Abstract: Multilayer heat-shrinkable films in which the skin layers A consist of a polyolefin selected from: A1) a composition containing 25-45% b.w. of a random copolymer of propylene with ethylene and 55-75% b.w. of a random terpolymer of propylene, ethylene and one or more C4-C10 alpha-olefins; and A2) random copolymer(s) of propylene and one or more C4-C10 alpha-olefins. Core layer B comprises a heterophasic composition comprising: a) 20-60% b.w. of a propylene homopolymer with an isotacticity index higher than 80 or of a propylene crystalline copolymer with ethylene and/or C4-C10 alpha-olefins containing at least 85% b.w. of propylene units and having an isotacticity index of at least 80 or of mixtures thereof and b) 40-80% b.w. of an ethylene copolymer with propylene and/or 1-butene and possibly a diene, containing 20-60% b.w. of ethylene units and completely soluble in xylene at 25° C.

Abstract: Multilayer heat-shrinkable films in which the skin layers A consist of a polyolefin selected from: A1) a composition containing 25-45% b.w. of a random copolymer of propylene with ethylene having 2-5% b.w. of ethylene units and 55-75% b.w. of a random terpolymer of propylene ethylene and one or more C4-C10 alphaolefins, having 2-5% b.w. of ethylenenunits and 6-12% b.w. of alphaolefin units; and A2) random copolymer(s) of propylene and one or more C4-C10 alphaolefins containing 4-14% b.w. of alphaolefin units. Core layer B comprises a hoerophasic composition comprising: a) 20-60% b.w. of a propylene homopolymr with an isotacticity index higher than 80 or of a propylene crystalline copolymer with ethylene and/or C4-C10 alphaolefins containing at least 85% b.w. of propylene units and having an isotacticity index of at least 80 or of mixtures thereof and b) 40-80% b.w. of an ethylene copolymer with propylene and/or C4-C10 alphaolefins and possibly a diene, containing 20-60 % b.w.