SISCO melt flow indexer is designed for accurate measurement of Melt Flow Index (MFI) and Melt Flow Rate (MFR) of thermoplastic materials under controlled temperature and load conditions.melt flow index tester is compact in design and easy to operate. This melt flow indexer is an ideal solution for plastics manufacturers, testing laboratories, research institutes, and quality control departments seeking accurate, repeatable, and efficient melt flow measurements.

Equipped with High-Resolution Color LCD Display

Built-In Micro Thermal Printer
SISCO melt flow indexer is mainly used in the plastics and polymer industry to measure the melt flow properties of thermoplastic materials. It is widely applied in plastic manufacturing, raw material quality control, polymer R&D laboratories, injection molding and extrusion processing plants, and plastic recycling industries to ensure material consistency, processing stability, and product quality.
Plastic Recycling Industry
Polymer R&D Laboratory
Injection Molding
Plastic ManufacturingÂ
| Model | SISCO-MFI-JY-0039 |
| Barrel Inner Diameter | 9.5504±0.0076 mm |
| Barrel Length | 162 mm |
| Die Orifice Diameter | 2.0955±0.0051 mm |
| Die Orifice Length | 8±0.025 mm |
| Plunger Diameter | 9.4742±0.0076 mm |
| Plunger Length | 6.35±0.13 mm |
| Barrel Outer Diameter, Sensor Hole, Surface Finish & Hardness | Fully ASTM D1238 compliant for consistent performance |
| Temperature Control Accuracy | ±0.1°C–Stable and repeatable test results |
| Timing Accuracy | 1 second–Reliable measurement for MFI/MFR data |
| Test Load | Full load 10 kg–Suitable for a wide range of thermoplastics |
| Die Material | Tungsten carbide–Matches barrel for consistent material flow |
| Power Supply | AC 220V ±10%, 50Hz–Standard, easy to use |
| External Dimensions | 36*510*600 mm–Compact and space-efficient |
| Weight | 40kg |
Q1:Â What does a melt flow indexer measure?
A1: A melt flow indexer measures the Melt Flow Index (MFI), also known as Melt Mass-Flow Rate (MFR), which indicates how easily a thermoplastic material flows when melted under a specified temperature and load. The result reflects the material's viscosity and molecular weight consistency, and is commonly expressed in grams per 10 minutes (g/10 min) according to standard test methods such as ASTM D1238 and ISO 1133.
Q2: Why is melt flow indexer important?
A2: A melt flow indexer is important because it provides a quick and reliable indication of a plastic material's flow behavior, which directly affects processing and product quality. By measuring the Melt Flow Index, manufacturers can control raw material quality, ensure batch-to-batch consistency, select suitable materials for injection molding or extrusion, detect material degradation, and maintain stable production processes, all in accordance with standards such as ASTM D1238 and ISO 1133.
Q3: What materials can be tested with a melt flow indexer?
A3: A melt flow indexer can be used to test thermoplastic materials that soften and flow when heated. Common test materials include polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS, polyethylene terephthalate (PET), nylon (PA), and polycarbonate (PC), as well as other engineering plastics and recycled polymers used in injection molding, extrusion, and blow molding processes.
Tips: Can a melt flow indexer be used for recycled plastics?
Yes, a melt flow indexer is widely used for recycled plastics and plays an important role in quality control and material evaluation. Recycled polymers often experience thermal and mechanical degradation during repeated processing, which can change their molecular weight and directly affect melt flow behavior. By measuring the Melt Flow Index, manufacturers can identify these changes and assess the stability of recycled materials.
The melt flow index tester allows users to compare recycled resins with virgin materials, monitor batch-to-batch consistency, and determine whether recycled plastics meet the processing requirements for injection molding, extrusion, or blow molding. It is also useful for evaluating the effects of contamination, additives, fillers, or reprocessing conditions on material flow performance. As a result, the Melt Flow Indexer is an essential tool for plastic recycling plants, material laboratories, and manufacturers aiming to ensure reliable processing, consistent product quality, and sustainable material reuse.
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SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.