A method of manufacturing an article by injection moulding is disclosed, the method comprising injection moulding an article from a polymer resin, wherein the polymer resin comprises different types of recycled polymer and a compatibilizer comprising inorganic particulate material and a surface treatment agent on a surface of the inorganic particulate material, and wherein the polymer resin has a MFI @ 2.16 kg/190° C. of equal to or greater than 3.0 g/10 min. Further disclosed is the use of a compatibilizer in an article or in a polymer resin, a polymer resin suitable for use in the manufacture of an article therefrom by injection moulding, and an article so produced.