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Neo TPU

Ref.: MEDPHEN-NEO-TPU-175-450

145.00 €

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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.

General information
Material	TPU/TPE
Format	450 g
Density	1.19 g/cm³
Filament diameter	1.75 mm
Filament tolerance	- mm
Filament length	± 157 m

Mechanical properties
Elongation at break	(ISO 527) 3.6 %
Tensile strength	(ISO 527) 52 MPa
Tensile modulus	(ISO 527) 15.5 MPa
Flexural strength	- MPa
Flexural modulus	(ISO 527) 769 MPa
Surface hardness	64 Shore D

Printing properties
Printing temperature	196 - 205 ºC
Print bed temperature	50 - 70 ºC
Chamber temperature	-
Cooling fan	✗
Recommended printing speed	20 - 40 mm/s

Thermal properties
Melting temperature	196 ºC
Softening temperature	(ISO 306) 122 ºC

Specific properties
Transparency	✗

Other
HS Code	3916.9
Spool diameter (outer)	200 mm
Spool diameter (inner hole)	52 mm
Spool width	55 mm

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.