COMBINED X-RAY AND OPTICAL PELLET INSPECTION FOR SMALLEST IMPURITY DETECTION DURING PLASTIC PELLET PRODUCTION AND PROCESSING

摘要

Impurities in plastic pellets have to be detected and sorted out effectively, even when they are melted down into the pellet. This is achieved by a purity inspection system, which includes a combination of X-ray technology and an optical system. The X-ray technology looks inside the pellets, independent of non- transparency and color. With this new technical approach, even 50μm contamination can be detected and therefore a 100% inspection for smallest contamination is possible.