Roots Screw Vacuum Unit for Melt Devolatilization and Degassing

In extrusion processes requiring clean vacuum generation and effective handling of condensable vapors, skid-mounted vacuum systems combine a dry screw backing pump with a Roots booster to provide oil-free and water-free devolatilization and degassing.

Case Study: Roots Screw Vacuum System for Melt Devolatilization and Degassing

Fig 1: DVBS-160.EM / DVBS-550.160.EM Roots Screw Vacuum Unit.

• System Composition: A skid-mounted package integrating a Roots Vacuum Pump, Variable-Pitch Dry Screw Vacuum Pump, process piping, and electrical control cabinet.
• Operating Performance: Provides high pumping speed and stable vacuum performance for melt devolatilization and degassing.
• Key Features: Oil-free and water-free operation helps prevent melt contamination; variable-pitch screw design reduces exhaust temperature and power consumption; skid-mounted design allows easy integration with extrusion lines.