Paddle Style agitators are specially designed to scoop, lift and tumble materials in a gentle, but thorough mixing action. While being mixed, the material travels in a three dimensional "figure 8" pattern. the material is constantly being pulled from the ends of the mixer to the middle of the "figure 8" where the most aggressive mixing is taking place. This unique paddle design is ideal for mixing solids or liquids of various particle size, density and viscosity. The gentle scooping action is ideal for blending fragile ingredients such as nuts or fiberglass strands. Paddle mixers work effectively when filled to as little as 20% of rated capacity, thus allowing flexibility of batch sizes. Paddle style agitators allow easier access for cleaning between batches.
Double Ribbon mixers are capable of performing a variety of mixing operations. These agitators are excellent for low density, free flowing materials. Ribbon mixers are designed for thorough end to end mixing. Two inner spirals move the product away from the discharge, while the two outer flightings move the material back toward the discharge opening. The mixing action occurs by rolling the material back and forth. Marion's design provides a continuous spiral from the end of the mixer to the discharge. There are no gaps in the flighting to interrupt product flow and create "pockets" of stagnant material. Marion's ribbon design includes two sets of flighting on both the inner and outer spirals. Each spiral is positioned 180 degrees out of phase. The additional flighting provides twice the mixing action of a single ribbon mixer. In mixes with small agglomerates, the greater shearing action of a ribbon mixer can be beneficial.
Double Reversing agitators are a hybrid between a paddle and a ribbon. With paddles located at the outer radii and ribbon flighting located on the inner radii, the agitator provides the "figure 8" movement of a paddle style mixer with the scrubbing action of a ribbon blender. This aggressive mixing action transfers more energy to the product being mixed than either the standard paddle or ribbon agitator designs. This agitator design creates a more even product level in the mixer, thus allowing larger capacities to be mixed per batch
Another hybrid variation similar to the double reversing (paddle/ribbon) agitator is the double reversing (paddle/paddle) agitator with (2) sets of paddles moving in opposite directions in a figure "8" movement.