Industrial waste classification and sorting

Based on the same principle, it is also possible to distinguish between high-quality deinking paper and low-quality non-deinking fractions, like cardboard, even if they are laminated with a high-quality top layer finish. These SI sorting systems operate over conveyor belts with a width between 1.5 and 2.2 m, moving at up to 2.5ms-1. 

A typical example of semi-quantitative analysis of an organic coating on a metal surface is shown in Fig. 7.6. A matted metal sheet is industrially spray-coated with a colourless two-component coating. The task was to determine not only the coverage, something that could also be achieved by using reflectance sensors, but also whether the mixing ratio is within the specification. 

Near-IR sensors are also a topic of increased interest for the analysis of biological materials, from food quality control to bioactivity measurements. First applications 

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