| The fundamental principle behind powder coating is
that materials with opposite electrical charge attract each other. There
are two common methods of applying thermosetting powder coatings: spray
and fluidized bed.
Electrostatic spray is the most common
and versatile application method for powder coating. Powder is supplied
through a delivery hose and spray gun, and is conveyed by clean, dry,
oil-free air. The power is charged by the spray gun's electrode and, when
directed at a conductive, grounded surface, is deposited and held to that
surface by static charge. There are two methods of applying electrostatic
spray; tribo charging and corona
charging.
In fluidized bed coating, heated parts
are either dipped directly into a container of fluidized power, or they
are passed through an electrically charged cloud of powder, which is
created above a container of fluidized powder.
ACRYLICS: High performance finishes with outstanding
weatherability, ranging from thin film clears to very smooth high gloss
colors. GMA (glycidyl methacrylate acrylic) acrylics provide the best
protection for exterior applications. GMA acrylics can also be used as a
topcoat for enhanced performance.
EPOXIES: Ideal for applications requiring ultimate corrosion
resistance, excellent chemical and mechanical properties, exceptional
adhesion, and the ability to meet demanding specifications. Our epoxies
can be custom-tailored to suit specific applications such as long-term
dielectric strength at high
temperatures.
POLYESTERS: Available in TGIC and TGIC-free formulations. They
are tough, attractive, and demonstrated outstanding physical properties
and overbake resistance. They can withstand prolonged outdoor exposure and
are often the coating of choice for lawn and garden furniture as well as
other types of outdoor equipment. Polyester clear coats can be applied
over a basecoat to enhance exterior
performance.
HYBRIDS: A blending of epoxy and polyester resins and are
used primarily for indoor applications. PPG powder hybrids offer better
penetration into corners and recesses (Faraday Cage Areas) and are less
sensitive to overbake on curing than many other chemistries.
POLYURETHENES:Outstanding thin-film appearance and toughness with excellent
weatherability. They are competitive with high quality liquid paints and
demonstrate superior chip, mar, and scuff resistance at thicknesses as low
as 1.5 mils. Their adhesion to properly prepared ferrous and non-ferrous
substrates is excellent, giving them long-term resistance to humidity and
salt spray. Depending upon the base resins and crosslinkers employed, they
can be formulated to provide tremendous variations in chemical and
physical properties to suit individual applications. |
Mail to: 
