High tear films from hafnocene catalyzed polyethylenes

Provided with a physics and mechanical properties improved balance polyethylene film and preparation the film method. On one surface; the thin film with is higher than the 25,000psi 1% secant components, is higher than 500g/mil anti-falls dart shocking, is higher than the 500g/mil MD edge force. The method includes the unit and comonomer for letting the polytetrafluoroethylene anion, wherein the hafnium fund is a luxuriant existence the 70-90℃ temperature, the 120-260psia polytetrafluoroethylene differential pressure and 0.01-0.02 comonomers and polytetrafluoroethylene ratios roughness of the reaction, forms polytetrafluoroethylene polymer. The method further - comprising a forming is higher than the 25,000psi 1% secant components, sufficiently is higher than 500g/mil anti-falls dart shocking, is higher than the 500g/mil MD edge strength's the condition of polyethylene film extrusion polytetrafluoroethylene polymer.