MXPA00000062A - End closure with improved openability - Google Patents

Abstract

The present invention provides an end closure for a container having a central panel wall with a displaceable tear panel defined by a frangible score with a sloping segment 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 portion of the tear panel, a lift end opposite the nose, and a central webbing with a hinge region and a rivet island surrounding the rivet. A bead is formed entirely in an exposed area of the central panel formed by a void region of the webbing. The invention further provides a score with a first scoreline segment with a vent region and a second curvilinear scoreline segment extending from the first segment toward the panel outer edge portion. The nose of the tab has a generally asymmetric shaped outer edge with a first portion and a second portion, the second portion extending further over the tear panel toward the curvilinear transition zone than the first portion of the nose. The invention further provides a tab with an asymmetrical thickness, with a thickened portion being adjacent the second scoreline segment, and further provides an end having 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 tab having a central longitudinal axis and a webbing with a hinge region adapted to bend at a hinge line when a lifting force is applied to the lift end of the tab to provide a leverage force by the nose against the tear panel, the hinge line intersecting the central longitudinal axis of the tab at an oblique angle. The invention also provides a stepped profile of the panel outer edge with a countersink having substantially parallel walls and a chuck wall angularly extending from below the panel height to the curl.

Description

PATENT 400P919 CLIP WITH IMPROVEMENT FOR EASE OF OPENING DESCRIPTION TECHNICAL FIELD OF THE INVENTION The present invention relates to clips for soft drinks and beers in two-piece metal containers, which have a frangible panel and a retained tab secured by a rivet. More specifically, the present invention relates to improved features for opening the frangible end panel.

BACKGROUND OF THE INVENTION Commonly the caps or closures of beer and other beverage containers have an opening panel and a leverage tab to push the opening panel into the container to open the weir. The container commonly a can, which is commonly constructed of a thin plate of aluminum. The clips for said containers are also made of a cut of a thin plate of aluminum or steel, which is formed at an empty end, and is fabricated into the finished end by a process which is often referred to as a final conversion. These ends are formed in the process of first forming a thin metal cut, which in turn shapes an empty end and converts this space into a clip that may be bordered to a container. This type of container clips have been used for many years. With almost all of these in use being the "ecological" or "permanent" clips wherein said clips remain attached to the end of the opening panel once the panel is opened. Through the use of these clips, manufacturers have sought to save the expense of the metal by calibrating the thickness of the same in the ropes and clips, however, because the ropes used for containers with a pressure content, the Notch of the opening panel must have sufficient notch residue to withstand said pressure, which in turn, requires that the tongue have a thickness on the part of the metal that provides the force to open the panel. In addition, the increasingly popular use of larger landfills creates new problems in terms of ease of opening the end. Due to the larger size of the opening panel (or frangible panel), a greater force is placed on the clip during the opening of the frangible panel, restricting the efforts to decrease the thickness of the clip. In addition, the notch in certain regions of the larger aperture panels and larger, are more difficult to open by the clip that leverages the frangible panel. This is especially true for the region of the notch where in the 5:00 to 6:00 clock positions (with the rivet and nose of the clip at the 12:00 position). Another problem with said clip is the loose metal in the rivet area of the central panel that results in the conversion process of the rope. The laxity of the metal makes opening the frangible panel by means of the clip difficult due to the loss of the necessary leverage of the clip. When the frangible panel is initially divided, a small amount of loose metal is in the area around the rivet and that is useful for initiating the process of separating the notch line. However, the existence of a greater amount of laxity causes the panel to rise when the clip is forced against the frangible panel, causing the efficiency and the leverage of the clip to be diminished. Another problem with said container or container cape is the corrosion of the metal of the notch, the area called notch residue. This corrosion, which is often referred to as fatigue corrosion, is caused primarily by an accumulation of moisture in the notch, sensitivity to the metal, and fatigue by tensile forces in the metal of the notch area. Moisture accumulation is mainly caused by water remaining on the line after the washing operation performed by the filler or filler (such as the filling operation of beer and soft drinks). Also the increase in humidity as a result of the high temperatures is especially, a problem when the pallet or tray of the containers already filled, is wrapped in shrinkable plastic, trapping consequently the moisture in the ends. The stress fatigue state of the metal is increased by the high temperatures creating an increase in the internal pressure of the container or container, causing stress fatigue forces in the metal and in the notch area. Another problem with said container or container cape is the restriction to material savings when looking for the manufacture of thinner metal clips, mainly due to the fact that the traditional geometry of said clips requires that one manufactures a clip to Starting from a larger cutting margin when it comes to making a thinner metal end. As explained in greater detail below, the present invention reduces or eliminates these problems for ecological type clips and problems for larger notches.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clip and weir for a container or container having a central panel wall with a face for the product and a face for the public. The clip has a separable or frangible panel in the central wall panel portion which is at least substantially defined by a frangible notch and a non-frangible hinge, a tab attached to the public side of the central panel of the wall by a rivet, and at least one portion of tongue protrusion extending over the portion of the frangible panel. The tongue has one end to rise opposite the shoulder and a central fabric between the shoulder and the end that is raised with a hinge region and a rivet island surrounding the rivet. The riveting island is at least partially surrounded by a vacuum region to provide an exposed area of the center panel and a ridge is formed entirely in the exposed area of the center panel. It is also an object of the present invention to provide a notched end with a segment of the first notch line with a breathing or vent region located at least partially below the shoulder and extending to the immediate region adjacent to the tongue shoulder. . A second curvilinear segment of the notch line extends from the first segment towards the outer edge panel to a third notch line segment having a curvilinear transition zone and extending to a fourth notch line segment of the groove. remaining of the notch line. The shoulder of the tongue has an asymmetric shape at its outer edge with a first portion and a second portion. A second portion extends over the frangible panel towards the curvilinear transition zone of the first portion of the shoulder. It is also an object of the present invention to provide a clip with a tongue shoulder having an asymmetric thickness, with a first portion and a second portion thickened. The second thickened portion is adjacent to the second notch line segment. It is also an object of the present object to provide a clip with flange segment located below a side portion of the tongue shoulder adjacent the second segment of the groove. The flange segment has an upper contact surface with the shoulder of the tongue and is adapted to direct the opening force towards the transition zone of the notch or weir, when the opening force is applied when lifting the tongue clip or tongue. end so that the shoulder is applied to the frangible panel.

It is also an object of the present invention to provide a clip with a tongue with a longitudinal center axis and a fabric with a hinge region adapted to be bent in the hinge line when an upward force is applied to lift the tongue end to provide a force of leverage by the shoulder at an oblique angle.

Another purpose of the present invention is to provide a compressive fatigue component in the panel metal that is immediately adjacent to the notch or weir. The invention provides a declining segment of the area surrounding the notch or weir, with a first bend leading to the first sloping edge of the frangible panel adjacent the notch or weir. The inclined segment also has a second inclined edge in the wall of the panel, outside the frangible panel, immediately adjacent to the weir, which leads out of the weir of the second fold. It is another object of the present invention to provide a geometry of the peripheral outer area having a stepped profile of the outer edge panel and a narrow countersink with substantially parallel walls, and a clamping wall extending angularly below the height of the panel to an external corkscrew.

Other advantages and aspects of the invention will be apparent when referring to the claims, specifications and illustrations that accompany the present.

BRIEF DESCRIPTION OF THE ILLUSTRATIONS Fig. 1 is a plane of the upper side and the clip of an inclusion of the present invention; Fig. 2 is a plane of the lower side of the rope of figure 1; Fig. 3 is a plane of the upper side and an alternative clip of the present invention; Fig. 4 is a cross-sectional view along lines 4-4 of Fig. 1; Fig. 5 is a cross-sectional view through 5-5 of Fig. 3. Fig. 6 is an alternative inclusion of cross-view along 5-5 of the Fig. 3; Fig. 7 is a schematic plane of the line shown in Fig. 1. Fig. 8 is a schematic plane of the line shown in Fig. 1; Fig. 9 is a cross-sectional view of the tools and method for forming the void area of the rim shown in Fig. 1; Fig. 10 is a cross-sectional view of the structure and tools to form the inclined segment of the notch or weir area; Fig. 11 is a partial cross-sectional view of the peripheral outer area of the cape of the container or container showing an external panel radius and a narrow area of countersink.

DETAILED DESCRIPTION OF THE ILLUSTRATIONS Although this invention is susceptible to inclusions in many different ways, the preferred inclusions of the invention are shown in the illustrations and are described in detail herein, with the understanding that the present disclosure should be considered as an example of the principles of the invention. invention and does not intend to limit the broad aspect of the invention to the inclusions of the illustrations. The figures show the article of the present invention, made according to the manufacturing method of the invention. The container clip of the present invention has improved features for opening it, having a structure adapted to provide a center panel region of rigid center, around the rivet area, which serves as a leverage point to open it, and a structure adapted to provide better leverage and a smooth opening of the landfill. In the preferred inclusion of Figures 1-8, the clip 10 for a package (not shown), has a central panel wall 12, with a fringed rim 14, for attaching the wall to the container. The container is commonly a metal can, constructed from a thin plate of aluminum or steel. The clips of said containers are also commonly manufactured from a cut edge margin of a thin plate of aluminum or steel, formed on a blank end, and manufactured within the finished end by a process which is often referred to as end conversion. . In the inclusion shown in the figures, the central panel is joined to the container by a fringed curl 14 which is attached to a container coupling curl. The curl border 14 of the clip 10 is integral part of the central panel 12 by a countertop area 16 which is attached to the outer edge of the panel 18, of the central panel 12. This type of means for attaching the central panel 12 to the container is today in day, the most common way of joining in the industry, and the structure described above is formed in the process of forming the blank end of a cut edge margin of the metal plate, prior to the final rope conversion process. However, other means for attaching the central panel to the container may be employed in the present invention.

The steps for making the clip begin with marking the cut edge margin, typically a round or non-round edge of thin metal plate. Examples of shore margin markings include elliptical, and spiral. A spiral plate edge can be described as a figure with three different diameters, each of them at 45 ° relative to one another. The cutting edge or margin is formed within a marked line, by forming a curl border, countersink, panel radius and center panel.

The conversion process for this type of clip includes the following steps: Form a rivet, first creating a projection bubble in the center of the panel and subsequently locking the metal of the bubble to form a button and within the projection more narrow metal, being the rivet; forming a frangible panel by making an incision in the metal of the wall panel; forming an internal flange on the frangible panel; forming a panel without engraving by folding the metal of the panel wall in such a way that the central area of the panel wall is slightly lower than the rest of the panel wall; securing the tongue to the rivet; and other subsequent operations such as cleaning steps to remove sharp edges from the clip, signs on the wall of the panel by engraving or securing, and re-securing the rivet island. This conversion process is described below with the description of the structure of the clip.

The wall of the central panel 12 has a displaceable frangible panel 20, defined by a frangible area 22 and a non-frangible hinge segment 24. The frangible panel 20 of the central wall panel 12 can be opened, i.e. the frangible area 22 can be cut and the frangible panel 20 is displaced at an angle relative to the remaining portion of the central panel 12, while the frangible panel 20 remains bent and hingedly connected to the central panel 12 through the hinge segment 24. In this operation opening, the frangible panel 20 moves at an angle. More specifically, the frangible panel 20 is deflected at an angle relative to the plane of the panel 12, with the vortex of the angular displacement being the hinge segment 24.

The frangible panel 20 is formed during the conversion process by an incision operation. The tools for this operation in the frangible panel 20 in the central panel 12, include a top punch of the public side 12a with a knife of the same shape of the frangible panel 20, and a lower punch on the side of the product 12b to support the metal in the regions where the incision process is taking place. When the upper and lower punch are joined, the metal of the panel of the wall 12 is cut between the dies. This results in the knife being keyed into the metal of the wall panel 12, the incision appearing as a recessive wedge-shaped part in the metal. The metal remaining under the recessive wedge-shaped part is called residue 23 of incision 22. Consequently, the incision is formed by the knife edge causing movement of the metal, in such a way that the print of the knife is made on the public side 12a, causing loose and excess metal relaxation, a condition well known in art, which is undesirable. A flange may also be formed on the internal frangible panel 21 on the frangible panel 20. The inner flange may be used to remove excess metal, or laxity, in the frangible panel 20 to harden the frangible panel 20. The internal flange, it also adds to the component with beam characteristics in the frangible panel 20 to further harden, in that region of the frangible panel 20. The internal flange 21 is formed in a standard manner when a flanger is used in the clip manufacturing industry. That is, a metal bend made between even dies. Preferably, the formation of the flange of the frangible panel 21 does not include the thinning of the metal, because the metal bends to that flange shape instead of the metal being squeezed or worked. The flange of the frangible panel 21 is preferably formed in a shape or shape that generally follows the geometric figure of the incision 22 of the frangible panel 20, and thus the lax metal of the frangible panel 20 is drawn in the same way. A supplemental flange or additional 21a is preferably formed adjacent to the transition zone 22d of the frangible panel 20, which is a curvilinear segment of the incision 22 remote from the tongue shoulder and close to the outer edge 18 of the panel wall 12. The supplemental flange 21a provides a structural component of support beam adjacent to the transition zone 22d of the incision of the frangible panel 22 that, during the period of opening force ("pushing force") required to separate the notch in the transition zone 22d . The opening of the frangible panel 20 is operated by the tongue 26 which is connected to the central panel 12 by a rivet 28. The tongue 26 is connected to the central panel 12 in such a way that the shoulder 30 of the tongue 26 extends over the portion next to the frangible panel 20. The end 32 of the tongue 26 is located opposite to the shoulder of the tongue 30 and provides access for the user to lift the end 32, such that the shoulder 30 is forced with the finger of the user. against the proximal part of the frangible panel 20. The notch 22 has a first segment 22a that is at least partially positioned below the tongue shoulder 30 with a vent region 34 that is the portion that the notch 22 initially causes the fracture during the opening process. The notch 22 also has a curvilinear segment 22b extending from the first segment 22a towards the outer peripheral edge 18 of the panel and leading to a third curvilinear segment 22c with a transition zone., usually indicated as 22d. A fourth segment 22e continues from the third segment 22c through the remainder of the groove 22, and terminates adjacent the hinge segment 24. During the opening of the frangible panel 20, accordingly, the groove 22 initially breaks (ex. The residue of the notch 23 is cut) in the landfill region 34 of the first segment of the groove 22a, and the break of the groove 22 propagates in sequence through the second segment 22b, the third segment 22c, and finally, through the fourth segment 22e. The transition zone 22d of the groove 22 is a region of the frangible panel of the groove 22 which exhibits a great resistance relative to the opening force, which is at least partly due to the curvilinear geometry of the segment 22c, and due to the fact that the shoulder of the tongue comes in contact with the frangible panel at a certain distance from the transition zone. When the shoulder of the tongue 30 is forced against the frangible panel 20, the groove 22 initially becomes fragmented in the landfill region 34 of the groove 22 of the frangible panel 20. This initial break of the groove 22 is primarily caused by the force of lifting on the tongue which results in the lifting of the central region of the central panel, immediately adjacent the rivet 28, which causes the separation of the residual metal from the groove 22. The force required to fracture the groove in the landfill region 34 is known commonly as the "pop" force, which is a degree lower than the force relative to the force required to propagate other regions of the groove 22 by continuously lifting the clip 32 of the tongue 26. Consequently, it is preferable for the panel 12 in the area around the rivet 28 that only lift enough to assist with the initial break of the notch, or "pop" and remain substantially rigid and flat to provide the necessary leverage for the tab 26 to propagate the notch line of the frangible panel 20. The present invention provides said optimum hardness or stiffness in the center panel, and is explained below. After the initial pop, or fracture of the frangible panel, the user continues the lifting process with the end 32 of the tongue 26, which causes the lip of the tongue 30 to be pushed down into the frangible panel 20, to continue breaking the notch 22, as an opening force. Upon continuing the opening operation, the frangible panel 20 moves downward and is rotated around the hinge region 44 to be diverted into the container or package. During this continuous fracture propagation process, the transition zone 22d exhibits a high degree of resistance, requiring a large amount of leverage and opening force. In the case where the clip has a frangible panel 20 substantially wider than the tongue, such as the weir shown in Figure 1, notch fracture is especially difficult, especially in the transition zone, approximately 5:00 or 6:00 of the clock position (with the notch adjacent to rivet 28 and being in a position of 12:00). The force required to fracture the remainder of the third segment 22c and the fourth segment 22e is relatively much less, and may result in the frangible panel 20 being forced into the container, which could potentially touch the beverage within the container (as for example a beer or n soda), which, in turn, can result in the product shooting out of the landfill, an undesirable condition referred to as product splash. Also, as the industry constantly seeks to decrease the thickness of the metal of the clip and the tongue (eg, use thinner metal to save material costs), the increase in opening efficiency by the tongue or clip allows the use of the tongue made of thinner metal or less metal. To provide a better opening of the frangible panel 20 from the initial bursting force of the landfill region, and to provide a smooth opening throughout the notch line, the present invention provides stiffness with minimal lifting of the central panel 12 in the rivet region 28, which serves as a fulcrum for lifting the tongue 26. Also, the present invention provides better leverage by the tongue during opening of the frangible panel 20, adapted to direct the tongue shoulder for leveraging the opening force against the optimal regions of the frangible panel 20 to fracture the notch line.

As best shown in Figures 1 and 3 of the tongue 26, it has a central fabric 42 located between the shoulder 30 and the end 32. The central fabric 42 includes a hinge region 44 and a rivet island 46. surrounding the rivet 28. The void region 48 of the tongue tissue 42, provides an exposed area 50 of the central panel 12. The empty region 48 has a curvilinear geometry that borders the rivet island 46 and at least partially surrounds the rivet 28 with a first end 48a of the vacuum region 48 which is generally located on one side of the rivet 28, and a second end 48b which is generally located on an opposite side of the rivet 28. The hinge region 44 of the tissue tab 42 includes a hinge line 44a which is defined by a substantially straight line passing between the first end 48a and the second end 48b of the vacuum region 48. The tab 26 generally has an elongated body with an axis longitudinal traverse AA defined by a central cross section through the shoulder of the tongue 30, and through the central fabric 42 and the lifting end 32. The clips of the prior art often had the tongue 26 that is stacked on the legs. final steps of the conversion process by stacking the panel area of the adjacent wall 12 and below the rivet island 46 at an angle, to deflect the tab 26, such that the end of the clip 26 rests near the wall of the panel 12. Also, commonly in the prior art, the ends of the containers have a hinge line that is perpendicular to the longitudinal central axis A-A of the tongue 26. In this way, during the process of opening this previous clip, the shoulder of the tongue comes into contact with the frangible panel 20 in the area identified as 36 in fig. 7. According to one aspect of the present invention, as shown in Figures 3 and 7, the hinge region 44 of the tongue is adapted to have a hinge line 44a that is not perpendicular to the longitudinal central axis of the tongue 26. On the other hand, the hinge line 44a intercepts the longitudinal central axis A-A at an oblique angle. As shown in Fig. 3, an inclusion of the present invention has a vacuum region 48 with a first end 48a that is closer to the outer edge 31 of the shoulder of the tongue 30 and closer to the frangible panel 20. Which of the second end 48b. Thus, the hinge or cutting line 44a of the tongue 26 is oriented at an oblique angle relative to the longitudinal central axis A-A, and is not parallel or perpendicular to the A-A axis.

The alteration of the cutting line or hinge 44a as regards its orientation relative to the central axis of the tongue 26, which is described above, results in a structure directing the path of the tongue 26 during the opening of the frangible panel 20., caused by the lifting force on the lifting rope 32 to rotate the tongue around the cutting line 44a and cause the movement of the body of the tongue. When the consumer opens the end of the container 10 when lifting the lifting line 32 from the tongue 26 of the cape shown in Figure 3, the tissue of the tongue 42 is folded along the cut line 44a, which results in the cutting line 44a is the support line of the angular displacement of the tongue. Because the cutting line 44a is at an oblique angle relative to the longitudinal central axis of the tongue A-A, the path of rotation of the tongue being lifted and the respective path below the tongue shoulder 30 it is in the same way, at an oblique angle relative to the longitudinal axis, since it is not aligned or parallel to the longitudinal central axis A- A. In this way, the shoulder 30 of the tongue 26 deviates downwards towards the longitudinal axis. frangible panel 20 at an angle relative to the central panel, such that the shoulder 30 of the tongue 26, comes in contact with the frangible panel 20 at a side point of the longitudinal central axis, generally identified as 38 in FIG. 7. Preferably, the initial point of contact of the tongue shoulder 30 is on the side of the frangible panel 20 towards the direction of notch propagation; that is, the side closest to the cut line region that propagates immediately after the initial break of the notch. For example, as shown in Figure 3 and 7, having a cut line 44a of the tongue at an oblique angle relative to the longitudinal central axis of the tongue, directs the tongue at an angle, such that the point of Initial contact of the shoulder 30 is adjacent to the shoulder adjacent the second segment 22b, generally at 38. After the initial burst of the notch, the lifting force is continued and the fracture of the notch propagates, such that the tongue continues deviating at an angle, maintaining the point of contact and leverage of the shoulder 30 generally to the region of the frangible panel 20 of the continuous propagation of the notch. This structure provides better leverage for the notch fracture by directing the opening force on the frangible panel 20 to the region adjacent to the notch fracture line. Further, as described above, the transition zone 22d of the groove 22 is a region of the groove in the frangible panel 22 that exhibits a relatively large resistance to the opening force, at least in part due to the curvilinear geometry of the segment. of transition 22d. Counting on the oblique angle of the cutting line 44a, the tongue is adapted to provide contact by the tongue shoulder 30, in the region of the frangible panel 20 which is close to the transition zone 22d, providing better leverage by the tongue and a soft fracture of the notch.

Another aspect of the present invention improves the opening with a structural component located between the tongue shoulder and the frangible panel 20 in the area adjacent to the second segment of the cutting line 22b. One inclusion has a thickened portion 82 of the tongue shoulder 30, adjacent the second cutting segment 22b, and is shown in Figure 5. An alternative inclusion has an embossed edge 84 or a depression in the frangible panel 20, adjacent to the second. cutting segment 22b below the shoulder of the tongue 30, and shown in Figure 6. Another inclusion has an asymmetric shape of the outer edge 31 of the tongue shoulder 30, with the portion 31a extending beyond the frangible panel 20, to the second and third cut line segments, 22b and 22c, as shown in FIGS. 1 and 8. All of these inclusions provide a better opening of the frangible panel 20, adapted to provide a directed contact with the tongue shoulder 30. in a portion of the frangible panel 20, adjacent to the second cut line segment 22 b, and to provide a better opening and leverage of the frangible panel 20 in the transition zone 22 d of the third segment of cutting line 22 c. As for the inclusion illustrated in Fig. 5, the tongue shoulder 30 has a first portion 80 and is adjacent to the second portion 82 having a greater thickness than the first portion 80. The second thickened portion 82, is found adjacent to the second cutting line 22 b, being closer to the second and third cutting line segments 22 b, and 22 c, than of the first shoulder portion 80. When the user applies the lifting force of the end of the tongue or clip, the second thickened portion 82, comes into initial contact with the frangible panel 20 adjacent to the second line cutting segment 22 b, generally in the area identified in FIG. 7. After the initial burst of the notch, the user continues to raise the end of the clip, in such a way that the thickened side 82 keeps in contact with the frangible panel 20 and provides leverage on the frangible panel 20 near the transition zone. 22 d, of the third cut line segment 22 c. Upon further opening of the weir by the user, the thickened portion 82 gradually loses contact with the frangible panel 20, while the first portion 80 of the shoulder 30 remains in contact through the remainder of the opening operation, when the fourth segment of cutting line 22e and the frangible panel 20 is deflected angularly within the package. As for the inclusion shown in Figure 6, a raised ledge 84 is located in the frangible panel 20 below the clip or tongue projection 30 and adjacent to the second cut line segment 22 b. Similar to the inclusion described above, which provided an asymmetric thickening of the shoulder 30 to direct contact between the shoulder 30 and the frangible panel 20 (Figure 5), the raised shoulder 84 shown in Figure 6 provides an asymmetrical height of the frangible panel. 20 below the shoulder 30. The raised shoulder 84 is preferably a small area of metal below the shoulder side of the clip 30, formed by bending the metal to project as surface 86 on the consumer side. The surface 86 is adapted to provide a raised surface that when the user applies the lifting force to the lifting end of the clip, the shoulder 30 is heavily leveraged against the frangible panel 20 immediately adjacent to the second cutting line segment 22 b , generally located in the position identified as 38 in figure 7. After the initial pop or "pop" of the notch, the user continues to raise the lifting line in such a way that the shoulder 30 maintains contact with the raised shoulder 84, to provide strong leverage on the frangible panel and is preferably formed to have a curvilinear length adapted to at least partially surround the rivet island 28. In addition, the flange 52 is preferably non-engraved head, like a recess on the public side and extending down the product side of the central wall 12. Although it is also possible that the edge 52 is formed in the opposite direction to to be an embossed ledge leaving the public side of the panel, said engraved edge should be kept within the confines of the vacuum region 48 of the clip fabric to avoid a fluffiness in the cape or stacking problems because the clip is raised by the engraved edge. The rim 52 is formed entirely within the exposed area 50 of the central panel 12, such that the rim is formed in the final stages of the conversion process, after the clip 26 is connected to the cape 10 when being stacked to the rivet 28 .

By forming a flange in the final steps of the conversion process, after marking and stacking the clip to the rivet 28, which provides an optimization of the loose metal in the region of the rivet 28, such as for example loose metal resulting from the conversion steps, including the frangible, marked panel, rivet formation or union of the clip to the rivet. Also, having the formation of the flange in the final stages of the conversion process, after marking and connecting the clip, has the benefit of allowing the appearance of the present invention to be practiced without expensive tool changes to add the tools for forming the flange with existing tools, and allows the manufacturer to readjust this manufacturing step to the existing conversion process. Although the preferred inclusion of this flange 52 is a continuous curvilinear "horseshoe", it should be noted that this edge 52 can also be formed as an area of larger flange size or as a series of ridges with depressions that combine at least partially encircle rivet 28 and rivet island 46. Rim 52 provides desirable rigidity of central panel 12 in the region around rivet 28, thereby reducing the amount of panel lifted as a result of the force of clip 26 exerted on the frangible panel. 20 when opening. The rigidity of the frangible panel 20 is mainly provided by the edge 52 that is being formed when a flange of the metal extracted in the exposed area 50 of the central panel 12 immediately adjacent the rivet 28 and the rivet island 46. The edge 52 has a first upright wall 54 and second upright wall 56, joined by a transition fold 58. The first and second upright walls of edge 52 are generally of the same height. Then, the panel of the wall 12 under the rivet island 46 and the rivet 28 itself are not at an angle relative to the rest of the wall of the panel 12, and are generally placed in the same plane defined by the panel wall. 12. This aspect of the edge is different from the prior art ends that are subjected to the stacking operation process that causes the coining of the metal and a small bend in the panel area outside the rivet island 46, resulting in a slope in the metal of the area around and below the rivet island 46, relative to the plane defined by the panel wall 12.

The edge of preference has an arcuate length and is located to partially encircle the rivet 28, just outside the rivet island 46 of the clip 26 and generally in opposition to the frangible panel 20. The arched ridge lines 52 have a first leg 60 and a second leg 62. Preferably, the first leg 60 and the second leg 62 at an equal distance from the groove 22. Preferably the metal is not thinned during the formation of the edge 52, and on the other hand the edge 52 is created by forming, or drawing, the metal between two opposing dies. The formation of the edge consequently attracts loose metal available in the region, caused by the marking or coining of the metal while the rivet 28 is being formed or coined from the metal when the clip is attached. The edge 52 also serves as a rigid beam in the wall of the panel immediately adjacent the rivet 28 and rivet island 46 in the region of the weir 48. By attracting the loose metal and providing a rigid beam, the edge 52 is adapted to provide a stiffness in the wall of the panel 12 around the rivet island 46 to decrease the lifting of the panel and improve the leverage of the clip during the opening of the frangible panel 20. The steps for forming the rim 52 preferably use tools shown in FIG. Figure 9. The lower support die 90 has an inward area 92 with upstanding walls 94, each having rounded top edges 96 a and 96 b with a radius of curvature. The upper die 98 has a protruding eyelet 100 with a thickness less than the thickness of the recess 92 of the die 90. The metal of the exposed area 50 of the wall panel 12 is located between the punches 90., 98, such that the product side 12b of the panel of the wall 12 is substantially supported by the lower die 90, and the eyelet 100 is adjacent to the public side 12a of the wall 12 panel. The upper die and lower 90, 98 are brought together so that the eyelet 100 removes the metal in the exposed area 50 within the recessed area 92 of the lower punch 90, and the metal of the exposed area 50 is bent over the rounded edge 96 of the upstanding walls 94. of the lower die 90, to form an edge 52 in the area 50. Preferably, the eyelet 100 has a thickness of about 0.020 to 0.040 inch and with a depth of the progressive eyelet 100 within the recess of the lower die is about 0.005 to 0.015.

Another aspect of the present invention provides a notch that is resistant to environmental factors that cause corrosion fatigue, with a smooth cutting line in terms of fracture and a consistent opening. According to this aspect of the invention 110 in the area bordering each side of the notch 22. And best shown in Figure 10, the declining segment 110 is preferably a downward slope, such that the frangible panel 20 is slightly smaller than the remainder of the panel of the wall 12. Figure 10 is a cross-sectional view showing not only the structure of this aspect of the invention, but also showing the method for making this structure between the upper dies 112 , 112 a and the lower dies, 114, 114 a. Upon beginning to bring the upper dies 112, 112 closer to the lower dies 114, 114 a, the panel metal of the wall 12 around the notch 22 is bent to form the slope segment 110 with the notch 22, within the slope of metal. The inclusion of Figure 10 has a single cut line 22, however, the principles of this aspect of the present invention can also be used for a common double notch with an anti-fracture notch, using a single declining segment 110, or segments multiple staggered. This process of forming a declining segment 110 in the area of the notch 22 is preferably formed immediately after the marking operation of the conversion process, but may also be incorporated within the marking operation. In any case, this step is preferably performed before placing the clip at the end so that the entire cutting line can be drawn within the inclined segment 110. It should also be noted that the lower multiple dies 114, 114 a, as well as the upper dies, 112 and 112 a, are adapted to be adjusted independently of each other, as for example by the use of a wedge below the dies. This configuration allows the manufacturer to adjust the tools in such a way that the declining section 110 is formed with sufficient slope to assist with the corrosion force, but not so much inclination to force or partially fracture the residue from the notch 23. Alternatively, the tools for forming the declining section 110 may have sloping surfaces (not shown) that generally follow a slope of the slope section 110 to support the metal of the region. The declining segment 110 has a first upper fold 116 leading to the first sloping edge 118 on the periphery of the frangible panel 20, immediately adjacent to the cutting line 22. A second sloping edge 112 on the wall of the panel 12 immediately outside of the frangible panel 20, extends outwardly from the notch to a second fold 120. And as described below, this structure allows a consistent opening and is adapted to provide the projectile effect during the opening process, and to provide resistance to fatigue by corrosion in the groove 22. Corrosion fatigue is a type of failure at the ends or ends which results in corrosion of the groove, primarily due to the combination of moisture buildup in the groove, metal sensitivity to corrosion and fatigue due to metal stress in the area of the groove 22. The problem of moisture in the groove is mainly due to the water that remains in the groove. out, after a container is washed by the automatic beverage filler. Also, said moisture may be trapped in the environment surrounding the strands when the filler uses shrinkable plastic to cover the trays or packing crates of the already filled containers. When the environmental temperature increases inside the shrinkable plastic and inside the notched ends of the already filled containers, the sensitivity of the metal is an inherent problem with the ends of the containers, which are commonly manufactured with aluminum or metal. The stress fatigue forces of the metal in the region of the groove 22 are caused by the internal pressure of the container which is increased by the high temperatures as a result of the pressure increase of the contents of the containers, commonly carbonated drinks. Said fatigue factors are bi-axial in the plane of the metal panel, and result in stress fatigue forces perpendicular to the notch 22, consequently, a force that effectively separates the notch. The declining segment 110 of the wall panel 12, reduces corrosion fatigue by generating a compressive fatigue component in the plane of the central panel 12 of the metal, compensating the stress fatigue forces described above. As a result, possible corrosion fatigue is prevented or diminished by the sloping or inclined segment 1 10, providing a compression fatigue component in the metal, which compensates the stress fatigue forces perpendicular to the notch. The anti projectile structure formed by this aspect of the invention is mainly due to the first inclined edge 118 which is located slightly below the second edge 122, when the frangible panel 20 is fractured during opening. More specifically, when the frangible panel 20 is initially opened by the burst or vent of the panel 20, a condition known as projectile can occur. Due to the pressure caused by the contents of the container, the frangible panel 20 can be projected as it moves over the remnant of the wall panel 12 during ventilation, and the internal pressure causes the continuous fracture of the notch when the frangible panel is projected upwards. By having a first inclined edge 118 (the outer edge of the frangible panel 20) moving slightly below the second inclined edge 112, (the exterior of the frangible panel 20), the frangible panel 20 is restricted from moving on the panel of the wall 12 , thus preventing the projectile effect. According to another aspect of the present invention, shown in Figure 11, the outer edge of the panel 18 of the central panel 12 has a stepped profile with a first fold 120 and a second lower fold 132, which falls in cascade to the area of Countersinking 16. The countersinking area 16 is narrow, with walls opposite the area, an inner wall 134 and an outer wall, being parallel. The outer wall 136 is connected by a clamping wall 140, which extends from the fold 144 to the outer wall 136 at an outward angle 142. The end of this configuration has an external diameter 146, as measured by the outer edge of the corkscrew 14. The corkscrew 14 must be placed in such a way that the end or end 10 can be bordered to the container, preferably within the parameters established and practiced in the industry. Accordingly, an important benefit of the illustration of Fig. 11 is that the geometry of the cape or end is adapted to provide a suitable position of the corkscrew 14, mainly due to the stepped outer edge 18 and the narrow countersink 16, with erect and parallel walls 134, 136. This is especially important when one seeks to make a thinner-thickness metal end, wherein the traditional geometry of said calibrated cape, often requires a larger flander that overrides the purpose of look for a minor calibration. Also, the geometry of this aspect of the invention allows a smaller metal gauge while maintaining the necessary strength to avoid faults. As an example of this aspect of the present invention, with an 0.0080-inch aluminum endplate that is intended to meet industry measurement standards such as end or end 202 (eg, being characterized as a diameter of 2 and 2/16) , the end 10 has an external diameter in the range between 2,330 to 2,350 of an inch, and a panel diameter (eg, the measured diameter of the vertical tangent to the internal radius of the bend 130) of about 1. 845 to 1.855 inch. The upper fold 130 of the outer edge panel 18 has an internal radius of curvature of approximately 0.015 inch, and the lower fold 132 of the outer edge panel 18 has an internal radius of 0.012 inch. A vertical transition segment 131 passes between the first fold 130 and the second fold 132. The inner wall 134 of the countersink 16 has an internal wall height, defined by a height 139 of the second fold 132, of approximately 0.040 inch, which is about half the height 138 of the panel of the wall 12, the height of the panel of the wall 12 preferably falls in the range of 0.077 to 0.085 in height. The outer wall 136 has a height less than the height 138 of the panel 12 and preferably less than 0.050 of an inch, with the inner and outer wall 134, 136 being in parallel, and the two being aligned perpendicular to the central panel 12. The angle 142 of the clamping wall 140 is preferably 10 ° to 15 ° in relation to the external wall 136, extending in straightness of the fold 122 at the junction between the outer wall 136 of the countersink 16 and the clamping wall 140. As described above , the height of the outer wall 136 is preferably below the height of the plane defined by the panel 12. Accordingly, the fold 144 is preferably located at or below the height of the first fold 130 of the outer edge 18. While that this example demonstrates the geometry of this inclusion of the present invention used in a cape of size 202, it should be appreciated that this structure may also be useful for another size of capes. For example, a line 204, 206, or 209 may be incorporated within the disclosed geometry of a stepped outer edge panel 18, narrow countersink 16, parallel walls of the countersink 16, and a wall extending at an angle below the height of the panel and joining the corkscrew 14. Although the invention has been described under the reference of preferred inclusions, it will be understood that those with knowledge of the subject that can make several changes and equivalents and that can be replaced by other elements without departing from the broader aspects of the invention. Also, it is intended that the broad claims do not specify details of a particular inclusion disclosed herein, as the best mode contemplated for carrying out the invention, should not be limited to said details. •

Claims (36)

1. CLAIMS We claim: 1 .- a clip and weir for packaging comprising: a central panel wall that has one side of product and a public side that has a tongue and a rivet; a frangible removable panel in the central panel of the wall at least defined by a frangible notch and a non-frangible hinge segment; the tab attached to the public side of the central panel of the wall by a rivet, and at least one portion of the frangible panel shoulder, a liftable end of the tongue being on opposite side to the tongue shoulder; a central fabric of the tongue between the shoulder and the raised end, the fabric having a hinge area and a rivet island area surrounding the rivet, the rivet island being at least partially surrounded by a vacuum section to provide an exposed area of the central panel, an edge in the central panel wall being entirely located in said exposed area. 2. - the clip and spillway of claim 1, wherein the edge is a non-engraved edge in the central wall panel that emerges on the public side of the central panel. 3. - the clip and weir of claim 1 or 2 wherein the tongue shoulder has an external asymmetric edge with the first portion and a second portion, the second portion of the tongue shoulder extending beyond the frangible panel that on the first portion of the shoulder. 4. - the clip and landfill of claim 1 wherein; the vacuum region is a curvilinear opening and the edge has an arched length that partially surrounds the rivet at a distance generally equal to the distance of the rivet along the length of the rim. 5. - the clip and the landfill of claim 4 wherein; the arched length of the edge comprises a semi-circular portion with a first leg at one end of the edge and a second leg at the opposite end of the first end, the first leg and the second leg being spaced at a distance from the notch of the panel frangible 6. - the clip and landfill of claim 1 wherein; the edge has an arcuate length partially surrounding the rivet, the opposite sides of the rim being at an approximate distance from the notch. 7. - a method for manufacturing a clip and landfill by converting a container without clip that it includes. Provide a clipless container with a central panel with a public side and a product side; Forming a rivet button in the center region of the center panel, the rivet button has a rivet projecting from the public side to the rivet base, forming a frangible notch on the public side of the center panel radially outward of the button of rivet, notch and a non-frangible hinge segment that defines the frangible panel; Securing tab for the public side of the central panel when securing the rivet to a portion of rivet tongue island, the tab has a vacuum region that at least partially surrounds the rivet island to provide an exposed area of the center panel; Formation of an edge in the exposed area of the central panel, the edge is formed between the first die with a projection and a second die of the opposite side with a recess that engages with said projection. 8. - the method of claim 7 wherein the step to form the edge in the exposed area includes forming an edge with an arcuate length and at least partially surrounding the area of the rivet island. 9. - the method of claim 7 wherein; the step to form the edge includes advancing the projection of the first die through the empty region of the tab to form a non-engraved edge with a depression on the public side and a projection of the panel side of the product. 10. - the method of claim 9 wherein during the step of edge formation, the rivet base is supported with a support area adjacent the recessive space of the second die. 1 1.- the method to improve the strength and opening of the metal container, with a lifting tab secured to a central panel wall to a rivet island of the tongue located to transfer a breaking force to the frangible notch of the panel central and to move a frangible panel partially defined by the marking notch, the improvement comprises; forming an edge in the immediately adjacent metal and partially surrounding the rivet island of the tongue, by creating a fold in the metal of the central wall panel between the first die having a protrusion or projection and a second die with a recess which substantially engages with the projection. 12. - the method of claim 1, wherein during the step to form the edge, the edge is formed entirely in a central panel region underlying the curvilinear opening in the tongue that partially surrounds the rivet island of the tongue. 13. - the method of claim 11 wherein the edge is formed as a final step in making the end of the container and after the tongue is secured to the end or end, during the step to form the edge, extracting the lax metal from the center panel and providing a rigid region of the central panel. 14. - a clip and weir for packaging comprising; a central wall panel that has a product side and a public side with a tongue and rivet; the tab is glued to the public side of the central wall panel by a rivet, at least one tongue protrusion extends over a frangible panel portion movable in the frangible panel wall, one end rising from the tongue being on the opposite side of the tongue shoulder; a central fabric of the tongue between the shoulder and the raised end, the fabric has a hinge region and a rivet island surrounding the rivet, the rivet island being at least partially surrounded by a vacuum region for provide an exposed area of the central panel; the frangible panel movable in the central wall panel, defined by a frangible notch and a non-frangible hinge segment, the frangible panel has a round geometry with a thickness greater than that of the tongue shoulder; the notch has a first cutting line with a vacuum region located at least partially below the tongue shoulder and extending to an immediate region adjacent to the tongue shoulder, and extending to an immediate region adjacent to the shoulder of the tongue, a second curvilinear cutting line extending from the first segment towards the outer portion of the edge of the panel to a third segment of cutting line with a curvilinear transition zone and extending to a fourth segment of cutting line; generally the tongue shoulder has an asymmetric external shape with a first portion extending beyond the frangible panel towards the curvilinear transition zone than the first portion of the shoulder. fifteen,. A clip and weir of claim 14, wherein the outer edge of the tab shoulder has a first curved edge and a second curved edge, the first curved edge having a greater radius than the second curved edge. 16. - the clip of claim 14, wherein the second portion of the tab shoulder is immediately adjacent to the vent region of the frangible panel. 17. - the clip of claim 14 further comprising a non-engraved edge formed in the exposed area of the central wall panel. 18. - the clip for a package that includes: a central wall panel defining a flat body with a product side and a public side with a tongue and a rivet on said public side; a frangible movable panel in the central wall panel defined by a frangible notch and a non-frangible notch segment; the tongue is attached to the public side of the central wall panel by a rivet and at least a portion of the tongue shoulder extends over a portion of the frangible panel and a liftable end or end, the tongue having a longitudinal and elongate body with a longitudinal central axis through the body; a tissue of the tongue between the portion of the shoulder and the liftable end of the clip the fabric has a central rivet island which is partially surrounded by a vacuum region and which has a hinge region adapted to be bent into the line of bending when a lifting force is applied to the tongue to provide leverage force by the shoulder against the frangible panel, the line of the hinge intersecting the longitudinal central axis of the tongue at an oblique angle. 19. - the clip of claim 18, wherein the vacuum region of the central fabric has a curvilinear geometry with a first end and a second end, the hinge line is defined by means of a linear segment between the first and second end. 20. - the clip and spillway of claim 18, wherein a curved and curvilinear edge is formed in the panel of the central wall and at least partially surrounds the rivet island. 21. - a clip and weir for a container that includes: a central wall panel that has one side for the product and a public side with a tab and a rivet, the central panel wall generally defines a close-up. A breakable frangible panel in the central wall panel defined by a frangible notch and a non-frangible hinge segment; The tongue attached to the public side of the center wall panel by a rivet, and at least a portion of the tongue shoulder extends over a portion of the frangible panel, a liftable end of the tongue opposite the tongue shoulder, tongue has an elongated body between the shoulder and the liftable end with the longitudinal central axis. A central fabric of the tongue between the shoulder of the tongue and the lifting end, the fabric has a rivet island defined by a curvilinear opening and a cut line or hinge, which passes between the first end and the second end of the tongue. curvilinear opening, the hinge line is at an oblique angle relative to the longitudinal central axis of the tongue. 22. - the clip and weir of claim 21, wherein a curvilinear edge is etched is formed in the central panel of the wall that at least partially surrounds the rivet island. 23. - the clip of claim 21, wherein the hinge line is defined by a linear segment between the first and second ends of the vacuum region. 24. - the clip of claim 21, wherein the tongue is adapted to rotate about the hinge line when a lifting force is applied to the end of the tongue, the hinge line is adapted to direct a straight tongue turning path in a composite angle in relation to the first plane defined by the panel of the wall. 25. - the clip of claim 24 wherein the linear path of the rotational movement of the tongue generally follows an angular displacement of the frangible panel. 26. - a clip for a container that includes: a central wall panel with one side of product and another public with a tongue and a rivet; the tongue is connected to the public side of the central wall panel by a rivet, and at least one tongue protrusion extends over part of the frangible panel in the wall of the frangible panel, one end of the tongue is in opposition to the liftable cape. A central fabric of the tongue between the shoulder and the cape, the fabric has a hinge region and a rivet island surrounding the rivet, the rivet island is at least partially surrounded by a vacuum region to provide a exposed area of the central panel; The frangible movable panel on the central wall panel is defined by a frangible notch and a frangible hinge segment; The notch has a first segment of cut line with a region of ventilation located at least partially below the shoulder of the tongue or clip and extending to a region immediately adjacent to the shoulder of the tongue, a second line segment of the tongue. a cut extending from the first segment towards the outer edge of the panel to a third cut line segment with a curvilinear transition zone extending to a fourth line segment from the remainder of the cut line; The tongue shoulder has an asymmetric thickness with a first thickened portion, the thickened portion of the second portion adjacent to the second section line segment. 27. - the clip of claim 26, wherein the frangible panel has a round geometry with a thickness substantially greater than that of the lug of the tongue. 28. - the clip of claim 26, comprising an edge without engraving, formed in the exposed area of the panel of the central wall. 29. - a clip for the container that includes: a central panel wall that has a product side and a public side with a tongue and a rivet; the tab is attached to the public side of the panel of the central wall by a rivet, and at least a portion of the tongue shoulder extends over a portion of the frangible panel in the wall of the frangible panel, a removable or removable cape the tongue and in contrast to the shoulder. A central tissue of the tongue between the shoulder and the detachable cape, the fabric has a hinge region and a rivet island that surrounds the rivet, the rivet island is partially surrounded by a vacuum section to provide an exposed area from the central panel; The frangible panel in the central panel wall is defined by a frangible notch, the frangible panel generally having a round geometry with a thickness greater than the lip protrusion; The notch has a first cut line with a vent region positioned at least partially below the tongue shoulder and extends to an immediately adjacent region of the shoulder, a second curvilinear cut line segment extending from the first segment towards the outer panel of the portion of the third segment of the cut line extending to a transition area extending to a fourth cut line segment of the remainder of the cut line; An edge segment located below a side portion of the tongue shoulder adjacent to a second segment of the groove, the edge segment has a surface to contact the tongue shoulder and which is adapted to direct a force of opening towards the transition zone when an opening force is applied when lifting the detachable rope so that the rope meets the frangible panel. 30. - a clip of claim 29, wherein an edge without etching formed by the exposed area of the panel of the central wall that at least partially surrounds the rivet island. 31. - a clip for a package that includes: a central panel wall that has a product side and a public side with a tab and a rivet; the tab is attached to the public side of the panel of the central wall by a rivet, and at least a portion of the tongue shoulder extends over a portion of the frangible panel in the wall of the frangible panel, a removable or removable cape the tongue and in contrast to the shoulder. A central tissue of the tongue between the shoulder and the detachable cape, the fabric has a hinge region and a rivet island that surrounds the rivet, the rivet island is partially surrounded by a vacuum section to provide an exposed area from the central panel; The panel wall has an inclined segment surrounding the notch and having a first fold leading to a first sloping edge of the frangible panel adjacent the notch, a second inclined edge on the wall panel outside the frangible panel that It is located immediately on the side of the notch and moving away from the notch to a second bend. 32. - the clip of claim 31, wherein the first edge is a fold up and the frangible panel is slightly below the notch. 33. - the clip of claim 31 wherein an edge is formed in the exposed area of the central panel and at least surrounding the rivet island. 34. - a clip for a container that includes: a central wall panel with a panel height and having one side of product and another public side with a tab and a rivet, the panel has an edge on the outer circumference with stepped profile with a first fold and a second bend joined by a transition segment generally in the vertical direction. A frangible panel removable in the panel of the central wall and which at least substantially defines a frangible notch and a non-frangible segment of the hinge; The tongue is connected to the public side of the central wall panel by a rivet, and at least a portion of the tongue shoulder extends over a part of the frangible panel, a liftable cape which is opposite the shoulder, central fabric of the tongue between the shoulder and the cape, the fabric has a hinge region and a rivet island surrounding the rivet, the rivet island is partially surrounded by a vacuum region to provide an exposed area of the central panel; An outward countersink, having an inner wall and an outer wall joined by a curve segment with an internal radius of curvature, and said wall being substantially parallel to said outer wall; A fastener that extends angularly to the outer wall to join the rivet corkscrew. 35. - a clip of claim 34, wherein the second bend is at a height about half the height of the panel and the support wall extends from the outer wall at an angle between the range of 10 ° to 15 ° . 36. - the clip of claim 34, wherein the non-engraved edge is formed in the exposed area of the panel of the central wall and at least partially surrounds the rivet island. SUMMARY The object of the present invention is to provide a closure for the container, having a central panel with 2 faces, one towards the interior of the product and another for the public. The upper part contains a part of the removable panel in the central part of the panel of generous dimensions, defined as a fragile segment composed of a hinge and a tongue inserted in the central part by a rivet, at least a portion of the tongue extends over a removable part of the panel. The tongue is raised from the back exerting a lever effect between the nose of the tongue and the region that rises ending in the region of the hinge and a surrounding region surrounding the rivet, the island of I rivet is partially surrounded by a free region to create the central part of the exposed area, forming a drop in the central part of the exposed area. It is also an object of the present invention to provide a final result with a first dotted line segment with a hole found under the nose of the tongue extending to the entire tongue region of the tongue, a second segment of dotted lines, now curvilinear extends from the first segment towards the outer edge of the panel, part of the third dotted line segment forming a curvilinear transition zone forming the fourth remaining line segment and forming a single dotted line, the nose of the tongue has a generally asymmetrical shape on the outer edge with a first and second part. The second part extends quite a lot on the detachable part of the panel towards the curvilinear transition zone than the first part of the nose. Another object of the present invention is to provide one end of the nose of the tongue having an asymmetric and thick, first part and second part. The second part is thick and adjacent to the second segment of dotted lines. Another object of the invention is that it provides a termination of a segmented droplet positioned below one side of the tongue portion adjacent to the second segment of the line. The drop-shaped segment has a surface for contacting the tongue and is adapted to direct an opening force towards the transition zone of the line at the moment when a force is applied to lift the tongue of the termination in such a way that the nose is applied against the panel. It is also an object of the present invention that provides a termination with the tongue with a longitudinal center crossing and a series of region of hinges adapted to bend to a linear hinge when the lifting is applied to the tongue termination to provide a level of force by means of the nose against the panel. The hinge line intercepts the longitudinal center crossing of the tongue at an oblique angle. Another object of the present invention which provides a tension-compressed component of the metal of the panel adjacent to the line, the invention provides an inclined segment that surrounds the point, with a first bend leading to the first inclination of the edge of the drop of the panel adjacent to the point. The inclined segment also has a second edge folded into the outer wall of the panel, the adjacent adjacent point, leading it away from the point to a second fold. Another object of the present invention is that which provides a geometry for the outer peripheral area having a gradual profile of the outer edge panel and a narrow hole with substantially parallel walls and an extensive angular wall below the height of the panel to another curved end . Another advantage and aspects of the invention is that they will appear with reference to the specifications, requirements and drawings presented.