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Filament with TPU base reinforced with graphene nanofibre for applications in the health sector.

The Neo TPU filament is one of the materials presented by Medphen, a company focused on the development of 3D printing materials for the medical sector.

The Neo TPU filament is composed of a TPU base and a graphene nanofibre reinforcement for the health sector.

TPU is a flexible material with good adhesion between layers, offering great mechanical properties. Neo TPU is a flexible, low temperature thermoplastic material that is very soft and impact resistant. It has a hardness of 65 Shore D, so it can be printed with almost any FDM 3D printer, even those with a Bowden extrusion system.

This filament is highly hydrophobic, so it has antibacterial properties and inhibits viruses, algae or fungi. An ideal material of choice for the manufacture of devices for the health sector requiring high quality. The antibacterial properties of this filament facilitate disinfection and maintain the sterility of the materials in contact.

Medical grade Neo TPU printed part

Image 1: Part printed with Neo TPU. Source: Medphen.

In addition to the properties inherited from TPU, graphene also contributes to its properties. Graphene nanofibres are a material belonging to the graphene-based materials (GBM) family. Graphene nanofibres enhances the properties of the base polymer by blocking shrinkage, deformation and layer lifting, thus providing a structure and density that facilitates processability to produce complex geometries.

Some of the possible applications for this filament are: 

  • 3D printing solution for customised orthoses.
  • Supporting material to stabilise bone and other fractures, radiation oncology, prosthesis or insoles for feet.
  • Medical devices such as connectors, catheters, flexible tubes, fluid and air management.

It should be noted that the use of the material for a particular application must be tested by the user beforehand to determine its suitability.

Thanks to its properties, as well as its compliance with regulations for certain applications, Neo TPU filament stands out for the variety of uses and possibilities it offers for the medical sector.

Elongation at break (%) 3.6
Tensile strength (MPa) 52
Tensile modulus (MPa) 15
Flexural modulus (MPa) 769
Surface hardness 6
Softening temperature (ºC) 122
Flexibility Flexibility
Hide color variations (Hide color variations)

The printing temperature range of this material is between 196 and 205 ºC. The printing temperature is directly related to the printing speed. The higher the processing speed, the higher the printing temperature should be. This material does not require a heated bed, but if available, it is recommended to use it at a temperature between 50 - 70 ºC. If the adhesion to the substrate is nevertheless weak, the use of specific 3D printing adhesives such as Magigoo Flex is recommended.

The use of open printers ensures efficient cooling.

Neo TPU filament can absorb moisture. If signs of moisture are detected, it is recommended to dry the filament with a filament drying device such as PrintDry Pro. It is also recommended to store the filament in a vacuum container such as PrintDry or in a sealed bag with built-in desiccant.

After using Neo TPU filament, it is recommended to use cleaning filament to remove any remaining material from the hotend.

General information
Manufacturer Medphen
Material Neo TPU
Format 450 g spool
Density 1.19 g/cm3
Filament diameter 1.75 mm
Diameter tolerance -
Filament length ± 157 m
Colour Black
RAL/Pantone -
Printing properties (1)
Printing temperature 196-205ºC
Base/bed temperature 50 - 70 ºC
Chamber temperature Not required
Layer fan Not Recommended
Print speed 20-40 mm/s
Nozzle diameter -
Extrusion Multiplier -
Mechanical properties
Izod impact resistance  -
Charpy impact resistance  -
Elongation at break (ISO 527) 3.57 %
Tensile strength (ISO 527) 52 MPa
Tensile modulus (ISO 527) 15.45 MPa
Bending strength -
Bending modulus (ISO 527) 768.94 MPa
Surface hardness  64 Shore D
Thermal properties
Softening temperature (ISO 306) 122 ºC
Melting temperature 196 ºC
Specific properties
Transparency Opaque
Additional information
HS Code 3916.9
Spool diameter (outside) 200 mm
Spool diameter (inner bore) 52 mm
Spool width 55 mm

* The typical values listed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend confirming the final results and properties with your own tests. For further information please refer to the product data sheet.


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