How It Works-Tribo Charging Method

The charging of the powder particles in a tribo gun is achieved by the friction of two dissimilar materials coming in contact with one another. (See diagram #2.) In the case of most tribo guns,electrons are stripped from the powder particles as they make contact with the gun wall or tube which is typically made of teflon. This results in the particle giving up electrons which leaves it with a net positive charge. The positively charged powder particle is transported to the grounded product by the air stream leaving the gun. The powder particles accumulate on the grounded product and are attached long enough for the product to pass through a cure oven where it flows into a continuous coating. The electrons that were removed from the powder particles are discharged to ground through the teflon material. This discharge of electrons to ground must happen quickly and continuously for tribo guns to operate effectively.
many other powders including polyesters, urethanes, and hybrids that can successfully be used with tribo.
As in corona guns, tribo has a wide variety of nozzles. Many of the same style nozzles are used for both corona and tribo. One style nozzle used with tribo guns is the multi-head nozzle. This nozzle allows a great deal of flexibility in directing powder into comers and difficult areas. Also, tribo guns do not have electrodes in the powder stream as corona guns do. This provides an advantage in gun cleaning and wear.
[Thanks for Michael J.Thies,please contact us if any doubt]
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