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AssigneeNOVA Chemicals (International) S.A.
InventorsNitin Borse, Norman Dorien Joseph Aubee, P. Scott Chisholm, Shivendra Kumar Goyal, Jamie Michael Marler
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A multilayer film is prepared from a high impact strength polyethylene (HI polyethylene); a Ziegler Natta catalyzed polyethylene (Z/N polyethylene) and a high pressure low density polyethylene (LD polyethylene) with i) at least one skin layer consists essentially of HI polyethylene and ii) at least one core layer comprises a blend of Z/N polyethylene and said LD polyethylene. The HI polyethylene has a density of from 0.915 to about 0.930 g/cc and a normalized impact strength of at least about 300 g/mil. The amount of HI polyethylene is from about 30 to about 55 weight % (based on the combined weights of the HI+Z/N+LD polyethylenes). The films described herein are readily prepared on blown film equipment and provide an excellent balance of mechanical properties.
A multilayer film comprising HI polyethylene having a density of from 0.915 to 0.930 g/cc and an SCBDI of from 70 to 100;
A multilayer film from about 1 to about 6 mils in total thickness, comprising HI polyethylene;
A polyethylene package comprising a multilayer film comprising HI polyethylene;
Dependencies are inferred from the claim text.