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Automatic Melt Flow Indexer

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Automatic Melt Flow Indexer
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Melt Flow Indexer

The Melt Flow Indexer is designed to determine the melt mass-flow rate (MFR) and melt volume flow rate (MVR) of thermoplastic as well as test the high melt temperature such as PC, Fluor plastics, and nylon, but also PE, PP, POM, PS, ABS resin which has low melt temperature. This testing machine is designed to perform tests according to AS, ASTM and ISO standards. 

The specimen is melted under high temperature by heating the furnace. The melted specimen flows out a specified hole under the given load. In plastic producing activities, we usually use the melt index to measure the physical properties of the polymer, such as the fluidity or mucosity, etc.

Parts of the Melt Flow Indexer 

Monitor: A touch screen LCD. Operate the tester according to the relative dialogue box. Touch the relative dialogue box or button to input the test parameters and the relative page shows the test temperature, the rod displacement and the real-time curve of MVR.

Printer: When the test ends, input the mass value of the melted specimen to check or print the MFR test data as well as check or print the data directly.

PLC: Receive the orders from the touch screen to measure and control the furnace temperature and determine the displacement of the load rod.

Furnace Chamber: Consists of heating cover, cylinder, die load rod and removable weights.

Spatula: Made up of the motor, the cover and the edge. The motor drives by the tester and rotates automatically to make the edge cut the sample so as to avoid the human error of manual cut.

Displacement Sensor: Installed at the upper right back of the tester, together with the load rod, measures the displacement of the load rod.

Parts of Melt Flow Indexer - plastic testing machine


  • Plastics


  • PLC controlled
  • Touch LCD display
  • Automatic sample cut
  • Automatic test result print
  • Curve display in LCD indicator
  • Intelligent, modular system which offers flexibility of testing and increased automation
  • The main base unit can be configured for either manual or fully automatic testing


  • Reliable and is easy to operate


  • ISO1133 - Plastics — Determination of the melt mass-flow rate (MFR) and melt volume flow rate (MVR) of thermoplastics — Part 1: Standard method
  • ASTM D1238 - Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
  • ASTM D3364 - Standard Test Method for Flow Rates for Poly(Vinyl Chloride) with Molecular Structural Implications

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