| 摘要 |
Blown film on the basis of polyethylene with a density below 910 kg/m3 is prepared by extruding the molten polymer having a melt index of at least 2 dg/min at temperatures of the melt at the die gap of at most 160 DEG C., the die gap width being at least 2 mm, blowing the molten polymer to a balloon, cooling, flattening and rolling it up. Films that have been prepared this way have improved mechanical and optical properties and are highly oriented. |
