. . . "For this example, the film used was a cast coextruded ???AB??? film having a base layer which contained by weight 27% Dowlex 2035 (0.919 g/cc density, melt index at 190??? C. of 6 g/10 min), 23% Affinity PT 1409 (0.911 g/cc, melt index at 190??? C. of 6 g/10 min), both available from Dow Chemical Co., 58% Supercoat???, a ground, stearic acid coated CaCO3, available from English China Clay, and, fo" . .