Jiubin JB-400H High-Flow Polypropylene (PP) Melt Flow Indexer
| Brand | Jiubin Instruments |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Region of Manufacture | Domestic (China) |
| Model | JB-400H |
| Pricing | Available Upon Request |
Overview
The Jiubin JB-400H High-Flow Polypropylene (PP) Melt Flow Indexer is a precision-controlled, gravimetric melt flow rate (MFR) testing instrument engineered for the rapid and reproducible determination of melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastic polymers—particularly high-flow polypropylene grades used in injection molding, fiber spinning, and automotive lightweighting applications. It operates in strict compliance with ISO 1133-1 (2019), ASTM D1238 (2022), and GB/T 3682.1–2018, utilizing a standardized piston-driven extrusion principle under controlled temperature and load conditions. The instrument features a robust heating block with ±0.2 °C thermal stability across the 150–300 °C operating range, optimized for PP resins with MFR values exceeding 30 g/10 min (e.g., 35–100 g/10 min at 230 °C/2.16 kg). Its design emphasizes operator safety, measurement repeatability (<1.5% RSD per ISO 1133 Annex C), and long-term calibration traceability to NIST-traceable reference materials.
Key Features
- High-temperature heating system with PID-controlled aluminum alloy barrel (150–300 °C), capable of maintaining ±0.2 °C uniformity over 30 min dwell time
- Dual-load configuration: standard 2.16 kg and optional 5.00 kg or 21.6 kg weights for extended MFR range coverage
- Motorized piston lift and automatic timing initiation triggered by preset displacement threshold (e.g., 10 mm)
- Integrated digital timer with millisecond resolution and auto-stop function upon completion of extrusion cycle
- Ergonomic, corrosion-resistant stainless-steel die assembly (2.095 ± 0.005 mm diameter, 8.000 ± 0.025 mm length) compliant with ISO 1133 Annex A
- Optional MVR mode enabled via calibrated piston displacement sensor (resolution: 0.01 mm) and volumetric calculation algorithm
- CE-marked electrical architecture with dual thermal cutoffs and overtemperature lockout
Sample Compatibility & Compliance
The JB-400H accommodates granular, pelletized, or flake-form thermoplastics including polypropylene (PP), polyethylene (PE), polystyrene (PS), ABS, and certain engineering thermoplastics (e.g., POM, PA6) with nominal MFR values from 0.1 to 100 g/10 min. It supports both single-point and multi-load MFR determinations required for rheological fingerprinting in QC/QA labs. All test procedures align with ISO/IEC 17025:2017 method validation requirements. The instrument’s mechanical and thermal performance is verified using certified reference materials (CRMs) traceable to BAM (Germany) or NIST SRM 2890. Documentation includes full calibration certificate, traceable weight set (Class M1), and die verification report—supporting GLP-compliant audit readiness and FDA 21 CFR Part 11–aligned data integrity workflows when paired with validated software.
Software & Data Management
While the JB-400H operates as a standalone benchtop unit, it integrates seamlessly with Jiubin’s optional MFI-Link v3.2 software (Windows 10/11 compatible) for automated data capture, statistical analysis (mean, SD, CV%, confidence intervals), and PDF report generation. The software enforces electronic signatures, audit trails, and user role-based access control (administrator/operator), satisfying ALCOA+ principles for regulated environments. Raw timing and mass data are stored in encrypted SQLite databases with immutable timestamps and operator ID logging. Export formats include CSV, Excel (.xlsx), and XML for LIMS integration. All firmware updates undergo version-controlled release testing and are documented per IEC 62304 Class B software lifecycle standards.
Applications
This indexer serves critical functions across polymer R&D, production QA, and third-party certification laboratories. Typical use cases include batch-to-batch consistency verification of high-fluidity PP copolymers for automotive interior trim; MFR correlation studies against rheological parameters (e.g., zero-shear viscosity) for process modeling; incoming raw material inspection per supplier technical agreements; and regulatory submission support for medical-grade polypropylene (ISO 10993-12, USP ) and food-contact resins (FDA 21 CFR 177.1520). Its reliability has been validated in academic settings—including polymer processing labs at Tsinghua University, Shanghai Jiao Tong University, and the Chinese Academy of Sciences—as well as industrial sites such as BYD, Geely, and Kangmei Pharmaceutical.
FAQ
Does the JB-400H comply with ASTM D1238 Condition L (230 °C / 2.16 kg) for PP?
Yes—it is factory-configured and verified for ASTM D1238 Condition L, with thermal uniformity and die geometry certified per the standard’s Annex B requirements.
Can it measure MVR without manual cutting and weighing?
Yes—when equipped with the optional displacement sensor module, the instrument calculates MVR directly from piston travel velocity and die geometry.
Is calibration documentation provided with shipment?
Yes—each unit ships with a full calibration certificate covering temperature, load, die dimensions, and timer accuracy, all traceable to national metrology institutes.
What maintenance is required for long-term accuracy?
Quarterly verification using CRM materials and annual recalibration of temperature sensors and load cells are recommended per ISO 17025 Clause 6.4.
Is the die interchangeable with other ISO-compliant indexers?
Yes—the 2.095 mm die conforms to ISO 1133 geometric tolerances and is mechanically compatible with most Class A melt indexers from Instron, Ceast, and Tinius Olsen.
