Methods for making an easy-opening can end

Details Methods for making an easy-opening can end Methods for making an easy-opening can end

2005-01-04

2005-01-04

Larson, Lowell A. (Department: 3725)

Metal deforming

Process

Deforming sheet metal

C413S016000, C413S017000

Reexamination Certificate

active

06837093

ABSTRACT:
A method for making an easy-opening can end comprising providing an upper die and a lower die, at least one of the upper die and the lower die having a curved surface with a radius of 0.1 to 1 mm at the tip portion thereof, the other die having a flat surface at the tip portion thereof; and press-forming an end panel by using the upper die and the lower die to form a score on the upper surface or the lower surface of the end panel so that the end panel has a thickness of 0.025 to 0.08 mm at the thinnest portion thereof.

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