Increasing the reactivity of a surface by removing or chemically converting inactive substance on the surface. Examples are the removal of metal surface oxides or the formation of polar groups on polyolefines. In many cases, an activation if the necessary precondition for a subsequent coating process to ensure sufficient wetting or adhesion of the coat. The most versatile method is plasma activation. In addition, methods such as flame treatment, corona, or chemical activation baths are available.

See a video of how plasma activation works:

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