Plastic sheets are widely used, e.g. in the areas of packaging, office supplies, construction, automotive, furniture, clothing and medical industry. In 2013, the plastic sheet and plate processing industry in Germany generated sales of 12.9 billion euros (approx. 68% SMEs) with approx. 47,000 employees. The European market for high-quality multi-layer plastic sheets amounts to approx. 200 million m² / a. The quality of the materials is essentially affected by the conditions during the manufacturing and further processing. Current random manual quality checks cannot certainly prevent economic damages and reputational losses for manufacturers.
A promising measuring system for the inline recording of quality parameters is the optical Web Tension Profile Scanner (oWTP scanner). The project aims to enable the use of the scanning process for inline product quality control of extrusion and reverse roll coating process especially the delamination process/reuse of the release paper.
The project goal is the identification, quantification and weighting of the quality-influencing parameters, the development of the basis for optimized flat film extrusion, an optimized storage of plastic sheets as well as an optimized reuse of release papers.