Powder coatings impart significant durability and resistance to abrasion, corrosion and chemicals in comparison to liquid coatings. Environmental advantages have led the way for the conversion of liquid coatings to powder coatings.
Become an expert by learning some basic information about powder coatings, their process, key features and benefits. Also get detailed information on various types of resins used to formulate powder coatings and popular application areas… So let’s get started!
The technology for coating products with dry powder rather than conventional liquids has been available since the 1950s. The powder used for the process is a mixture of finely ground particles of pigment and polymeric resin.
The powder is either:
- Sprayed electrostatically onto a surface to be coated, or
- The substrate is dipped into a fluidized bed of suspended powder
The powder adheres to a preheated substrate surface in the fluidized bed process, or they adhere electrostatically in the spray process. When heated further in a curing oven, the particles flow and fuse into a strong, adhering coating.
The result is a high quality coating with an attractive finish and excellent durability
Although the final properties of the powder coatings are often superior to liquid coating systems. The reason for the fast growth of this technology has been more related to the evidence that powder coatings:
- Maximize production
- Cut costs
- Improve efficiencies, and
- Offer maximum compliance with increasing stringent environmental regulations
Environmental advantages have led the way for the conversion of liquid coatings to powder coatings.