Vacuum Pump
Vacuum pumps for vacuum infusion, Vacuum bagging, and MTI® process
What is the function of a vacuum pump in laminate production?
A vacuum pump creates the vacuum pressure needed to move resin and air within the laminate. During infusion, excess air is extracted from the part, preventing voids and ensuring an optimal fiber-to-resin ratio. In combination with vacuum bagging films, sealant tapes, and infusion hoses, the entire process can be carried out in a stable and reproducible manner. The rotary vane vacuum pumps from HP-Textiles operate with a final pressure of up to 2 mbar absolute, ensuring consistent infusion results even with large laminates or complex geometries.
Which vacuum pumps does HP-Textiles offer?
The range includes two high-performance models designed for different part sizes and process requirements: The HP-VZ1200 is a compact, lightweight rotary vane vacuum pump with a flow rate of 67 l/min (4 m³/h) at atmospheric pressure. It is ideal for small to medium-sized laminates and stands out for its low weight of just 5.4 kg and quiet operation at 52 dB(A). For larger parts and series production, the HP-VZ2000 is available, offering a flow rate of 333 l/min (20 m³/h) and a motor power of 750 W, reliably generating the required vacuum for large-scale infusions. Both models come supplied with vacuum pump oil, intake filter, adapters, and vibration dampers – ready for immediate use in composite manufacturing.
Which accessories are necessary for operating a vacuum pump?
For long-term, reliable performance, the correct vacuum pump oil is essential. HP-Textiles recommends a special shear-stable mineral oil with a high viscosity index, offering both thermal and oxidative stability. This oil minimizes wear, protects against corrosion, and ensures consistently high pumping performance. Additional accessories such as vacuum gauges, shut-off valves, and vacuum hoses help monitor process pressure and control resin flow precisely. Intake filters and adapter fittings also extend the service life of rotary vane pumps by protecting the system from particles and resin contamination. This not only increases operational safety but also boosts the efficiency of the entire vacuum system.
How is a vacuum pump used in the infusion process?
The vacuum pump is connected to the part via vacuum hoses and hose connectors. During resin infusion, it maintains a constant vacuum pressure that pulls the resin through the laminate stack while simultaneously removing excess air. Precise pressure regulation ensures uniform resin distribution, significantly improving part quality. Positioning the pump close to the vacuum inlet reduces pressure loss and optimizes laminate degassing. When combined with accessories such as the MTI® VALVE, shut-off valves, and vacuum gauges, the process can be monitored and controlled with precision – even for large-scale or complex CFRP/GFRP components.
For which applications are HP-Textiles vacuum pumps suitable?
These pumps are used throughout the fiber-reinforced plastics industry – from mold making and lightweight construction to boat and yacht building, as well as the series production of CFRP and GFRP components. They are compatible with vacuum infusion, vacuum bagging, and the MTI® process, and can be combined with the full range of HP-Textiles vacuum accessories. Thanks to their high performance capacity and reliable continuous operation, they are suited for prototype manufacturing as well as industrial series production. Even with large laminates or multi-part molds, these pumps provide stable vacuum pressure. This makes them a reliable choice for demanding projects in wind turbine blade production, aerospace engineering, and automotive lightweight design.