Patent ID: 6924013

Claim:
A coextrusion binder comprising: 5 to 30 parts of a polymer (A) comprising a blend of a polyethylene (A1) of relative density between 0.910 and 0.940 and of a polymer (A2) selected from the group consisting of elastomers, very low-density polyethylenes having a relative density of 0.860 to 0.880 and metallocene polyethylenes, wherein both (A1) and (A2) are grafted with an unsaturated carboxylic acid; 95 to 70 parts of an ungrafted polyethylene (B) of relative density between 0.910 and 0.930; the blend of (A) and (B) having: a relative density of between 0.910 and 0.930, a content of grafted unsaturated carboxylic acid between 30 and 10,000 ppm, and an MFI (ASTM D 1238; 190° C./2.16 kg) between 0.1 and 3 g/10 min., MFI standing for the melt flow index.