| 摘要 |
<p>A multilayer thermoshrinkable film and a process for manufacturing the same are described. The film is particularly suitable for packaging applications, in particular as a packaging thermoshrinkable hood for enclosing an item or a secondary packaging essentially consisting of polyethylene. The multilayer thermoshrinkable film of the invention comprises: a) at least one first film layer comprising a linear ethylene copolymer having a density of 0.920 to 0.950 g/cm; b) at least one second film layer comprising a first copolymer of propylene with ethylene and/or at least one CH2-CHR1 alpha-olefins, where R1 is a hydrocarbon radical having 2-10 carbon atoms; and c) at least one third film layer comprising a linear ethylene copolymer having a density of 0.920 to 0.950 g/cm; wherein said at least one first film layer is arranged between said at least one second film layer and at least one third film layer. The multilayer thermoshrinkable film, which has improved shrinkage and seal properties, may be advantageously produced by means of standard symmetrical film extrusion plants.</p> |
