Filtration compounder for polymer recycling
In the recycling industry, processing post-consumer recyclate (PCR) and highly contaminated polymers can be a challenging task. Traditional recycling methods often require multiple steps, leading to increased energy consumption and emissions, as well as potential degradation of the end product.
Combines filtration and compounding in one step
The ZSK FilCo filtration compounder from Coperion provides a streamlined solution by integrating filtration and compounding in a single production system. This process involves feeding waste plastic into a ZSK twin screw extruder, where it is melted, homogenized, and devolatilized. The melt is then filtered to remove contaminants before being reintroduced into the extruder for compounding with reinforcing materials or fillers. Compared to traditional two-step production lines, the ZSK FilCo reduces energy consumption and emissions by over 50%. Additionally, recompounds produced using this method feature higher quality due to the gentle, single-step melting process. This system is particularly suited for recycling applications involving post-consumer waste and highly contaminated polymers. By employing high-accuracy Coperion K-Tron gravimetric feeders, the ZSK FilCo ensures precise incorporation of additives.
Benefits
- Over 50% reduction in energy consumption and emissions
- Higher end product quality
- Streamlined equipment setup reduces footprint
- Single melting step minimizes thermal stress
- Accurate gravimetric feeding ensures consistent results