2) The second step process is twin screw extruder for reacting compounding
Need long L/D and high torque gearbox for enough reacting time and dispersion
Small extruder with less clearance is key points for this process.
Need special screw elements for premixing the liquid and polymer.
Premixing and volumetric feeding is enough for this step process.
According to the Hardness of final pellets, we can choose water ring pelletizing or Under water pelletizing.
Pellets for the first step process, Vulcanizing Agent, the Extra Oil, Other Additives.
Technical Specifications of Extruder: