Rebound PEBA Air TDS – Lightweight Elastic Foaming Filament

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1. Product Introduction

Rebound PEBA Air - Elastic Filament Key Features

Tunable Hardness: Higher temp, softer feel; lower temp, firmer rebound.
Extreme Lightweighting: Up to 50% weight reduction with active foaming.
Industrial Durability: Nylon-TPE backbone offers high fatigue and chemical resistance.
Soft Matte Texture: Foamed surface feels like soft fabric.
Excellent Printability: Stiff enough to avoid jams, even at high speeds.

Application

Siraya Tech PEBA Air is a unique foaming elastic material ideal for:

Wearable devices
Sports equipment
Impact-resistant components
Compression-relieving toys
Lightweight industrial

2. Specifications

Specifications	Data
Name	Rebound PEBA Air (70A-90A)
Color	Black
SKU	ST3029
Net weight (KG)	0.8
Gross weight (KG)	1.1
Package Dimensions	21217.5 cm
Diameter (mm)	1.75±0.03
Material Type	Foaming TPE+PA12 copolymer elastomer

3. Property Data

Mechanical Properties	Print @ 240C	Method
Printed Part Density (g/cm³)	0.73	ISO 845
Vicat Softening Temp (°C)	104.3	ISO 306
Hardness (Shore A)	81	ISO 7619
Bayshore Rebound (%)	60	ASTM D2632
Tensile Yield Strength (MPa)	8	X-Y, ISO 1798
Elongation at Break (%)	520	X-Y, ISO 1798

Mechanical Properties	Print @ 250C	Method
Printed Part Density (g/cm³)	0.63	ISO 845
Vicat Softening Temp (°C)	100.4	ISO 306
Hardness (Shore A)	76	ISO 7619
Bayshore Rebound (%)	60	ASTM D2632
Tensile Yield Strength (MPa)	6.5	X-Y, ISO 1798
Elongation at Break (%)	460	X-Y, ISO 1798

Mechanical Properties	Print @ 260C	Method
Printed Part Density (g/cm³)	0.6	ISO 845
Vicat Softening Temp (°C)	93	ISO 306
Hardness (Shore A)	74	ISO 7619
Bayshore Rebound (%)	60	ASTM D2632
Tensile Yield Strength (MPa)	5.75	X-Y, ISO 1798
Elongation at Break (%)	420	X-Y, ISO 1798

Mechanical Properties	Print @ 270C	Method
Printed Part Density (g/cm³)	0.55	ISO 845
Vicat Softening Temp (°C)	88.6	ISO 306
Hardness (Shore A)	70	ISO 7619
Bayshore Rebound (%)	60	ASTM D2632
Tensile Yield Strength (MPa)	5	X-Y, ISO 1798
Elongation at Break (%)	375	X-Y, ISO 1798

4. Drying and Storage

Drying and Storage
Note: PEBA Air is highly hygroscopic (absorbs moisture), which severely impacts foaming and print quality, causing bubbles, stringing, and poor surface finish.
Upon Opening	Immediately place the spool in a filament dryer or a sealed container with plenty of active desiccant. Aim for <15% humidity. Print directly from the dry box if possible.
Storage	Always store the spool back in the provided resealable bag with the desiccant pack. Ensuring it's tightly sealed.
Dry Steps	Put the filament in a dedicated dryer or convection oven. Dry 4-6 hours at 70°C - 75°C before printing.

5. Printing Profile

Printer	Download Link
BambuLab	Setting Profile
Creality
Flashforge

For untested printers, please test and calibrate according to the recommended parameters below.

Parameter	Recommendation	Notes
Nozzle Temperature	230°C - 270°C	Check the following table to see how temperature affects hardness and foaming.
Nozzle Diameter	0.4mm or 0.6mm	A 0.6mm nozzle is recommended to achieve the best foaming effect and most consistent results.
Bed Temperature	60°C - 100°C	Hot beds are crucial for preventing warping and improving adhesion, especially for larger prints.
Build Surface	Glass, PEI Film, or PC Film	Ensure your build surface is clean. For PEI, a release agent like a glue stick is advised to prevent bonding too strongly.
Cooling Fan	50 - 100%
Print Speed	30 - 120 mm/s	Start slower (30-60mm/s) and increase speed once you are confident in your settings.
Retraction	0mm or OFF	Turn retraction off: Due to the foaming nature, standard retraction is ineffective and can cause clogs. Print one model at a time to minimize travel moves and oozing.
Flow Rate / Extrusion Mult.	Because the filament expands as it heats, you must reduce your flow rate significantly. Over-extrusion will lead to poor results. Calibration is essential: Use the starting flow rates in the table below and adjust as needed for your specific printer.

Temperature vs. Hardness & Flow (Approximate Guide)

Print Temp (°C)	Approx. Shore Hardness	Resulting Properties	Starting Flow Rate (%)
230°C	~95A	No Foaming, 95A stiffness	95%
240°C	~81A	Denser, Stiffer, Less Foaming, Less Texture	~80% - 84%
250°C	~76A	Balanced Foaming, Noticeably Lighter/Softer	~68% - 72%
260°C	~74A	Optimal Balance, Good Foaming & Softness	~58% - 62%
270°C	~70A	Max Foaming, Lightest, Softest, Max Texture	~53% - 57%

Note:

Exact hardness and optimal flow rate depend on your specific printer, nozzle size, and other settings. Use this table as a starting point for calibration. It is important to dial in flow rate as it is related to the temperature and how much the tpu air expanded as well as the flow rate of the extruder.

6. Troubleshoot

Taming the Ooze (Retraction)	Active foaming materials naturally expand in the hotend, causing oozing during travel moves. Standard retraction settings are often ineffective. Best Practice: Turn Retraction OFF in your slicer (set Retraction Distance and Speed to 0).
Minimize Travel	Print one model at a time whenever possible. Using your slicer's "sequential printing" feature can also help (if available and suitable for the model). Models designed with continuous extrusion paths (minimal jumping between features) will yield the cleanest results due to reduced oozing.

Perfect Plate Adhesion

Too Sticky? If prints bond too strongly (especially on PEI), use a release agent like PVP glue stick, Magigoo, or even a light mist of Windex before printing. Let the bed cool completely before attempting removal.
Not Sticking? Ensure your bed is clean (wash with soap and water, then wipe with IPA) and perfectly leveled. A slightly slower, wider first layer can improve adhesion.