subject: powder coating [print this page] An article, comprising a coated substrate obtained by coating an uncoated substrate with a single layer of a combination of two or more powder coating, comprising two or more color powder coatings wherein the color of each power coating is different, wherein a difference in triboelectric charge of said two or more powder coating is 5.0 C/g or less; wherein particles of each powder coating are not agglomerated; and wherein said two or more powder coatings form a single layered coating film having a homogeneous hue.
However, even if these colored powders were very fine, having a particle size of 10 m or less, it is actually not easy to form a coating film of visually homogeneous hue depending upon the combination of two or more colored powders. Moreover, those powder coatings need a granulation process or a composite-forming process, thereby making it difficult to prepare powder coating of desired hue in a simple process.powder coating
