Powder coating is a finishing process in which dry, free-flowing, thermoplastic or thermoset powder material is applied to a surface, melted, and hardened into an even coating. This finishing process is suitable for various materials, including metals, plastics, glass, and medium density fiberboard (MDF), and can provide both functional and decorative surface coatings in a wide range of colors, finishes, and textures that are not readily achievable by conventional liquid coating methods.
 

There are two main methods of powder coating—electrostatic spray deposition (ESD) and fluidized bed application. Either process can produce an even, hard finish which is generally more durable, cost-effective, and environmentally-friendly than a comparable liquid coating. However, while powder coatings demonstrate some advantages over liquid coatings, especially in thick or high traffic coating applications, they are not suitable for all manufacturing applications, such as for thin film or large part coatings. The requirements and specifications demanded by a particular powder coat—e.g., application environment, substrate materials, sizing, costs, turnaround times, etc.—help determine the type of coating process most suitable for use.