Patent ID: 7867588

Claim:
A melt-blended polyethylene composition comprising: a first high density polyethylene resin having a melt flow index of about 0.01 to about 0.2 and a density of about 0.941 to about 0.958 g/cm 3 ; a second high density polyethylene resin having a melt flow index of about 0.1 to about 1.5 and a density of about 0.957 to about 0.970 g/cm 3 ; and a third polyethylene resin selected from the group consisting of linear low density polyethylene resins, linear medium density polyethylene resins, and mixtures thereof, said resins being present in the melt-blended polyethylene composition in amounts relative to one another such that the composition has a density of about 0.945 to about 0.960 g/cm 3 , a melt flow index of about 0.1 to about 0.4, and a stress crack resistance of at least 24 hours.