A homogeneous blend of a low density polyethylene with a metallocene-catalysed polyethylene having a density of from 0.906 g/cm.sup.3 and a Dow Rheology Index of at least 5/MI.sub.2,MI.sub.2 being the melt index measured according to ASTMD-1238 condition 190.degree. C./2.16 kg and the Dow Rheology Index being determined by a dynamic rheological analysis performed at 190.degree..