Polymaker PolyFlex TPU90 750g 1.75mm Filament

Flexible and durable TPU featuring UV resistance, ISO10993 certification and 90A Shore hardness

• Flexible Polymaker TPU with 90A shore hardness.
• Excellent UV resistance, durability and impact resistance.
• Certified with ISO10993
• Elongation at break over 585%.
• Formulated for wide printer compatibility.
• Consistent colour and tolerance (1.75mm diameter +/- 0.03mm)

PolyFlex™ TPU90, created from Covestro’s Addigy®️ family, is a thermoplastic polyurethane (TPU) based filament and provides the perfect solution for applications where high flexibility and durability are required. With a shore hardness of 90A and an elongation to break of 585%, PolyFlex™ TPU90 is designed to provide excellent flexibility while still being printable. This grade of TPU90 also has the ability to resist ultra-violet (UV) light or sunlight and is certified with ISO10993 allowing it to be used a selection of medical and skin contact devices.

Features

Flexible & Durable – PolyFlex™ TPU90 features a “Shore A” hardness of 90A, enabling production of softer parts in comparison to PolyFlex™ TPU95. Thanks to 3D printing, a model can also be made more or less flexible depending on its design and infill.

ISO 10993 - PolyFlex™ TPU90 has been tested certified in accordance with ISO10993-5, ISO10993-10, ISO10993-11 and ISO10993-23 standards enabling a range of uses for 3D printed skin contact devices.

UV Resistance - Ultraviolet (UV) light is probably the most damaging environment for plastics. All applications of plastics which are used outdoors are therefore at risk, from roofing and window frames to vehicles, PolyFlex™ TPU90 offers excellent UV resistance so that the appearance and mechanical properties of your 3D prints are not influenced negatively by UV light.

Wear & Tear Resistance – Featuring an elongation at break result of over 585% combined with excellent wear, tear and impact resistance; PolyFlex™ TPU90 is an extremely durable choice for 3D printing custom over grips, vibration dampeners, footwear, phone cases and end use products.

Formulated For 3D Printing - Using Covestro’s Addigy® family as its base material, PolyFlex™ TPU90 is specifically engineered for 3D printing to combine durability, flexibility and UV resistance. PolyFlex™ TPU90 delivers a soft and flexible 3D printing filament that is compatible with a wide range of desktop FDM/FFF 3D printers.

Uncompromised Quality - Polymakers leading quality control process and rigorous in-house testing ensure reliable printing and consistency across spools and batches.

Printing Settings

The above are printing recommendations based on 0.4 mm nozzle. Success with smaller nozzles are more experimental with flexibles due to higher back-pressure in the nozzle. Larger nozzle sizes can reduce back-pressure in the nozzle but depending on the layer width & layer height we recommend higher extrusion temperatures or slower printing speeds.

For other tips printing PolyFlex™ TPU90, contact us!

Storage & Drying:

All plastics are hygroscopic meaning they absorb moisture from the air which can affect printing quality and strength of printed parts. How quickly this absorption occurs depends on the material and your environment. PolyFlex™ TPU90 filaments are dried and packaged in a vacuum sealed bag with desiccant to ensure the best printing quality. When not in use PolyFlex™ TPU90 should be stored away from sunlight and sealed in the packaged resealable bag.

Although filaments can be dried, drying will speed up the aging process of the plastic. Preventing the filament from absorbing moisture in the first place is the best solution to keep your filament working to its maximum potential. For long term storage we highly recommend storing in a sealed container with dry desiccant that reduces the relative humidity to 10-20% RH.

In-house we manage our filaments with Polymakers PolyDryer™ which keep offers best-in-class sealing to protect filaments from absorbing moisture 

If you hear popping sounds and notice that the surface quality of your print is uneven or the colour is not consistent, this is a likely indicator that the filament has absorbed too much moisture. Spools of PolyFlex™ TPU90 can be dried with Polymaker PolyDryer™ using power level 2. Alternatively if you have a convection oven that is accurate at low temperatures, users can dry filament in a preheated convection oven at 70˚C for up to 8 hours. Results may vary depending on the accuracy of your oven so please be conservative. For more information about filament drying please read our user guide.

Specification

Technical Data

All testing specimens were printed under the following conditions: Nozzle Temperature = 210˚C, printing speed = 45 mm/s, build plate temperature = 50˚C, infil = 100%, extrusion multiplier = 120%
All specimens were conditioned at room temperature for 24h prior to testing.

MECHANICAL PROPERTIES

We have full safety data sheets and technical data sheets for PolyFlex™ TPU90 and all other Polymaker products. Contact us to enquire!

The typical values presented in Polymakers data sheet are intended for reference and comparison purposes only. Due to the nature of 3D printing they should not be used for design specifications or quality control purposes.

Compatibility

PolyFlex™ TPU90 has been engineered with compatibility in mind to print excellently on a wide range of 3D printers. With some extruder set ups a larger nozzle (0.5mm or 0.6mm) may be recommended to reduce pressure in the nozzle and improve extrusion consistency.

Flexible filaments tend to have more specific feeding requirements so it is recommended to make sure your filament guide system is smooth and with minimal bends to reduce drag. Any unnecessary drag can result in under extrusion so we also recommend bypassing features that apply pressure to the filament such as mechanical filament detection switches. or users who operate a 3D printer with an optical filament detection switch, please note that optical filament detection switches will not detect clear, transparent or semi-translucent filaments. On these machines the optical detection switch will need to be disabled to print with such colours.

Of course with thousands of unique 3d printer models on the market, we can't guarantee each filament type will work with every 3D printer. Slicer experience and setting adjustment is always required to get the most out of a material. Before jumping into an ambitious project we always recommend printing some known calibration tests to build or make adjustments to the filament profile.

FAQ

Q: Can PolyFlex™ TPU90 be printed at large scales without warping?
A: PolyFlex™ TPU90 offers excellent dimensional stability and can certainly be printed at large scales without warping. Please note while we haven't experienced warping with PolyFlex™ TPU90; we recommend a consistent room temperature as printing in a cold environment or with poor first layer adhesion can cause any material to warp. Using Magigoo Flex can improve the adhesion of PolyFlex™ TPU90 to the build plate.

Q: What support materials can I use with this product?
A: Polymaker’s PolyDissolve™ S1 filament is the recommended support filament for PolyFlex™ TPU90. If your 3D printer is not equipped for multi-material, self-support can be used however support removal will be difficult.

Don't know where to start? Or which filament will suit your application? We have a broad range of support options including telephone support. Contact us today!

TPU (Thermoplastic polyurethane) is a flexible 3D printing material. One way to indicate the flexibility and softness of the filament is by looking at the Shore hardness. PolyFlex™ TPU90 displays a shore hardness of 90A, softer and more flexible than grades of 95A.

• Excellent flexibility and durability.
• Excellent UV resistance.
• Excellent impact resistance and resistance to wear.
• High elongation at break over 585%.
• Minimal printing requirements when compared to other flexible filaments.
• Improved flow behaviour in comparison to some other TPU90 grades.
• Exhibits excellent dimensional stability.
• Using Covestro’s Addigy® family as its base material, Polymaker has engineered and optimised PolyFlex™ TPU90 specifically for 3D printing.