Patent ID: 8048532

Claim:
A multi-layer, metallized polymeric film comprising: a) at least one polymeric skin layer comprising an ethylene-propylene-butylene terpolymer, wherein the ethylene-propylene-butylene terpolymer has an ethylene content of from about 0.5 wt % to about 2.0 wt % and a butylene content of from about 4.0 wt % to about 8.0 wt %, an outermost surface of said polymeric skin layer having been subjected to plasma treatment conditions sufficient to impart to the treated surface of said polymeric skin layer a labile oxygen ratio on said treated surface of no more than about 20%; and b) a metal layer deposited onto at least one surface of said polymeric skin layer, said metal layer having an optical density of at least about 2.0; said metallized polymeric film exhibiting a metal adhesion bond strength of at least about 100 g/25 mm.