Roamr TPU Air HR 85A User Guide

Roamr TPU Air HR 85A TDS

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1. Product Advantages

48%–50% Rebound Resilience: Provides professional-grade energy return, ensuring the "bounce" required for athletic performance.
Up to 57% Weight Reduction: Active foaming technology creates ultralight, "air-infused" structures that significantly reduce foot fatigue.
Variable Hardness Control (68A-85A): Dial in the perfect "squish" by simply adjusting print temperatures for different zones of a single part.
Firm Support, Zero Stiffness: Ergonomic comfort that prevents foot fatigue.
Industrial-Grade Wear Resistance: Built to withstand repeated compression and abrasion.
Premium Fabric-Like Texture: Moves beyond the "plastic" look with a high-end, production-ready finish that feels natural against the skin.

2. Available Formats

Diameter: 1.75mm (±0.03mm)
Colors: Beige/ Noir (Additional colors planned)
Net Weight: 800g Spool
Filament Density: 1.05 g/cm3
Melt Index (MFI): 8 g/10min @ 190 °C, 2.16kg

3. Printed Settings

Parameter	Recommendation	Notes
Nozzle Temperature	220−260°C	Higher temps / Larger Nozzle = more foaming (lighter/softer). 0,4mm 240°C recommended starting point.
Recommended Nozzle Diameter	0.4mm−0.8mm	0.4mm standard nozzle works well.
Build Plate Temperature	35−50°C	Avoid excessive heat to prevent over-adhesion.
Recommended Build Surface	Glass (w/ PVP glue), PEI (w/ release agent), Steel Plate (w/ PVP glue), PC Film	Use release agent (PVP glue, Magigoo) on PEI or highly adhesive surfaces.
Cooling Fan Speed	100	Helps solidify the foamed structure quickly.
Print Speed	30−60mm/s	Slower speeds generally improve quality. Up to 150 mm/s possible with careful tuning.
Retraction	Off Recommended	Set Distance & Speed to 0. Material expansion causes oozing; retraction is generally ineffective.
Flow Rate / Extrusion Mult.	Variable (See Above Table for Each Nozzle)	MUST be reduced significantly at higher temps

The following properties were measured on specimens printed under controlled conditions*.

Since Roamr TPU Air HR foams hardness differently with 0.4mm and 0.6mm, where 0.4mm is more commonly ued and 6mm foaming easier. We are presenting two sets of tables.

For 0.4mm Nozzle:

Sample Print Temp (°C)	Flow Rate	Printed Part Density (g/cm³) (ISO 845)	Hardness (Shore A) (ISO 7619)
230	0.93	0.93	83A
240	0.83	0.83	82A
250	0.72	0.72	76A
260	0.62	0.62	70A

For 0.6mm Nozzle:

Sample Print Temp (°C)	Flow Rate	Printed Part Density (g/cm³) (ISO 845)	Hardness (Shore A) (ISO 7619)
220	0.84	0.84	85A
230	0.74	0.74	78A
240	0.65	0.65	72A
250	0.55	0.55	68A

*Specimens printed under the following conditions: Nozzle size 0.4mm / 0.6mm, Bed temp 45°C, Print speed 60mm/s, Infill 100%, Infill angle ±45°. Flow rate adjusted per temperature for optimal foaming.

4. Handling and Storage

Moisture Sensitivity: Roamr TPU Air HR is hygroscopic. It readily absorbs moisture, which negatively impacts print quality and foaming performance.
Drying: If exposed to ambient air, dry filament in a filament dryer or convection oven at 70−80°C for 4-6 hours before printing.
Storage: Store filament in the provided resealable bag with the included desiccant pack immediately after opening and when not in use. Keep sealed and in a dry environment.
Printing Environment: For best results, print directly from a dry box or filament dryer, maintaining humidity below 15%.

5. Disclaimer

The information provided in this technical data sheet is based on current knowledge and experience. Siraya Tech makes no warranties, expressed or implied, and assumes no liability in connection with any use of this information. Properties reported are typical values based on specific test conditions and may vary depending on printing parameters, printer type, part geometry, and environmental conditions. Users should conduct their own tests to determine the suitability of the product for their specific application.