RECYCLING LINES | TECHNOLOGY
plastics are designed with this goal in mind. One example is our ZSK twin-screw extruder, which we currently offer in the ZSK Mc18 generation. It achieves extremely high throughputs, with rela- tively low energy consumption and a high degree of automation. Numerous additional units such as side feeding, degassing, and condition monitoring, increase its performance, enabling resources to be used in a highly targeted manner and maximum output to be achieved. In order to achieve this high power density, all process parameters must be correctly determined and the mechanical variables that transfer the high torque to the twin screw need to be specified. In addition, there are process engineering factors that ensure consistently high product quality during compounding. This is the basis: an interplay of ‘old technology,’ process engineering and automation. This is where our wealth of experience in the construction of twin-screw extruders really works in our favour.” At K2025, visitors can see a demonstration of various Coperion recycling technologies working together: a Herbold Meckesheim Hydrocyclone Stage, the ZSK FilCo filtration compounder, the ZS-B MEGAfeed side feeder, a Coperion K-Tron K3-V200 vibratory feeder, an S60 single screw feeder and the MechaTron flat bottom feeder. Coperion’s ZSK FilCo filtration compounder
allows recyclate filtering and subsequent com- pounding in one step. Compared to two-step production lines, it handles the product very gently and provides higher quality at significantly reduced energy consumption when recycling post-consum- er waste and other highly contaminated polymers. Coperion says that to fully exploit the line’s poten-
tial, raw materials must be supplied at a constant rate. The company’s ZS-B MEGAfeed side feeder reliably feeds recycled materials with a bulk density as low as 20 kg/m³ into the ZSK FilCo and other ZSK extruders. Coperion says its expertise is becoming increas- ingly useful in the removal of unwanted odours. Throughout the entire recycling process, it offers various technology and process solutions for deodorising PCR plastics and recently installed EcoFresh silo devolatilization at its Recycling Innovation Centre in Niederbiegen, Germany. This allows customers to test various odour removal technologies using actual products under near- production conditions and ensure the final process meets all quality requirements before making an investment.
Decontamination Gneuss says that its MRS Extrusion Technology has gained a reputation as a viable option for repro- cessing contaminated materials like polyester (PET), polystyrene (PS), polypropylene (PP), or polyethyl- ene (PE). In combination with the company’s Rotary Filtration Systems, optimised vacuum technology, an online viscometer VIS, and Gneuss Measurement Technology, customisable recycling lines tailor- made for specific materials can be engineered. As volatile contamination is removed in the MRS extruder under vacuum and solid contamination is removed by fine filtration in the rotary filtration system, the Gneuss lines offer high quality recycling in one extrusion step. Typical applications include the processing of PET reclaim, such as bottle, sheet regrind, or fibre waste, into high quality end
8BH49 2025
9-26 0CTOBER Düsseldorf, Germany
kai.hu@
sweeu.com
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