Inspection and Sorting of Plastic Pellets as a Guarantee for Visually and Functionally Perfect Products

摘要

If flawless raw materials are being processed, common subsequent defects in subsequent processes can be reduced or avoided. Black specks and color deviations often lead to increased scrap rates in the production of plastic injection molded parts and also in the manufacture of profiles, cables and pipes. The same applies to metal inclusions in the pellets, which leave traces in the end product and the processing machines as well as cause costs. As far as black specks are concerned, this type of material contamination is often caused by thermal overload, whereas metallic contamination often originates in the cutting tools of the pelletizing plants.