The rheological property of metallocene polyethylene MPE(ethylene and 1\|butene copolymer) and conventional LDPE has been studied in detail by using a Rheometrics Scientifics DSR\|200 rheometer with parallel plate geometry. Measurements include steady\|state viscosity, dynamic viscoelasticity, followed by linear fitted with the modified cross model.MPE has poor processability due to its narrow MWD. Compared with conventional LDPE,MPE has higher apparent viscosity in middle shear rate range,low sensitivity t...