How it Works ?
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Powder coating
is an advanced method of applying a decorative and
protective finish to a wide range of materials and
products that are used by both industries and
consumers. The powder used for the process is a
mixture of finely ground particles of pigment and
resin, which is sprayed onto a surface to be coated.
The charged powder particles adhere to the
electrically grounded surfaces until heated and fused
into a smooth coating in a curing oven. The result is
a uniform, durable, high-quality, and attractive
finish.
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Thermoplastic powders that will re-melt when
heated, and
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Thermosetting powders that will not re-melt upon
reheating. During the curing process (in the oven)
a chemical cross-linking reaction is triggered at
the curing temperature and it is this chemical
reaction which gives the powder coating many of its
desirable properties.
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Coating Procedure consists of the following
stages:
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1. Chemical
pre-treatment process which divided into two
sections.
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First: pre-treatment sequences for
steel works through 9 steps according to German
standards, then drying off.
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Second: pre-treatment sequences for
Aluminium profiles through 8 steps according to
German standards, then drying off.
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2.
After Drying off the work pieces are directly powder
coated through an automatic powder spray booth
supported with 8 super corona type powder guns, or
coated with PVD F coating.
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3.
After Powder Coating the substrates, go through
curing oven at a temperature of 200 degree C for 10 -
15 minutes. According to the powder specifications. |
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4.
The final process is to insure the quality of the
products through visual inspection and laboratory
tests according to the qualicoat standards. Then
packaging polyethylene stretch film to protect the
coating film. |
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