Aluminum impact extruded bottle with threaded neck made from recycled aluminum and enhanced alloys
AssigneeBall Corporation
InventorsJohn L. Siles, Matthias K. van de Liefvoort, Kevin Reed Jentzsch
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Abstract
The present invention relates generally to forming a threaded neck in a metal bottle manufactured by a process known as impact extrusion. More specifically, the present invention relates to methods, apparatus and alloy compositions used in the impact extrusion manufacturing of containers and other articles with sufficient strength characteristics to allow threading the container necks to receive a threaded closure on the threaded neck.
Claims18
A method of forming a slug of a recycled aluminum alloy for use in manufacturing a metallic bottle in an impact extrusion process, the recycled aluminum alloy of the slug having a mechanical strength such that integral threads can be formed on the metallic bottle for a roll on pilfer proof (ROPP) closure, the method comprising:
- melting a scrap aluminum material;
- blending the melted scrap aluminum material with a first aluminum alloy to form the recycled aluminum alloy, wherein said recycled aluminum alloy comprises about 80 wt. % of scrap aluminum material, and wherein the recycled aluminum alloy is adapted for use in an impact extrusion process and the recycled aluminum alloy has a mechanical strength such that the integral threads for the roll on pilfer proof (ROPP) closure can be formed on a metallic bottle formed from the slug in the impact extrusion process;
- casting the recycled aluminum alloy into a slab;
- rolling the slab to a specified thickness;
- cooling the slab;
- and
- punching a slug from the cooled slab.
A method of forming a slug of a recycled aluminum alloy for use in manufacturing a metallic bottle in an impact extrusion process, the recycled aluminum alloy of the slug having a mechanical strength such that integral threads for a roll on pilfer proof (ROPP) closure can be formed on the metallic bottle, the method comprising:
- melting a scrap aluminum material, wherein the scrap aluminum material comprises:
- between about 0.20 wt. % Si and about 0.32 wt. % Si;
- between about 0.47 wt. % Fe and about 0.59 wt. % Fe;
- between about 0.78 wt. % Mn and about 0.90 wt. % Mn;
- between about 0.54 wt. % Mg and about 0.66 wt. % Mg;
- between about 0.06 wt. % Zn and about 0.18 wt. % Zn;
- between about 0.00 wt. % Cr and about 0.08 wt. % Cr;
- and
- between about 0.00 wt. % Ti and about 0.08 wt. % Ti;
- blending the melted scrap aluminum material with a first aluminum alloy to form the recycled aluminum alloy, wherein said recycled aluminum alloy comprises about 80 wt. % of scrap aluminum material;
- casting the recycled aluminum alloy into a slab;
- rolling the slab to a specified thickness;
- cooling the slab;
- and
- punching a slug from the cooled slab.
A method of forming a slug of a recycled aluminum alloy for use in manufacturing a metallic bottle in an impact extrusion process, the recycled aluminum alloy of the slug having a mechanical strength such that integral threads can be formed on the metallic bottle for a roll on pilfer proof (ROPP) closure, the method comprising:
- melting a scrap aluminum material;
- blending the melted scrap aluminum material with a first aluminum alloy to form the recycled aluminum alloy, wherein said recycled aluminum alloy comprises between 70 wt. % and 80 wt. % of scrap aluminum material, and wherein the recycled aluminum alloy is adapted for use in an impact extrusion process and the recycled aluminum alloy has a mechanical strength such that the integral threads for the roll on pilfer proof (ROPP) closure can be formed on a metallic bottle formed from the slug in the impact extrusion process;
- casting the recycled aluminum alloy into a slab;
- rolling the slab to a specified thickness;
- cooling the slab;
- and
- punching a slug from the cooled slab.
Dependencies are inferred from the claim text.