![]() However it may reduce mechanical properties. You can increase MFI by mixing with some lubricant. The measured MFR value was found equal to 7.27 g/10 min and related MVR 5.99 cm 3/10 min, with a measured melt density of 1.2 g/cm 3. Melt flow rate values are calculated in g/10 min. A timed extrudate is collected and weighed. How is melt flow rate calculated?Ī weight specified for the material is applied to a plunger and the molten material is forced through the die. … In general extrusion can be performed with polymers with lower melt flow indices than injection moulding. MFI is a simple measurement of the quantity of polymer pushed through a die of specified dimensions at a set temperature within 10 min. What is MFI in injection molding?ġ Melt flow index. The test system consists of: A heated barrel with a removable die at one end. Values are taken at a certain temperature and with a certain mass applied, dependant on material. ![]() What is a melt flow test?Ī melt flow test measures the melt flow rate (MFR) and melt volume rate (MVR) of a molten polymer. The MFI value quoted on many datasheets refers to the amount of polymer that is extruded through a known given orifice (die) and expressed as quantity in g/10 mins or for Melt Volume Rate in cm3 /10mins. ![]()
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