NIR sorting is the industry's preferred plastics sorting technology because it can accurately identity the many different polymers already in use today (different polymers reflect an identifiable light spectrum). Testing on widely-used present-day technology proved that Ingeo biopolymer can be identified in the mixed waste plastics stream with very high accuracy.
Titech has demonstrated the ability of its near-infrared sorting systems to eject concentrated amounts of PLA in a PET sorting operation. Sorting efficiency in a single pass was found to be a minimum of 97.5% accuracy. Titech's near-infrared sorting is perhaps the most dominant technology used worldwide.
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