Proper surface preparation is vital for any coating or bonding process. Whether it’s paint, adhesive, or plasma treatment, surface texture plays a crucial role in determining how well materials bond. One of the most effective ways to evaluate this is with optical profilers.
At Omniscan, we use advanced non-contact profilometry systems – including white light interferometry – to help manufacturers optimise surface conditions before coating or treatment.
Why Surface Texture Affects Adhesion
A surface that is too smooth may not provide enough mechanical “key” for the coating to grip. On the other hand, an excessively rough surface can create air pockets or weak points in the bond. Profilometry allows engineers to measure surface roughness and texture in detail, ensuring the correct balance for optimal adhesion.
What Optical Profilers Measure
An optical profiler generates a 3D map of the surface, delivering precise measurements of:
- Ra and Rz (roughness averages and peak-valley heights)
- Waviness and texture direction
- Feature spacing and depth
These metrics help determine whether the surface is suitable for paint, powder coating, plating, or adhesive bonding.
Benefits of Using Optical Profilers
- Non-contact and non-destructive, ideal for pre-treated surfaces
- High-resolution 3D maps for full visual and numerical analysis
- Faster and more repeatable than contact-based methods
- Validation against surface prep standards, such as ISO or ASTM
Improve Surface Treatment Success
From aerospace components to consumer electronics, reliable bonding depends on proper surface preparation. Omniscan’s optical profilers make it easy to evaluate and control surface conditions – before the coating process begins.
Enhance your coating and adhesion performance with precision surface metrology from Omniscan. Get in touch today.