Fillamentum Flexfill TPU 92A metallic grey

Flexfill TPU 92A is flexible filament that offers special mechanical behaviour.

Thanks to its flexibility, it works perfectly for sealings and repeatedly bending applications.

Great adhesion of layers insures good tear strength in all directions. The printed objects have also high abrasion and chemical resistance.

This material can be used for production of electrical and electronic equipment. It doesn’t contain the restricted substances. The use of the material in the food or medical industry is not recommended.

For flexible materials, Fillamentum can guarantee maximum deviation of diameter +/- 0,10 mm. During the production, filament is made with the best stability of diameter, roundness and colour.

Features

• Can be used for the final surface treatment
• Great interlayer adhesion ensuring tear strength in all the directions
• Excellent abrasion resistance
• Good rebound resilience
• High elasticity with highly reversible deformation
• Safe to use in electrical and electronic equipment
• Flexible
• Low warping
• BPA-free and styrene-free
• Recyclable

Print settings suggested by manufacturer

• Printing temperature: 220 – 240 °C
• Heated bed temperature: 50 – 60 °C
• Speed: 15 – 30 mm/s depending on Shore hardness, lower Shore needs to be printed slowly)
• Part cooling fan: 70 – 100 %
• Heated bed surface: PEI, mirror / glass
• Adhesive: Magigoo, Magigoo Flex, PVA Gluestick
• Raft / skirt /brim: skirt
• Heated chamber / enclosure: not needed
• Extrusion multiplier: 1.05 – 1.1

Adhesion

It is recommended to use PVA gluestick for build plate, because TPU sticks very well to PEI, glass /mirror.

Using PVA separation layer ensures easy removing of printed object from the build plate.

Bridges and overhangs

Overhangs can be printed very well. Bridges can be little bit challenging.

Printing speed

Regarding the Shore hardness, slow is the key. The softer material the lower speed is required.

Storing

Airtight bag with desiccant. TPU absorbs moisture from air. If the filament is wet, you can see bubbles, stringing etc. at the printed object.

Conditions for re-drying of the wet filament depend on the hardness: 92A at 80 °C for 3 –4 hours / 98A at 100 °C for 3 –4 hours.

Surface

We recommend use 1.1 extrusion multiplier to ensure connection between top/bottom infill.

It is possible to achieve different hardness of printed object. Settings of infill and perimeters influences the final properties.

Technical information

• Material: Thermoplastic polyurethane
• Color: metallic grey
• Diameter: 1,75 mm
• Weight: 500 g
• Length: 175 m
• Diameter tolerance: +/- 0.1 mm
• Hardness: 92A/42D

	Flexfill TPU	Flexfill TPE	Flexfill PEBA
Polymer base	Polyurethane + ester	Polyolefin + SEBS	Polyamide + ether
Tensile strength	49 MPa	5 MPa	36 MPa
Elongation on break	600 %	250 %	> 1000 %
Density	1.20 g/cm3	1.15 g/cm3	1.00 g/cm3
Sensitivity to moisture	High	Low	High
Chemical resistance	Oils, greases, ozone	Water, acids, alcohols, alkalis	Car fluids, toluene, acetone, ozone
Food & skin contact	Not recommended	Certificated	Not certificated
Gas permeability	High	Low	Medium
Optical properties	Glossy, transparent	Matte, non-translucent	Glossy, very transparent
For example, ideal for applications
Vibration	Anti-vibration, damping	Anti-vibration, damping	Vibration and energy transfer
Skin contact	-	Long-term touch of human skin (holding in hands)	-
Under temperature	+80–100 °	+80 °C	-40 °C
In contact with	oils	water	car fluids
Abrasion	Sliding abrasion	-	Impingement abrasion
Other	–	Outdoor	Low density
	–	–	Rebounding