PolyFlex™ TPU90
PolyFlex™ TPU90, created from Covestro’s Addigy®️ family, is a thermoplastic polyurethane (TPU) based filament designed to provide great flexibility without compromising on printing speed.
Nozzle temperature
210 – 230 (℃)
Build surface treatment
PC and Texture PEI (Glue when needed)
Build plate temperature
25 - 60 (˚C)
Cooling fan
ON
Printing speed
30 – 70 (mm/s)
Retraction distance
3 - 6 (mm)
Retraction speed
40 - 60 (mm/s)
Closure Chamber
No Needed
Recommended support material
PolySupport™ and PolyDissolve™ S1
Drying setting
70˚C for 8h
Print Tips
This material can be printed on most printers, but it is highly recommended you use a direct extruder setup and not Bowden.
The further the gap between your extruder and hotend, the more difficult this material will be to print.
Print slow, and even slower if your extruder has a distance between itself and the hotend. 30mm/s - 60mm/s.
Keep your cooling fan on for good surface quality.
This material has amazing layer adhesion which will make using parent support material very difficult. It is suggested you design your part to not need support material as much as possible.
TPU is known for being stringy, so it is going to be difficult to get rid of all of the stringiness/hair on the print.
90 refers to it's shore hardness of 90A.
FAQ
Can my printer print PolyFlex™ TPU90?
We highly recommend to use a direct drive printer to print PolyFlex™ TPU90. A direct drive printer is a printer with the extruder mounted on top of the hot end.
What makes PolyFlex™ TPU90 unique?
PolyFlex™ TPU90 is easier to print than similar flexible material thank to its high melt index.
What does the number stand for?
The number next to "TPU" refers to the shore hardness. A higher number means a harder material. TPU90 is our softest, followed by TPU95 and then TPU95-HF (which is closer to a shore hardness of 98A than 95A).
In 3D printing the shore hardness is only an indication on how flexible the printed part will be. However it is important to also take in consideration the infill percentage, number of walls, top/bottom layers and the layer height.
Do you have any suggestions when printing TPU90 with support structure on single extruder printer?
Generally, when printing with TPU materials, if support structures are needed, we recommend using specialized support materials such as PolyDissolve™ S1. However, considering the single extruder devices that users may have, we suggest customers adjust the orientation of the model to minimize the use of support structures, or place support structures in inconspicuous areas that won't affect the appearance.
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