| 摘要 |
<p>The disclosure relates to a multi-layered, high modulus, bi-axially oriented thermoplastic film, heat-shrinkable or non heat-shrinkable, comprising a first outer layer comprising a polyester or a copolyester, a second outer layer comprising an ethylene or propylene homo- or co-polymer, a core layer comprising an ethylene-vinyl alcohol copolymer, and no core polyamide or polyester layers, wherein the film has a modulus (evaluated according to ASTM D882) higher than 6,000 kg/cm2 in at least one direction. The film is prepared by orienting biaxially a flat extruded tape by means of a tenter frame, preferably simultaneously. The film is particularly useful, in the non heat-shrinkable version, for food and non food packaging applications.</p> |
