CN117203132A

CN117203132A - Metal container end having molded peripheral edge and related method

Info

Publication number: CN117203132A
Application number: CN202280026254.3A
Authority: CN
Inventors: I·M·坎贝尔; S·朱伦迪克
Original assignee: Novelis Inc Canada
Current assignee: Novelis Inc Canada
Priority date: 2021-02-05
Filing date: 2022-02-04
Publication date: 2023-12-08
Also published as: KR20230144559A; CA3210654A1; JP2024509705A; WO2022170343A1; MX2023009136A; EP4288346A1

Abstract

A metal container end (102) for a metal container (100) includes a central section (116) and a peripheral section (118) extending along a periphery of the central section. The peripheral section includes an edge (122) of the peripheral section, and the edge (122) includes a contact portion (126) and a non-contact portion (130). The contact portion (126) of the edge (122) extends (132) at a non-zero angle relative to the non-contact portion (130) of the edge (122).

Description

Metal container end having molded peripheral edge and related method

Citation of related application

The application claims the benefit of U.S. provisional patent application No. 63/199,964, filed on 5/2/2021, entitled "Metal Container end with molded perimeter edge and related method," the entire contents of which are hereby incorporated by reference.

Technical Field

The present application relates to metal containers, and more particularly to metal container ends that may be joined with a container body to form a metal container. Methods of making the metal container are also disclosed.

Background

Metal containers, such as those used to contain food or beverages (e.g., aluminum beverage cans), typically include a container body having an opening defined in one end, and a closure (referred to as a "container end" or "can end") designed to close the opening of the container body. The container body and can end are typically joined (e.g., by crimping or rolling together) at their peripheries to form a liquid-tight and gas-tight joint. While some container ends are flat disks, container ends are more commonly provided with raised, contoured, or curled peripheral edges that facilitate the joining process.

A coating or paint may be provided on the container end (as well as the container body) for decorative and/or other desired purposes. For example, the container end may be colored with various paints in various colors (e.g., blue, red, green, etc.). During the container end manufacturing process, the paint may be cut, chipped or otherwise damaged. This damage compromises the appearance of the can end as the aluminum substrate becomes very visible (sometimes between 5% -50% of the circumference) and the consumer may conclude that: the container and/or the contents of the container are of poor quality. Currently, this possibility of paint layer abrasion prevents some brand owners from using more colored ends in their products. Such damage may also create paint dust throughout the end fabrication process, which may damage equipment and/or present health risks. For example, dust generated by abrasion between the housing press and the ends of the transport paper sleeve package (mainly after transporting the housing to the balancer and then to the rails of the conversion press) must be collected to prevent air pollution and particulate pollution to the workplace. The dust generated may also adhere to the beverage side of the end and impair the cleanliness of the beverage itself.

Disclosure of Invention

The terms "application," "the application," "this application," and "the application" as used in this patent are intended to refer broadly to all subject matter of this patent and the patent claims that follow. Statements containing these terms should not be construed as limiting the subject matter described herein, or as limiting the meaning or scope of the patent claims that follow. The embodiments of the application covered by this patent are defined by the following claims rather than by this summary of the application. This summary is a high-level overview of the various embodiments of the application and introduces some concepts that are further described in the detailed description section that follows. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in isolation to determine the scope of the claimed subject matter. The subject matter should be understood by reference to appropriate portions of the entire specification of this patent, any or all of the accompanying drawings, and each claim.

According to certain embodiments of the present disclosure, a metallic container end includes a central section and a peripheral section extending along a periphery of the central section. The peripheral section includes an edge, and the edge includes a contact portion and a non-contact portion. The contact portion extends at a non-zero angle relative to the non-contact portion.

According to some embodiments of the present disclosure, a metallic container end includes a central section, a peripheral section extending along a periphery of the central section, an outer surface, and an inner surface. The distance from the outer surface to the inner surface is the thickness of the metal container end. The peripheral section includes an edge extending between the outer surface and the inner surface, and the edge includes a contact portion and a non-contact portion. The contact portion of the edge extends from the outer surface toward the inner surface and at a non-zero angle relative to the non-contact portion.

According to various embodiments of the present disclosure, a metallic container end includes a central section and a peripheral section extending along a periphery of the central section. The peripheral section has a cross-sectional thickness and includes an edge. The edge includes a contact portion and a non-contact portion, and the contact portion of the edge includes at least 50% of the cross-sectional thickness at the edge extending at an angle greater than about 0 ° and less than about 90 ° relative to the non-contact portion.

According to certain embodiments of the present disclosure, a metallic container end includes a central section and a peripheral section extending along a periphery of the central section. The peripheral section includes a bead between edges of the central section and the peripheral section, and a contact portion of the edges extends at a non-zero angle relative to a vertical axis prior to forming the bead.

According to certain embodiments of the present disclosure, a metallic container end includes a central section, a peripheral section extending along a periphery of the central section, an outer surface, and an inner surface. The distance from the outer surface to the inner surface is the thickness of the metal container end. The peripheral section includes an edge extending between the outer surface and the inner surface, and further includes a bead between the edge and the central section. The contact portion of the edge extends from the outer surface toward the inner surface and at a non-zero angle relative to a vertical axis prior to forming the bead.

According to certain embodiments of the present disclosure, a metallic container end includes a central section and a peripheral section extending along a periphery of the central section. The peripheral section has a cross-sectional thickness and includes a bead between the central section and an edge of the peripheral section. The contact portion of the edge including at least 50% of the cross-sectional thickness at the edge extends at an angle of greater than about 0 ° and less than about 90 ° relative to a vertical axis prior to forming the bead.

According to certain embodiments of the present disclosure, a method of forming a metallic container end includes blanking material to form the metallic container end such that the metallic container end includes a central section and a peripheral section extending along a periphery of the central section. The method includes molding an edge of the peripheral section and forming a contact portion of the edge, the contact portion extending at a non-zero angle relative to a vertical axis. The method further includes shaping the metal container end such that the peripheral section includes a bead between the central section and the rim.

The various embodiments described in this disclosure may include additional systems, methods, features, and advantages that are not necessarily capable of being explicitly disclosed herein but will be apparent to one of ordinary skill in the art upon review of the following detailed description and drawings. It is intended that all such systems, methods, features and advantages be included within this disclosure and be protected by the accompanying claims.

Drawings

Features and components of the following figures are shown to emphasize the general principles of the present disclosure. Corresponding features and elements throughout the various figures may be referenced by matching numerals for consistency and clarity.

Fig. 1 is a perspective view of a metal container having a container body and a container end in accordance with aspects of the present disclosure.

Fig. 2 is a cross-sectional view of the container end during end fabrication.

Fig. 3 is an enlarged view of a peripheral section of the container end of fig. 2 prior to forming a bead in the peripheral section.

Fig. 4 is an enlarged view of a peripheral section of the container end of fig. 2 after crimping has been formed.

Fig. 5 is an enlarged view of two peripheral sections of fig. 4 when two container ends are stacked.

Fig. 6 shows the stacked container ends during the end fabrication process.

Fig. 7 illustrates a stacked container end according to aspects of the present disclosure.

Detailed Description

The subject matter of embodiments of the present application is described with specificity herein to meet statutory requirements, but the description is not necessarily intended to limit the scope of the claims. The claimed subject matter may be embodied in other ways, may include different elements or steps, and may be used in conjunction with other present or future technologies. This description should not be construed as implying any particular order or arrangement among or between various steps or elements except when the order of individual steps or arrangement of elements is explicitly described. Directional references such as "upward", "downward", "top", "bottom", "left", "right", "front", and "rear" are intended to refer to the orientation illustrated and described in the figure(s) referring to the components and direction.

Certain aspects and features of the present disclosure relate to metal container ends and systems and methods for manufacturing metal container ends. The metal container end may be a variety of metal substrates including, but not limited to, aluminum alloys, steel-based materials, magnesium-based materials, copper-based materials, any other suitable metal or combination of materials. The metallic container ends of the present disclosure may generally be joined with a container body to form various types of metallic containers, including, but not limited to, beverage cans, food cans, aerosol cans, chemical storage cans, or containers and cans for other products.

The metallic container ends described herein each generally include a central section and a peripheral section extending along a periphery of the central section. The peripheral section includes an edge, and when formed, the peripheral section further includes a bead located between the edge and the central section. The edge of the peripheral section includes a contact portion that extends at a non-zero angle relative to the vertical axis of the metal container end prior to forming the bead. The contact portion of the rim increases the amount or surface area of the rim that contacts the peripheral section of the adjacent metal container end during the end fabrication process. Such increased contact may better distribute forces transferred to adjacent metal container ends and/or may minimize or reduce damage to adjacent metal container ends. The metallic container ends described herein may be particularly suitable for minimizing or reducing damage to paint or coatings on adjacent metallic container ends during the end fabrication process. By minimizing or reducing damage (e.g., paint wear), the amount of dust generated during the end-making process due to damage may be minimized or reduced, thereby minimizing or reducing potential damage to equipment and/or health risks to operators.

Fig. 1 shows an example of a metal container 100 having a container end 102 and a container body 104. The container end 102 may be joined to the container body 104 by a variety of suitable techniques including, but not limited to, crimp wrapping or other suitable techniques as desired. Paint and/or coatings may be provided on the container end 102 and the container body 104 as desired. In some non-limiting examples, the container end 102 includes paint that colors the container end 102 such that the container end 102 has a desired color appearance (e.g., green, red, blue, yellow, etc.).

In the example of fig. 1, the metal container 100 is a beverage can and optionally includes a score 106, a unitary pull tab 108, and a pop-up pull tab 110 located on a central section 116 of the container end 102. The metallic container end 102 includes an outer surface 112. Depending on the desired end product, the metallic container end 102 may optionally include a peripheral channel 120 disposed in the central section 116 proximate the peripheral section 118. Although the metal container 100 is shown as a beverage container, in other examples, the metal container 100 may be other types of metal cans and/or other metal containers, such as food cans, aerosol cans, chemical storage cans, or containers and cans for other desired products. It should be appreciated that additional features may be defined on or with the container end 102 as desired, depending on the particular type of metal container 100.

Fig. 2 shows the container end 102 prior to engagement with the container body 104. The container end 102 includes an outer surface 112, an inner surface 114, a central section 116, and a peripheral section 118. The peripheral section 118 extends along the periphery of the central section 116 and includes an edge 122 that extends from the outer surface 112 to the inner surface 114. A bead 124 may be defined between the edge 122 and the center section 116, and the bead 124 may be circular (i.e., have a non-zero curvature). The distance 129 (see fig. 3) from the outer surface 112 to the inner surface 114 is the thickness of the container end 102. As described above, the container end 102 may include paint and/or coatings. In some cases, a lacquer and/or coating may be provided on the inner surface 114 and/or the outer surface 112 as desired. In some cases, the outer surface 112 includes a colored paint such that the container end 102 has a colored appearance.

Fig. 3 and 4 show the peripheral section 118 of the container end 102 in more detail. Fig. 3 shows the peripheral section 118 prior to the forming process to form the bead 124, and fig. 4 shows the peripheral section 118 after the bead 124 is formed. As shown in fig. 3 and 4, the edge 122 includes a contact portion 126 that extends a distance 128 from the outer surface 112 toward the inner surface 114. In some examples, distance 128 is at least about 30% of distance 129. In some cases, distance 128 may be about 30% to about 100% of distance 129, such as at least 50% of distance 129, such as about 80% to about 100% of distance 129. In various examples, distance 128 may be substantially the same as distance 129, but in other examples, distance 128 may be less than distance 129 (i.e., less than 100% of distance 129). When distance 128 is less than distance 129, edge 122 further includes a non-contact portion 130 between contact portion 126 and inner surface 114. As shown in fig. 3 and 4, non-contact portion 130 may extend at a non-zero angle relative to contact portion 126.

Referring to fig. 3, in various examples, prior to forming the bead 124, the contact portion 126 extends at a non-zero angle 132 relative to an axis 134 defined by the non-contact portion 130. In examples where non-contact portion 130 is omitted, contact portion 126 may extend at any angle relative to inner surface 114 and/or outer surface 112, including, but not limited to, a right angle or a non-right angle. In some examples, the axis 134 may be substantially vertical prior to forming the bead 124, but need not be vertical in other examples. In some examples, non-zero angle 132 is from greater than about 0 ° to about 90 °. In certain examples, the non-zero angle 132 may be about 5 ° to about 30 °, such as about 5 °, about 6 °, about 7 °, about 8 °, about 9 °, about 10 °, about 11 °, about 12 °, about 13 °, about 14 °, about 15 °, about 16 °, about 17 °, about 18 °, about 19 °, about 20 °, about 21 °, about 22 °, about 23 °, about 24 °, about 25 °, about 26 °, about 27 °, about 28 °, about 29 °, and/or about 30 °. In other examples, the non-zero angle 132 may be less than about 5 ° or greater than about 30 °. In some non-limiting examples, the non-zero angle may be about 22 ° to about 42 °, such as about 22 °, about 23 °, about 24 °, about 25 °, about 26 °, about 27 °, about 28 °, about 29 °, about 30 °, about 31 °, about 32 °, about 33 °, about 34 °, about 35 °, about 36 °, about 37 °, about 38 °, about 39 °, about 40 °, about 41 °, and/or about 42 °. The angle 132 and distance 128 are controlled such that during end processing (e.g., when the container end 102 may contact other container ends 102), the contact portion 126 is configured to contact the peripheral section 118 of an adjacent container end 102. In various examples, when non-contact portion 130 is included, non-contact portion 130 may extend at an angle substantially parallel to vertical axis 134 prior to forming bead 124.

While the contact portion 126 is shown as being linear or planar, it should be appreciated that in other examples, the contact portion 126 may have a variety of suitable shapes or contours as desired. As one non-limiting example, the contact portion 126 may have a curved or arcuate profile, which optionally may match the shape or profile of the bead of the adjacent container end.

Fig. 4 shows the peripheral section 118 after the bead 124 is formed. As shown in fig. 4, after the bead 124 is formed, the contact portion 126 still extends at a non-zero angle relative to the non-contact portion 130 (i.e., the contact portion 126 is not parallel and/or coplanar with the non-contact portion 130).

Fig. 5 and 6 illustrate the container end 102 stacked during the end fabrication process. As shown in fig. 5 and 6, the contact portion 126 of one container end 102 may selectively contact the peripheral section 118 of an adjacent container end 102. Selective contact between the contact portion 126 and the peripheral section 118 may increase contact between adjacent container ends and better distribute forces acting on the container ends 102 during processing, thereby reducing or minimizing potential damage (e.g., paint wear) caused by contact between the rim 122 and the peripheral section 118.

The method of forming the container end 102 may include blanking material to form a metallic container end such that the container end 102 includes a central section 116 and a peripheral section 118 extending along a periphery of the central section 116. The method includes molding (e.g., stamping) the edge 122 of the peripheral section 118 and forming a contact portion 126 of the edge 122 that extends at a non-zero angle relative to the axis 134. In some non-limiting examples, molding the rim 122 may include placing the container end 102 on a support and forcing a mold or press (which has the desired contour of the rim 122) to engage the container end 102 and form the rim 122. In various examples, the molding of the edges 122 may be performed before the container ends 102 are stacked for transport by normal rails, as any rails require significant force to move the nested container ends 102. The force to move the nested container ends 102 may depend on the material used for the track (i.e., surface friction), the height of any number of tracks, any offset/mismatch between the various segments of the track, and the radius of the track whenever the direction of the track changes. In some examples, the higher the thrust, the higher the degree of paint wear generally. The molding of edge 122 may optionally be accomplished during a shell forming operation in a mold tool, on the inlet/outlet side of a rotary crimper, and/or within the crimper itself. In some cases, the sharp edge of the container end may be removed during or after blanking by stamping, milling, laser processing, or any other mechanical or ablative technique.

In some examples, rim 122 is molded prior to formation of container end 102 such that peripheral section 118 includes a bead 124 between central section 116 and rim 122. In other examples, the rim 122 is molded after the container end 102 is formed such that the peripheral section includes a bead 124. Other suitable techniques and tools may be utilized to form the edge 122 as desired, and the edge 122 need not be formed via molding. In certain embodiments, modification of the container end 102 may be accomplished by adjusting a tool. In one non-limiting example, the can end shell forming tool may be modified such that the incoming sheet of material is bent downward at an angle corresponding to the desired angle of inclination of the edge 122 prior to the blanking operation. Such a process may include the steps of, but is not limited to, clamping a sheet of material at a blank and draw die such that the material at the can end edge is bent downward; creating a beveled edge by separating material using a cutting edge; and forming the end by drawing the material using the blank and drawing die, unbending the material, and straightening the material. In such a non-limiting example, after the material has passed through the entire forming operation, the edge 122 of the can end is now inclined at an angle relative to a line perpendicular to the outer surface of the can end.

The method may optionally include stacking a plurality of container ends 102 such that each contact portion 126 of the peripheral section 118 contacts another container end 102.

Fig. 7 illustrates another example of a stacked container end 702 according to various embodiments. In the example of fig. 7, the entire edge 122 is the contact portion 126, and the contact portion 126 is substantially perpendicular to adjacent portions of the inner surface 114 and the outer surface 112. The peripheral section 118 has a different shape than the container end 102 with the rim 122 having a central axis 736 such that the rim 122 of the container rim 702 has a central axis 738 offset from the central axis 736 by an offset angle 740. In various cases, the offset angle is about 22 ° to about 42 °, such as about 22 °, about 23 °, about 24 °, about 25 °, about 26 °, about 27 °, about 28 °, about 29 °, about 30 °, about 31 °, about 32 °, about 33 °, about 34 °, about 35 °, about 36 °, about 37 °, about 38 °, about 39 °, about 40 °, about 41 °, and/or about 42 °. In various examples, changing the shape of the peripheral section 118 by the offset angle 740 may increase the percentage or amount of the contact portion 126 that contacts the adjacent container end 702. In various aspects, the offset angle 740 provides a predetermined increase in diameter or distance across the edges 122 of the container end 702. In this case, the diameter between edges 122 increases compared to conventional container ends. In other words, referring to FIG. 2, the offset angle 740 provides a predetermined increase in diameter or distance between the edge 122 on the left side of the figure and the edge 122 on the right side of the figure. In some non-limiting example cases, angle 740 increases the diameter from about 0.14mm to about 0.20mm. In one non-limiting example, angle 740 increases the diameter by about 0.16mm.

The following provides a set of exemplary embodiments, including at least some embodiments explicitly enumerated as "examples," which provide additional description of various example types according to the concepts described herein. These examples are not meant to be mutually exclusive, exhaustive or limiting; and the application is not limited to these exemplary examples but encompasses all possible modifications and variations within the scope of the appended claims and equivalents thereof.

Example 1. A metal container end comprising: a central section; and a peripheral section extending along a periphery of the central section, wherein the peripheral section comprises an edge, wherein the edge comprises a contact portion and a non-contact portion, and wherein the contact portion extends at a non-zero angle relative to the non-contact portion.

Example 2 the metal container end of any preceding or subsequent example or combination of examples, wherein the peripheral section comprises a cross-sectional thickness, and wherein the contact portion comprises at least 50% of the cross-sectional thickness at the edge.

Example 3 the metal container end of any preceding or subsequent example or combination of examples, wherein the contact portion comprises less than 100% of the cross-sectional thickness at the edge.

Example 4 the metal container end of any preceding or subsequent example or combination of examples, wherein the non-zero angle is from about 5 ° to about 30 °.

Example 5 the metal container end of any preceding or subsequent example or combination of examples, wherein the metal container end comprises an outer surface and an inner surface, wherein the edge extends from the outer surface to the inner surface, and wherein the contact portion of the edge extends from the outer surface to the inner surface.

Example 6 the metal container end of any preceding or subsequent example or combination of examples, wherein the non-contact portion is located between the inner surface and the contact portion.

Example 7 the metal container end of any preceding or subsequent example or combination of examples, wherein the peripheral section further comprises a bead between the central section and the rim.

Example 8 the metal container end of any preceding or subsequent example or combination of examples, wherein the contact portion extends at a non-zero angle relative to the non-contact portion prior to forming the bead.

Example 9. The metal container end of any preceding or subsequent example or combination of examples, wherein the metal container end comprises aluminum or an aluminum alloy.

Example 10 a beverage can comprising: a tank main body; and a metallic container end according to any preceding or subsequent example or combination of examples as a beverage can end joined to the can body.

Example 11. A metal container end, comprising: a central section; a peripheral section extending along a periphery of the central section; an outer surface; and an inner surface, wherein a distance from the outer surface to the inner surface is a thickness of the metal container end, wherein the peripheral section comprises an edge extending between the outer surface and the inner surface, wherein the edge comprises a contact portion and a non-contact portion, and wherein the contact portion of the edge extends from the outer surface toward the inner surface and at a non-zero angle relative to the non-contact portion.

Example 12 the metal container end of any preceding or subsequent example or combination of examples, wherein the contact portion of the edge comprises at least 50% of a thickness at the edge.

Example 13 the metal container of any preceding or subsequent example or combination of examples, wherein the non-zero angle is from about 5 ° to about 30 °.

Example 14. The metal container end of any preceding or subsequent example or combination of examples, wherein the metal container end comprises aluminum or an aluminum alloy.

Example 15 the metal container end of any preceding or subsequent example or combination of examples, wherein the peripheral section further comprises a bead between the rim and the central section.

Example 16 a beverage can comprising: a tank main body; and the metal container end of any preceding or subsequent example or combination of examples as a beverage can end joined to the can body, wherein the central section comprises at least one of a tab or a score line.

Example 17 a metal container end comprising: a central section; and a peripheral section extending along a periphery of the central section, wherein the peripheral section has a cross-sectional thickness and comprises an edge, wherein the edge comprises a contact portion and a non-contact portion, and wherein the contact portion of the edge comprising at least 50% of the cross-sectional thickness at the edge extends at an angle greater than about 0 ° and less than about 90 ° relative to the non-contact portion.

Example 18 the metal container end of any preceding or subsequent example or combination of examples, wherein the angle is from about 5 ° to about 30 °.

Example 19 a beverage can comprising: a tank main body; and a metal container end according to any preceding or subsequent example or combination of examples as a beverage can end joined to the can body, wherein the metal container end comprises aluminum or an aluminum alloy.

Example 20. A method of forming a metallic container end, the method comprising: blanking material to form the metal container end such that the metal container end includes a central section and a peripheral section extending along a periphery of the central section; molding an edge of the peripheral section and forming a contact portion of the edge, the contact portion extending at a non-zero angle relative to a non-contact portion of the edge; and shaping the metal container end such that the peripheral section includes a bead between the central section and the rim.

Example 21 the method of any preceding or subsequent example or combination of examples, wherein shaping the metal container end includes shaping the metal container end such that the curl has a non-zero curvature.

Example 22 the method of any preceding or subsequent example or combination of examples, further comprising stacking the metal container end on another metal container end such that the contact portion of the perimeter section contacts the other metal container end.

Example 23 the method of any preceding or subsequent example or combination of examples, wherein the contact portion of the edge comprises at least 50% of a thickness of the metal container end at the edge, and wherein the non-zero angle is about 5 ° to about 30 °.

Example 24 the method of any preceding or subsequent example or combination of examples, wherein the metal container end comprises aluminum or an aluminum alloy, and wherein the metal container end is a beverage can end.

Example 25 a method of forming a beverage can, comprising: forming the beverage can end according to the method of any preceding or subsequent example or combination of examples; and joining the beverage can end to the can body.

Example 26. A metal container end, comprising: a central section; and a peripheral section extending along a periphery of the central section, wherein the peripheral section includes a bead between edges of the central section and the peripheral section, and wherein a contact portion of the edges extends at a non-zero angle relative to a vertical axis prior to forming the bead.

Example 27. A metal container end, comprising: a central section; and a peripheral section extending along a periphery of the central section, wherein the peripheral section has a cross-sectional thickness and includes a bead between an edge of the central section and the peripheral section, and wherein a contact portion of the edge including at least 50% of the cross-sectional thickness at the edge extends at an angle greater than about 0 ° and less than about 90 ° relative to a vertical axis prior to forming the bead.

The foregoing aspects are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the disclosure. Many variations and modifications may be made to the above-described embodiments without departing substantially from the spirit and principles of the disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure and all possible claims directed to various aspects or combinations of elements or steps are intended to be supported by this disclosure. Furthermore, although specific terms are employed herein, as well as in the claims that follow, such terms are used in a generic and descriptive sense only and not for purposes of limitation on the described application, nor of the claims that follow.

Claims

1. A metal container end, comprising:

a central section; and

a peripheral section extending along a periphery of the central section,

wherein the peripheral section comprises an edge,

wherein the edge comprises a contact portion and a non-contact portion, and

wherein the contact portion extends at a non-zero angle relative to the non-contact portion.

2. The metal container end of claim 1, wherein the peripheral section comprises a cross-sectional thickness, and wherein the contact portion comprises at least 50% and less than 100% of the cross-sectional thickness at the edge.

3. The metallic container end of claim 1, wherein the non-zero angle is from about 5 ° to about 30 °.

4. The metal container end of claim 1, wherein the metal container end comprises an outer surface and an inner surface, wherein the rim extends from the outer surface to the inner surface, and wherein the contact portion of the rim extends from the outer surface to the inner surface.

5. The metal container end of claim 4, wherein said non-contact portion is located between said inner surface and said contact portion.

6. The metal container end of claim 1, wherein the peripheral section further comprises a bead between the central section and the rim.

7. The metal container end of claim 1, wherein the metal container end comprises aluminum or an aluminum alloy.

8. A beverage can, comprising:

a tank main body; and

the metal container end of claim 1 as a beverage can end joined to the can body.

9. A metal container end, comprising:

a central section;

a peripheral section extending along a periphery of the central section;

an outer surface; and

the inner surface of the inner wall of the inner tube,

wherein the distance from the outer surface to the inner surface is the thickness of the metal container end,

wherein the peripheral section includes an edge extending between the outer surface and the inner surface,

wherein the edge comprises a contact portion and a non-contact portion, and

wherein the contact portion of the edge extends from the outer surface toward the inner surface and at a non-zero angle relative to the non-contact portion.

10. The metal container end of claim 9, wherein the contact portion of the rim comprises at least 50% of the thickness at the rim.

11. The metallic container end of claim 9, wherein the non-zero angle is from about 5 ° to about 30 °.

12. The metal container end of claim 9, wherein the peripheral section further comprises a bead between the rim and the central section.

13. A beverage can, comprising:

a tank main body; and

the metal container end of claim 9 as a beverage can end joined to the can body, wherein the central section comprises at least one of a tab or a score line.

14. The metal container end of claim 9, wherein the peripheral section has a cross-sectional thickness, wherein the contact portion of the edge comprises at least 50% of the cross-sectional thickness at the edge, and wherein the non-zero angle is greater than 0 ° and less than 90 ° relative to the non-contact portion.

15. A method of forming a metal container end, the method comprising:

blanking material to form the metal container end such that the metal container end includes a central section and a peripheral section extending along a periphery of the central section;

molding an edge of the peripheral section and forming a contact portion of the edge, the contact portion extending at a non-zero angle relative to a non-contact portion of the edge; and

the metal container end is shaped such that the peripheral section includes a bead between the central section and the rim.

16. The method of claim 15, wherein shaping the metal container end comprises shaping the metal container end such that a curl has a non-zero curvature.

17. The method of claim 15, wherein the metal container end is a first metal container end, and wherein the method further comprises stacking the first metal container end on a second metal container end such that the contact portion of the peripheral section contacts the second metal container end.

18. The method of claim 15, wherein the contact portion of the rim comprises at least 50% of a thickness of the metal container end at the rim, and wherein the non-zero angle is about 5 ° to about 30 °.

19. The method of claim 15, wherein the metal container end comprises aluminum or an aluminum alloy, and wherein the metal container end is a beverage can end.

20. A method of forming a beverage can, comprising:

forming a beverage can end according to the method of claim 19; and

the beverage can end is joined to a can body.