A Triple Roll Mill is a machine that uses the shear force created by three horizontally positioned rolls rotating at opposite directions and different speeds relative to each other to mix, refine, disperse, or homogenize viscous materials fed into it. The pasty substance is fed into the hoper, where it is drawn between the feed and center rollers. 
When pre-dispersed, the substance sticks to the bottom of the center roller, which transports it into the second gap. In this gap the paste is dispersed to the desired degree of fineness. The scraper system removes the finished product from the apron roller.
The three roll mill / triple roll mill is widely used for printing ink, pigments, paints, chocolates, soap, grafite, rexin, confectioanry, cosmetics, rubber, plastics and chemical allied industries.