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This melt flow indexer tests MFR/MVR of plastic and rubber in viscous flow. It has a 304 stainless steel heating cylinder (RT-400℃, optional 500℃), dual sensors for temp precision, and 8 weight grades (0.325-21.6kg). Compliant with GB/T3682 and ASTM D1238, it resists corrosion from fluoroplastics. Key-stroke control simplifies operation, and a micro printer outputs data. Ideal for petrochemicals, plastic processing, and research institutes evaluating material processability.
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Product Description
Items | Melt Flow Indexer |
Temperature Range | RT-400℃ |
Temperature drift | 4hour， ≤0.5℃ |
Display Device | Keystroke controlled |
Temperature fluctuation | ± 0.5℃ |
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、21.6kg（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 |
The Melt Flow Indexer for Plastic And Rubber is a specialized instrument for measuring MFR (mass flow rate) and MVR (volume flow rate) of both thermoplastics and rubber compounds. Unlike plastic-only testers, it’s engineered to handle rubber’s unique viscous flow properties, making it a one-stop solution for mixed-material labs. It features a corrosion-resistant heating cylinder (304 stainless steel or alloy) and dual sensors, ensuring accuracy even after long-term testing of strong corrosive materials (e.g., fluoroplastics). Its keystroke control design is intuitive for operators, with clear displays and simple parameter adjustments.
It tests high-temperature plastics (polycarbonate, nylon) and rubber compounds, with a test range of 0.1–150g/10min (MFR) and 50–5000cm³/10min (MVR). The standard 2.095mm die (tungsten carbon steel) and 9.474mm piston rod ensure compliance with global standards, so results are comparable across labs.
It operates at RT-400℃, with a temperature drift of ≤0.5℃ over 4 hours and ±0.5℃ fluctuation. The 10mm–70mm zone above the die has ±1℃ uniformity, preventing uneven melting that distorts MFR values. The dual sensors also extend the instrument’s lifespan by reducing wear on single-sensor systems.
A 4-minute countdown after feeding (per national standards) ensures materials fully liquefy, while the keystroke control panel lets operators quickly switch between manual and automatic cutting. It retains last test settings on startup, reducing repetitive work for frequent testing. The built-in micro printer outputs results instantly, no computer needed.
For companies making rubber-plastic composites (e.g., gaskets, seals), it tests both raw materials to ensure compatibility and consistent flow during molding—preventing defects like uneven bonding.
It analyzes rubber compounds used in tires, measuring how flow properties affect extrusion (e.g., tread formation). This ensures tires meet safety standards for durability and performance.
Inspectors use it to verify plastic and rubber materials from suppliers, ensuring they meet contract specifications (e.g., MFR for plastic pipes, flow rate for rubber hoses).
Yes. For rubber, it tests molten flow under controlled heat/load (like plastics), while for solid rubber, it can be paired with optional accessories to measure flow properties during vulcanization (ask our team for details).
Keystroke control is more durable in dusty or high-humidity environments (e.g., rubber factories), where touchscreens might malfunction. It’s also easier to operate with gloves, common in industrial settings.
With proper cleaning (using the included die cleaning tools), the tungsten carbon steel die and piston rod last 1–2 years for regular use. We recommend inspecting them quarterly for wear (e.g., scratches, deformation).
