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

B - Operations, Transporting

65

D

B65D 77/30 (2006.01) B65B 51/00 (2006.01) B65B 51/22 (2006.01) B65D 75/58 (2006.01)

Patent

CA 2062290

Abstract of the Disclosure PEELABLE ADHESIVE-BASED PACKAGE SEAL AND METHOD OF MAKING SAME 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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