Thermoplastic coated films with anti-static properties

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428922, 428409, 4284111, 428518, 426415, 260DIG15, 260DIG21, B32B 2700

Patent

active

044381760

ABSTRACT:
The present invention relates to thermoplastic films such as polypropylene and more particularly to bi-axially oriented polypropylene which are characterized by having excellent anti-static properties and good resistance to the transmission of oxygen and moisture vapor. These properties are achieved by the application of a thin primer layer containing poly (ethylenimine) to corona discharge treated oriented polypropylene film followed by the application of an aqueous dispersion of a vinylidene chloride multipolymer containing a water soluble polyol such as a low molecular weight glycol or a poly (ethylene oxide) adduct of a nonpolar molecule.

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patent: 3926551 (1975-12-01), Okada et al.
patent: 4048428 (1977-09-01), Baird
patent: 4115334 (1978-09-01), Gerow

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