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Uralac® Ultra: Powder coating for heat-sensitive substrates
How does the technology behind Uralac® Ultra-enabled powder coating work? How does it differ from traditional liquid-based coating? And what are the benefits? We are excited to show you this, and more! Have a look...
The Uralac® Ultra powder-coating process
MDF is shaped, cut, routed and sanded as determined by the designer. Due to the ease of processing the one-layer Uralac® Ultra coating, you can choose almost any shape.
Climatizing the MDF for a stable moisture percentage will make the process more consistent through different weather conditions and MDF supplier variations. Typical moisture percentages lie between 4 and 8%.
Loading
The coating process starts by loading the conveyor belt with the MDF objects. The MDF is hanging from metal hooks to ensure proper grounding of the material.
Preheating
The first step in the application process is preheating. In an IR oven, the MDF is heated to 50-60ºC for a good homogeneous conductivity of the substrate.
Spraying
Application of the Uralac® Ultra powder is done with standard corona spray guns. The use of an active counter electrode ensures an evenly applied layer.
Curing
Curing of the coating is done at 130ºC for 3 minutes, depending on the substrate and powder used. Heat-up time varies between 2 and 5 minutes.
An infrared oven is needed for fast heat-up and cure without overheating the MDF. 130ºC is low enough to not damage most types of MDF.
Unload, pack & ship
After cooling down, the conveyor belt can be unloaded. The cooled down MDF has a fully cured coating and is ready to be packed and shipped.
Powder Coating Line Layout
