Melt flow rate measurement test (MFR, MVR)
The plastic melt mass flow rate test is a test that is used to measure the plastic melt mass flow rate through the mold opening. This test is commonly used to measure the flow characteristics of polymer melts such as viscosity, shear rate and pressure.
The higher the MFR value, that is, during a fixed time (10 minutes), the more amount of plastic flows at the test temperature, that is, the resistance to flow of the polymer or plastic is lower and it flows more easily, the flow resistance is We know a concept called viscosity. As a result, the higher the MFR of a polymer, the lower its viscosity.