For the measurement of melt-mass flow rate (MFR) and melt volume-flow rate (MVR) according to ISO 1133 Methods A & B and ASTM D1238 Methods A, B, C, & D
Melt Flow Rate is simply the measure of the ease of flow of melted polymers. Small pellets of a material are melted at a controlled temperature and an applied load pushes the sample through a die of specified size. The melt mass-flow rate is the amount of material extruded in 10 minutes, reported in g/10 min.
Melt mass-flow rate (MFR) and melt volume-flow rate (MVR) are typically used in quality control and production control environments as a quick and easy-to-measure index. Though a simple test, melt flow characteristics can be an important part of many quality control and R&D environments in order to:
Critical measurements require instrumentation you can trust. Instron’s Melt Flow Range covers all methods of the most common ISO and ASTM melt flow testing standards and are suitable for a wide range of polymers. Systems are configurable with features that can help increase productivity in a busy lab, and reduce the chance of injury by decreasing operator interaction with the machine. You can find specific information on our melt flow indexers here.
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