A Kneader reactor (or kneading machine) is a device used for mixing and kneading high viscosity material or elastic-plastic material. It's widely used for various mediums like rubber, sealant, polymers, food, etc.
The kneader reactor is a horizontal mixing machine with two Sigma (or Z-type blades, or others). These blades are driven by separate gears at different speeds, one running 1.5 times faster than the other. It has powerful motor and speed reducer to drive the two blades. The kneader reactor usually has a W-type barrel with a hydraulic tilt that turns it, and a heating jacket outside.