Powder Coating

In our powder coating facility, all products are degreased (and derusted if necessary) and iron-phosphated, ensuring excellent adhesion for the subsequent coating process. The standard color used is RAL 9005 jet black.

However, the entire RAL color palette is available to our customers.

Powder coating is a finishing process in which an electrically conductive material is coated with powder paint. A typical coating line includes surface pretreatment (cleaning and/or applying a conversion layer), intermediate drying, electrostatic coating, and curing in an oven.

The resulting powder coatings typically have thicknesses between 60 and 120 μm. Due to their identical electrical charge, the powder particles – or the ions adhering to them – repel each other, forming a uniform powder cloud.

Each ionized particle that strikes the workpiece generates a countercharge upon impact. The attraction between the charges ensures that the particles adhere firmly to the workpiece.

The curing process, also known as baking, begins as the powder melts in the oven. The viscosity of the system first decreases, reaching a minimum, and then rises again as cross-linking progresses.