Incoming goods control of thermoplastic granulates
We have an MFI tester to ensure the quality of raw materials in our incoming goods control.
The melt flow index tester is a basis for characterising thermoplastics in the reception control. The results of the measurements are a fingerprint for the behaviour of the material during pro-cessing.
The ascertained value is also a measure of the molecular weight and thus an indication of the mechanical properties of the material. The average molecular weight and the result of the measurement are indirectly proportional.
The MFI tester has further possibilities. For example, rheological data can be ascertained by means of tests with different weights.
In addition, the injector swell behaviour (“swell”) can also be determined. This is the arithmetical relationship between the cooled extrudate and the injector diameter.