Glossary of surface technology

Cross-cut test

To check the bonding of paint coats , a cross-cut test is performed. After coating, the paint coat on the plastic part is cut in a lattice shape. Then, a standardized adhesive tape is stuck to the cut lattice, pressed on, and abruptly pulled off again. If paint particles are visible on the tape, the adhesion of the coating is insufficient. The cross cut thus shows the bond strength of paint coats on plastic parts.

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