Patent ID: 7514504

Claim:
A process for preparing a polyethylene resin composition having a multimodal molecular weight distribution that comprises the steps of: (a) providing from 10 to 90 weight percent of a first metallocene-produced linear low density polyethylene (mLLDPE) resin having a density of from 0.920 to 0.940 g/cm 3 and a melt index MI2 of from 0.1 to 10 dg/min; (b) providing from 90 to 10 weight percent of a second bi- or multi-modal polyethylene resin prepared either with a Ziegler-Natta or with a metallocene catalyst system, said polyethylene having a density ranging from 0.940 to 0.970 g/cm 3 and a melt index MI2 of from 0.05 to 10 dg/min; (c) physically blending together the first and second polyethylenes to form a polyethylene resin having a multimodal molecular weight distribution, a density ranging from 0.935 to 0.960 g/cm 3 and a MI2 of from 0.2 to 0.9 dg/min.