Lab Size Electrical Heating Vacuum Kneader (sigma mixer) for Ink, Silicone Rubber, CMC. 30+ Years Manufacturing Experience: Top manufacturer in China with over 30 years of expertise in kneader production. Vacuum Mixing Capability: Equipped with water-loop or rotary vane vacuum pumps for high-quality mixing. Dual Heating Options: Available with electrical, steam, or oil heating systems for versatile processing. Multiple Discharge Methods: Offers tilting, screw extruding, or bottom valve discharge with manual or pneumatic control. Wide Viscosity Range: Designed for high and medium viscosity materials like silicone, rubber, and ink. CE Certified Safety: Meets CE certification standards for safety and quality compliance. Customizable Blade Shapes: Double-blade design available with various shapes to suit specific mixing needs. Water Cooling Jacket: Features mixing vessel jacket water cooling for precise temperature control.