▎ 摘　　要

NOVELTY - Manufacture of coated plastic portion involves forming composite of thermoplastic polymer (52) and graphene or nanographene (50), processing composite in extruder (54), forming masterbatch pellets or powder (56), processing masterbatch pellets or powder (56) with standard polymer or copolymer pellets to mold a plastic portion (60), and applying a coating directly onto the plastic portion (60) by electrostatic coating process. The ratio of polymer and nanographene is chosen in such a way that the composite has electroconductivity. USE - Manufacture of coated plastic portion e.g. bumper, spoiler, housing and cover for vehicle (all claimed). ADVANTAGE - The coated plastic portion is manufactured efficiently and economically with excellent surface quality and productivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for coated plastic portion.