PE MOLDING COMPOSITION FOR BLOW-MOLDING OF SMALL LOW-DENSITY BLOW MOLDINGS

摘要

The invention relates to a polyethylene molding composition with polymodal molar mass distribution which is particularly suitable for blow molding of small blow moldings whose capacity is in the range from 250 to 5000 ml. The density of the molding composition at a temperature of 23°C is in the range from 0.948 to 0.952 g/cm3, and its MFI190/5 is in the range from 0.8 to 1.3 g/10 min. It comprises from 45 to 50% by weight of a low-molecular-weight ethylene homopolymer A, from 30 to 35% by weight of a high-molecular-weight copolymer B composed of ethylene and of another olefin having from 4 to 8 carbon atoms, and from 18 to 23% by weight of an ultrahigh-molecular-weight ethylene copolymer C.