Soy Protein Fiber
Soy fiber is a regenerated protein-based bio-material derived from discarded soybean hulls, a byproduct of soy food production.
The extracted soy protein is dissolved, purified, and wet-spun into filaments, then stabilized to create a soft, breathable textile fiber.
As a plant-based polymer sourced from renewable agricultural waste streams, soy fiber offers a bio-derived alternative to petroleum-based synthetics.
China’s large-scale soybean production creates abundant byproducts, which our trusted manufacturing partner transforms locally into soy protein fiber.
The oils are first extracted from soybean byproducts for other uses, leaving behind protein-rich material. This protein is refined into a fine powder and dissolved in an alkaline solution to create a thick spinning liquid. The liquid is extruded through fine holes called spinnerets into a coagulation bath, where it solidifies into long, continuous filaments. These filaments are then washed, stretched to increase strength, and dried to form soy protein fiber.
Soy fiber turns an existing agricultural resource into something new, reducing the need for virgin materials. By using a byproduct of soybean processing, it helps minimize waste and makes better use of what the earth already provides. Its production requires less energy than petroleum-based synthetics, and being plant-based, it’s biodegradable and breaks down naturally, in the right conditions, instead of lingering in landfills or oceans.
No known certifications at the fiber level
Why we chose to use it
We chose it because soybean food production generates massive volumes of byproduct, and we see that as a resource, not a problem.
By transforming agricultural leftovers into textile fibers, we're working to give new life to materials that already exists rather than demanding new raw resources.
