JinKeLian QNF paint film tack back tester measures the tack back of the mucous membrane. The preheated weight filter paper is placed on the paint film, and after drying under the specified time and temperature and humidity conditions, the weight and filter paper are removed. , Observe the area evaluation of the bonded filter paper fiber with a 4 times magnifying glass. Executive standard: GB1762-89.
Put a certain filter paper on the surface of the paint film to be tested, and place the QNF paint film back tack tester gently on the surface of the filter paper. → After 30 seconds, remove the dry tester and turn the sample over. → Gently tap a few times with your fingers, if the filter paper can fall freely and the filter paper fibers are not stuck on the surface of the film, it is considered that the paint film is completely dry.