The international standard ISO 4622-1992 Paints and varnishes stacking pressure test specifies a test method to determine whether coatings or varnishes are sufficiently drying after a specific drying period to resist damage when two coating surfaces or one coating surface comes into contact with another surface under pressure. This test is essential for assessing the stability of coatings during storage and transportation, ensuring that coatings do not break down under stacking pressure. The standard provides detailed test conditions and operating procedures to ensure the accuracy and conformity of test results.