Ultrasint® TPU01

• Density: ~ 1.1 g/cm³
• Shore A: 88-90

• UL Flammability UL 94: HB
• Vicat Softening Temperature/A (10 N) [°C]: 97 – 98

• Cytotoxicity – Neutral Red (ISO 10993-5 (2009)): Result – Passed
• In Vivo Sensitization – Local (ISO 10993-10 (2013)): Result – Passed
• In Vitro Skin Irritation (OECD Guideline No. 439): Result – Passed

Since the raw material is in powder form, the surface produced after 3D printing is slightly rough. The roughness values range from Ra 6 – 12 µm, depending on the geometry and orientation.

In the additive manufacturing process, the white TPU powder is coated with black color. As a result, the interior of the components is completely black, but the surface retains a white component, which contributes to the typical gray production color of Multi Jet Fusion. Due to technical reasons, this coloration is rather inhomogeneous with bright and dark areas.

DOWNLOADS

• Material Datasheet: Extended Material Datasheet TPU – including information about:
  • Mechanical Metrics
  • Cyclical Mechanical Testing (“ROSS Flex”)
  • Chemical Resistance
  • UV Stability
  • Hydrolysis Resistance
  • Air and Liquid Tightness
  • Flame and Temperature Resistance
  • Air Quality in Vehicle Interiors
  • Biocompatibility
  • Food Contact

The general tolerance is 1 mm up to 100 mm outside dimension, above 0.9 % in X/Y and 1.5 mm up to 100 mm outside dimension, above 1.8 %. In the case of large-area, flat geometries, warpage may occur in addition. Due to the elastic or flexible material properties, 3D-printed products made of this material are only dimensionally stable to a limited extent and are easily deformable depending on the geometry.

Coloring

Coloring in black is possible, but can significantly worsen the dimensional accuracy.
The material tends to swell, which can increase the tolerance by up to 3%. You can find more information under “Accuracy”.

Painting

Wet painting of TPU is possible in principle. However, this should not be used if the component in question is subject to strong dynamic stress, as in such a case the paint could come off at the points of movement.

For more information, please visit Painting.

Minimum Wall Thicknesses
The minimum wall thickness should not be less than 1 mm. For longer objects/surfaces or objects subjected to mechanical loads, you should increase the wall thickness.

Clearances
Maintain a minimum clearance of 0.5 mm for grooves or closely spaced walls. Individual objects (“shells”) must be uploaded as separate files unless they are firmly connected.

Resolution
Details as small as approximately 0.5 mm can be represented.

Size
The object should not exceed 370 x 274 x 380 mm.

TPU processed in additive manufacturing (Multi Jet Fusion) is used wherever high loads occur or flexibility is required. The material has been consistently designed for additive serial production and is widely used in industry and medicine.

Shock Absorption/Cushioning
Due to its elasticity, the material can be used for cushioning or shock absorption similar to hard rubber. It is also possible to produce lattice structures for this application. Depending on the wall thickness and geometry of the lattices, different “hardnesses” can be achieved and optimized for the respective application.

Elastic Handles/Grippers

Geometrically complex, workpiece-friendly grippers can be printed for use in robotics or similar applications.

Covers

TPU can be used for housings or protective covers in cases of high impact or dynamic loads.

Orthoses

TPU is ideal for many applications in orthopedics due to its flexibility and durability.