3D printing with TPU
Thermoplastic polyurethanes (TPUs) are versatile elastomer plastics that are becoming increasingly important in 3D printing. Their unique properties, such as flexibility, high abrasion resistance and chemical resistance, make them ideal for a wide range of applications. TPU is widely used for the production of flexible components, prototypes and functional components that require both elasticity and robustness.
For 3D printing, TPU filaments are produced by extruding high-quality TPU granules from the Pearlthane/Estane product line into the desired shape using melt extrusion. These filaments can be produced in different degrees of hardness and diameters to meet your specific requirements.
The "direct extrusion technology" or the use of "pellet 3D printers" are further developments, which also allows the direct processing of plastic granules.
"Pellet 3D-Printer" process plastic granules instead of filaments. The granules are filled into an extruder where they are heated and melted before being extruded through a nozzle.
Below is a summary of the key points for processing TPUs in 3D printing:
- Preparation: Before printing, the TPU filaments or granules should be dried to remove moisture that could affect the print quality.
- Settings: The printing parameters such as temperature, speed and cooling must be carefully adjusted to achieve optimal results. TPU often requires a higher extrusion temperature (typically between 220 °C and 250 °C).
- Nozzle selection: A suitable nozzle is important to cope with the viscosity of the molten TPU and ensure uniform extrusion.
- Adhesion to the print platform and layer: The layer adhesion can be a challenge, especially with flexible materials. Careful calibration of the print parameters is crucial. Alternatively, we can recommend additives that simplify the processing of TPUs and increase the layer adhesion.
In summary, thermoplastic polyurethanes play a key role in 3D printing by providing innovative solutions for flexible and durable applications. Their adaptability and advanced printing technologies open up new opportunities in product development and manufacturing.
These plastics can be processed by
- Filament 3D printing
- Direct Extrusion
- Pellet 3D printing