • a countersink 4 is located radially outward of the score line 3 (see figure 1 ).
  • a chuck wall 5 extends first upwardly from the bottom of the countersink 4, and then outwardly to define seaming panel 6 (see figure 1 ).
  • the end panel 2 includes strengthening beads 7 to improve the rigidity of the end panel.
  • Tab 10 is secured to the end panel 2 by means of a rivet 50. One end of the tab 10 is provided with a nose 1 1 located adjacent the score line 3. The opposite or rear end of the tab 10 has a handle 12.
  • Figure 1 shows the tab 10 in a first state, in which the elongate arms 13 are flexed to bias the handle 12 of the tab against the portion of the end panel 2 underlying the handle.
  • the tab 10 also includes a tongue section 15. As can be seen from
  • the tongue section 15 extends behind the rivet 50 upwardly and in the general direction of the tab's longitudinal axis 14 towards the handle 12 of the tab 10.
  • the tongue section 15 defines a downwardly depressable button.
  • the tongue section 15 is an integral part of the tab 10 and blends in with the elongate arms 13 via a platform 16. In the first state, this platform 16 is raised slightly above the adjacent region of the tab 10 (see figure 1).
  • the tab 10 is adapted for optimum stackability of one can end upon another, with the handle 12 of the tab pressing against the underlying surface of the end panel 2. No part of the tab 10 extends above the level of the seaming panel 6 in this first state. Also, in this first state the risk of foreign objects being caught between the tab handle 12 and the end panel 2 is minimised. It is envisaged that the can end 1 would remain in this state all the way through from manufacture to fastening to a container body, to placement of the container on a supermarket shelf.
  • a gap 'hi' is defined between the handle 12 and the underlying surface of the end panel 2 (see figure 2).
  • deformation of the elongate arms 13 from first to second states causes the tab handle 12 to tilt or pivot upwardly relative to the tab nose 1 1 and end panel 2 to thereby provide finger access under the handle (indicated by 'hi' on figure 2).
  • a user is then able to engage their finger fully with the tab handle 12 to lift and pivot the handle about the rivet 50, and thereby cause the tab nose 1 1 to rupture the score line 3.
  • Figures 3 & 4 show a second embodiment of the invention, with like
  • the can end 1 is identical to those in figures 1 & 2, but having a different tab.
  • the tab 10 incorporates a nose 1 1 and a handle 12.
  • the handle 12 is ring-shaped - similar to the embodiment of figures 1 & 2.
  • the ring-shaped handle 12 of this second embodiment includes a bistable portion 18 located approximately between points 'a' and 'b' on figures 3 & 4.
  • the bistable portion 18 is symmetrically disposed about the tab's longitudinal axis 14, having a hinge point 'c' located at the rear end of the tab handle 12.
  • Figure 3 shows the tab 10 in its first state, in which the hinge point 'c' is downwardly disposed relative to the adjoining parts ('c-a' and 'c-b') of the bistable portion 18, these adjoining parts extending outward from the hinge point 'c' to points 'a' and 'b' respectively.
  • no part of the tab 10 extends above the level of the seaming panel 6.
  • a minimal or zero gap is provided between the tab handle 12 and the underlying surface of the end panel 2.
  • this first state minimises the risks of foreign objects becoming caught between the tab handle 12 and the end panel 2.
  • the can end 1 would remain in this state all the way through from manufacture to fastening to a container body, to placement of the container on a supermarket shelf.
  • first and second states causes the adjoining parts 'c'-'a' and 'c'-'b' to tilt about points 'a' and 'b'.
  • a gap ' i2' is defined between the tab handle 12 and the underlying surface of the end panel 2 (see figure 4).
  • deformation of the hinge point 'c' of the bistable portion 18 from first to second states causes the tab handle 12 to tilt or pivot relative to the end panel 2 to thereby provide finger access under the handle (indicated by ' i2' on figure 4).
  • Figure 5 shows the can end 1 of the second embodiment located relative to a container body 20.
  • the container body 20 is flared 21 at one end.
  • the can end 1 would be seamed to the container body by engagement of the flared portion 21 of the container body 20 with the seaming panel 6 of the can end 1.
  • This form of fastening of can end 1 to container body 20 is equally applicable to the first embodiment of the invention.
  • other forms of fastening which are known with the field of can manufacture may be used, dependent on the specific features of the can end and container body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Abstract

La présente invention concerne une patte (10) adaptée à être utilisée avec des extrémités de canettes métalliques à ouverture facile traditionnelles (1) qui présentent une pliure définissant une partie panneau entièrement ou partiellement amovible. La patte (10) présente une partie bistable, qui est déformable lors de l'utilisation d'un premier état prédéterminé à un second état prédéterminé, de façon à incliner la poignée (12) de la patte en s'éloignant de la surface de l'extrémité de canette sous-jacente (1).
PCT/EP2010/066196 2009-10-27 2010-10-26 Patte WO2011051302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0918825.1 2009-10-27
GBGB0918825.1A GB0918825D0 (en) 2009-10-27 2009-10-27 Tab

Publications (1)

Publication Number Publication Date
WO2011051302A1 true WO2011051302A1 (fr) 2011-05-05

Family

ID=41426771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/066196 WO2011051302A1 (fr) 2009-10-27 2010-10-26 Patte

Country Status (2)

Country Link
GB (1) GB0918825D0 (fr)
WO (1) WO2011051302A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61183822U (fr) * 1985-05-09 1986-11-17
US5413241A (en) 1994-04-15 1995-05-09 Yeh; Hsi-Shou Easy-open can end
JPH11122001A (ja) 1997-10-20 1999-04-30 Fujitsu General Ltd 直交偏波共用フィードホン
JP2001341740A (ja) 2000-06-01 2001-12-11 Watanabe Kazuyoshi つまみ部はね上げ式プルタブ
WO2003104092A1 (fr) 2002-06-11 2003-12-18 Maeil Dairy Industry Co., Ltd. Couvercle de boite a ouverture facile
WO2005026004A1 (fr) * 2003-09-15 2005-03-24 Nicolas De Bruyne Systeme d’ouverture refermable pour canettes
GB2459387A (en) * 2008-04-24 2009-10-28 Sarbjit Singh Bansia Bistable pull tab

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61183822U (fr) * 1985-05-09 1986-11-17
US5413241A (en) 1994-04-15 1995-05-09 Yeh; Hsi-Shou Easy-open can end
JPH11122001A (ja) 1997-10-20 1999-04-30 Fujitsu General Ltd 直交偏波共用フィードホン
JP2001341740A (ja) 2000-06-01 2001-12-11 Watanabe Kazuyoshi つまみ部はね上げ式プルタブ
WO2003104092A1 (fr) 2002-06-11 2003-12-18 Maeil Dairy Industry Co., Ltd. Couvercle de boite a ouverture facile
WO2005026004A1 (fr) * 2003-09-15 2005-03-24 Nicolas De Bruyne Systeme d’ouverture refermable pour canettes
GB2459387A (en) * 2008-04-24 2009-10-28 Sarbjit Singh Bansia Bistable pull tab

Also Published As

Publication number Publication date
GB0918825D0 (en) 2009-12-09

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