WO2007056844A1 - Fermeture terminale d’un recipient munie d’une tirette - Google Patents

Fermeture terminale d’un recipient munie d’une tirette Download PDF

Info

Publication number
WO2007056844A1
WO2007056844A1 PCT/CA2006/001803 CA2006001803W WO2007056844A1 WO 2007056844 A1 WO2007056844 A1 WO 2007056844A1 CA 2006001803 W CA2006001803 W CA 2006001803W WO 2007056844 A1 WO2007056844 A1 WO 2007056844A1
Authority
WO
WIPO (PCT)
Prior art keywords
rivet
end closure
protrusions
protrusion
panel
Prior art date
Application number
PCT/CA2006/001803
Other languages
English (en)
Inventor
Robert G. Dickie
Original Assignee
Sparktab 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 Sparktab Inc. filed Critical Sparktab Inc.
Publication of WO2007056844A1 publication Critical patent/WO2007056844A1/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
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0011—Action for opening container push-down tear panel
    • 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
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0068—Ribs or projections in container end panel
    • B65D2517/007—Ribs or projections in container end panel located within tear-out/push-in panel
    • 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
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0068—Ribs or projections in container end panel
    • B65D2517/0071—Ribs or projections in container end panel located externally of tear-out/push-in panel or preformed opening

Definitions

  • the invention relates to containers and pull tab openers therefore.
  • the invention relates to a pull tab opener formed with one or more protrusions in the central panel portion of the end closure approximate the rivet which reduce the force required to lift up the back end of the tab for subsequent breakage of the frangible panel from the end closure.
  • Free lift is referred to in the container art as the force required to lift up the back of the tab until the tab nose begins to press down on the frangible panel.
  • This free lift is an ergonomic feature to allow one to get the end of ones finger under the tab end for leverage for lifting the tab and breaking the frangible panel.
  • this free lift is not as easy as desired in the container industry, and that numerous attempts have been made to reduce this free lift force without weakening the end closure and components thereof.
  • the tabs must sit tight to the lids during can manufacturing to prevent interference with the canning equipment and must stay properly aligned for subsequent breakage of the frangible panel.
  • the present invention is believed to provide for an enhanced container end closure which reduces the free lift force in a simple and effective manner without materially changing the usual construction of the end closure, and which avoids any adverse effect during can end manufacture and subsequent attachment of the end closure to a filled container.
  • One aspect of the present invention is to provide a container end closure primarily for beverage containers, in which one or two C-shaped or crescent-shaped protrusions are formed in the central panel of the end closure located closely adjacent about the rear of the rivet, which protrusions will lessen the free lift forces required to lift the rear end of the tab, enabling the tab end to more easily be raised up and then pivoted about the rivet, whereby the nose of the tab engages the frangible panel.
  • a further aspect of the present invention is to arrange the crescent-shaped protrusions concentrically with respect to each other and concentrically about the rivet, with each of the protrusions having an arcuate length of approximately 180°, and in which the ends of the protrusions lie on an imaginary line extending through the center of the tab rivet.
  • a still further feature of the present invention is to form the crescent-shaped protrusions whereby the top center of the first protrusion is approximately 0.20 inches from the center of the rivet with the top center of the second protrusion lying approximately 0.25 inches from the center of the rivet, which distances are closer than the heretofore prior art protrusions and indentations to facilitate the pulling up of the rivet from the central panel to lessen the free lift forces and allow the rear of the tab to be more easily raised up prior to the nose of the rivet engaging the frangible panel.
  • a further feature of the present invention is to provide the crescent-shaped protrusions with a height of approximately .010 inches when the thickness of the end panel metal, when formed of aluminum, is approximately .007 inches.
  • a further feature of the invention is that the location of a first and/or second protrusion is either within an opening of the pull tab or beneath the pull tab to prevent interference with the can manufacturing equipment and to permit the tab to lay relatively flat against the end panel.
  • the easy opening end closure of the present invention comprising: a central panel having a product side and a public side and a tear panel defined by a score line wherein said tear panel is to be at least partially separated from the central panel to form an opening in said end closure; a rivet disposed on the central panel; a pull tab hingedly secured to the rivet, said pull tab having a nose at one end overlying the tear panel and a lift end on an opposing end, at least one opening formed in the opposing end of the pull tab; and a first crescent-shaped protrusion formed in the central panel proximate the rivet and disposed under either the lift end of the tab or within the opening formed therein.
  • Fig. 1 is a top perspective view of the container end closure with the pull tab secured thereon.
  • Fig. 2 is an exploded perspective view of Fig. 1 showing the pull tab removed from the end panel.
  • Fig. 3 is an enlarged fragmentary top perspective view of the end panel with the pull tab removed.
  • Fig. 4 is an enlarged top plan view of the end panel and pull tab as shown in Fig. 1.
  • Fig. 5 is a sectional view taken on line 5-5, Fig. 4.
  • Fig. 5A is a greatly enlarged fragmentary view of the encircled portion of Fig 5.
  • Fig. 6 is a top perspective view of a second embodiment of the container end closure.
  • Fig. 7 is an exploded perspective view of Fig. 6 with the pull tab removed from the end panel.
  • Fig. 8 is an enlarged fragmentary top perspective view of the second embodiment of Fig. 6 with the pull tab removed from the end panel.
  • Fig. 9 is an enlarged top plan view of the end panel and pull tab as shown in Fig. 6.
  • Fig. 10 is a sectional view taken on line 10-10, Fig. 9.
  • Fig. 10A is a greatly enlarged fragmentary view of the encircled portion of Fig. 10.
  • Fig. 1 1 is a top plan view of the first embodiment of Figs. 1 -5 with the pull tab shown in dot dashed lines on the end panel.
  • Fig. 12 is a top plan view of the second embodiment of Figs. 6-10 with the pull tab shown in dot dashed lines on the end panel.
  • End closure 1 includes a central panel 3 having a generally circular shape which includes a circumferentially extending raised side wall 5 having an edge 7 for attaching end closure 1 to a suitable cylindrical container (not shown) in a manner well-known in the art.
  • end closure 1 will be formed of aluminum with central panel 3 having a thickness of approximately .007 inches.
  • a usual tear panel 9 is formed in central panel 3 and defined by a frangible score line 1 1.
  • Tear panel 9 includes a usual curved D-shaped protrusion 13 having an inner curved portion 15 which closely aligns with the curved outer end 17 of tab nose 19 of a usual pull tab, indicated generally at 21 .
  • Tab 21 is of a usual construction well-known in the beverage can art, having nose 17 and a rear curved lift end 23. Lift end 23 is grasped by a user which positions their fingers under the end and partially into an adjacent circular opening 25.
  • the opposite end of the pull tab includes nose 19 which is used to drive the tear panel 9 downwardly when the pull tab lift end 23 is pulled upwardly and hingedly pivots tab 21 about a pull tab rivet 29.
  • Rivet 29 is formed integrally in central panel 3 and is attached to tab 21 by usual metal staking operation as it extends through a circular hole 31 formed in a forward end of tab 21.
  • Hole 31 is formed in an arcuate-shaped hinge portion 33 which is partially circumscribed by an arcuate-shaped cutout 35 formed in tab 21.
  • arcuate cutout 35 is separated from tab opening 25 by a solid material cross member 37 of pull tab 21.
  • This pull tab attachment construction is well- known in the container end closure art and thus is not described in further detail.
  • a generally C- shaped or crescent-shaped protrusion or depression, hereinafter referred to as protrusion 41 is formed in central panel 3, and in particular in the oval-shaped recessed portion 43 of central panel 3 in which the pull tab tear panel, score line and other components of the easy opening can end tab are located.
  • Protrusion 41 preferably has an arcuate length in the range of from 140° to 180° and partially circumscribes rivet 29. Protrusion 41 preferably has an arcuate length of 180°.
  • the ends of protrusion 41 as shown in Fig. 11 lie on an imaginary line 57 which extends through midpoint 55 of rivet 29.
  • protrusion 41 has a height 45 as shown in Fig. 5A which is approximately .010 inches when the thickness of central panel 3 is approximately .007 inches.
  • the top center midpoint of protrusion 41 lies a distance indicated at D1 , from the top center midpoint 55 of rivet 29, approximately 0.20 inches.
  • a modified enclosure is indicated generally at 51 , and is shown in particular in Figs. 6-10 and 12.
  • Enclosure 51 is similar in many respects to that of end closure 1 , and thus is not described in further detail except for the addition of a second protrusion 53.
  • Protrusion 53 has a similar C-shape or crescent-shape configuration as protrusion 41 and is located concentrically with respect to protrusion 41 as shown in Fig. 8.
  • Protrusion 53 also extends throughout an arc of 180° and the ends thereof lie on the same imaginary line 57 as do the ends of protrusion 41 as best shown in Fig. 12. As shown in Fig.
  • protrusion 53 has a height 55 which preferably is the same as height 45 of protrusion 41 , that is, .010 inches when central panel 3 has a thickness of approximately .007 inches. Furthermore, in accordance with the invention, the top center midpoint of protrusion 53 is located a distance D2, approximately 0.25 inches from the top midpoint of rivet 29, as shown in Fig. 10A.
  • inner protrusion 41 lies completely within arcuate cutout 35 of tab 21 , as shown in Figs. 4 and 9, with outer protrusion 53 lying beneath the solid material cross member 37 of pull tab 21 as shown in Figs. 9 and 12. This prevents either of the protrusions from coming into contact with the various tab-staking equipment and transfer mechanisms used when forming end closures 1 and 51 , and the subsequent equipment used for seaming the end closures onto a filled container. It also enables the pull tab to remain relatively flat against the central panel as is required for use with existing can manufacturing equipment.
  • protrusion 41 and the pair of protrusions 41 and 53 at the relatively close locations rearwardly of tab 29, that is, a distance of approximately 0.20 inches and 0.25 inches respectively, and their concealment and protection within arcuate cutout 35 and beneath tab cross member 37, provides for reduction in the free lift force and prevents the protrusions from hampering the use of existing can-making equipment, enabling the tab to remain in its designed flat condition within recess 43 of the end closure.
  • protrusion 41 and the pair of protrusions 41 and 53 enables the rivet to lift upwardly more easily thereby lessening the free lift force on tab end 23, allowing the rear of the tab to be more easily raised up followed by the subsequent engagement of the nose end of the tab against the tear panel than believed heretofore possible with existing pull tabs having various types of projections and protrusions formed in the end panel adjacent the rear of the rivet.
  • protrusions 41 and 53 have substantially flat top outer surfaces and are separated by a substantially flat arcuate surface portion 59 of central panel 3. Also, protrusions 41 and 53 are formed independently on central panel 3 and are free of any connecting members or portions therebetween, except for arcuate portion 59.

Landscapes

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

Abstract

La présente invention concerne une fermeture terminale à ouverture facile, destinée à un récipient, qui comprend un panneau central doté d’un panneau d’arrachage défini par une ligne de rupture. Une tirette est fixée au panneau central à l’aide d’un rivet et possède une extrémité nez destinée à introduire le panneau d’arrachage et une extrémité à lever opposée destinée à pivoter la tirette autour du rivet afin de briser la ligne de rupture. Une seule ou une paire de saillies en forme de croissant sont formées sur le panneau central à proximité et vers l’arrière du rivet afin de réduire la force de levage nécessaire pour lever initialement l’extrémité à lever de la tirette en vue d’entamer la fracture de la ligne de rupture. Les saillies sont concentriques les unes par rapport aux autres, entourent partiellement le rivet et se trouvent en dessous de la tirette ou dans les ouvertures de la tirette afin d’éviter toute interférence avec l’équipement destiné à la fabrication d’une canette et avec la tirette. Les saillies augmentent la souplesse de la zone du panneau central adjacente au rivet ce qui permet à ce dernier de tirer légèrement vers le haut à partir du début du panneau, levant ainsi l’extrémité à lever de la tirette.
PCT/CA2006/001803 2005-11-15 2006-11-02 Fermeture terminale d’un recipient munie d’une tirette WO2007056844A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/274,519 2005-11-15
US11/274,519 US20070108208A1 (en) 2005-11-15 2005-11-15 Container end closure with pull tab

Publications (1)

Publication Number Publication Date
WO2007056844A1 true WO2007056844A1 (fr) 2007-05-24

Family

ID=38039702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2006/001803 WO2007056844A1 (fr) 2005-11-15 2006-11-02 Fermeture terminale d’un recipient munie d’une tirette

Country Status (2)

Country Link
US (1) US20070108208A1 (fr)
WO (1) WO2007056844A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9580204B2 (en) * 2004-09-14 2017-02-28 Gabe Cherian PT2 pull tab lids stacking
US8371471B2 (en) * 2009-02-27 2013-02-12 Alex I. Khowaylo Thermally broken beverage container and method of fabrication
US10017295B2 (en) 2010-08-06 2018-07-10 Ball Corporation Container end closure with optional secondary vent opening
WO2013028549A1 (fr) * 2011-08-19 2013-02-28 Ball Corporation Fermeture d'extrémité de récipient de boisson à caractéristiques d'ouverture faciles pour une patte de traction
DK2607255T3 (en) * 2011-12-20 2016-08-01 Ardagh Mp Group Netherlands Bv The plate and the container, which is provided with such a plate
EP2844573B1 (fr) * 2012-05-04 2017-08-23 Ball Corporation Élément de fermeture d'extrémité métallique comportant une section déchirable présentant une rigidité améliorée
US9033174B2 (en) 2013-03-15 2015-05-19 Ball Corporation Easy access opening tab for a container end closure
CN105102332B (zh) 2013-03-15 2016-12-28 鲍尔公司 具有拉环致动的副通气口的端盖
CN106458363B (zh) * 2014-01-08 2019-08-27 国际专利商标公司 用于物质的容器的盖子和包括所述盖子的物质的容器
WO2016018977A1 (fr) 2014-07-30 2016-02-04 Ball Corporation Fermeture d'extrémité de récipient mise à l'air libre
PL3464092T3 (pl) * 2016-05-24 2021-11-02 Ball Beverage Packaging Europe Limited Wieczko puszki aluminiowej na napoje
AU2017273675B2 (en) 2016-05-31 2020-09-10 Ball Europe Gmbh Lid for an aluminium beverage can
US10518929B2 (en) * 2018-03-16 2019-12-31 Steven S Schuver Resealable beverage can lid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880318A (en) * 1973-12-07 1975-04-29 Ermal C Fraze Reinforced easy opening end structure
US4084721A (en) * 1972-03-02 1978-04-18 The Continental Group, Inc. Container with attached closure
CA1045063A (fr) * 1975-02-10 1978-12-26 Continental Can Company Languette rivee sur couvercie facile a ouvrir
US6024239A (en) * 1997-07-03 2000-02-15 American National Can Company End closure with improved openability
US6234336B1 (en) * 1996-11-01 2001-05-22 Metal Container Corporation Stay-on-tab container closure having tear panel with no contour features on the upper surface

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6050440A (en) * 1996-01-05 2000-04-18 Aluminum Company Of America Easy open container end, method of manufacture, and tooling
US5875911A (en) * 1997-02-28 1999-03-02 Aluminum Company Of America Easy open container end with method of manufacture, and tooling
US6575325B2 (en) * 2001-03-12 2003-06-10 Robert G. Dickie Articulated pull tab opener for container
US6715629B2 (en) * 2001-12-19 2004-04-06 Rexam Beverage Can Company Can end for a container
US6889862B2 (en) * 2002-09-19 2005-05-10 Ball Corporation Large opening beverage container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084721A (en) * 1972-03-02 1978-04-18 The Continental Group, Inc. Container with attached closure
US3880318A (en) * 1973-12-07 1975-04-29 Ermal C Fraze Reinforced easy opening end structure
CA1045063A (fr) * 1975-02-10 1978-12-26 Continental Can Company Languette rivee sur couvercie facile a ouvrir
US6234336B1 (en) * 1996-11-01 2001-05-22 Metal Container Corporation Stay-on-tab container closure having tear panel with no contour features on the upper surface
US6024239A (en) * 1997-07-03 2000-02-15 American National Can Company End closure with improved openability

Also Published As

Publication number Publication date
US20070108208A1 (en) 2007-05-17

Similar Documents

Publication Publication Date Title
US20070108208A1 (en) Container end closure with pull tab
JP3166699U (ja) アクセス性を改善するためのタブ付き缶端部
US8464887B2 (en) PT1-2 pull tab
EP2219961B1 (fr) Extrémité de cannette de boisson refermable et ses procédés de réalisation
EP2675717B1 (fr) Extrémité de canette
US9511411B2 (en) Tab for a closure and process for making such tab
EP2576367B1 (fr) Fond de canette produit à partir d'un flan d'épaisseur réduite
EP2081709B1 (fr) Extremite de canette a ouverture facile avec ventilation haute pression
US20150239607A1 (en) Beverage can ends suitable for small diameters
US7922025B2 (en) Easy open can end with high pressure venting
US6951293B2 (en) End closure with anti-rotation tab
EP1456091A1 (fr) Element d'extremite de type canette pour contenant
WO2014149768A1 (fr) Fermeture d'extrémité ayant une évacuation secondaire actionnée par traction d'une bague
US10577148B2 (en) Tabs and related methods
AU761490B2 (en) End closure with improved non-detachable opening panel
US7721906B2 (en) Easy open can end with high pressure venting
US7784322B2 (en) Method of making an open can end with high pressure venting
WO2009130477A1 (fr) Dispositif d'ouverture
WO1997027117A1 (fr) Boite-boisson refermable

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06804678

Country of ref document: EP

Kind code of ref document: A1