There are optical readers on the side of this fast-moving belt that can recognize what types of plastic are flowing across. The machine uses more than 100 parameters to identify an object, including color, shape, and density. Once it recognizes that something is a particular type of plastic, it sends a jet of air a few seconds later. As the photo here shows, that jet of air sends certain types of plastic containers to a separate bin. The rest drops below.
January 24, 2011 4:00 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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