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Orange Peel/DOI

wave-scan dual

Orange Peel and DOI measurement onhigh to semi gloss surfaces

...appearance control is no longer limited to final topcoatinspection. Like the wave-scan DOI, the optical profile of high gloss surfaces is detected using a laser light source. An additio nal, infrared - high energy LED allows measuring thesame structure spectrum (0.1–30 mm) on medium gloss surfaces. The dullness measurement is recorded with state- of-the-art CCD camera technology. It gives information on the image forming qualities of the surface caused by structures

Close the appearance control loop for theentire paint process

Thus, the surface quality after each paint process step canbe objectively evaluated. No more guessing which substrate layer is influencing the final appearance. The wave-scan dual will help you to objectively analyze appearance prob -lems and reduce the time necessary for trouble shooting.

Example: Influence of Steel Quality onFinal Appearance

Step 1: Appearance Control after E-coatStep 2: Appearance Control after Primer Surfacer Same E-coat system was applied on rough and smoothsteel. The influence of rougher steel can be seen in increased Wb and Wc-values. The primer surfacer was applied on both panels. Theroughness of the steel quality can still be detected inincreased Wb and Wc- values. This primer system could notcompletely cover the steel influence. Step 3: Appearance Control after Topcoat wave-scan dual –a diagnostic tool for trouble shootingand optimizing appearance Now, you can establish appearance specifications for eachpaint layer to ensure the final appearance is always on target. The final appearance shows higher shortwave values on therougher steel panel. Therefore, the smooth panel will appear more brilliant. 38

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