초록 ▼

An end closure for food and beverage containers is provided. The end closure comprises a central panel portion having an induced buckle coin and an interrupted panel coin positioned proximate to an inner panel wall to control the buckling location on the end closure. Thus, the end closure will buckl

An end closure for food and beverage containers is provided. The end closure comprises a central panel portion having an induced buckle coin and an interrupted panel coin positioned proximate to an inner panel wall to control the buckling location on the end closure. Thus, the end closure will buckle at a predetermined location away from the score and tear panel to avoid catastrophic failure and container leakage.

대표청구항 ▼

1. A metallic end closure with controlled buckling characteristics, comprising: a peripheral curl which is adapted for interconnection to a neck of a beverage container;a chuck wall extending downwardly from said peripheral curl;a countersink interconnected to a lower end of said chuck wall;an inner

1. A metallic end closure with controlled buckling characteristics, comprising: a peripheral curl which is adapted for interconnection to a neck of a beverage container;a chuck wall extending downwardly from said peripheral curl;a countersink interconnected to a lower end of said chuck wall;an inner panel wall extending upwardly from an interior portion of said countersink;a central panel interconnected to an upper portion of said inner panel wall, said central panel having a substantially planar surface oriented in a substantially horizontal plane;a pull tab having a nose end and a tail end, said pull tab operably interconnected to said central panel;a first score line in said central panel, which defines a substantially hinged tear panel and pour opening;at least one induced buckle coin positioned on said central panel and proximate to an outer peripheral edge of said central panel, said induced buckle coin extending around said central panel no greater than about 90 degrees as measured from a center point of said end closure;a panel radius defined by said upper portion of said inner panel wall and said outer peripheral edge of said central panel, said panel radius having a first radius of curvature, and wherein said panel radius comprises a continuous panel coin which extends continuously around said panel radius; anda non-continuous panel coin positioned proximate to said panel radius and interrupted proximate to said at least one induced buckle coin, wherein a furthermost point of said at least one induced buckle coin from said center point does not extend beyond an innermost edge of said non-continuous panel coin, and wherein any buckling of said metallic end closure is initiated proximate to said at least one induced buckle coin when a pressure within said beverage container is elevated above a predetermined level. 2. The metallic end closure of claim 1, wherein said at least one induced buckle coin is positioned on said central panel in a location proximate to said tail end of said pull tab. 3. The metallic end closure of claim 1, wherein said at least one induced buckle coin is raised above said horizontal plane of said central panel. 4. The metallic end closure of claim 3, wherein said induced buckle coin has at least one of an oval, a circular, a triangular, a football, a baseball, a baseball bat, a rectangular, a square, and a trapezoidal shape. 5. The metallic end closure of claim 1, wherein said non-continuous panel coin has a cross-sectional geometric configuration defined by a substantially flat upper surface and a rounded lower surface. 6. The metallic end closure of claim 1, wherein said continuous panel coin has a substantially flat upper surface. 7. The metallic end closure of claim 1, wherein the metallic end closure comprises only one induced buckle coin in one of four distinct quadrants having substantially equal areas, said one distinct quadrant substantially devoid of said score line. 8. A method of manufacturing an end closure with controlled buckling characteristics comprising: providing an end closure comprising: a peripheral curl;a chuck wall extending downwardly from said peripheral curl;a countersink interconnected to a lower end of said chuck wall;an inner panel wall extending upwardly from an interior portion of said countersink;a central panel interconnected to an upper portion of said inner panel wall, said central panel having a substantially planar surface oriented in substantially horizontal plane;a pull tab having a nose end and a tail end, said pull tab is operably interconnected to said central panel; anda first score line in said central panel, which defines a substantially hinged tear panel;forming at least one induced buckle coin in said central panel, said at least one induced buckle coin positioned proximate to a panel radius defined by said upper portion of said inner panel wall and an outer peripheral edge of said central panel;forming a continuous panel coin which extends continuously around said panel radius; andforming a non-continuous panel coin proximate to said panel radius, said non-continuous panel coin interrupted proximate to said at least one induced buckle coin, wherein a furthermost point of said at least one induced buckle coin from said center point does not extend beyond an innermost edge of said non-continuous panel coin, and wherein any buckling of said metallic end closure is initiated proximate to said at least one induced buckle coin when pressure within said beverage container is elevated above a predetermined level. 9. The method of manufacturing an end closure of claim 8, wherein said at least one induced buckle coin is positioned on said central panel in a location proximate to said tail end of said pull tab. 10. The method of manufacturing an end closure of claim 8, wherein said at least one induced buckle coin is raised above said horizontal plane of said central panel. 11. The method of manufacturing an end closure of claim 10, wherein said induced buckle coin has at least one of an oval, a circular, a triangular, a promotional, a rectangular, a square, and a trapezoidal shape. 12. The method of manufacturing an end closure of claim 8, wherein said non-continuous panel coin has a substantially linear cross-sectional shape. 13. The method of manufacturing an end closure of claim 8, wherein said continuous panel coin has a cross-sectional shape with a substantially flat upper surface and a rounded lower surface. 14. The method of manufacturing an end closure of claim 8, wherein said at least one induced buckle coin is positioned in only one of four distinct quadrants having substantially equal areas. 15. The method of manufacturing an end closure of claim 8, wherein the metallic end closure comprises only one induced buckle coin in one of four distinct quadrants having substantially equal areas, said one distinct quadrant substantially devoid of said score line. 16. A metallic end closure with controlled buckling characteristics, comprising: a peripheral curl which is adapted for interconnection to a neck of a beverage container;a chuck wall extending downwardly from said peripheral curl;a countersink with a first countersink radius of curvature interconnected to a lower end of said chuck wall;an inner panel wall extending upwardly from an interior portion of said countersink;a central panel with an outer peripheral edge interconnected to an upper portion of said inner panel wall at a panel radius, said central panel having a substantially planar surface oriented in a substantially horizontal plane;a first score line in said central panel, which defines a substantially hinged tear panel and pour opening;at least one induced buckle coin positioned proximate to said outer peripheral edge of said central panel, said at least one induced buckle coin having a width greater than 0.05 inches, and said at least one induced buckle coin extending upwardly from said central panel;a non-continuous panel coin positioned proximate to said panel radius and interrupted proximate to said at least one induced buckle coin, said non-continuous panel coin having an upper inclined surface positioned at a second angle relative to said substantially horizontal plane of said central panel; anda continuous panel coin region which extends continuously around said panel radius, wherein any buckling of said metallic end closure is initiated proximate to said induced buckle coin when a pressure within said beverage container is elevated above a predetermined level. 17. The metallic end closure of claim 16, wherein said continuous panel coin region has a substantially flat upper surface positioned at a first angle relative to said substantially horizontal plane of said central panel, and wherein said second angle is greater than said first angle. 18. The metallic end closure of claim 1, wherein said continuous panel coin is positioned closer to said at least one induced buckle coin than said non-continuous panel coin.