Extrusion International 3-2025

41 Extrusion International 3/2025 Heart of the Recycling Line: The WEIMA W5.18 The WEIMA W5.18 single-shaft shredder is ideal for shredding large volumes of plastics. It features a V-rotor with a diameter of 500 mm and a rotor length of 1,800 mm. The Siemens PLC control system with an intuitive touch panel makes the shredder easy to operate. A generously sized inspection hatch ensures convenient access for maintenance work. The owners are also im - pressed with the material feed: "The swing ram transports the IBC containers very quickly and thoroughly to the rotor. These are partly 16-kilogram IBCs, and within a short time, shredded plastic pieces measuring 60 mm come out. We are very satisfied with the result," says Martin Schack Staffeldt. Innovative Additions for Maximum Results The shredding process at Dansk Emballage is opti- mally tailored to plastic applications. Before shredding, all grids, pallets, and valves are removed from the cans, drums, or IBCs, leaving only pure plastic. Thanks to an integrated and automated water injec- tion system in the shredder's cutting chamber, the con- tainers are pre-washed during shredding. This cleans the containers of coarse residues and significantly re - duces the risk of fire. Dansk Emballage has also opted for additional rotor wear protection. This ensures the rotor is well-protected against foreign objects and abrasive materials. A cam - era installed inside the shredder allows for continuous monitoring of the process. The pre-shredded material is then transported to a granulator for further size reduction. This is followed by a friction washer. The combination of granulator and friction washer enables effective shredding and clean- ing of plastic waste. The granulator ensures further reduction of material size, while the friction washer re - moves contaminants to provide clean granules for fur- ther processing. These two processes are crucial for the quality of the recyclate and the efficiency of the entire recycling process. Circular Economy: Turning Old into Valuable Dansk Emballage uses 35% of the recycled material to produce new IBCs – a closed-loop system that is highly appreciated by customers. The decision to choose WEIMA was made after a thor- ough evaluation of various suppliers. "We looked at many different potential suppliers for the shredder and ultimately chose WEIMA. And we are very satisfied with it," says Martin Schack Staffeldt. The comprehensive service and support from the local WEIMA representative in Denmark have significantly facilitated the implementation and operation of the shredder. WEIMA Maschinenbau GmbH Bustadt 6-10, 74360 Ilsfeld, Germany www.weima.com Shredded IBC containers High-quality and clean recyclate after the recycling process The heart of the recycling plant: The WEIMA W5.18