Product Introduction

Core Product Advantages

1. Dual Test Modes (MFR + MVR) Integrated Design
   Supports two standard test workflows in one single machine:

• MFR Mass Method: Cut extruded melt strands at fixed intervals, weigh samples to calculate g/10min index
• MVR Volume Method: High-resolution displacement sensor tracks piston travel to automatically compute volume flow value without repeated weighing

  One machine meets all standard testing requirements for different plastic production quality control.

  2.High-Stability Dual-Sensor Constant Temperature System

  Two independent temperature sensing probes monitor heating barrel temperature synchronously, temperature fluctuation controlled within ±0.2℃, display resolution up to 0.1℃. Adjustable heating range covers 50℃ to 450℃, compatible with low-melting PP/PE and high-temperature PC, PA, fluoroplastic without local overheating degradation. Fast temperature recovery after specimen feeding shortens batch testing waiting time.

2. Complete Set Calibrated Standard Weights
   8 grades of matched counterweights ranging from 0.325kg to 21.6kg, each weight undergoes factory precision calibration with tolerance ≤±0.5%. Covers all load requirements specified by international plastic testing standards, no extra custom weights needed for different resin varieties.
3. Premium Wear-Resistant Extrusion Core Components
   Heating barrel adopts high-temperature resistant alloy material; standard tungsten carbide capillary die holds strict dimensional tolerance (Φ2.095±0.005mm inner bore, 8.000mm length). Piston rod and inner cylinder are precisely machined to eliminate dimensional deviation that causes flow data distortion, long service life for continuous daily QC testing.
4. LCD Digital Control + Dual Data Output Modes
   Intuitive multi-function LCD operation panel with dedicated function keys (Run/Stop/Timer/Print). Built-in thermal printer outputs instant test slips; optional desktop computer connection enables curve storage, batch data sorting and editable report export, realizing digital traceable archives for long-term quality filing.
5. Manual & Automatic Dual Cutting Mechanism
   Red aluminum alloy motorized cutting assembly as standard configuration, users can switch between auto timed cutting and manual hand slicing according test batch volume. Timing interval adjustable from 1–999s, effectively reduce human operation error for parallel sample groups.

Full Standard Technical Parameter Sheet

Standard Complete Test Operating Steps

1. Preheating & Test Parameter Setup
   Power on the instrument, set target barrel temperature and cutting timing on LCD panel, wait 15–30 minutes for temperature to stabilize evenly inside heating cylinder.
2. Dried Sample Feeding
   Pour fully dried plastic pellets into the barrel cavity, insert piston rod and install matched calibrated counterweight stack on piston top.
3. Thermal Soaking Period
   Stand by for material complete melting according standard soaking time to guarantee uniform molten state without incomplete plasticization.
4. Extrusion & Specimen Cutting
   Start test program; molten plastic flows out from die opening. Use auto cutter or manual tool to slice extruded strands at preset time intervals.
5. Flow Index Calculation

• MFR Mode: Collect cut samples, weigh average mass, machine auto compute g/10min melt flow value
• MVR Mode: Displacement sensor records piston moving distance, system auto calculate volume flow result

6. Report Output & Post-Test Cleaning
   Trigger print function to generate test record; after cooling barrel fully, disassemble die and piston to clear residual plastic melt for next batch testing.

Wide Industrial Application Scenarios

Petrochemical Virgin Resin Factories

Modified Plastic & Masterbatch Manufacturers

Engineering Plastic R&D Labs

Wire & Cable Material Workshops

Biodegradable Material Enterprises

University & Third-Party Testing Institutions

Standard Factory Full Delivery Kit

1. KR-701B bench melt flow tester main machine
2. Alloy heating barrel + tungsten carbide standard die & piston assembly
3. Full set of 8 grades factory calibrated test counterweights
4. Motorized automatic cutting mechanism + manual auxiliary cutter
5. LCD digital control panel with built-in thermal printer
6. Complete PC connection data analysis software (desktop computer optional)
7. Barrel, die disassembly cleaning tools and storage toolbox
8. Multilingual operation manual matching ISO & GB plastic test standards
9. Factory temperature & load metrology calibration certificate

Global Distributor & After-Sales Support

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