Abstract: A system for forming a score in a material includes an aluminum can and a tool. The aluminum can includes a can end, and an interior of the can end includes a coating. The tool includes a tool holder and a scoring knife. The scoring knife includes a proximal end configured to form the score in the can end. The proximal end has a width configured to minimize feathering of the coating when the score is punctured.

Abstract: This application discloses 3XXX aluminum alloys useful in fabricating can ends and tabs used for opening cans, particularly AA3104 and AA3204 aluminum alloys. This application discloses 3XXX aluminum alloys useful in fabricating cans comprising a body, end and tab, particularly AA3104 and AA3204 aluminum alloys.

Abstract: The invention relates to an end wall of a metal container having a score therein. The end wall is made of a composite metal sheet made of two or more metal layers, one of the layers being made of an aluminum alloy of high strength (e.g. a high magnesium alloy such as AA5182, AA5042 or AA5082, optionally with increased Mg), and another of the layers being made of an aluminum alloy having a good resistance to stress corrosion cracking (e.g. aluminum alloys AA3004, AA3104, AA5006 or AA5005), wherein at least the bottom of the score is formed by a surface of the alloy of good resistance to stress corrosion cracking.

Abstract: The invention relates to a method and apparatus for conditioning metal container ends and for removing particles and accumulated dust. The apparatus, in a preferred form, comprises a minimum of two and preferably three shafts, each shaft being rotatable about a longitudinal axis of rotation and each shaft having a helical groove extending around the shaft at an outer surface thereof. A drive rotates the shafts about their axes of rotation. The shafts are aligned and positioned to receive therebetween container ends introduced into the apparatus from an entrance and convey them to an exit with the peripheries of the container ends engaged in the grooves of the shafts such that rotation of the shafts causes the grooves to release particles from the peripheries. Associated dust removal equipment then removes the particles so that dust is not generated in downstream equipment for the utilization of the container ends.

Abstract: Lightweight beverage containers disclosed herein require less metal per container, exhibit less earing and have one or more of the following features: 1) a reduced seam between the can end and the can body, 2) a side wall having vertically disposed alternating portions of relatively thicker and relatively thinner metal, 3) a can end dimensioned to fit within the domed bottom of a vertically adjacent similar can when stacked, 4) a can body produced from an acircular blank dimensioned to produce said can body without ears, and 5) a can body produced from a cup having a variable radius between the side of said cup and the bottom thereof.