By reclaiming industrial waste into a high-performance rPA12 with 46 MPa tensile strength, this “loop-closing” filament aims to prove that sustainable manufacturing doesn’t have to sacrifice engineering performance.
In a move that underscores the growing push toward circular manufacturing in additive production, UK-based materials specialist Filamentive has introduced rPA12, a 100% recycled nylon filament derived entirely from industrial Multi Jet Fusion (MJF) waste powder engineered for sustainability and mechanical performance.
Filamentive’s rPA12 (roughly $68 per kg) is not the only recycled nylon filament available on the market, but it does stand apart in terms of its feedstock origin. Made entirely from waste PA12 powder from MJF processes, it “closes the loop” in the additive manufacturing ecosystem itself by converting surplus powder into FDM-ready filament, the company says.
In effect, the waste of one additive process becomes the feedstock of another. rPA12 represents a new category focused specifically on reclaiming waste generated within the additive manufacturing sector itself, as opposed to other recycled nylon, which are often partially recycled blends from post-consumer plastic waste.
What’s Actually Recycled?
The unused PA 12 powder used in the MJF process is collected and used for the next print run, but powder cannot be reused indefinitely. Over time, a percentage of PA12 powder—still technically viable material—must be removed from the process loop. Traditionally, this surplus becomes waste.
According to Filamentive, rPA12 addresses exactly that inefficiency. Produced in collaboration with extrusion technology specialist 3devo, a company that has been producing filament from SLS and MJF waste for years, the filament uses 100% recovered PA12 feedstock sourced from industrial MJF operations, no virgin nylon (a fossil-fuel derived plastic) is added, which reduces demand for virgin PA12 overall.