Extrusion International 3-2018

42 Extrusion International 3/2018 MEASUREMENT TECHNOLOGY PURITY CONCEPT V (Visual) from SIKORA is an innovative offline system for optical inspection and analysis of trans- parent and colored plastic pellets by means of an intel- ligent light table. The material to be tested moves auto- matically through the system and contamination such as black specs are visualized. The system is suited for sample testing of produced material or for incoming goods in- spection. Until now, sample testing of pellets has been carried out mainly by means of light tables. The material to be tested was optically illuminated on a table and manually inspected by the operator. This method depends on the examiner and provides a limited repeatability. Additional limitations are the size of the contamination visual by the human eye as well as the classification by size. Alterna- tive optical offline inspection devices feed the test mate- rial into a hopper and through a channel into the inspec- tion area. Thereby, images are recorded successively and contaminated material is sorted out. Due to the blending of the sorted out material, a clear allocation of the con- tamination to the graphic material as well as a follow-up inspection are impossible. PURITY CONCEPT V contains the advantages of a light table, complemented by an automatic offline material control. The intelligent system moves the test material on a tray through the inspection area. Within seconds, the material is inspected automatically by the color camera and contaminated material is marked directly on the sam- ple tray by a projector. By analyzing the recorded images, contamination on the surface of transparent and colored material are detected automatically, visualized and evalu- ated. A clear allocation of the contamination and follow- up inspection are possible at any time. Thus, the system contributes significantly to quality control and process optimization. SIKORA AG Bruchweide 2, 28307 Bremen, Germany www.sikora.net Optical Offline Inspection and Analyzing System PURITY CONCEPT V launched Intelligent combination of light table and automatic material control PURITY CONCEPT V for automatic, optical inspection of plastic material