Nowadays, in the powder coating market, the coating powder is generally made by thermosetting resin and that made by thermoplastics resin is the minor due to high manufacturing cost.Besides, the coating powder made by polyethylene terephthalate resin (PET) is only for thick film coating in the market because of larger powder particles, which is done by fluidized bed. Because the coating powder made by PET resin for thin coating is not developed due to its difficulty of fine pulverizing.The thin film coating enables to decrease the demand of coating powder for coating area than present thick film coating, which brings the lower coating cost.Additionally, the powder coating does not require the solvent, such as toluene, xylene, thinner and be free from volatile organic compounds (VOC) accordingly. This contributes the decrease of VOC to the atmosphere.This paper provides the summary of the development of coating powder for electrostatic coating (thin film coating) made by recycling PET resin.This development has been done by “The subsidies of Ministry of the Environment” of “The technical research of waste treatment for next-generation in 2004”
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