Pinholes in Paint Film
What is the cause of pinholes in our solvent-based paints, and what steps can we take to eliminate this problem?
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Q. I am a manufacturing engineer for a company that makes aftermarket products for the automobile industry. All the parts are produced, pretreated and painted in our factory. We have been using the same solvent-based paints for some time. Painting is done by using conventional air-atomizing spray guns. Recently we started to get pinholes in the paint films. What is the cause of pinholes in our solvent-based paints, and what steps can we take to eliminate this problem? S.D.
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