Cap with an induction seal closure

Details Cap with an induction seal closure Cap with an induction seal closure

1993-03-08

1995-01-17

Moy, Joseph Man-Fu

Bottles and jars

Closures

Retained by bonding or adhesive means

215347, 428 357, 428347, B65D 5502

Patent

active

053819136

ABSTRACT:
A cap with an induction seal closure for sealing the pouring opening of a container, the induction seal closure comprising a polymer sealing layer (27) capable of being heat-sealed to the top surface of the pouring opening of the container, an aluminum foil (22) for heat-sealing said sealing layer by inductive heating of the aluminum, a first releasing layer (25) between said aluminum foil and said sealing layer and a second releasing layer (21) between said aluminum foil and the top wall of said cap, the releasing power of said second releasing layer (21) being greater than that of said first one (25) so that upon removal of the cap from a sealed container the aluminum foil (22) remains adherant to the sealed container instead of to the cap while yet being easily peelable from the container as a consequence of the presence of said first releasing layer (25).

REFERENCES:
patent: 4452842 (1984-06-01), Borges et al.
patent: 4576297 (1986-03-01), Larson
patent: 4596338 (1986-06-01), Yousif
patent: 4666052 (1987-05-01), Ou-Yang
patent: 4930646 (1990-06-01), Emslander
patent: 4935273 (1990-06-01), Ou-Yang

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