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.
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