13 Jul 2021 --- Coperion is unveiling its ZSK twin-screw extruders for PET bottle-to-bottle recycling. The system condenses shredded PET in a Solid State Polycondensation (SSP) reactor and feeds it directly into a twin-screw extruder, eradicating the more energy-intensive industry norm of pre-drying the material into pellets. The US Food and Drug Administration (FDA) has approved the process for food contact applications.
