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What are Holidays in Coating? Holidays in coating are, when coating any steel substrate there are some missing areas left un-intentionally or inadequately coated or there are some inclusions that are found when testing with the holiday detector such as, discontinuities, pinholes and holidays. These are coating terms or coating defects. Pinholes or holidays are so … Read more
Why Polyurethane Top Coat Flaking – Peeling off? Polyurethane – Top Coat Flaking what could be the reason? There can be several reasons for flaking or peeling off, but the main reason would be preparation prior to topcoat application. Reasons like, due to weather conditions such as high humidity, extreme heat windy dusty conditions. … Read more
What is Airless Spraying? Airless Paint Spraying – Technical aspects used for successful paint application of material using airless equipment for protective coatings and linings are explained here in this article. In this article, I will go through some of the main principles that are necessary for successful spray applications. Spray Application Techniques A few … Read more
What is Dolly Test? Paint Testing Dolly Test or paint test or coating test is carried out to evaluate the bonding strength with base metal or in other words to achieve the highest possible pull-off values from a pull of adhesion test. Dolly Test is carried out by adhering or by glueing the test dollies … Read more
20 Different Paint Defects – Painting defects are several types and occur during application or after the paint application. To maintain good quality and prevent defects, the applicators should be trained and an awareness of the quality requirements should be explained such as the preventions measures of defects. Another main reason for almost all the … Read more