Coating Terms

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Test applied to determine the water resistance of organic coatings. For cataplasm test, water-absorbed cotton is covered by a thin polymer film to avoid evaporation. Later on, mentioned piece of cotton is left on the coating film for a certain time period (e.g, 8 hours) at a certain temperature (50°C, 60°C, 70°C, 80°C, ...) and effects of water is observed (softening, lifting, color change etc.).