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FilaFlex TPE UltraSoft 70A

Ref.: TPE-FFLEX-70A-NAT-175-500

37.90 €

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Filaflex UltraSoft 70A is one of the most elastic and softest filaments on the market, reaching a 900% stretch until breaking. The Filaflex UltraSoft filament is a TPE filament (Thermoplastic Elastomer) with a polyurethane base and certain additives.

The Filaflex Ultrasoft 70A filament has an even higher elasticity and smoothness than the Filaflex 82A (Filaflex), with a Shore 70A hardness and an abrasion resistance of 45mm³, being one of the most elastic and soft filaments on the market. Like the Filaflex, the Filaflex Ultrasoft 70A is resistant to solvents, acetone and fuels, but with lower tensile strength and lower softening temperature. The Filaflex UltraSoft 70A has good bonding properties with other types of materials used in the field of 3D printing, such as PLA, ABS, HiPS and some Nylons, resulting in composite pieces with different properties and hardness. Thanks to all the qualities mentioned above, this material has an infinity of applications in all types of fields

FilaFlex UltraSoft is non-toxic, but not approved for medical or nutritional use. This material doesn't emit odors, is totally odorless and does not produce toxic gases. Due to its high elasticity, it is a complex material to use, since, in certain types of extruders, it's likely to wrap around the pinion of the extruder motor or directly bend the filament already before entering the HotEnd, something that occurs if a Bowden drive system is used. Therefore, this material is recommended only for advanced users and with 3D printers with the Recreus Extruder v3 extruder or with an extruder prepared to print elastic filaments (Should always be direct drive, never bowden). The "Recreus Extruder v3" is a direct-drive extruder extruder with high quality components created by the manufacturer of the Filaflex UltraSoft 70A, to be able to use this and other flexible materials without any problems and at high speeds compared to the rest of extruders on the market . Another extruder compatible with this material, but not recommended by the manufacturer, is the E3D Titan Aero.

If you are looking for a flexible material, but at the same time with a certain resistance, you should choose the PLA Soft-Flexible or the Flexfill TPU.

In the following table you can see the comparison between the different materials with some flexibility that exist in the market:

	TPE 70A Filaflex	TPE 82A Filaflex	TPE 90A Flexfill	TPU 92A Flexfill	TPU 93A Smartfil	TPE 96A Flexfill	TPU 98A Flexfill
Tensile strength (MPa)	32	45	5	49	40	5	53.7
Elongation at break	900 %	600 %	250 %	-	-	150 %	318 %
Absorción humedad					-
Chemical resistance	Solvent Acetone Fuel	Solvent Acetone Fuel	Water Acid Alcohol Alkali	Polish Oil	Polish Oil Solvent	Water Acid Alcohol Alkali	Polish Oil
Contact food and skin	Not recommend.	Not recommend.	Certificate	Not recommend.	Not recommend.	Reliable	Not recommend.
Permeability gases					-

Table 1: Comparison of properties of the flexible filament range

General information
Material	TPU/TPE
Format	50 g / 500 g
Density	(ISO 1183-1-A) 1.08 g/cm³
Filament diameter	1.75 / 2.85 mm
Filament tolerance	± 0.05 mm
Filament length	(Ø 1.75mm - 500 g) ± 193 m / (Ø 2.85mm - 500 g) ± 73 m

Printing properties
Printing temperature	215 - 235 ºC
Print bed temperature	40 ºC
Chamber temperature	✗
Cooling fan	✓
Recommended printing speed	20 - 40 mm/s

Mechanical properties
Elongation at break	(DIN 53504-S2) 900 %
Tensile strength	(DIN 53504-S2) 32 MPa
Tensile modulus	- MPa
Flexural strength	- MPa
Flexural modulus	- MPa
Surface hardness	Shore 70A

Thermal properties
Melting temperature	195 ºC
Softening temperature	90 ºC

Specific properties
Transparency	-
Chemical resistance	✓

Other
HS Code	3916.9
Spool diameter (outer)	200 mm
Spool diameter (inner hole)	53 mm
Spool width	50 mm

It is very advisable to read the following article that will see major challenges confronting the FilaFlex UltraSoft 70A when printing as well as solutions and usage tips. The use of 3D printers with direct drive extruder is recommended (Recreus Extruder V3). It is essential to use 3D printers with direct drive of extruder (Recreus Extruder V3), in any case it will be possible to print this filament with a 3D printer with bowden type extruder.

When you try to print for the first time the filament FilaFlex UltraSoft 70A is recommended to start with low speeds (20 mm/s) and high temperatures (225 °C). If you don´t have the Recreus extruder or hotend optimized for elastic filaments must use retraction distance 3.5mm, a speed of 20 mm/s, and increase the flow if the filament is intermittent extrusion (between 105-110%). In addition they should reduce the pressure lever arm presses the filament on the motor pulley to prevent the filament choke or jams.

As you gain experience you can increase the speed and lower the temperature in order to achieve high quality prints. You must use the fan layer because it is liquid enough to melt. As for the extrusion height does not affect the adhesion between layers (Ideal 0.20 mm). The recommended base temperature is 40 ºC. The use of BuildTak, 3DLac, Kapton tape or Blue Tape is not needed, for the Filaflex UltraSoft 70A to adhere to bed.

The manufacturer (Recreus 3D) makes printing profiles (CURA, SLIC3R, CRAFTWARE, KISSLICER or SIMPLIFY3D ) FilaFlex you can download here.

You can download the manufacturer's safety data sheet, and the technical data sheet in the download tab.