A polyethylene film having a balance of improved physical and mechanical
properties and a method for making the same are provided. In one aspect,
the film includes a 1% secant modulus of greater than 25,000 psi, a dart
impact resistance of greater than 500 g/mil, and a MD tear strength of
greater than 500 g/mil. In one aspect, the method comprises reacting
ethylene derived units and a comonomer in the presence of a hafnium-based
metallocene at a temperature of from 70.degree. C. and 90.degree. C., an
ethylene partial pressure of from 120 psia and 260 psia, and a comonomer
to ethylene ratio of from 0.01 to 0.02 to produce an ethylene based
polymer. The method further comprises extruding the ethylene based
polymer at conditions sufficient to produce a polyethylene film
comprising a secant modulus of greater than 25,000 psi, a dart impact
resistance of greater than 500 g/mil, and a MD tear strength of greater
than 500 g/mil.