Tribomatic static charging is the second most common method
of spraying powder coatings. In this
method the powder develops a positive charge when passing through the spray gun
walls. The positively charged powder
particle is then transported to the grounded product by the air stream leaving
the gun. Tribomatic charging is
efficient in developing a static charge within the powder, however, coatings
must be specifically formulated for this system.
Advantages:
- No high voltage source required
- Better coverage in recessed areas
- Slightly lower capital costs
Disadvantages:
- Level of charge varies with powder chemistry and formula
- Slower rate of application
- Transfer efficiency is lower than corona charging system
- Requires more guns
- Wears out parts faster
For more information on powder coating methods, please see
or download our powder
coating technical guide on our website.
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