A method for manufacturing a thermoplastic resin composition, comprising a melt-compounding step where a thermoplastic resin and a bundle of fibrous fillers are fed into a twin-screw extruder with a pair of screws. wherein the melt-compounding step is performed in the compounding zone of the twin-screw extruder, and the pair of screws in the compounding zone each comprise two or more counter-rotating screw elements and two or more co-rotating screw elements, each screw element having a screw flight section formed with at least one groove, wherein the counter-rotating and co-rotating screw elements are alternately arranged in an axial direction along the screw in an adjacent state.
Country Code: JP
Application Number: CN202280067050.4;TW111137822
