7.6.2 Industrial and fibre-to-fibre recycling

Remanufacturing takes returned garments and transforms them into new or upgraded products, often through disassembly, repair and recombination. Upcycling uses waste materials (offcuts, damaged items) creatively, generating higher-value pieces without fully breaking fibres down. Recycling technologies aim to recover fibre or polymer value: mechanical recycling shreds and re-spins; chemical recycling dissolves and re-precipitates polymers; hydrothermal and enzymatic methods are emerging; nano-enabled approaches are being explored. Industrial fibre-to-fibre systems require consistent input quality, making upstream monomaterial design and reduced accessories critical. Sorting technologies—manual and automated, including spectroscopy, AI, robotics plus digital tagging and blockchain—are the bridge between returned products and appropriate recycling pathways. This subchapter ties the whole module together by showing how upstream and midstream choices determine which downstream technologies are feasible and economically viable.

Fibre-to-fibre recycling is one relevant recovery pathway, not the inevitable destination for every textile: the appropriate route depends on product condition, composition, contamination, available infrastructure and whether higher-value use, repair, reuse or remanufacturing remain viable. That is also how the upstream design requirement should be read — consistent composition and fewer incompatible trims make a fibre-to-fibre route possible where it exists, rather than making that route the goal in itself.

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