POWDER COATING MATERIAL AND COATING METHOD USING THE SAME

摘要

PURPOSE: To obtain a powder coating material which enables thin coating and can be applied with a spray gun of a tribocharge type with a sufficient transfer efficiency by incorporating a specific oil into a powder coating material at least comprising a binder resin and a curative and having a specified particle size. CONSTITUTION: A silicone oil having N atoms in its structural units (e.g. an aminomodified silicone oil) is incorporated into a powder coating material at least comprising a binder resin (e.g. a polyester resin) and a curative (e.g. a blocked isocyanate) and having an average particle size of 5-20μm, pref. by causing the oil to exist on the surface of the material. Pref. the amt. of the oil contained in the material is 0.01-1.00wt.%. The material is positively charged by friction with a fluorine-contg. member (e.g. polytetrafluoroethylene) formed in a coating-material delivery section inside a spray gun and then sprayed to an object to be coated.