jauhemaalattua

Jauhemaalattua is Finnish for "powder-coated." It is used to describe surfaces finished by powder coating, a coating process in which dry powder is electrostatically applied to a prepared surface and then cured with heat to form a durable film.

Process overview: The workpiece undergoes cleaning and pretreatment (for example degreasing and corrosion-inhibiting steps). Powder particles are charged and sprayed onto the surface, where electrostatic attraction holds them in place. The coated part is then heated in a curing oven, causing the powder to flow and cross-link into a continuous, adherent film.

Materials and finishes: Powder coating is mainly used on metal substrates, such as steel and aluminum. The typical dry film thickness ranges from about 50 to 100 micrometers. Finishes include a wide range of colors and textures, from glossy to matte and textured, offering both decorative and protective options.

Advantages and limitations: Benefits include high resistance to corrosion, impact, and weathering, uniform coverage, and the absence of solvent emissions. Overspray can be recovered and recycled, improving material efficiency. Limitations include the need for conductive substrates and curing equipment, potential defects such as orange peel if application is improper, and challenges with complex geometries or parts that cannot withstand curing temperatures.

Applications and scope: Jauhemaalattua is widely used for automotive parts, household appliances, architectural metalwork, bicycle frames, machinery enclosures, and exterior furniture. The method is a common industrial finishing technique worldwide, including in Finland, due to its durability and versatility.