BOPP multilayer film

A biaxially oriented polypropylene multilayer film having at least three layers wherein each layer comprises a nucleated propylene polymer composition comprising:

• A) from 77 wt % to 91 wt %, of a propylene homopolymer having a fraction insoluble in xylene at 25° C. higher than 95%, based upon the total weight of the propylene homopolymer;
• B) from 9 wt % to 23 wt %, of a copolymer of propylene having from 28.0 wt % to 42.0 wt % of ethylene derived units, based upon the total weight of the propylene copolymer;
• and
• C) from 300 ppm to 5000 ppm with respect to the nucleated propylene polymer composition, of a nucleating agent selected from the group consisting of aromatic or aliphatic carboxylic acids, aromatic metal phosphates, sorbitol derivatives and talc,
• wherein the nucleated propylene polymer composition has (i) an intrinsic viscosity of the fraction soluble in xylene at 25° C. between 1.0 dl/g and 1.9 dl/g, (ii) a fraction soluble in xylene at 25° C. between 9.0 wt % and 21.0 wt %, based upon the total weight of the nucleated propylene polymer composition, (iii) a total melt flow rate (Melt Flow Rate according to ISO 1133, condition L, that is, 230° C. and 2.16 kg load) between 1.5 and 5 g/10 min, and (iv) a value of the relation (I):
• 22.5+0.2*MFR−1.2*Xs+0.2*IV (I)
• higher than 5.9;
• wherein
• MFR is the melt flow rate of the nucleated propylene polymer composition (Melt Flow Rate according to ISO 1133, condition L, that is, 230° C. and 2.16 kg load);
• IV is the intrinsic viscosity of the fraction soluble in xylene at 25° C.;
• and
• Xs is the fraction soluble in xylene at 25° C.;
• and
• wherein the amount of A+B is equal to 100 wt %.