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Wednesday, July 23, 2014

Powder Coating Application: Methods of Application

There are several ways to apply powder coatings. Each has its benefits, as well as its disadvantages, and which method you use depends on the job itself. Here is a quick overview of the different powder coating application methods.

Fluidized bed – Constant airflow keeps the powder circulating, then heated parts are dipped into the bed and the powder melts to the part.
Electrostatic fluidized bed – This is similar to the conventional fluidized bed, but the powder is repelled by electrostatic charges, not air, to keep it suspended.

Corona electrostatic spray – Powder particles pass through a spray gun tip that charges the powder particles, which are then attracted to an oppositely-charged substrate.
Tribomatic electrostatic spray – Electrons are stripped off the powder particles to create a charge, then they are attracted to an oppositely-charged substrate.
Hot Flocking – Preheated substrates are sprayed with powder, and it melts to the part immediately.

Flame spray – Used for thermoplastic powders, powder is propelled through a flame to melt it.

For more information about powder coating application methods, read TCI's Troubleshooting Guide. More detailed advantages and disadvantages of each method will be discussed in future blogs.

Intech Services and TCI Powder Coatings have partnered to create TruPak, a program that offers over 300 of TCI's most popular powder coatings in 1, 3, 5, and 10 pound boxes. Click here to buy TruPak powder coatings.

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