Method of making can closures

Details Method of making can closures Method of making can closures

1978-05-23

1980-03-11

Keenan, Michael J.

Receptacles

Compartmented container

Compartment partition is movable or removable

220268, B21D 5144

Patent

active

041922441

ABSTRACT:
A novel method of making an easy-open can end closure for insuring better control over the integrity of the closure, especially in tougher sheet metal such as steel, comprises the steps, after forming and longitudinally scoring-to-fracture the closure, of (a) providing a swageable strip of the metal extending along an edge of the line of fracture and overlying that edge, and (b) then swaging and dilating that strip radially into more intimate overlapping relation to the line of fracture to cause it to tightly close.

REFERENCES:
patent: 3760752 (1973-09-01), Geiger
patent: 4006700 (1977-02-01), Lovell et al.
patent: 4031836 (1977-06-01), Grise et al.

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