Technology Description

Pilot 3 of the CSSBoost project showcases innovative circular economy solutions within the plastics sector in Germany’s Northern Black Forest region. Its core concept is to create a fully integrated circular system by strategically connecting three key value chains: waste management and recycling through Remondis, the manufacturing of reusable packaging by the Infinex Group, and the production of CO₂-negative plastic compounds by Carbonauten GmbH.
As a leading waste management company, Remondis is closing the loop in household waste disposal by producing recycled yellow bags entirely from collected household plastic waste. This approach lowers CO₂ emissions by almost 80 percent per kilogram of film and reduces transport distances by 99 percent, representing a major step towards decarbonisation in the municipal sector. Remondis’s specific application in the pilot project is therefore the creation of a regional closed loop for yellow bags, which will eliminate the future use of virgin materials for this product.
At the same time, Carbonauten GmbH is developing pioneering CO₂-negative compounds derived from woody biomass. Using a proprietary pyrolysis process, biomass is converted into technical biocarbons, which not only significantly lower the carbon footprint of plastic parts but also improve their performance by increasing stiffness, enhancing UV resistance, and reducing weight. This technology enables long-term carbon storage within the plastic matrix and reduces the need for petroleum-based polymers by up to 50 percent.
Infinex then incorporates these biocarbon-based compounds into the manufacture of its reusable twinwall sheets, which are used in packaging and industrial applications. This integration is designed to lower the CO₂ footprint of its products by at least 30 percent. Together, these efforts in Pilot 3 provide scalable, real-world solutions for advancing the circular economy and decarbonising the plastics industry.