SHRINK FILM FROM SINGLE SITE CATALYZED POLYETHYLENE

摘要

Shrink film having a desirable balance of properties is manufactured from a polyethylene blend composition having a fractional melt index and a molecular weight distribution of from 2.5 to 7. The blend composition comprises a first blend component that is made with a single site catalyst and has a molecular weight of greater than 140,000 and a first density, d1. The blend composition also contains a second blend component having a lower molecular weight and a second density, d2, that is greater than the density of d1 in an amount of from 0.018 to 0.032 g/cc. The films of this invention may be used, for example, as an overwrap or pallet wrap to protect goods during shipping and in food packaging applications (such as shrink wrap for frozen poultry).