1.Ā PRODUCT INTRODUCTION

Features of Flex TPU 95A

  • Optimal Flexibility and Speed: Balances flexibility with toughness, enhancing 3D printing speeds without compromising quality.
  • User-Friendly Printing: Features low-warp, low-odor properties, and excellent bed adhesion for easy printing.
  • Durable and Reliable: Produces durable, bendable prints capable of supporting substantial weight.
  • Superior Packaging and Compatibility: Comes in moisture-resistant bags with a three-year shelf life, compatible with most FDM 3D printers.
Siraya Tech TPU Flex 95A
Flexible Filament with hardness 95A

2.Ā APPLICATIONS

  • Footwear and Protective Gear: Perfect for crafting durable shoe components and protective cases or pads.
  • Automotive and Medical Devices: Ideal for flexible automotive interiors and customized medical equipment.
  • Robotics: Suitable for producing flexible, tough parts essential in robotic mechanisms.

View more detailed descriptions on theĀ TPU-95A product page.

3.Ā Property Data

Mechanical Properties Measure Method Processed
Tensile Stress at Break (MPa) 32Ā± 3.0 MPa ISO 527 Tested on X/Y axis
Youngā€™s Modulus (MPa) 20 ASTM D638 -
Elongation at Break(%) 500 ASTM D638 Tested on X/Y axis
Toughness (NĀ·mĀ·m^-3) 120 - -
Tensile stress at 100% 9.8 MPa - Tested on X/Y axis
Tensile stress at 200% 12.5 MPa - Tested on X/Y axis
Tensile stress at 300% 17 MPa Tested on X/Y axis

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Other Properties (Method) Measure Method Processed
Vicat softening temperature ā„ƒ 99 ISO 306 -
IZOD Impact (Notched 72F) kJ/m 19.5 D256 -
Shore Hardness 95A ISO 7619 -
Abrasion ResistanceĀ  0.06 D4060 10K cycle
Melting Point (ā„ƒ) 200
Biocompatibility āœ” ISO 10993-5/10/23
Filament Density g/cmĀ³ 1.16 g/cmĀ³ Ā ISO 1183

ISO Biocompatibility Certification:Ā 

Our Flex TPU 85A and 95A filaments have achieved ISO biocompatibility certifications, specifically ISO 10093-5, ISO 10093-10, and ISO 10093-23
View more details on the TPU-95AĀ BiocompatibleĀ Certification page

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4. Preparing for Printing

  • Printer Compatibility: Use FDM printers with direct drive extruders for better filament control. Mount the filament spool directly above the extruder to minimize the path to the extruder, enhancing print quality.
  • Print Bed Preparation: Ensure the print bed is clean and level. Set the heated bed temperature between 20Ā°C and 50Ā°C, adjusting based on your printerā€™s specifications.
  • Dry: To achieve better printing results, please dry the Flex TPU 95A filament at 50Ā°C - 65Ā°C for 4-6 hours in a filament dryer or an oven before printing.

    5. Print setting for FibreheartĀ Flex TPU 95A

    Nozzle TemperatureĀ  200-230Ā°C
    Recommended Nozzle Diameter 0.2mm (The best results: 0.4mm)
    Print Speed 30-120 mm/s (Start at the lower end and gradually increase)
    Retraction speeds 1800-3600 mm/min
    Retraction Distance 1-5 mm (Start with short and slow retraction)
    Build Platform MaterialĀ  PEI or glass with glue stick application
    Cooling Fan On

    6. Moisture Management

    • Storage: Keep the filament in the moisture-resistant aluminum bags provided. For extended storage, use a dry box with desiccant to maintain humidity below 15%.
    • Drying Filament: If you suspect moisture absorption, dry the filament at 50Ā°C - 65Ā°C for 4-6 hours in a filament dryer or an oven.

    7. Troubleshooting Common Issues

    • Stringing

    Tweak retraction settings and adjust print speed. Ensure the filament is dry, as
    moisture can contribute to stringing.

    • Poor Bed Adhesion

    Use a glue stick or hairspray to enhance adhesion. If necessary, increase the bed
    temperature slightly to ensure the filament sticks properly. Sometimes, enclosing the printer can help maintain a consistent temperature, reducing warping.

    • Under-Extrusion

    Check for Blockages: Regularly check and clean the nozzle to prevent blockages that can lead to under-extrusion.


    Adjust Extruder Tension: Make sure the extruder tension is correctly set for flexible materials, which often require different tension settings

    • Poor Detail Resolution

    Reduce Layer Height: For better detail, reduce the layer height. This will allow for finer details to be more apparent in the print.


    Adjust Speed for Complex Parts: Slow down the print speed when printing intricate parts or details to allow more time for the filament to deposit accurately.

    8.Ā Contact US

    If you have any questions, please feel free to contact our support at support@siraya.tech.

    You can also post in the Siraya Tech Facebook user group, where many enthusiastic and experienced experts will also help you. We will also reply to the post, which can also help other printers with the same problem.

    Download PDF version ofĀ TPU Flex 95AĀ TDS.