Thermoplastic (usually nylon) powders can be applied by pre-heating the component, then immersing it in a bed of powder which is fluidised by pumping air through it. This process deposits a thicker coat than a spray coating and can be faster. There are limitations on this method of coating due to the higher temperatures required and the handling requirements. It is also necessary to fill a tank with powder before anything can be coated. The Electrostatic Fluidised Bed process removes the requirement to pre-heat the object and can be useful for nylon coating small objects with complicated geometry.
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