Powder coating continues to gain in popularity as a versatile
coating with many uses. Among its advantages are environmental
friendliness, ease of color change and low material waste when
powder is reclaimed and reused.
Powder Line with Conveyor System
Finely ground powder paint can be applied by a number of different
methods. Most often, it is sprayed from manual or automatic
guns onto parts that have been electrostatically grounded. The
powder particles themselves are given a charge that allows them
to be attracted to the parts. This electrostatic method greatly
decreases overspray and waste.
One specialty application is the fluidized bed method, where
parts are heated and then dipped into an aerated tank filled
with powder. The hot parts retain a heavy coating which is then
oven cured.
Electrostatic powder systems require pretreatment equipment
to clean, protect and thoroughly rinse the parts prior to powder
application. Two ovens are required: one to dry the parts prior
to application and another to melt and cure the powder coated
product. Coating is done with manual or automatic guns in a
special booth with the ability to reclaim and reuse excess powder.
The booth itself is often located inside an environmental room,
which controls temperature and humidity for best results. High
capacity powder coating systems link all these processes together
by conveyor
