DePoly is a Switzerland-based cleantech company developing chemical recycling solutions for PET and polyester. Its depolymerization process converts post-consumer and post-industrial PET—including textiles, fibers, and packaging, even when mixed, colored, or contaminated—into purified monomers such as terephthalic acid (TPA/PTA) and monoethylene glycol (MEG). These virgin-equivalent building blocks can be re-polymerized to make new PET resins and polyester fibers, enabling closed-loop recycling beyond the limits of conventional mechanical methods.
Working with partners across the plastics and textile value chain, DePoly targets hard-to-recycle waste streams to supply circular feedstocks and lower dependence on fossil-derived raw materials. The company operates from Switzerland and is scaling its technology from pilot and demonstration activities toward commercial deployment for applications in packaging, apparel, and industrial materials.
chemXplore tracks 3 projects involving dePoly, of which one is active.
dePoly's role on them: Owner, Operator, Developer, Technology licensor, and Technology / equipment supplier.
1 new construction.
Licensors are recorded on this project For subscribers
Targeting: Monoethylene glycol (1), PET (1), Terephthalic acid (1)
New Monthey depolymerization plant converts PET and polyester textiles back into virgin-quality monomers for hard-to-recycle streams.
Showcase plant will convert PET and polyester waste into oil‑equivalent, virgin‑quality monomers without fossil fuels; commercial scale target set for 2027.
Closed-loop bottle made from mixed PET and polyester waste, depolymerised to PTA, re-polymerised into PET pellets and blown into bottles; NIAS screening indicates food-contact compliance.
Using 20 kg of cut-off base-layer fabric, the trial will depolymerise PET to monomers and rebuild recycled PET yarn; funded by a CHF 24,000 Innosuisse grant.
The plant will recycle 500 tons of PET annually, creating 30 jobs, and serve as a model for future global expansion, targeting industries like apparel, food, and automotive.
A new CHF 12.3m seed round will help scale a pilot plant in Valais, Switzerland, using a unique chemical recycling process to convert PET plastics and polyester textiles into raw materials.
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