The ISO 16862:2003 "Assessment of paints and varnish sag resistance" standard provides a method for evaluating the sag resistance performance of paints, varnish and other coatings when applied in a vertical position. The standard describes how the maximum wet film thickness of coatings can be determined by two methods: one is a small-scale test on a horizontal test plate using a sagging refractor, and the other is a test that is actually applied to a vertical substrate. Sag resistance refers to the ability of coatings to be placed vertically without flow or sagging, which is essential to ensure the effect of coatings in practical applications. The standard applies to Liquid Coatings and specifies test conditions and evaluation methods relevant to coating applications.
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