Classification of film defects

 In the industrial coating process, coating film defects often occur and coating film defects (or early damage phenomena) occur shortly after coating or in the early stages of use, resulting in repairs and major economic losses. Coating film defects (or paint film defects) refer to defects, differences and incompleteness in the quality of the coating film compared with the specified coating quality standards; Still in storage and transportation, less than half a year) there will be damage to the paint film (such as blistering, loss of light, rust and other paint film defects). As a painting worker, he needs to be familiar with the defects of the coating film and its prevention and treatment methods like a doctor treating a patient. Only by accumulating rich practical experience can he become a good coating technologist. For this reason, the author summarizes the coating defects encountered in the past decades, the experience of prevention and the technical information collected, for the reference of readers' research and self-study.