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This automatic melt flow index tester measures MFR/MVR of thermoplastics (high-temp PC, fluoroplastics) with auto-weight loading and cutting. It has multi-stage temp control (RT-450℃), dual platinum sensors, and an Omron encoder for precision. Compliant with GB/T3682, ISO 1133, it retains last test parameters and connects to computers via RS232. Features corrosion-resistant parts and fast temp recovery. Perfect for high-frequency testing in plastic factories, commodity inspection, and universities.
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Product Description
The Automatic Melt Flow Index Tester is a fully automated solution for measuring Melt Flow Rate (MFR) and Melt Volume Flow Rate (MVR) of thermoplastics. Unlike semi-automatic models, it eliminates manual intervention with automatic weight loading, integrated manual/automatic cutting, and computer connectivity—perfect for high-throughput testing. It operates under strict temperature (up to 500℃ optional) and load control, complying with global standards (GB-T3682-2018, ISO1133:1997, ASTM D1238). Its 304 stainless steel or alloy heating cylinder resists oxidation at high temperatures, ensuring long-term accuracy even with corrosive plastics like full fluoroplastics.
The tester automatically loads 8 grades of weights (0.325kg–21.6kg) and times material extrusion, with a displacement sensor resolution of 0.001mm. This eliminates errors from manual weight handling or timing, boosting test repeatability. The built-in micro printer and RS232/USB ports (optional) let you export data to computers for analysis or reporting.
Its standard temperature range is RT-450℃, with an optional upgrade to 450–500℃—ideal for ultra-high-melt-point plastics like polyarylsulfone. The dual platinum resistance sensors and 2-stage temperature control ensure precise heat distribution (±0.2℃ fluctuation), critical for consistent MVR/MFR results.
It retains last test conditions on startup, so operators don’t re-enter parameters—saving time for frequent testing. A 4-minute countdown after feeding (per national standards) ensures materials fully melt before testing, improving data accuracy. The 7-inch touchscreen simplifies navigation, even for new users.
For manufacturers producing thousands of plastic parts daily (e.g., automotive components, packaging), it tests raw materials in batches to maintain consistent quality, reducing waste from material inconsistencies.
It analyzes polymer resins during production, helping engineers adjust processing parameters (e.g., temperature, pressure) to achieve target MFR values—ensuring resins meet customer specifications.
Researchers use its MVR testing capability to study polymer volume flow under different conditions, supporting innovations in biodegradable plastics or high-performance engineering materials.
Item | Automatic melt flow index tester
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Display method | 7-inch touch screen + connectable computer software |
Heating zone | Multi-stage (2-stage) temperature control method, 2 sets of platinum resistance sensors, 2 heating zone for independent temperature control, high-precision intelligent PID control, the heating slope or heating speed is adjustable, gradient of 0-70mm interval ±1°C |
Test method | MFR+MVR |
Temperature curve display | YES |
Output method | Micro printer or computer software output report |
Die | A standard 2.095mm die |
Weight level | level 8 (0.325㎏、1.2㎏、2.16㎏、3.8㎏、5.0㎏、10.0㎏、12.5kg、21.6k g) |
Weight loading method | Automatically Loaded Weights |
Cutting method | Manual + automatic cutting |
MVR Displacement Accuracy | 0.01mm (different measurement intervals can be set to meet the latest international standards) |
Cleaning mode | Die manual cleaning + barrel manual cleaning |
Items | Melt flow index tester |
Temperature Range | RT-450℃ |
Temperature drift | 4hour， ≤0.5℃ |
Display Device | Touch Screen controlled |
Temperature fluctuation | ± 0.2℃ |
Temperature uniformity of 10mm-70mm above the die | ± 1℃ |
Temperature display resolution | 0.1℃ |
Time display resolution | 0.1S |
Cutting timing range | 1-999S adjustable |
Mouth mold diameter | Φ2.095±0.005mm ( Mouth Radius : 1.05 mm + 0.005 ) |
Discharge hole length | 8.000 ± 0.025mm |
Piston rod diameter | 9.474 ± 0.007mm |
Piston rod length | 6.35 ± 0.13mm |
Loading container diameter | Φ9.550 ± 0.007mm |
Test range | 0.1-150g / 10min |
Farmar precision | ± 0.5% |
Displacement measuring encoder | Omron photoelectric rotary encoder |
Testing scope of mass method | 0.1-150g /10min |
Test range by volumetric method | 50-5000cm³/10min（It can measure up to 5000 cm3/10min by using the plugging die） |
Output way | Micro automatic printout |
Blanking way | Hand automatic cutting can be switched |
Test farmar ( weights) | total 8 grades, 8 sets of weights |
Power supply | AC220V±10% 50HZ |
No. | Name | Unit | Quantity | Remark |
1 | counterweight | Set | 1 | 0.325㎏、1.2㎏、2.16㎏、3.8㎏、5.0㎏、10.0㎏、12.5kg、21.6k g（in a load within） |
2 | counterweight tray | Set | 1 | in a load within |
3 | charging hopper | Set | 1 | |
4 | die cleaning load | Set | 1 | |
5 | loader bar | Set | 1 | |
6 | barrel cleaning load | Set | 1 | assemblies |
7 | rod | Set | 1 | (in a load within） |
8 | die | Set | 1 | |
9 | gauze | Roll | 2 | |
10 | printer paper | Roll | 2 |
