| 摘要 |
<p>A subject matter of the invention is a coextrusion tie, which comprises: 5 to 35% by weight of a polymer (A) itself composed of a blend of 80 to 20% by weight of a metallocene polyethylene (A1) with a density of between 0.863 and 0.915 and of 20 to 80% by weight of a non-metallocene LLDPE polyethylene (A2) with a density of between 0.900 and 0.950, the blend of polymers (A1) and (A2) being cografted; 95 to 65% by weight of metallocene polyethylene (B) homo- or copolymer, the comonomer of which comprises 3 to 20 carbon atoms, preferably 4 to 8 carbon atoms, the density of which is between 0.863 and 0.915 and the MFI of which is between 0.5 and 30, preferably between 3 and 15, g/10 min; the total forming 100%, the blend of (A) and (B) being such that its MFI is between 0.1 and 15, preferably between 1 and 13, g/10 min.</p> |
