Aflow Extrusion PlastometerThe fully automatic all-rounder Download
- Multi-stage test
- 24/7 operation in QA
- Flexible in R&D
- Method A
- Method B
- Method C
- Method D
The Aflow is noted for being highly automated: Whether simple cleaning and defined pre-compaction at the press of a button, or infinitely settable test loads, the Aflow extrusion plastometer adapts to your test tasks.
The Aflow was developed specifically for laboratories with high test volumes; this is reflected in its robust design and convenient operation. The instrument supports all established worldwide standards and procedures, including ISO 1133 and ASTM D1238. The Aflow can be used to determine melt mass flow rate (MFR) and melt volume flow rate (MVR) to Methods A, B, C and D.
Optimum test sequence - time-saving and operator-friendly
The pneumatic pre-compaction feature allows the polymer to be defined and evenly pre-compacted at the press of a button—saving time and effort. To further accelerate the test procedure after the test, it is possible to eject the remaining material from the extrusion barrel with a force of up to 80 kg and then clean it with a pneumatic cleaning device at the press of a button.
Flexibility due to stepless test load up to 50 kg
Test loads in the Aflow can be adjusted steplessly from 0.325 kg to 50 kg. Through presettings in the software, a multi-stage test to Method D can be effortlessly performed. Therefore, several tests with different weight stages can be carried out with a single barrel filling.
Speed, operator-independence and high test-result reproducibility and repeatability – all these things matter in research and development and in 24-hour operation, as in production control.
A defining feature of Aflow is its high level of automation - easy cleaning and defined pre-compacting at the touch of a button, stepless test-load settings - Aflow adapts to your testing requirements.
Aflow can be operated in stand-alone mode via a modern touch display or on a PC with ZwickRoell testing software.
The basic version of the Aflow extrusion plastometer is designed to perform MFR and MVR tests in accordance with Methods A, B, C and D. This can be done using an automatic extrudate cutter and balance. Tests can be performed in accordance with the following standards:
- ISO 1133, ASTM D1238, ASTM D3364, JIS K 7210.
Aflow's pneumatic cleaning device enables cleaning and pre-compacting to be performed at a preset pressure. The Clean and Pre-compact option allows variable adjustment of the cleaning and pre-compacting pressure, while a switch on the cleaning unit allows one of the two pressure steps to be selected.
Intuitive and workflow oriented touch operation
- The new standardized operating philosophy allows the operator to move easily between the instrument and the PC.
- All test-related settings are grouped logically and are separated from higher-level system settings. The operator is guided through the test configuration step by step. The saved test configuration can be easily exported and transferred to other instruments.
- Integrated user management reduces the number of operator input options to a minimum. Users see only what is important to them so they can focus on the task at hand right from the start.
- The MVR is shown live in graphic form, in both stand-alone mode and in the ZwickRoell testing software. This allows both melting process and behavior to be followed precisely during measurement.
Space savings when testing with multiple instruments
In labs with multiple instruments, testXpert III makes it possible to configure and control up to six Aflow and/or Mflow extrusion plastometers with one PC. Central operation and the saving of results from a single workplace is rational and affords a quick overview of all tests currently in progress. For a clear overview of operations, we recommend using two monitors.
The benefits of operating an extrusion plastometer with testXpert III are:
- Automatic bubble detection that prevents measurement errors caused by air inclusions by detecting them in the plastic melt
- Live display of the melt volume rate that follows the progress of melting and the behavior during measurement and graphically or numerically displays the test piston speed when the test starts in cm³ per 10 min. or in g per 10 min. when the melt density is preselected
requires dry, oiled air
|Type||Aflow extrusion plastometer (230 V)||Aflow extrusion plastometer (110 V)|
|Test load||0.325 ... 50 (step by step or stepless)||0.325 ... 50 (step by step or stepless)||kg|
|Compressed air, oiled, dry||5 ... 10||5 ... 10||bar|
|Test temperature||+50 ... +450||+50 ... +450||°C|
|Display||Capacitive touch display||Capacitive touch display|
|Resolution of the temperature display||<0.001||<0.001||K|
|Number of savable parameter sets||> 100||> 100|
|Temperature accuracy in the range of 0 ... 75 mm above the die in the temperature range of 50 °C ... 450 °C||<0.31||<0.31||K|
|Error limit (Method A)||±0.02 (with automated extrudate cutter)||±0.02 (with automated extrudate cutter)||s|
|Error limit (Method B)||± 0.01||± 0.01||s|
|Error limit (Method B)||±0.02 mm (ISO 1133) / ±0.4% of 6.25 mm (ASTM D1238)||±0.02 mm (ISO 1133) / ±0.4% of 6.25 mm (ASTM D1238)|
|Piston speed, max.||20002||20002||mm/min|
|Multi-instrument operation on one PC:|
|Available main memory, min.||1.54||1.54||GB|
|Connectible Aflow extrusion plastometer per PC||6||6|
|Scope of delivery|
|Power input specifications|
|Power supply||220 to 240 V, 1L/PE/N||100 to 127 V, 1L/PE/N|
|Power consumption (full load), approx.||0.6||0.6||kVA|
- Spatial and temporal, to ISO 1133-2
- To ensure proper force control, the piston speed cannot exceed 75% of this value
At least one piston must be selected, in accordance with the materials to be tested. Various plastics (e.g. PTFE and PFA) which contain fluorine release hydrofluoric acid, which attacks the extrusion barrel material. For these plastics pistons made of a special steel alloy are used. These pistons have only limited suitability for filled plastics. For these the wear-resistant version is recommended. For tests to ISO 1133-1997, a piston with non-rounded edges (sharp-edged) is required.
|Test material||Standard||Properties||Item No.|
|Plastic, fluorine-free||ISO 1133||Wear-resistant||032298|
|Plastic, containing fluorine||ISO 1133||Acid-resistant||032299|
|Plastic, not containing fluorine||ISO 1133-1997||Sharp edged, wear-resistant||032300|
|Plastic, not containing fluorine||ASTM D1238||Wear-resistant||1015333|
An extrusion barrel must be chosen to suit the materials to be tested. Different plastics containing fluoride, such as PTFE and PFA, release hydrofluoric acid, which corrodes the material of the extrusion barrel. For these types of plastics, extrusion barrels made from a special type of steel alloy are used.
|Test material||Diameter, inner|
|Plastic, not containing fluorine||9.55||Finely honed||Wear-resistant||050888|
|Plastic, containing fluorine / not containing fluorine||9.55||Finely honed||Acid-resistant, wear-resistant||1069372|
Extrudate cutter and die plug
The manual extrudate cutter is recommended for cutting intervals greater than one minute. For short cutting intervals use of the automatic extrudate cutter is recommended in order to obtain precisely timed cuts. The die plug prevents premature flow of the material when testing plastics with high flow rates (> 10 cm3/10 min. at a load of 0.375 kg). When using the die plug, you must use the extrudate cutter in order to eject the die plug automatically when the test begins.