Quality Assurance for the Coating of Metal Sheets, Foils, Glass and other Materials
Detecting defective coatings with an infrared camera has many advantages:
- In-line and offline process control avoids costly rejects
- Non-destructive and automated monitoring of coating quality
- Flexible adaptation to different measurement tasks (recipes, belt speed)
- Integration into existing process and system environments
Surface coating of metal sheets, foils, glass or even plastics effectively protects them from external influences, prevents corrosion and wear, and increases scratch resistance, for example. Using infrared cameras and active excitation – for example with the reflectography method – allows non-destructive and process-synchronous monitoring to ensure that these coatings are free of defects as soon as they are applied.
In the process, it is possible, for example, to test the homogeneity and quantity of liquid coatings such as water, oil and adhesive coatings. Furthermore, the properties of various functional coatings made of metals, semiconductors, dielectrics, organic and nanomaterials can be tested by means of thermography.
Advantages over other Test Methods
The inspection is fully automated, online, direct and above all non-destructive. Fully integrated into existing processes and system environments, it avoids costly final inspections and rejects. The automated system can be operated in very fast subframe modes for very fast processes, such as strip processes. Here, the highest sampling rates are combined with the highest geometric resolution. In addition it can be flexible adapted to different measurement tasks (recipes, belt speed).