| 摘要 |
A laminated film comprises at least an aluminum layer and, superimposed on one side thereof by extrusion lamination, a linear low-density polyethylene layer, this linear low-density polyethylene layer prepared with the use of a metallocene olefin polymerization catalyst and having a density of 0.895 to 0.930 g/cm3 and an MFR (190.degree.C) of 0.1 to 100 g/10 min, wherein the linear low-density polyethylene layer at its surface exhibits an oxygen concentration of linear low-density polyethylene per se ranging from 1.0 to 1.4 atomic %. The laminated film which has an excellent balance of aluminum bond strength and heat sealing properties of linear low-density polyethylene layers and it can be provided at low cost. Further, a laminated film comprising at least the linear low-density polyethylene layer, the aluminum layer and a substrate layer arranged in this order can be provided at low cost by adding a layer or layers to the laminated film obtained by the extrusion lamination. This laminated film is suitable to, for example, a packaging material for dry food.
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