Easy open can end

Details Easy open can end Easy open can end

1987-11-16

1989-02-07

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

413 12, 413 15, B65D 4132

Patent

active

048026034

ABSTRACT:
A can end (1) made from metal for cans whose contents is under inside pressure is provided with at least one opening tab (4) partly punched from the end leaving a hinge area (6) and a relative aperture (2) formed by the partial punching, with the opening tab (4) and/or the area of the end surrounding the aperture (2) being cold formed so that the edge area (8) of aperture (2) covers the edge area (4a) of opening tab (4) on the end outside (1a). On the end inside (1b), plastisol (10) is applied in ring-form to the edge areas (4a, 8) of opening tab (4) and of aperture (2) and jellied under heating. Before its application and gelation respectively, the plastisol (10) has a viscosity .eta..sub.D4441s -1 (40.degree. C.) of about 2000-2800 mPa.s, and an edge angle .alpha. of about 0.4-1.0 N/mm.sup.2, and a maximum elongation of 120-250%.

REFERENCES:
patent: 3972445 (1976-08-01), Debenham
patent: 4054228 (1977-10-01), Balocca et al.
patent: 4128186 (1978-12-01), Gane
patent: 4134517 (1979-01-01), Rhoades
patent: 4196823 (1980-04-01), Madden et al.
patent: 4311249 (1982-01-01), Joyce
patent: 4319692 (1982-03-01), Gundlach

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