pps proceeding
Symposium: S11 - In-line Analytics and Process Monitoring Oral Presentation
Material Characterization in the Injection Molding Process
Geyer Alexander (1)*, Bonten Christian (1)
(1) Institut für Kunststofftechnik - Baden-Württemberg - Germany
In injection molding, economic production can only be achieved with the highest possible process speeds while maintaining the same high quality. Therefore, not only the machines but especially the materials are continually developed further. Such new or modified materials currently are mainly characterized in laboratory investigations. However, the transfer to the actual injection molding process is not well implemented. For this reason, the IKT researched new measurement methods, which allow the determination of various material properties directly in the injection molding process. This is, on the one hand, a viscosity measuring nozzle, which shows results with good accordance to literature and laboratory measurements, while allowing a much faster in-line measurement. On the other hand, a demolding force tool has been developed and improved in order to characterize the demolding behavior of various plastics and/or additives. With the measurements this mold provides, it is even possible to calculate a new coefficient of friction, which is in very good accordance with measured values. The new research results provide means to further increase the efficiency of the injection molding process.