eFil TPU 90A belongs to the eFil family of flexible filaments based on TPU plastic. Its Shore A hardness is 90A , which combines a high degree of flexibility with ease of printing . Furthermore, different hardness levels can be achieved by varying the infill percentage during 3D printing. A hardness of 90A can reach 470% elongation and is the type found, for example, in the rubber sole of a work boot. Its tensile strength reaches 35 MPa and its impact resistance is 126 N/mm.

The eFil TPU 90A boasts excellent chemical resistance to both acids and bases, as well as a wide variety of solvents. It also offers exceptional resistance to abrasion, impacts, and punctures , and can withstand temperatures up to 100°C. Furthermore, it features strong adhesion , eliminating warping issues during printing, even without a heated bed or other bonding methods. This high adhesion ensures a perfect bond between layers , resulting in parts that are significantly more tear-resistant.

The recommended extruders for this filament are those where the filament pull can be adjusted . The ideal pull point is where the extruder applies strong tension to the filament without pinching it. If your printer doesn't have an extruder designed for flexible filament, you may need to upgrade it to work with eFil TPU 90A. The simplest upgrade is to print a wedge-shaped part to guide the filament into the barrel. Check compatibility with your printer beforehand. Bowden extruders are not recommended. It's always advisable to reduce the printing speed until you've mastered the appropriate settings for your printer. You can improve performance by pre-drying the filament for 30 to 60 minutes at 90°C.

TPU manufactured in Spain by 3DFILS following the most rigorous quality controls.

These are the recommended printing settings. These values ​​may vary depending on the 3D printer and the environment. We recommend conducting your own tests to adjust the settings.

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