| 摘要 |
<p>The invention concerns a multilayer composite film for packaging food comprising a PP layer sandwiched between two outer PE layers. Said film thickness ranges between 30 νm and 120 νm, the outer layers being made of LLDPE whereof the density d is 0.919 < d < 0.930 g/cm3 and the median layer being made of a mixture comprising 50-70 % of PP whereof the density d is 0.895 < d < 0.905 g/m3, whereof the melt index ranges between 0.75 and 0.85 g/10 minutes, 10-30 % of said LLDPE and 10-30 % of a thermoplastic polyolefin whereof the density d is 0.885 < d < 0.905 g/m3 and whereof the melt index is between 0.55 and 0.65 g/10 minutes.</p> |
