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 ... https://incmachine.com/products/ribbon-blender-mixer/