Bioworks Inc. has initiated a chemical recycling demonstration project focused on socks made from PlaX, a next-generation, plant-based synthetic fiber. The initiative, selected under the Tokyo Metropolitan Government’s startup support program, aims to validate a circular design model for sock products.
In collaboration with TARROW TOKYO, specially manufactured PlaX socks will be distributed to customers. Participants will return used socks in biodegradable PLA bags, enabling seamless and hygienic collection. These returned socks will undergo chemical recycling with the goal of achieving 90% raw material recovery at 99.9% purity.
The project not only tests technological and cost feasibility but also evaluates environmental impact. Bioworks has already demonstrated success in lab-level recycling of PlaX, including separation of blended materials.
Bioworks also released its Progress Report 2025, outlining its Vision for 2030, which includes replacing 10% of new polyester demand with PlaX, aiming to reduce 2.2 million tons of CO₂. The company continues to emphasize transparency and traceability in its supply chain and collaborates globally for responsible manufacturing.
Meanwhile, PlaX has been featured in emmi’s SS25 collection, produced with low-emission “green factories” and CO₂ emission data made visible to consumers. Additionally, PlaX fabrics will be presented by HASETORA SPINNING, KOMATSU MATERE, and TAKISADA-NAGOYA at Milano Unica AW26, from July 8–10, 2025 in Milan.