UV surface cleaning and UV surface activation

Treatment with intensive UV light can prepare surfaces in such a way that e.g. coating processes are made much more efficient.

  • You need to remove organic contamination from surfaces?
  • You wish to activate the surfaces of plastics?

UV technology can do this. See how it works!

How does UV activation and cleaning of surfaces work?

Activating and cleaning surfaces with UV light

High-energy UV photons are able to break up molecular organic bonds at and on surfaces.
The opened bonding sites strive to return to a chemically stable condition as quickly as possible.
Reaction partners may be atmospheric oxygen or ozone formed from ambient oxygen due to the UV radiation. The open bonds are saturated by the atoms and radicals formed from them and new compounds are created on the surface.

As a consequence of the UV treatment in normal ambient atmosphere, the formation of hydroxyl, carbonyl and/or carboxyl groups can be proven by means of ATR and XPS measurements. This gives the surfaces a higher polar character which has an effect on both the contact angle and the surface energy.

Applications areas

  • Activation and cleaning of surfaces of an organic nature, such as plastic
  • Surfaces, required to be cleaned from absorbed organic contamination, such as metal or glass

VUV surface cleaning wafers

VUV surface activation

Products for surface activation and cleaning

To preliminarily treat surfaces with UV, specialty light sources are used which can generate high radiation contents in the low-wave spectral range below 200 nm.

  • UV mercury lamps with emission wavelengths of 185 nm and 254 nm
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