Method of producing an easy-opening closure

Details Method of producing an easy-opening closure Method of producing an easy-opening closure

1974-05-14

1976-09-14

Lanham, C.W.

B21D 5138

Patent

active

039800342

ABSTRACT:
This specification discloses a method of forming an easy-opening closure of the type wherein there is overlap between the closure member and the surrounding container member comprising forming a bulge in the hinge area of the closure and subsequently flattening this bulge to achieve displacement of the closure member into overlapping relationship with the surrounding container member. The closure member must have a non-diverging configuration extending away from the hinge member, for example, triangular or semi-circular configurations.

REFERENCES:
patent: 625055 (1899-05-01), Painter
patent: 2261117 (1941-11-01), Jack, Jr.
patent: 3266452 (1966-08-01), Taylor
patent: 3472415 (1969-10-01), Woodruff
patent: 3759206 (1973-09-01), Dalli et al.
patent: 3760752 (1973-09-01), Geiger

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