SK3000E E Impeller Kneader

Working Principle

The SUNKAIER SK3000E kneader operates on the principle of intensive kneading and dynamic surface renewal at low shear rates. 

1. Concentrated Phase Processing: Unlike traditional stirred tanks that require solvents to manage viscosity, the kneader works directly in the concentrated phase. It uses mechanical energy to transform polymeric mass into free-flowing granules before viscosity peaks.
2. Kneading Action: The rotation of the shaft(s) causes the kneading elements to intermesh, creating a "stretching and folding" motion. This provides excellent homogenization and prevents the "Wickel effect" (product wrapping around shafts).
3. Thermal Control: Large heat-transfer surfaces (on the casing, shaft, and kneading elements) allow for precise temperature regulation. Highly exothermic reactions are often managed through evaporative cooling, where monomer or solvent evaporation removes heat.
4. Axial Conveying: The low rotational speed (typically 10–100 rpm) gently conveys the product axially toward the discharge end. In continuous models, the discharge is often handled by a twin-screw conveyor or gear pump.