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Cross-cut Test (Adhesive Force Test)

Categorys:Company View:50 Date:2019-12-18
Cross-cut Test Method is as follows:

1. Use sharp blade (the angle between blade and the surface is 20°-30°) to cut Ten 1mm*1mm’s                   
 small grids on the tester, each cutting line should be deep through the bottom of the paint;

2. Use brush to clean the fragment on the test area;

3. Use adhesive tape with adhesive force between 350g/cm²-400g/cm², strongly stick to the test area, and then use eraser to scrub the adhesive tape in order to increase the contact area between the test area and the tape;

4. Grip one end of the tape by hand, in 90° quickly tear off the adhesive tape. Apply twice test on the same area.

Interpretation of the Results: Adhesive force ≧4B is qualified.

5B- the edge of the cutting line is smooth, no paint drop off from edge or cross point;

4B- small flakelet of paint drop off from cross point , and total drop off area is less than 5%;

3B- small flakelet of paint drop off from edge and cross point, and total drop off area is between 5%-15%;

2B- flakelets of paint drop off from edge and cross point, and total drop off area is between 15%-35%;

1B- flakelets of paint drop off from edge and cross point, and total drop off area is between 35%-65%;

0B- flakelets of paint drop off from edge and cross point, and total drop off area is more than 65%;
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