Fluid tight closure of thermosetting plastic foil

Details Fluid tight closure of thermosetting plastic foil Fluid tight closure of thermosetting plastic foil

1978-10-11

1980-04-08

Norton, Donald F.

Bottles and jars

Closures

Cap type

215326, B65D 4122

Patent

active

041968204

ABSTRACT:
The closure is made of a thermosetting plastic foil that is brought in contact with a projecting lip on the rim of a bottle neck whereby a central part of the foil is irreversibly deformed by heating and stretching over the upper surface of the lip. The closing of the bottle by stretching the heated foil portion is made in a single operational step.

REFERENCES:
patent: 2604223 (1952-07-01), Horning
patent: 2772802 (1956-12-01), Woydatt
patent: 2869746 (1959-01-01), Wilcox
patent: 2885105 (1959-05-01), Heyl et al.
patent: 2947432 (1960-08-01), Marcel
patent: 3189208 (1965-06-01), Jowett
patent: 3862614 (1975-01-01), Kovac

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