Metal sealing or closure cap with tear line

Details Metal sealing or closure cap with tear line Metal sealing or closure cap with tear line

1991-10-18

1993-06-29

Elkins, Gary E.

Bottles and jars

Closures

Frangible member or portion

215254, 220276, B65D 4132

Patent

active

052226166

ABSTRACT:
The invention relates to a metal cap, the thickness of the skirt of which is 0.06 to 0.4 mm, with at least one tearing ling which includes a cut or tear line and alternating transverse reliefs and external recesses, each recess ending in the tearing line or at least within 0.5 mm thereof, the thickness of the bottom wall of the tear line being 20 to 70% of the thickness of the skirt, and the tearing line having a bottom thickness which is at most equal to 70% of the thickness of the skirt. The invention also relates to a method of producing the cap. The invention is applicable to obtaining tearable tabs for metal caps which tabs tear entirely along the rear line provided without dangerous edges.

REFERENCES:
patent: 1712102 (1929-05-01), Carvalho
patent: 1881529 (1932-10-01), Hammer
patent: 4391383 (1983-07-01), Babiol
patent: 5012942 (1991-05-01), Druesne et al.

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