Ribbon Blender (also named ribbon mixer) is a basic industrial mixing machine. Vortex ribbon blender consists, basically, of a trough-shaped shell (usually 2 to 3 times longer than its wide) with a semicircular bottom, fitted with a horizontal longitudinal shaft on which are mounted arms supporting a combination of ribbon blades, paddles or helical screws set at approx. 5mm clearance to the semicircular mixer body so that no layer of material remains on the bottom of the ribbon mixer at discharging materials.