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Environmental Compliance
Liquid finishing requires the use of solvents. These solvents
require venting, filtering and solvent recovery systems to
control the emission of volatile organic compounds (VOC’s).
But powder coating contains no solvents and therefore emits
negligible, if any, polluting VOC’s into the atmosphere.
Exhaust air from the coating booth can be safely returned
to the coating room, and less oven air is exhausted to the
outside, making the powder coating process a safer and cleaner
finishing alternative.
And since the powder is dry, most powder coating over-spray,
up to 98% of it, an be readily retrieved and reused. The waste
that results is negligible, and can be disposed of easily
and economically.
Energy Savings
The absence of voc’s in the powder coating process means
that air used to exhaust the powder spray booth can be re-circulated
directly into the plant, eliminating the cost of heating or
cooling the make- up air. Heating costs are also lower for
the curing oven. While ovens that cure solvent- based coatings
must heat and exhaust volumes of air to ensure that the solvent
fumes do not reach a potentially explosive level, the exhaust
required in powder coating ovens is lower, resulting in energy
savings.
Efficiency
Greater operating efficiency with a powder system saves both
time and money. No drying or flash- off time is required.
Parts can be racked closer together on a conveyor, and pass
more quickly through a production line, resulting in lower
unit costs. More parts can be coated automatically, as powder
coating does not run; drip or sag, and results in significantly
lower reject rates. With the use of appropriate application
equipment, powder materials, and efficient recovery methods,
one coat application and overall powder utilization of 95%
to 98% are readily available. And if more than one color is
required, color changes can be accomplished in a relatively
short period of time
Economy
While the factors above contribute to the economical benefits
of powder coating, there are additional cost savings which
include minimum operator training and supervision for a powder
line, simplified clean-up of the operation, and easier compliance
with federal and state regulations which saves both time and
money.
Excellence of finish
Powder coating produce an attractive finish, which offers
excellent resistance to corrosion, heat, impact, abrasion,
fading from sunlight, and extreme weather. Color selection
is virtually unlimited with high and low gloss, metallic,
and clear finishes available.
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