Before the painting process, workpieces must be thoroughly cleaned and pretreated. The cleanliness of the part’s surface is crucial to achieving optimal paint quality.
Pretreatment processes are tailored and planned individually based on the specific requirements of the substrate.
Pretreatment of plastic parts
Powerwash systems have become the preferred solution for cleaning and pretreating plastic components. In this method, parts are sprayed with an alkaline cleaning solution under pressure and elevated temperature through nozzles. The parts then pass through multiple rinsing zones before being dried in a water dryer.
In addition to spray pretreatment, we also utilize other effective methods such as:
- Flame treatment
- CO2 cleaning
- Plasma treatment
- Fluorination
Pretreatment of metal parts
Metal workpieces are prepared for the painting process through spray or dip pretreatment, depending on the process requirements and raw substrate.
Typical process steps include:
- Degreasing
- Activation
- Zinc phosphating
- Multiple rinsing stages
Additional pretreatment options such as pickling, nano-coating, and conversion coating can also be applied where needed.
