Patent ID: 7250474

Claim:
A process for the preparation of a polyethylene resin composition having a narrow molecular weight distribution comprising: a. providing a first metallocene-produced linear low density polyethylene (mLLDPE) resin having a density within the range of 0.92 to 0.94 g/cm 3 and a melt index MI2 within the range of 0.05 to 2 g/10 min.; b. providing a second high density polyethylene (HDPE) resin prepared either with a Ziegler-Natta catalyst or with a metallocene catalyst and having a density within the range of 0.95 to 0.97 g/cm 3 and a melt index MI2 within the range of 0.1 to 10 g/10 min.; and c. blending together said first and second polyethylenes to form a polyethylene resin composition having a narrow molecular weight distribution, a density within the range of 0.93 to 0.955 g/cm 3 and a melt index MI2 within the range of 0.5 to 8 g/10 min.