| abstract |
This invention relates to an improved biaxially oriented heat shrinkable multilayer film, a hermetically sealed and evacuated trayed food package wherein the film is used as a stretched heat shrunk overwrap and a method for sealing and wrapping such packages. n Said film comprises at least a first outer layer, n a second outer layer and a core layer between said first and second outer layers, said first and second outer layers each comprising a two component polyethylene blend of between about 25 and about 75 wt.% very low density polyethylene ("VLDPE") of density between about 0.900 and about 0.914 g/cm³, and between about 25 and about 75 wt.% linear low density polyethylene ("LLDPE") of melt index below about 3.5 g/10 minutes and density between about 0.917 and about 0.925 g/cm³, said LLDPE comprising less than about 35 wt.% of the total film weight; and said core layer comprising a three component blend of between about 40 and about 75 wt.% first VLDPE of density between about 0.905 and about 0.914 g/cm³, between about 10 and about 35 wt.% second VLDPE of density between about 0.900 and about 0.905 g/cm³, and between about 15 and about 35 wt.% ethylene α-olefin plastomer copolymer of density below about 0.900 g/cm³. |