| abstract |
A thermoplastic film (100) having a substantially continuous adherent coating (110) on at least one surface, wherein the coating includes a polymeric binder and an additive comprising nano-scale particles (112). When the coating is formed on the surface of the film, the nano-scale particles (112) form a barrier that substantially reduces the diffusion of moisture and oxygen. In preferred embodiments, the coating includes a polymeric binder and silicate particles formed on a base substrate layer (120) that includes a polyolefin selected from the group consisting of homopolymers, copolymers and terpolymers of propylene, ethylene and butene and blends thereof. |