mi40 Visco - Melt Flow Indexer with Viscosity

The Add-on "visco" for the plastometer mi40 is developed to carry out measurements according to the standard ISO 11443 commonly used for capillary rheometers.

Melt Flow Index Testers, also called plastometers, are used to measure the melt flow rate (MFR) and the melt volume rate (MVR) of pellets, powder or fine granules. Plastometers are generally designed according to the relevant standards ISO 1133 and ASTM D1238.

Using a capillary rheometer, the measurement is more challenging to operate and time consuming compared to a standardized MFR-test. Now using the Add-on "visco" for mi40, running these viscosity tests is as easy as standardized MFR-tests.

In this test mode, the mi40 is using the integrated motor to push the piston at constant defined speeds. The resulting pressure is measured with a force transducer in the piston holder. Compared to normal MFR-measurements, it is possible to reach higher shear rates which are more relevant for actual production processes. Therefore, viscosity tests by this GÖTTFERT Plastometer are more like a processability test compared to the standard MFR-test.