Films with excellent
machine direction (MD) tear properties comprise at least one layer made from a
polymer comprising:(A) at least 50 weight percent (wt %) propylene; and(B) at least 5 wt %
ethylene and / or one or more unsaturated comonomers.Representative of component (B) unsatuarated comonomers are the C4-20 α-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i)
haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g / mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the
comonomer content, i.e., the units derived from
ethylene and / or the unsaturated
comonomer(s), of the
copolymer is at least about 3 wt %, (iii) a skewness index, Six, greater than about −1.20, (iv) a DSC curve with a Tme that remains essentially the same and a Tmax that decreases as the amount of
comonomer, i.e., the units derived from
ethylene and / or the unsaturated comonomer(s), in the
copolymer is increased, and (v) an X-
ray diffraction pattern that reports more gamma-form crystals than a comparable
copolymer prepared with a Ziegler-
Natta (Z-N) catalyst.