Extrusion International 5-2021

47 Extrusion International 5/2021 WEIMAMaschinenbau GmbH www.weima.com WEIMA A6-6201 At the 27th Fakuma, WEIMAwill pres- ent fundamental process steps on the way to ef fi cient recycling of plastics at a joint booth with its long-standing partner Neue Herbold. Recycling, sustainability, and the cir- cular economy are not only a hot topic in the industry, but also among operators and the public. While on the one hand it is about guaranteeing that new products are recyclable (key- word Design for Recycling – D4R), on the other hand it is also about ensur- ing that recyclates can be used. This is the only way to ensure that plastics remain in the cycle for an extended period of time and that plastic waste is used as rawmaterials for new prod- ucts in a resource-conserving manner. The topic of circular economy will also be in the foreground at the booth of the shredder specialist. After all, a functioning recycling economy can only be realized with high-quality re- cyclate. To meet the strict quality cri- teria, the best possible processing of the plastic is necessary. WEIMA WLK 1000: Single-shaftshredderforlarge-volume plastic parts, fi lms, and fi bers At the booth, WEIMA will present the versa- tile WLK 1000 single-shaft shredder. It stands out for its high throughput and fl exibility in daily use. The WLK 1000 shreds not only massive start-up lumps, production waste or large-vol- ume plastic parts made of PE, PP, PVC, PU or PET, but also tear-resistant fi - bers and fi lms to a homogeneous size. The fi rst step on the way to producing high-quality recyclate. First-class shredding results The shredder can be optimally adapt- ed to any application with various equipment options. The V-rotor, with a working width of 1,000 mm and a diameterof370mm, delivers fi rst-class shredding results. For fl exible materi- als such as fi lms, fi laments, and fi bers, WEIMA also offers the F-rotor for a particularly precise cut. The counter knives of the WLK 1000 are manually adjustable and reversible. This allows the appropriate cutting geometry to be optimally con fi gured for each ma- terial stream. As a result, shredding remains energy-ef fi cient, wear costs can be minimized, and knife service life can be signi fi cantly extended. Flexible for varying material fl ows: The speed of the rotor can be con- tinuously adjusted via the optional frequency converter. This makes the machine particularly fl exible, especial- ly with changing material fl ows. The large-volume hopper with the inno- vative log spacer shape prevents the formation of material bridges even when shredding particularly large parts. Direct fi lling takes place via the low loading edge by conveyor belt, gripper, wheel loader ormanually and is therefore convenient to operate. Two-stage processing of plastic waste: Atwo-stageprocessingsystemisoften required to achieve particularly fi ne particle sizes. In cooperation with the granulator specialist and long-stand- ing partner, Neue Herbold, WEIMA has already implemented many joint customer solutions. Shredders from WEIMA can be precisely operated and controlled via Siemens PLC control. They have common interfaces (such as PROFIBUS or PROFINET) and can thus be optimally integrated into existing production systems. This also includes peripherals such as extraction, metal detection and secondary crushers. This optimizes the use of downstream productionmachines (such as washers and extruders) and increases the ef fi - ciency of the recycling line. Focus on Circular Economy: Two-stage shredding solution with WEIMA shredder and Neue Herbold granulator WEIMA WLK 1000 single-shaft shredder