Co-Kneader is a low-shear rotating and reciprocating single-screw extruder that is designed for the continuous production of shear and temperature sensitive compounds. This technology is completely different than other conventional single or twin screw extruder technologies. Co-Kneader has a unique mechanism. While the shaft rotates axially, also moves back and forth continuously. Also, there are three or four rows fixed pins on the liner walls. These fixed pins will be stay in the gaps of the screw flight while rotating the shaft. During this process, the material is not only sheared between the pins and kneading flights, but also inverted. This unique mechanism ensures the best homogeneous dispersions with shorter L/D rates, lower temperatures and lower pressures.