PC control thermoplastic melt flow indexer meter; MFI series Melt Flow Index Tester/Extrusion Plastometer. 
Melt flow index measuring equipment are used to determine the melt mass flow rate (MFR) and melt volume flow rate (MVR) of a plastic melted mass. Measurement of the flow behavior of the melted material is used to compare different grades of the same polymer and provides an important parameter for quality assurance and incoming goods inspections, for material selection and the setup of processing machines by plastics processors. Demands on these melt flow indexers vary according to which plastics processing stage is involved.

Why the melt flow index test is important for polymer material? 

The melt flow rate tester characterizes the viscous flow properties of thermoplastic materials by measuring the mass or volume of the material that flows through a standard die over a period of 10 minutes at a specified temperature and load. Its core principle is to convert the flow resistance of the plastic melt into quantifiable numerical indicators, which are used to evaluate the processing flow properties of the material.

Wht's the MFI Test Measurement Principle: 

This instrument employs a mass method measurement principle, allowing the plastic melt to flow through a standard die (with a diameter of 2.095±0.005mm and a length of 8±0.01mm, made of tungsten carbide) at a preset temperature. It records the amount of melt that flows out within 10 minutes (measured in g/10min). 

Standardized test conditions are achieved by controlling the temperature (usually at the material's melting temperature, such as 190°C for PE, 230°C for PP), load (adjusting the weight of the weights), and shear rate (which is related to the die size).

Conform with stardard: 

ISO 1133  "Plastics - Determination of the Melt Mass-Flow Rate (MFR) and Melt Volume-Flow Rate (MVR) of Thermoplastics”

ASTM D1238  "Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer“

JIS K7210; DIN 53735;  ASTM D3364; BS 2782 Part 7: Method 720A (BS2782-7)

Feature of MFI405:
PC and software control, both MFR/MVR test method, motorized cutting, show the temperature VS time curve, connect A4 paper printer to print test report, test data.
 
Test Procedure:
Approximately 7 grams of the material is loaded into the barrel of the melt flow apparatus, which has been heated to a temperature specified for the material. A weight specified for the material is applied to a plunger and the molten material is forced through the die. A timed extrudate is collected and weighed. Melt flow rate values are calculated in g/10 min. 

Specimen size:
At least 14 grams of material;

Data:
Flow rate = ( 600/t x weight of extrudate ) 
t = time of extrudate in seconds
melt flow rate = g/10 min.

Other name:
Melt flow index testing equipment; melting flow indexer; melt indexer iso 1133; digital melt flow rate tester; quality melt flow index testing machine; melt flow index astm; plastic Melting Flow Index tester

Main Specification: 

^{ISO 1133  "Plastics - Determination of the Melt Mass-Flow Rate (MFR) and Melt Volume-Flow Rate (MVR) of Thermoplastics”
ASTM D1238  "Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer“
ASTM D3364 (for PVC), BS 2782, DIN 53735, JIS K7210}