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Wind sifting falls under too separation classes. Size & Density. In the case of sorting machinery and equipment, optical sorting is done by the “Autosort” component which tells one type of material from another. Like paper from plastic, or PET plastic from HDPE plastic. Whatever materials are being separated at this particular station has certain weight densities. Once two different materials are detected, blasts of air from below, or sometimes suction from above, separates one material from the other.
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