Peelable adhesive-based package seal and method of making same

Details Peelable adhesive-based package seal and method of making same Peelable adhesive-based package seal and method of making same

1991-03-08

1993-01-19

Weinstein, Steven

Food or edible material: processes, compositions, and products

Packaged or wrapped product

156247, 1562726, 206469, 206470, 220359, 22912535, 426129, 428 40, B65D 8500

Patent

active

051805995

ABSTRACT:
A process for forming an adhesive-based peelable, hermetic seal for a package in which the adhesive ruptures uniformly when the package is opened. A first polyacrylonitrile packaging film has a surface thereof treated with a corona discharge. An adhesive is applied to either the treated film or an opposing second packaging film and the first and second films are brought into contact. The corona discharge treatment of the polyacrylonitrile film reduces the bond strength between the adhesive and the treated film such that the adhesive peels cleanly and uniformly away from the seal area of the treated film, without "stringing".

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