Demand for lightweight electric vehicles continues to increase steadily as they save electricity and increase their driving range. Major car manufacturers are gradually prioritizing using low-density sealants and LASD to reduce weight. Incorporating hollow glass microspheres into LASD materials and PVC sealants reduces the density of PVC adhesives by more than 30% without affecting their physical properties, thereby reducing overall vehicle weight.
However, these high-viscosity materials pose significant challenges for both automotive industry users and the pump itself. Glass microspheres greatly increase material abrasiveness compared to conventional adhesives. Traditional PVC supply pumps can show signs of wear on the fluid seals within a week and often require replacement after three months. This not only takes time and effort but also increases costs and disrupts production, significantly reducing efficiency. Dürr's high-pressure and high-flow PVC EcoPump VP 500 handles the material more effectively. The pump’s parts that come into contact with the liquid are coated with a special mirror-like ceramic coating, making it more resistant to wear than conventional coatings due to its very hard and smooth surface. Consequently, the EcoPump VP500 can withstand greater loads and impacts when used in combination with LASD, effectively increasing the supply pump’s lifespan.
A unique design for high-pressure adhesive applications
In addition to the special polished ceramic coating, the EcoPump VP 500 also features a sealing package that doesn’t require an initial force application. This unique design eliminates the need to regularly tighten the sealing gasket, effectively optimizing adhesive leakage and significantly reducing the risk of adhesive solidification through contact with air. Additionally, the pump’s large cross-section and low flow rate enable high-pressure, low-speed adhesive flow within in the pump body, minimizing shear forces on the device.
The EcoPump VP 500 earned an Asian car manufacturer’s trust after one year of production in their 60-jobs-per-hour paint shop. Several customers who have used the EcoPump VP 500 confirmed that the pump requires no seal ring replacement during one year of operation and boasts a significantly longer service life than the industry average.
