Extrusion Components
Side Vacuum Venting Systems
Introduction
Side Vacuum Venting Systems are designed to efficiently remove air, moisture, volatile compounds (VOCs), and low-molecular-weight gases from polymer melts during twin-screw extrusion. Installed at the venting section of the extruder, these systems create a stable vacuum environment that enhances devolatilization efficiency while preventing material carry-over and maintaining continuous production.
Engineered for modular co-rotating twin-screw extruders, Side Vacuum Venting Systems improve melt quality, reduce processing defects, and enhance overall extrusion performance. They are widely used in engineering plastics, recycled materials, high-filled compounds, and reactive extrusion processes where effective degassing is essential for producing high-quality finished products.
Overview
During polymer compounding and extrusion, residual moisture, entrapped air, reaction by-products, and volatile substances can negatively affect product quality and process stability. Side Vacuum Venting Systems provide an efficient devolatilization solution by combining vacuum extraction with gas-solid separation technology, allowing gases to be removed without interrupting material conveying.The modular twin-screw conveying structure, together with an optimized cooling channel design, ensures stable vacuum performance, minimizes material backflow, and improves the flexibility and adaptability of the extrusion process across a wide range of materials and production capacities.
Technical Specifications
- Product Series: VST Side Vacuum Vent Machine
- Working Principle: Side Vacuum Degassing with Gas-Solid Separation
- Compatible Extruder Size: Ø25–Ø110 mm Modular Co-rotating Twin-Screw Extruders
- Available Models: VST 25, VST 35, VST 45, VST 58, VST 63, VST 75, VST 95
- Barrel Diameter Range: Ø25.5–Ø96 mm
- Screw Diameter Range: Ø25–Ø95 mm
- Center Distance Range: 19.5–72 mm
- Screw Rotational Speed: 310 rpm
- Motor Power Range: 0.75–11 kW
- Barrel Material: Cr12MoV
- Core Shaft Material: 40CrNiMoA
- Screw Element Material: W6Mo5Cr4V2 or Cr12MoV
- Cooling System: Water-Cooled Barrel
- Installation Method: Side-Mounted Modular Connection
- Customization: Available for different extruder configurations and processing requirements.
Key Features
- Efficient degassing of air, moisture, VOCs, and low-molecular-weight volatiles.
- Gas-solid separation technology minimizes material carry-over during vacuum venting.
- Prevents vacuum blockage and liquid reflux for continuous production.
- Optimized modular twin-screw structure ensures stable material conveying.
- Water-cooled barrel design improves operational reliability and process stability.
- Compact side-mounted configuration allows easy integration into existing extrusion lines.
- Enhanced devolatilization efficiency improves melt homogeneity and finished product quality.
- Reduced processing defects caused by trapped gases, moisture, and volatile compounds.
- Compatible with most modular co-rotating twin-screw extruders.
- Custom-engineered solutions available for different materials, capacities, and extrusion systems.
NOTE: The Side Vacuum Vent Systems can be customized to match different modular co-rotating twin-screw extruder sizes and processing requirements. Wear-resistant materials and special alloys are available for highly abrasive or corrosive applications. Installation interfaces, connection dimensions, and auxiliary configurations can be tailored to individual production lines, while technical support is provided for equipment selection, process optimization, installation, and commissioning.
Applications
The VST Side Vacuum Vent Systems is designed for extrusion processes requiring efficient removal of moisture, entrapped air, volatile compounds (VOCs), and other low-molecular-weight gases from polymer melts. By improving devolatilization efficiency and maintaining a stable vacuum environment, the system helps enhance melt quality, reduce surface defects, and ensure consistent processing performance.
It is widely applied in engineering plastics, recycled plastics, biodegradable materials, high-filled compounds, wood-plastic composites (WPC), masterbatch production, and reactive extrusion processes where effective exhaust, devolatilization, and condensate drainage are critical to product quality and production efficiency.
Interested in This Product?
If you’re interested in this product or have a specific application in mind, feel free to contact us. Share your material, process requirements, production capacity, and application details, and our team will recommend the most suitable configuration and technical solution to meet your production needs.
Our engineering team will recommend the most suitable solution.