Spares for Screw and Barrel

Screw and Barrel are the most important elements of an Extruder. These components have been the subject of much research and development which has resulted in the implementation of spiral grooved barrels perfectly adapted to the double –threaded screw.

The Barrel is made of special alloy steel nitrided and honed designed for bearing the pressure of maximum 1000 BAR. A spiral grooved barrel allows forced feeding, this increases output and guarantees remarkable stability and linearity over the entire speed range.

The screw is made of special alloy steel, nitrided, polished, and bored throughout for oil heating/ cooling with thermo regulation system.

The screw is combined with a spiral grooved barrel having a properly equilibrated geometry.

The melting process is determined by the barrier zone. Separation between the solid and liquid phase is achieved, maintaining the solid bed up to the complete melting.

The role of metering zone is to homogenise the molten material and high output without pulsation.