Because of their diversity of properties, plastics are the key to technical innovation in the automotive sector. PVC represents the third most important plastic in this application, with a share of around 10%. Parts made of PVC are durable or have special protective functions for other materials. For example, PVC plastisols used as underbody protection prevent corrosion of a motor vehicle. In the automotive industry, Filtration Group’s edge gap technology has been used in this application for many years. Filtration Group Industrial has chosen an AF 71 H edge filter for the filtration and homogenization of highly viscous PVC.
Due to the composition of the PVC media (fillers), filtration is a finely tuned process step. Only in this way can the vehicles be optimally protected and meet the high visual requirements of the paint shop. Filtration Group Industrial has opted for an edge filter for the filtration and homogenization of highly viscous PVC. Here, the PVC pastes range from approximately 2,000 – 4,000 mPas at 40°C. Filtration Group Industrial worked closely with the fluid supplier to find the perfect solution for the end customer. The key point was to find the right filter fineness that would filter out all harmful particles and agglomerates, but leave all relevant additives and protective components in the liquid PVC. FG Industrial supplied several test filters to find the right solution. All testing was done in conjunction with the fluid supplier. The final solution was an AF 71 H edge-split filter with a fineness of 250 μm. The filter contains a metallic edge gap filter element that can be cleaned manually without interrupting the process.
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