A further, important aspect is the plasticizing unit, which is often a cause of the errors mentioned above when it was not designed correctly. Solid inclusions or differences in color deserve a specific mention here. By analyzing the homogeneity of the melt zone the KTP can advise you in designing your plasticizing unit. The engineers are using the application PSI belonging to the department, which allows them to simulate and analyze every required design parameters and to optimize the screws’ geometry. In addition your design can be verified through measurement series in our laboratory.