Extrusion International 6-2022

41 Extrusion International 6/2022 plastics recycling for many years. The new series impresses with its powerful, gearless direct belt drive, the adjust- able safety clutch that protects against non-shreddables and the unique adjustable knife system. The new model makes it possible to increase the throughput, leading to the improved productivity demanded by the market – the throughput for processing recyclable bales, for example, was raised from 3 t/h to 5 t/h. Another new feature is the automatic belt tensioning system, or ATB, which guar- antees an optimal operating point, making the process more energy efficient and almost eliminating the need for maintenance – both welcome developments considering energy costs and the shortage of skilled labour that also affect the recycling industry. The demands placed on recyclate quality and through- put are increasing. Energy costs are to be reduced. Overall, these are no easy tasks considering the rising energy costs and the fact that plastics are increasingly extracted from waste streams, meaning that heavily contaminated input materials are finding their way into plastics recycling more and more. Lindner provides the solution to these challenges with no less than two new products: the patented Rafter-type pre-washing system and the new EcoDry thermal dryer. As part of the VDMA Circular Economy Forum, Lindner once again showcased its products in the outside area at K 2022, this time with three live demonstrations dai- ly. The new Micromat HP shredder, the Twister friction washer and the mechanical Loop dryer demonstrate the process stages of shredding, washing, drying with inte- grated water treatment processing post-consumer rigid plastics. As a special highlight, the shredding of post- consumer plastics, called dolly pallets, provided by Engel, took place daily. Together, Lindner and Engel showed how, with a residual moisture of <1% and a uniform par- ticle size of 8 mm, homogenous and clean plastic flakes can be directly processed further in a two-stage injection moulding process. In partnership with the other plastics recycling leaders Erema, ExxonMobil and Engel, visitors could also learn more about the Atando Cabos project in Lindner’s outside area. The company Comberplast in Chile clears the coasts of broken fishing nets and ropes, turning them into new products such as crates for tulips or a well- known brew- ery. A demanding shredding task, considering that fishing nets and ropes are designed for robustness and durabil- ity and that the collected materials contain many abrasive substances such as stones and sand. Lindner’s Micromat was commissioned remotely in 2020 during the pandemic and has been supporting Comberplast in the daily produc- tion of new precious materials ever since. Lindner-Recyclingtech GmbH www.lindner.com After the bale opening, the films are shredded to an exact size of A4/A3. This enables downstream NIR systems to optimally recognise materials and sort them more efficiently The percentage of fines in film recycling with conventional shredder parameters The special shredder set-up of the new Jupiter BW series reduces the proportion of fines that are unusable for the recycler, and which have to be disposed of, by 44% The new Jupiter BW series from Lindner has a shredder set-up specially tailored to film recycling. The exact particle size of A4/ A3 perfectly meet the requirements of the NIR systems and the fines are reduced by up to 44%