PEBA

This type of flexible filament has different properties than the regular TPE or TPU filament you might be using. Based on Poly(ether-block-amide), PEBA was specially developed for use with 3D printers. Polyamide (aka nylon) is a hard hydrophilic segment that is responsible for higher mechanical strength. On the other side polyether is a soft hydrophobic part that gives flexibility. Thus, it offers a balanced combination of mechanical strength, breathability, flexibility, chemical resistance, and ease of processing.

Printability of PEBA filament

Fillamentum recommends using Magigoo PA as an adhesive (it is not a mistake, as PEBA contains amide) and we don't recommend printing on PEI surfaces. Regarding cooling, the more you cool, the more brittle the final part will be. 

PEBA mechanical and thermal properties

Although it is flexible with hardness 90 Shore A (equivalent to 42 Shore D), it exhibits different thermal, mechanical, and chemical behavior than the other flexible filaments (TPE/TPU). It is resistant to cyclic loading without getting damaged and has a high energy return, and still has the lowest density of all flexible filaments. These properties can be leveraged in the production of custom-made shoe outsoles or ski-boots outsoles. PEBA excels in very low-temperature resistance, where its mechanical properties are reliable until -60°C! PEBA has a great chemical resistance, for mention against car fluids (gasoline, diesel, oil, ...)

Tips and other notable benefits

• Recyclable, BPA free
• Low fumes released
• Safe for food contact applications (declaration sent per request)
• Safe to use in electrical and electronic equipment

Browse all PEBA filaments in stock in our warehouse in Senec, Slovakia. For comparison, see also TPU and FLEX.