The next stage in Knotwood’s process involves powder coating. Electrostatic guns will be used to make 80-120µ (microns) powder paint layer. Polymerization will be performed afterwards by heating the profiles to 220 degree Celsius for 30 minutes. The base coat that is applied is very durable and scratch resistant. This coat also serves as protection of the aluminum from external factors such as abrasion, corrosion, weather, humidity and UV damage.