Twin-Screw Extrusion and Compounding Lines

KUNWEI brings decades of polymer processing engineering together in high-torque twin-screw extruders and application-specific compounding lines. Screw shaft, screw elements, barrel and gearbox are designed as one system, so stable throughput, repeatable product quality and energy efficiency are pursued together rather than traded off.

In a twin-screw extruder the shaft, the screw elements and the barrels each face different mechanical and chemical loads. Materials are therefore chosen per component and per recipe: KT18 shaft steel where torque is the limit, powder-metallurgy screw elements for abrasive and corrosive formulations, and barrels either bimetallic-lined or laser-clad with nickel-based tungsten carbide.

The meaningful measure of energy efficiency in extrusion is the energy spent producing one kilogram of on-spec product. Drive efficiency, screw geometry, feeding capacity and temperature control are addressed together to reduce electricity consumption per unit of output — and any comparison should be made on kWh/kg measured at the same product quality.