Abstract: An opening and closing device for a package containing a pourable product. The device is affixed to the package at the top end of the package and includes a ring affixed to the surface of the package. The ring encompasses an intended pouring opening which is prescored. A combination of a rupture element and a lever arm are hingedly mounted within the ring in position for activation of the rupture element through the lever arm, to rotate the distal end of the rupture element against the prescored region and to partly tear away a tab of the package. Further rotation of the rupture element carries the tab into the interior of the package. Provision is made for retention of the rupture element and tab within the interior of the package out of the flow path of contents being poured from the package through the opening formed by removal of the tab.

Abstract: A resealable lid for beverage cans is provided. The can has a press-in tab for opening the pouring opening thereof via a press-in tip. A rotating lid is secured to the same pin or rivet as the press-in tab, and is rotatable over the pouring opening. When the rotating lid is over the pouring opening, and the press-in tab is pulled up, a support leg thereof catches against an arresting member on the surface of the can. In the catching position of the leg, the press-in tip of the press-in tab presses the rotating lid against the pouring opening.

Abstract: An easy-opening can end comprises: an end panel; a score which is formed on the upper surface or the lower surface of the end panel; the score having a cross section of a curved surface; and a tab having a finger grasping portion. The tab is attached to the can end panel and is rotatable around tab-fastening device. The tab-fastening device is positioned offset.

Abstract: There is provided a container closure that can easily be manufactured, has improved drop strength and is convenient for opening operation. The present invention provides a container closure which includes a substrate having adequate property for retaining an object which is enclosed in a container, a peripheral section formed on the periphery area of the container closure on the opposite side of a side where the substrate is attached to a container body, a panel section covering an area of the substrate surrounding by the peripheral section on the same side where the peripheral section is provided, and a score section formed between the peripheral portion and the panel section to provide a weakened region. The peripheral section and the panel section is a plastic layer formed with the same heat-fusible plastic as the substrate. A substantial area of the score section is constructed of the substrate.

Abstract: A can end for a two-piece beverage can including a generally flat radially extending portion; a score panel defined in the generally flat radially extending portion by an arcuate score, the score panel having a central, longitudinal axis projecting in a first axial direction and a second axial direction opposite the first direction; an annular emboss bead formed in the score panel and projecting in a first axial direction; and an annular deboss bead formed in the score panel and projecting in the second axial direction.

Abstract: A tab type openable beverage container in the form of a can fitted with a tear opening facility in the form of a tab is generally indicated by reference numeral 10. In addition to being used for gaining access to the contents of the can 10 via the shearing of an integrally formed panel 14, the tab 12 is swivellably mounted to a pin 20. It is thus swivellable along an arc 26 into closing off the contents of the can against undesired ingress of insects, bees and other undesired matter once the integral panel 14 has been broken away. The tab 12 displays an area of perforation 28. The contents of the can 10 thus remain accessible without having to swivel the tab 12 out of registration with the dispensing aperture 16. The tab 12 is formed with an openable flap 30 of which the inward urging provides a straw access opening.

Abstract: A cover or lid device for attachment to a depressed top portion of a beverage can, said top portion being of a type having as an integral unit a wall, a can top member with pouring aperture providing means, and a recessed portion bridging said wall and said top member, said cover or lid device comprising a plate member, a circumferential ring member integral with said plate member, and a resilient member member attached to an outside face of said ring member, said resilient member having in cross section an upper lip portion, a lower bead portion and a concave portion therebetween, said lip portion for engaging said wall and said bead portion for fitting into said recessed portion. Said resilient member may be made from a soft material, such as soft plastics. An edible or non-edible article may be accomodated between said plate member and said can top member.

Abstract: A resealable drink can is provided including an end plate for closing one end of the can. The end plate defines a first surface which in use faces an inside of the container and a second surface which in use faces an outside of the end plate. The end plate further has at least one aperture formed therein. A closure plate is mounted on the end plate on a pivot located adjacent to the aperture on a first side of the end plate. A handle is disposed on a second side of the end plate and is operatively connected to the closure plate such that movement of the handle moves the closure plate about the pivot.

Abstract: A mouth forming device for a container includes an opening section, an operating section and a supporting section which are disposed in substantially the same plane. A substantially U-shaped groove is provided between one end portion of the opening section and one end portion of the operating section. The supporting section surrounds a portion of the opening section and the operating section. The operating section is linked to and supported by the supporting section through axles. The opening section, the operating section and the supporting section are integrated through a thin wall portion and the support axles by molding. When the other end portion of the operating section is raised, the axles are twisted and the operating section rotates about the axles to close groove. Accordingly, the end portion of the opening section is pressed by the end portion of the operating section and the part of the container located beneath the opening section is opened by the opening section.

Abstract: A stay-on-tab container end having a panel wall with a tab attached by a rivet and having a tear panel. The tear panel being defined by a frangible score with a first end and a second end and a non-frangible hinge segment. A second groove is formed in the panel wall with a tail portion extending from the tear panel through the hinge segment. The second groove tail portion has a reduced residual differential compared to the frangible score residual. Also, the tail portion includes a curved terminal end that partially surrounds the second end of the score.

Abstract: The invention relates to a closure for a can of drink which is made in one piece and can be opened with one hand. Owing to the design of the closure, no supplementary parts are needed in the closure to open the closure.

Abstract: A side openable can is disclosed. The side openable can has a bottom sealed end, a sidewall and a top sealed end. An opening means for producing an opening at the upper portion of the sidewall, is provided on the upper portion of the sidewall. In another embodiment, the opening means may have a tear flap formed integrally in the upper portion of the sidewall of the can and defined by a tear line. A tear lever is fixed to the outside surface of the tear flap and used for tearing the tear flap away from the can. A spout holder has a holding rim and a support rib. The spout holder is attached interiorly to the sidewall of the can with a front surface of the holding rim interiorly bonded to the sidewall of the can around the tear flap, the holding rim having an insertion slit along its inside edge. The support rib has a depression. In addition, a drinking spout has an insertion flange and an elastic expansion part.

Abstract: A beverage can lid comprises an outer peripheral groove adjacent the outer rim and an inner concentric groove separated therefrom by a dividing rim which is at a predetermined height relative to the outer rim. A center platform is connected to the dividing rim by walls which slope downwardly from said rim. The central pull tab area is approximately the same height as the height of the inner groove and is connected to the inner dividing rim at one end with an upwardly curving surface. The outer groove which may be shallow and permits entry of a crimping tool to mount the lid on a can is also easily cleaned to provide a sanitary can lid. The inner groove may be blocked in the pouring spout area to facilitate cleaning.

Abstract: An identification system for a beverage container includes a beverage container; and a plurality of discrete areas associated with the container, each area being configurable from an original condition to a visibly different condition.

Abstract: A can lid having a top plate, a tab, a rivet, a score, a tongue, a first deboss, an emboss, a second deboss, and an embossed ridge. The first deboss is formed entirely within the score. The second deboss and emboss are formed entirely within the first deboss. The second deboss is formed by matching arcuate sidewalls, and has a sloped bottom surface. The rivet is offset from a center of the lid. The tongue is disposed between the rivet and top plate perimeter where the rivet is closest to the perimeter. The emboss is uniformly spaced from the score. An embossed ridge is uniformly spaced from the score outside of the score. In another embodiment, the second deboss is replaced with a contact emboss. A die insert for forming the first deboss, emboss, and second deboss (and, alternatively, contact emboss) is also disclosed.

Abstract: A stay-on-tab container closure suitable for use on beverage cans and the like, said closure including an center panel with an downwardly displaceable tear panel, which, in one aspect, has a smooth upper surface having no visually perceptible contour features, and which, in another aspect, has low-relief contour features on its upper surface. Closures according to the invention have reduced stresses across the score defining the tear panel, thereby reducing the likelihood of stress-induced fatigue cracking which can lead to score failure when the container closure is joined to a can body and the resulting can is internally pressurized.

Abstract: An openable can end for a beverage can of usual type, having a first tear-out portion which seems to be openable, when a lever-type tab is operated. A second tear-out portion is also provided beside or outside the first portion, wherein the second tear-out portion tears out (or breaks in) instead of the expected first tear-out portion. Thus, it is possible to surprise the user upon opening such a beverage can, without impairing the simple and reliable opening of the beverage can.

Abstract: A beverage container includes an easy cleaning upper panel which has a flat opening portion and a lifting portion, wherein the flat opening portion can prevent the dirt from accumulating in the ring shaped indented groove formed around the upper panel of the conventional beverage container. Besides, an enlarged gap is sufficiently provided between a lifting portion on the upper panel and the lifting ring, so that the consumer can easily grip on the lifting ring. Moreover, a protective film is detachably attached on the upper panel so that the consumer may simply remove the protective film to obtain a clean panel surface for consuming the beverage.

Abstract: A can lid having a top plate, a tab, a rivet, a score, a tongue, a first deboss, an emboss, a second deboss, and an embossed ridge. The first deboss is formed entirely within the score. The second deboss and emboss are formed entirely within the first deboss. The second deboss is formed by matching arcuate sidewalls, and has a sloped bottom surface. The rivet is offset from a center of the lid. The tongue is disposed between the rivet and top plate perimeter where the rivet is closest to the perimeter. The emboss is uniformly spaced from the score. An embossed ridge is uniformly spaced from the score outside of the score. In another embodiment, the second deboss is replaced with a contact emboss. A die insert for forming the first deboss, emboss, and second deboss (and, alternatively, contact emboss) is also disclosed.

Abstract: The present invention provides an end closure for a container having a central panel wall with a displaceable opening panel defined by a frangible score and a non-frangible hinge segment. A tab is attached to the panel wall by a rivet, the tab having a nose extending over a first area of the opening panel, the remainder of the opening panel which is exposed from the tab defining the second area of the opening panel. A deboss bead resides in the opening panel, formed in the second area. The deboss bead being curvilinear in shape, formed as a narrow channel in the opening panel. The narrow channel preferably being formed as a U-shaped bead with a first wall and a generally opposed second wall, with the first and second wall being joined by an arcuate intermediate segment. The end closure further has a deboss panel residing in a plane below the remainder of the panel, the deboss bead extending below the plane of the deboss panel.

Abstract: A beverage can lid which has a sealing tab on its surface so that the can can be resealed after it has been opened. The can contains a rotatable lid element in addition to a fixed lid element either above or below the fixed element to perform the sealing feature.

Abstract: A container end closure for facilitating the opening of a pressurized container. The container end closure includes a non-detachable tab having a bulbous end proximate a frangible section of the end closure and a recess in the end closure proximate an opposite end of the tab.

Abstract: A fitment for use as a pour spout for a paper carton or flexible bag for liquids and powders has a flange which may be welded around a hole in the carton or bag. A spout projecting outward from the flange is provided with a removable membrane integral with the interior of the spout. Preferably the membrane is concave. A horizontally disposed pull ring may be attached to the membrane by a connector so that pulling the ring removes the membrane by fracturing the tear line at the juncture of the outer edge of the membrane and the projection. A cap snaps over the spout and may be removed by unscrewing the complementary threads on cap and spout. Optionally, a tamper-evidencing band frangibly connected to the lower edge of the cap skirt engages the exterior of the spout so that the cap cannot be removed without breaking the frangible connection. Various means and methods for detachably securing the fitment to a spud or holder during delivery of the fitment from a chute to the interior of a carton are disclosed.

Abstract: A stay-on-tab container end having a panel wall with a tab attached by a rivet and having a tear panel. The tear panel being defined by a frangible score with a first end and a second end and a non-frangible hinge segment. A second groove is formed in the panel wall with a tail portion extending from the tear panel through the hinge segment. The second groove tail portion has a reduced residual differential compared to the frangible score residual. Also the tail portion includes a curved terminal end that partially surrounds the second end of the score.

Abstract: A beverage container with flow enhancing sidewall structure. The container is preferably provided in thin-walled aluminum for containment of carbonated or other beverages such as beer or carbonated soda. The container has a liquid outlet, and adjacent the liquid outlet, but in the substantially cylindrical sidewalls, a generally nose-shaped inwardly indented liquid flow enhancing structure is provided. The flow enhancing structure is provided with a generally reducing cross-sectional area when progressively examined in transverse cross-sectional area toward the liquid outlet end of the cylindrical sidewall. The generally nose-shaped structure may be offset from the centerline of the liquid outlet to further enhance liquid outflow. Although in a preferred embodiment the nose-shaped structure is substantially pyramidal in shape, the structure may alternately be provided as a section of an oblique circular cone, or other flow enhancing shape.

Abstract: A container opening device, container lid, or can top with a decorated feature, or in the case of an opening device, a symbolically shaped pull tab for attachment to a container to perform the dual functions of opening the container and decorating the container for equity, identification or promotional purposes. The pull tab may open the container by acting as a lever which presses against a tear strip in the container top defined by a tear line to separate the tear strip from the container top and open the container. The pull tab may perform a decorative and promotional function by having a decoration or a symbolic shape that is to be recognized as a picture, trademark, icon, character, or other symbolic item or logo. The decoration can be made by applying color, printing, embossing, laser removal of a coating and labels to the pull tab, lid or container. The pull tab or decoration can take the shape and design of corporate logos, trademarks, icons, etc.

Abstract: A resealable flip-top beverage can lid has a lid having a rim disposed on the periphery thereof; a swinging seal positioned to seal an opening in the lid; and a tab rotatably attached to the lid with a rivet. The tab has a hole punching lip and an extended lifting section on opposite sides of the rivet. The extended lifting section extending at least to the rim and is shaped to cover and substantially seal the opening in the lid. While it is preferred that the seal be strong enough to maintain any carbonation within the beverage can, a weaker seal is also beneficial in excluding insects and preventing or limiting spills. The extended lifting section preferably further includes a rim locking section to locks onto the rim of the lid.

Abstract: A packaging for bulk goods which comprises an inwardly laminated folded box body (1) and a lid (3), also of a laminated cardboard material, which is sealed or glued into position. In order to ensure the tightness of the packaging also in the corner regions, the coating also extends into said corner regions (7) of the lid (3). A pull-up window (4) is provided in the lid (3), while the package is filled from the lower side (2).

Abstract: A container end is provided so that upon opening, a generally triangular vent region is formed with an apex pointing rearwardly toward the head space to vent the container, e.g. during pouring. A container is provided that achieves a fast and smooth pour with a relatively small increase (relative to certain previous configurations) in the opening area and achieves a superior pour without increased bursting, buckling or opening failures associated with relatively larger openings.

Abstract: A container, particularly for drinks, comprising an end (5) in which a closed line of weakening (6) is formed defining the outline of a lid (7) and of a corresponding hole (8), and a lever (10) associated with the lid (7) and operable manually in order to tear the wall (5) along the line of weakening (6) and remove the lid (7) from the container wall is characterized in that it comprises a flexible tongue (9) which normally bears on the outer face of the end wall (5) and has one end (9a) fixed to the lever (10) and to the lid (7) and the other end (9b) fixed to the outer face of the end wall of the container, spaced from the lid, the tongue (9) being able, as a result of the manual removal of the lid from the container wall, to adopt 2 a bent configuration in which the associated lid is in a position of disengagement from the hole (8), restraining means (15; 19, 20) being provided for keeping the tongue in the bent configuration.

Abstract: A reclosable ring-pull opener (20) for a can (22) has a grippable ring (28). A closure (32) underlies the ring and extends above the top wall in parallel overlying relation to the top wall. The closure has a peipheral flange (34) and a downwardly depending skirt (37). A connecting nose (54) extends in folded, connecting relation from a peripheral edge (56) of the ring to an underlying peripheral edge (58) of the closure. A rivet (44) passes through the closure to movably mount the main body (27) on the top wall (26) of the can for upwardly directed, hinging movement of the ring toward the vertical, and for downward movement of the nose into opening urging contact with a scored, region (38), thereby to open the can. The rivet also mounts the main body atop the can for rotatable movement in the plane of the top wall to a position whereat the skirt overlies the opening, and for downwardly directed, movement of the closure, thereby releasably sealing the can.

Abstract: The invention concerns flexible, composite, multilayer sheets which act as means to open and close appropriately shaped containers (f.i. trays) of products consumable also in more successive doses and which are characterized by an opening edge, a device to stop said opening, a tamper evident device and a protection layer. Said multilayer sheets include at least:a first superior outer layer consisting of at least a film acting as support of the printing and of a press-sensitive adhesive;a second inferior inner layer consisting of at least a thermosealant film and characterized by die-cut zones having the function to detemine the access mouth shape and to create an invitation to the eased opening; andan intermediate layer consisting of a press-sensitive adhesive.

Abstract: A technique for avoiding the risk of spreading communicable diseases in drinking inadvertently from another's open beverage can by applying distinctive user identification markers on the can top cover, positioned arcuately about the cover and identified by using the lever-opener also as an identification indicator through rotational alignment with and locking at a desired user's marker.

Abstract: An easy open can end has an improved structure for facilitating the opening operation of the tear panel, a method of further forming a can end to have the improved structure, and tooling for accomplishing the method. The further formation of the can end is particularly useful in easy-open can ends having enlarged tear panels.

Abstract: The invention concerns a cap (8) for closing a container such as a drink can opened (6) by a breakable seal (5) by means of a pull strip (7) on the lid, the said cap (8) being removably mounted on or around the said pull strip (7) to constitute a movable tab pivoting about the rivet (9) on the lid (4) to be clipped on the peripheral lip (12) crimping the lid (4) on the body (1) of the container. It is characterised in that the clipping means comprise two resilient linking tabs (13, 14) symmetrically arranged in the median horizontal plane P of the cap (8) on either side of the longitudinal axis of symmetry S to form a space (15) in which a lug (16) extends from a horizontal strip (17) holding together the two release tabs (13, 14). The invention also concerns the use of the cap (8) as an advertising vector or an element of a game.

Abstract: An improvement to an easy opening beverage container lever operated opener comprising an operating lever with a controllably flexible lift end. A lift end of the operating lever is raised to allow an operator to engage a finger on the lift end of the operating lever and to proceed with the container opening process. In one embodiment of the invention, the operating lever is rotatable along an incline plane to raise the lift end of the operating lever to allow an operator to engage a finger on the lift end of the operating lever and to proceed with the container opening process.

Abstract: The present invention provides a stay-on-tab end closure having a displaceable tear panel defined by a frangible score with a sloping segment and a non-frangible hinge segment. A curvilinear bead is formed entirely in an exposed area of the central panel formed by a void region of the tab webbing. The nose of the tab has a generally asymmetric shaped outer edge with a second portion extending further over the tear panel toward the curvilinear transition zone of the score. The invention further provides a tab with an asymmetrical thickness, with a thickened portion adjacent the second scoreline segment, and further provides a bead segment positioned under a side portion of the tab nose adjacent the second segment of the score. The present invention also provides an end with a hinge region of the tab adapted to bend at a hinge line, the hinge line intersecting the central longitudinal axis of the tab at an oblique angle.

Abstract: A dual aperture beverage container is disclosed, consisting of a beverage container of traditional cylindrical shape, with a traditional pouring aperture assembly on the top of the container, such as a scored section and a tab. Located along the container side wall is a second scored portion. A venting aperture opener is included which hooks onto the top container rim and opens the venting scored portion to reveal a venting aperture. The venting aperture container can be used to provide additional air to the pouring aperture, or can itself be used as a pouring aperture. Also disclosed is a venting scored portion and venting tab, located on the container bottom, serving the same purpose as the venting aperture located on the container side wall.

Abstract: A pull top type can with a seal is provided, which is sanitary, can prevent injury of the user, can prevent spattering of the contents and can be re-used. The seal (5, 5A) is attached to the pull top type can (1, 1A) such as to cover the tap.

Abstract: An opening arrangement for packaging containers designed so as to prevent splashing or spraying of liquid contents on reclosure of the opening arrangement. The opening arrangement (1) has a closure device (4) with a front end depressable into the pouring opening (5) of the opening arrangement, and a rear compression portion (10) of greater cross sectional area than the pouring opening (5). The compression portion (10) includes arrest heels (14) facing towards the pouring opening (5), the arrest heels, on reclosure of the opening arrangement, coming into contact with the wall surface (3) located around the pouring opening (5) and preventing any possible residual contents (9) thereon from causing splashing in connection with the reclosure operation.

Abstract: A new beverage can opening tab for preventing insects from entering the interior of a beverage can through the beverage can opening. The inventive device includes a tab body with a seal opening portion, a mounting portion, a lifting portion, and at least one wing portion positioned adjacent the lifting portion. The mounting portion is mountable to the top lid of a beverage can such that the tab body is rotatable between an opening position and a covering position over the top lid. When the tab body is in the opening position, the seal opening portion is positioned adjacent the opening of the can so that the seal opening portion may be pivoted to open the frangible sealing member covering the opening on the top lid into the interior of the can. When the tab body is rotated to the covering position, the wing portion and the lifting portion are positioned over the opening to cover the opening in order to prevent insects from passing through the opening into the interior of can.

Abstract: The product and method of manufacturing a tab having a rivet island window and adapted to be secured to a container end, including the steps of forming a first dimple at a first end position of the window and a second dimple at a second end position of the window, formed as depressed regions of metal residing outside the central plane of the metal. The method includes punching a first blank in the first dimple and a second blank in the second dimple, and subsequently bending the edge regions around the first and second blank to form a bend of the metal away from the central plane. The central region of the window is formed between and joining the blanks, and a rivet opening is formed, adapted to receive a rivet for staking the tab to a container end.

Abstract: A can end for a two-piece beverage can including a score panel defined by an arcuate score line which comprises a score groove and a score residual portion. In order to control the opening speed of the score panel, the thickness of the score residual is varied along the score line. A thickened score residual area or areas may generally be located opposite the rivet area of the can end. The remainder of the score residual may be formed having a relatively smaller thickness, thus allowing opening of the end to be accomplished without the need for excessive force.

Abstract: An end closure for a container has a central panel, a circumferential countersink (18) formed around the center panel and adjacent the periphery of the end closure, and a fold (22) formed at the junction between the countersink and the center panel, the fold having opposite side walls which lie closely adjacent or in contact with each other and project upwards from the end closure. The fold may instead be formed at the base of the countersink. The fold forms an annular rigid zone in the end closure.

Abstract: A drink-thru lid for a drinking cup including an annular mounting portion for sealingly engaging the drinking cup, wherein the annular mounting portion includes a downwardly extending annular skirt. The lid further includes a tear-back section extending from the annular skirt to a hinge portion located in a medial portion of the lid. The tear-back section includes a raised protrusion extending outwardly from an upper surface of the lid. A recess is further formed in a medial portion of the lid on the opposite side of the hinge portion from the raised protrusion, wherein the tear-back section may be torn away from the lid on its sides and pivoted about the hinge portion until the raised protrusion is received within the recess for holding said pivotal flap open. The raised protrusion and the recess are shaped such that the raised protrusion is frictionally engaged by the end walls of the recess.

Abstract: A package opening and closing device for a brick-type package is fastened thereon near an opening region defining a pouring region for the product contained in the package. The opening region is provided with prescoring to allow the package to be opened during the first use. The device includes a peripheral ring fastened to the package near the perimeter of the opening region, a lid to seal off the opening region reversibly and being fixed to the peripheral ring, and a lever hinged by a hinge pin in the horizontal plane containing the device to rupture the pouring region along the prescoring.

Abstract: A lift-up tab opener for a beverage can is improved by providing an actuator with a finger loop and pressure tab to push open a closure tab as in the prior art. The actuator is modified to elevate the pressure tab with a bend forming a fulcrum, so that the pressure tab can be pushed to elevate the finger loop for ease of grasping it to operate the actuator.

Abstract: A liquid transfer system which minimizes user exposure to hazardous materials, effectively addresses new governmental regulations and provides a positive methods for deterring system tampering. The liquid transfer system includes a novel valve mechanism which can be connected to a container such as a metal or plastic drum, and a coupler mechanism which can be removably coupled with the valve mechanism for operating the valve mechanism. An important aspect of the liquid transfer system is a tamper evident closure cap for closing the top to the dispensing valve mechanism of the system. The tamper evident cap is of a unique character such that it must be broken before access to the container can be achieved. The top opening of the valve mechanism is uniquely configured so that it will accept only couplers of a particular compatible design.

Abstract: A flat end beverage can lid comprises a soda can lid wherein the inner platform is connected with the rim groove. The intent is to facilitate cleaning of the groove and nearby opening hole. The pull tab is located on the inner platform so that it can be readily cleaned by finger. The inner platform extends to the can edge and can be lower than or equal to the rim groove. With this design, it is also possible to use the existing crimping head on the filling line which represents a large cost savings for the filler.

Abstract: A can end having an improved pour-type ecology opening mechanism includes a conventional can end wall that contains a score line that defines a displaceable panel. The score line includes an initial design rupture point, a radiused portion having a first tangent point and a second tangent point, and a main portion that terminates at a final transition point. The can end further includes a tab having a liftable heel portion and a tab nose portion, with the tab nose portion being positioned to apply downward pressure to the panel at a pressure point on the displaceable panel when the heel portion is lifted. The tab has a center line that is coincident with a radius of said can end wall. Advantageously, the pressure point is positioned a distance, taken in the direction of the center line, from the second tangent point of the radiused portion that is selected to prevent a buildup of force that would otherwise hasten propagation of separation along the main portion of the score.