How Does a Melt Flow Index Tester Work?
The testing procedure involves heating the polymer sample to a specified temperature, where it becomes molten. A pre-set load is then applied to the molten polymer, forcing it through a standardized die (orifice). The amount of polymer that passes through the die in a specific time frame is measured, and this value is recorded as the melt flow index.
The test conditions, including temperature and load, are standardized to ensure consistency and comparability across different tests. This standardized process is essential for manufacturers and researchers who need reliable data to make informed decisions about materials and processes.