Multilayer film structure

Claim 1

A printable film structure comprising a polymeric film substrate of a member selected from the group consisting of nylon, polyethylene terephthalate, polycarbonate, polyethylene, polypropylene, coextrudates and laminates of any two or more thereof, at least one surface having a prime coating thereon of the type which causes destructive film blocking between contacting layers of such coated films, said prime coating being a coating of a member selected from the group consisting of (A) the reaction product of acidified aminoethylated vinyl polymer and an epoxy resin (B) poly(ethyleneimine) and (C) mixtures thereof, and said prime coating having thereon an ink base of a linear water-dissipatable polyester having an inherent viscosity of about 0.1 as measured in a 60/40 parts by weight solution of phenol/tetrachloroethane at 25° C., and at a concentration of 0.5 gram of polyester in 100 ml of solvent, the polyester containing substantially equimolar proportions of acid moiety repeating units (100 mole %) to hydroxy moiety repeating units (100 mole %), the polyester comprising repeating units of components (a), (b), (c), and (d), as follows, wherein all stated mole percentages are based on the total of all acid and hydroxy moiety repeating units being equal to 200 mole %: (a) about 90 to about 97 mole % isophthalic acid, (b) about 3 to about 10 mole % 5-sulfoisophthalic acid, (c) about 70 to about 85 mole % 1,4-cyclohexanedimethanol, and (d) about 15 to about 30 mole % diethylene glycol.