A metallocene-catalysed multimodal polyethylene copolymer of ethylene with at least two different comonomers selected from alpha-olefins having from 4 to 10 carbon atoms, which consists of (i) 30.0 to 70.0 wt% of an ethylene polymer component with a comonomer selected from alpha-olefins having from 4 to 10 carbon atoms, and (ii) 70.0 to 30.0 wt% of an ethylene polymer component with a comonomer selected from alpha-olefins having from 4 to 10 carbon atoms, wherein the alpha-olefin comonomer having from 4 to 10 carbon atoms of ethylene polymer component is different from the alpha-olefin comonomer having from 4 to 10 carbon atoms of ethylene polymer component, whereby the ethylene polymer component has a density in the range of from 920 to 950 kg/m 3 and an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 1.0 to 20.0 g/10 min; and the ethylene polymer component has a density in the range of from 890 to 915 kg/m 3 and an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 0.01 to 1.5 g/10 min; and whereby the multimodal polyethylene copolymer has a) a density in the range of from 910 to 940 kg/m 3, b) an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 0.1 to 10.0 g/10 min, c) a ratio of the MFR 21, determined at 190°C, 21.6 kg, according to ISO 1133, to MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, MFR 21 /MFR 2, in the range of from greater than 20 to 50, d) a rheological polydispersity index defined as 10 5 /Gc with Gc being the crossover modulus from dynamic rheology according to ISO 6271-10 at 190°C in the range of greater than 0.57 to 2.0 Pa -1 and e) a shear thinning index SHI 0/50 measured as described in the experimental part in the range of greater than 1.80 to 10.0. (i) 30.0 to 70.0 wt% of an ethylene polymer component with a comonomer selected from alpha-olefins having from 4 to 10 carbon atoms, and (ii) 70.0 to 30.0 wt% of an ethylene polymer component with a comonomer selected from alpha-olefins having from 4 to 10 carbon atoms, wherein the alpha-olefin comonomer having from 4 to 10 carbon atoms of ethylene polymer component is different from the alpha-olefin comonomer having from 4 to 10 carbon atoms of ethylene polymer component, whereby the ethylene polymer component has a density in the range of from 920 to 950 kg/m 3 and an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 1.0 to 20.0 g/10 min; and the ethylene polymer component has a density in the range of from 890 to 915 kg/m 3 and an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 0.01 to 1.5 g/10 min; and whereby the multimodal polyethylene copolymer has a) a density in the range of from 910 to 940 kg/m 3, b) an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 0.1 to 10.0 g/10 min, c) a ratio of the MFR 21, determined at 190°C, 21.6 kg, according to ISO 1133, to MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, MFR 21 /MFR 2, in the range of from greater than 20 to 50, d) a rheological polydispersity index defined as 10 5 /Gc with Gc being the crossover modulus from dynamic rheology according to ISO 6271-10 at 190°C in the range of greater than 0.57 to 2.0 Pa -1 and e) a shear thinning index SHI 0/50 measured as described in the experimental part in the range of greater than 1.80 to 10.0. a) a density in the range of from 910 to 940 kg/m 3, b) an MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, in the range of from 0.1 to 10.0 g/10 min, c) a ratio of the MFR 21, determined at 190°C, 21.6 kg, according to ISO 1133, to MFR 2, determined at 190°C, 2.16 kg, according to ISO 1133, MFR 21 /MFR 2, in the range of from greater than 20 to 50, d) a rheological polydispersity index defined as 10 5 /Gc with Gc being the crossover modulus from dynamic rheology according to ISO 6271-10 at 190°C in the range of greater than 0.57 to 2.0 Pa -1 and e) a shear thinning index SHI 0/50 measured as described in the experimental part in the range of greater than 1.80 to 10.0.