Method of coating an underbody of a vehicle

摘要

A method of coating some or all of an underbody of a vehicle on a production line, comprises applying a polymeric coating powder to the underbody, and sintering the powder to the underbody. The polymeric coating includes a mixture comprising a polyolefin having a polar functionality, and at least one ethylene a -olefin copolymers. The mixture has a melt flow index greater than 15g/10 minutes (2.16kg, 190{C), preferably greater than 20g/10 minutes. The ethylene a -olefin copolymer should be at least 50% ethylene. The a -olefin co-monomer may be propylene, butene, hexene, or octene. The polyolefin having a polar functionality may be a co-polymer of ethylene with at least one polar monomer. The method may include an electrostatic powder coating process, wherein the powder coating is charged and then sprayed onto the surface of the underbody of a vehicle.