Filament yarns are key players in many textile and technical applications. Textechno’s universal filament yarn tester DYNAFIL ME+ has been developed to measure their most important properties in an easy and precise manner. The basic measurements relate to the inner regularity and consistency of the yarns and their behaviour under elevated temperature.
In contrast to a capacitive evenness tester, the DYNAFIL ME+ determines a CV-value and an absolute mean value. While the CV-value is a good indicator for process stability, the mean value gives further information on package-to-package homogeneity. The mean value relates to inner properties of the yarn such as – on POY (ISO 12834) – the molecular orientation in the amorphous regions and crystallinity.

With the additional equipment COMCOUNT it is possible to carry out an automatic linear-density (count) test either in parallel or in serial. An optional item to the COMCOUNT is a collector for weighed samples. This option allows to automatically prepare samples for spin finish analysis etc.
For flat yarns, the capacitive evenness tester COVAFIL+ is available as a further option. COVAFIL+ is placed such that the yarn runs through it for evenness testing before entering the DYNAFIL ME+ for further tests. Tests can be run in serial – or simultaneously if no mutual influence of the individual test methods is observed. The selfthreading twister of COVAFIL+ facilitates threading a lot. For further details please refer to the leaflet of COVAFIL+.