New In-Line Measurements For An Evaluation Of Processing Aids In The Injection Molding Process

摘要

Plastics are made of polymers and additives. For good processability special additives are necessary. Some additives were used for a better ejection and flow behavior. To get a proper classification of additives, new in-line measurements were developed. The flow behavior of plastics can be determined with an in-line viscosity measurement in an injection mold. To classify the ejection behavior during the injection molding process, the demolding force and the normal force were used. The new in-line measurement allows a detailed classification of processing aids in plastics.