Grid Adhesion Test
When measuring the adhesion by the grid method, the paint film is cut according to the grid pattern, and just penetrates to the substrate, and then evaluates the adhesion of the paint film according to the integrity of the paint film in the grid pattern (such as separation, peeling, peeling, etc.). It is divided into seven grades of 0, 1, 2, 3, 4, 5, 10, and 15 mm, and 1 mm is better.
Circular adhesion test
When measured with an adhesion Tester, the rotary needle draws a series of circular roller lines on the paint film, and then evaluates the complete Chengdu of the paint film within the scratch range of the circular roller line, which is divided into 7 grades, and 1 grade is better.
