Optical sorting can be used to identify and separate a wide variety of materials including plastics, glass, wood, paper, cardboard and many other items. ABS PP PE PVC Recycling Color Sorter Machine Automatic LDPE Plastic Recycling Color Sorter. Nashville, Tennessee based optical sorting systems manufacturer for the recycling industry, National Recovery Technologies (NRT), has launched a new system which detects materials based on colour analysis and object recognition and is able to recognise opaque objects, such as black plastics… Yet, as do human sorters, optical sorters have some limitations. NRT is a world leader in plastic bottle and flake sorting technology, with the world's largest installed capacity in PET plastic … Big … An equipment manufacturing and engineering company, National Recovery Technologies provides cutting edge sorting solutions to the recycling industry. The solution NRT developed and patented in the early 1980’s was the world’s first optical sorter, applied to sort PVC from mixed plastics. It sorts grain, food and plastic, helping you meet food safety requirements and achieve a purer product quality. For instance, an optical sorter is a pro at sorting polyethylene terephthalate (PET) from high-density polyethylene (HDPE). Yet, the optical sorter starts to run into problems when sorting … Optically sorting pieces of plastic, glass or other materials could be done by spreading the chips out on a wide conveyor then running it under cameras. Intelligent Full-Color CCD 2 Chutes Color Sorter Plastic Optical Sorting Machine. The future of optical sorting. Our sorting equipment uses a range of … View More. Today NRT continues its history of innovation, developing new and improved ways to clean and sort PET and other plastics for the fiber and plastic bottle industries. Optical sorting is essential in any processing operation.