Crown Packaging Technology, Inc.

Philip Alan Marriot

Paul Robert Dunwoody

Andrew Robert Lockley

Stephen John Osborn

There is disclosed herein a method of forming a can end comprising: holding a peripheral portion of a blank between inner () and outer () peripheral tool sets; drawing a central portion of the blank against an outer center panel tool () having a central region and a sloping peripheral edge () extending to a peripheral wall () by moving the outer center panel tool () inwardly relative to the peripheral tool sets to form a drawn can end shell (); and reforming the can end shell () against an inner center panel tool () having a central region and a peripheral region by moving the inner center panel tool () outwardly relative to the peripheral tool sets to reform the drawn central portion to have a center panel defined by the central region of the inner center panel tool () and a recessed reinforcing structure extending around the center panel, wherein the sloping peripheral edge () of the outer center panel tool () has a convex radius of curvature of 2 mm or more and 30 mm or less between the central region of the outer center panel tool () and the peripheral wall () of the outer center panel tool (). A related apparatus is also disclosed.

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Oxfordshire, United Kingdom

Philip Alan Marriot