MULTIMODAL POLYETHYLENE SCREW CAP

The present invention relates to a multimodal polyethylene composition obtainable by a process according to any one of claims 4 to 7, comprising; (A) 35 to 65 parts by weight, preferably 45 to 65 parts by weight, most preferred 50 to 60 parts by weight, of the low molecular weight polyethylene; (B) 5 to 40 parts by weight, preferably 5 to 30 parts by weight, most preferred 5 to 20 parts by weight, of the first high molecular weight polyethylene or the first ultra high molecular weight polyethylene; and (C) 20 to 60 parts by weight, preferably 25 to 60 parts by weight, most preferred 35 to 55 parts by weight, of the second high molecular weight polyethylene or the second ultra high molecular weight polyethylene, wherein the molecular weight distribution of the multimodal polyethylene composition is from 9 to 25, preferably 10 to 20, determined by Gel Permeation Chromatography; the isothermal crystallization half-time of the multimodal polyethylene composition at a temperature of 123°C is 6 min or less, preferably 2-6 min, according to Differential Scanning Calorimetry; and a spiral flow length at a temperature of 220 °C is at least 200 mm, preferably 250-400; a multimodal polyethylene composition obtainable this way and a screw cap prepared therefrom.