Surface treatment of profiles

In principle, all the surfaces of electroplatable materials, e.g. brass, aluminium, copper, zinc, stainless steel as well as suitable plastics, can be refined using surface technology. Special coating practices tailored to customers’ needs such as carbon diffusion treatment or titanium nitride are also possible.

• Anodising
• Electroplating in chrome, silver, gold, ruthenium
• Painting
• Blackening and colouring
• Powder coating
• Veneers
• KTL coating
• Gilding

Through the continuous use of its in-house Konica Minolta spectrophotometer, IsoProfil carries out precise colour analyses on profiles of different shapes with lasting repeatability.

To obtain detailed information about the surface finish of the profile, the data for specular component included (SCI) and specular component excluded are measured in every measuring procedure.

The most common system used for colour measurement is the L*a*b* colour system (also known as the CIELAB system). The colour space of the L*a*b* system is defined by the lightness L* and the colour coordinates a* and b*.

The direction of the colour is indicated by the sign: +a* indicates a red component, -a* points towards green. Accordingly, +b* represents yellow and -b* blue. The central coordinates (axis intersection point) represent a neutral grey without any chroma. As the a* and b* values increase and the point moves out from the centre, the saturation of the colour rises. Figure 1 shows the horizontal section at a constant brightness value L*. Figure 2 shows the complete L*a*b* system colour space.

IsoProfil can paint your products using the following processes:

→ Wet paint: Hydro paints are applied by means of a spray process.
→ KTL coating: The cathodic dip coating offers eco-friendly and high-quality corrosion resistance.

As an eco-friendly form of dry painting, powder coating results in an exclusive design with top-quality corrosion resistance through the application of coats in one single dip. This process enables a wide variety of optics (surface finishes) and is ideal for decorative profiles.

IsoProfil provides powder coatings in different optics (surface finishes) and colours, including:

• Wrinkle finish
• Piano lacquering
• Structure coating
• Wood imitations, e.g. hazelnut, walnut, willow etc.