There are physical and chemical properties of powder materials that can affect the TE. If a powder seems to perform below the level of the other powders run on the same line, the powder supplier should be consulted to see if it can be altered so that it will charge more efficiently. Powder particle size can also affect electrostatic powder application. Powder coatings are made up of an assortment of small particles measured in microns. The size of the particles can have a major influence on powder charging, powder delivery and the appearance of the finished coating. Powder grind size may be adjusted as one of the variables used to influence film thickness or to deal with specific applications situations. When powder is reclaimed for reuse the particle size distribution is altered. The operator must understand this and know what effect it has on the application process. In general, smaller particles are the film, especially in Faraday areas. As the concentration of fines (
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