Automated / Optical Sorting System
Automated optical sorting can be used to separate different grades of glass, paper, plastic and aseptic (Tetrapak) containers from a waste stream or from each other using a variety of sensing methods. Sensing techniques include: near infrared (NIR), high resolution color cameras, X-ray fluorescence, inductive metal detectors and combinations of these sensors. The material to be sorted is fed into the optical sorter where it is “examined” by the sensor. Then an electronic processor determines what the material is and activates a series of air jets that redirects the desired material slightly out of the main material flow and into a separate chute. This technique is repeated as necessary to remove all of the desired materials.