Jiubin JB-400H Polypropylene Melt Flow Indexer
| Brand | Jiubin |
|---|---|
| Origin | Shanghai, China |
| Model | JB-400H |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestic (China) |
| Pricing | Available Upon Request |
Overview
The Jiubin JB-400H Polypropylene Melt Flow Indexer is a precision-controlled thermal extrusion instrument engineered for standardized determination of melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastic polymers—primarily polypropylene (PP), polyethylene (PE), and other ASTM D1238- and ISO 1133-compliant resins. Operating on the principle of gravity-driven piston extrusion through a calibrated die under specified temperature and load conditions, the JB-400H delivers repeatable, traceable flow index data essential for raw material qualification, process consistency validation, and QC/QA release testing in nonwoven, fiber, and injection molding applications—including melt-blown fabric production for filtration media and medical-grade PPE.
Key Features
- Microprocessor-controlled temperature regulation with ±0.2 °C stability across 150–300 °C operating range, compliant with ISO 1133-1 Annex A requirements for thermal uniformity.
- Load application system supporting standard test weights (e.g., 2.16 kg, 5.00 kg, 10.00 kg) with mechanical loading mechanism verified per ASTM D1238 Annex B for force accuracy.
- Digital timer with 0.1 s resolution and automatic cut-off logic to minimize operator-induced timing variance during extrudate collection.
- Stainless-steel barrel and die assembly (L/D = 30:1, die orifice Ø 2.095 mm ± 0.005 mm) conforming to ISO 1133 dimensional tolerances.
- Integrated purge port and removable die holder facilitating rapid resin changeover and residue removal without disassembly.
- Compliance-ready design: supports GLP documentation workflows via manual logbook integration; compatible with external balance calibration records (ISO/IEC 17025 traceable).
Sample Compatibility & Compliance
The JB-400H is validated for use with homopolymer and copolymer PP grades used in melt-blown nonwovens, including high-MI (≥1000 g/10 min) and low-MI (≤30 g/10 min) formulations. It accommodates pellet, granule, and flake forms within 3–5 mm nominal size. Test methods align with ISO 1133-1 (MFR/MVR), ASTM D1238 (Condition L, M, N, O), GB/T 3682.1–2018 (Chinese national standard), and USP viscosity-related polymer characterization protocols. Instrument verification follows manufacturer-specified procedures for temperature calibration (using certified Pt100 probe), die dimension inspection (optical comparator), and load verification (NIST-traceable deadweight set).
Software & Data Management
The JB-400H operates as a standalone benchtop unit with no embedded software or network interface. All measurement data—including test temperature, applied load, extrusion time, cut weight, and calculated MFR/MVR—are recorded manually in laboratory notebooks or exported into LIMS-compatible spreadsheets. The device meets FDA 21 CFR Part 11 foundational requirements for audit trail integrity when paired with controlled documentation practices: dated entries, dual-signature review, and retention of raw timing/cut-weight values. Optional third-party digital logging modules (not supplied by Jiubin) may be integrated for automated data capture, provided they undergo site-specific validation per ICH Q9 and GAMP5 guidelines.
Applications
- QC screening of PP feedstock for melt-blown line qualification—correlating MFR with fiber diameter consistency and web tensile strength.
- Batch-to-batch comparison of stabilizer-modified PP grades to assess thermal degradation impact on flow behavior.
- Supporting R&D studies on shear-thinning response of nanocomposite PP melts under standardized shear rates (e.g., 10–1000 s⁻¹ derived from piston speed and die geometry).
- Regulatory submission support for medical device manufacturers requiring ISO 13485-aligned material specifications (e.g., surgical mask filter layers).
- Academic polymer processing research at institutions including Tsinghua University, Shanghai Jiao Tong University, and the Chinese Academy of Sciences (Guangzhou Branch).
FAQ
What standards does the JB-400H comply with?
It supports test execution per ISO 1133-1, ASTM D1238, GB/T 3682.1, and related regional specifications for thermoplastic melt index determination.
Is the instrument suitable for high-MI polypropylene used in melt-blown production?
Yes—calibrated operation up to 1500 g/10 min (at 230 °C / 2.16 kg) enables reliable assessment of ultra-high-fluidity PP grades critical for fine-fiber formation.
Does it include automated data export or USB connectivity?
No—the JB-400H is a manually operated, analog-timer-based instrument. Data recording requires external documentation per laboratory SOPs.
Can the die be replaced with alternative orifices for specialized testing?
The standard die (Ø 2.095 mm) is fixed per ISO 1133; optional dies (e.g., Ø 1.18 mm for PE) are available as accessories but require full recalibration and method revalidation.
What maintenance is required to ensure long-term measurement fidelity?
Daily purging with HDPE, quarterly die bore inspection using optical gauging, annual temperature sensor calibration against reference thermometer, and biannual load verification with certified masses.
