TECHNOLOGY | GRANULATORS


Right: CMG’s EV 916 granulator has an open-type rotor design, in contrast to many high capacity heavy duty granula- tors equipped with solid rotors


says is roughly half that of a conventional unit. ROI is less than 12 months. “The Evoluzione series guarantees operational consistency and wear resistance of a higher degree, with its construction solutions that involve the use of harmonic steel, Hardox and assembled modular structures,” says Santella. “In addition to the preci- sion to the hundredth of a millimetre on the con- struction of the new cutting chamber, which allows a much longer duration of the blades when compared to conventional models, all the Evoluzione units are equipped with advanced controls, in the Industry 4.0 style, to make the machine functions 100% monitorable and manageable. Operating tempera- ture, blade wear, productivity, operational efficiency, energy use, all functional parameters managed on the machine or remotely, with connectivity based on the OPC-UA protocol, are just some distinctive features.” At K 2022, CMG is unveiling a new granulator


rotor design. It will be seen on an EV 916, the company’s largest granulator, but it will be used on models of all sizes. According to Santella, the new design “allows the rotor blades to cut the plastic feedstock perpendicularly against the bed blade, obtaining the highest degree of cutting penetra- tion. The rotor blade is mounted on the edge of the rotor holding modules and not on a holding block.” He continues: “The rotation of the rotor does not


produce the very detrimental ‘drag’ effect, meaning the mass of material being ground in the cutting chamber does not rotate with the rotor producing lots of dust. The rotor takes up only 30% of the cutting chamber volume, versus alternative ordinary granulators with 70/30 ratio. This feature alone allows more than double the quantity of material to grind in the cutting chamber.” (CMG also produces granulators for Piovan,


which markets them under its own label.) Getecha provides details of an extensive project it carried out for an important Dutch recycling company. Getecha’s large Rotary Cutter granulators provide the core of numerous recycling process lines. For this particular project the company supplied not only the granulators but also large parts of the conveying, dust extraction and packag- ing equipment. CVB Ecologistics, headquartered in Tilburg and


operating ten subsidiaries in various countries, recycles plastics and paper waste. After acquiring another recycling company, it decided to modern- ise and expand its facilities, and chose Getecha as its equipment supplier via Dutch distribution partner S-point. The project comprised the installa- tion of two new large granulators and the integra- tion of the existing shredding equipment, as well as conveying systems for granulator feeding, plus dust removal and packaging of the ground material. “One key requirement of the customer was the


expansion of the processing capacities by up to 2.8 tonnes per hour,” says S-point CEO Gern-Jan Drink- waard. He recommended the use of Getecha’s 6015 unit, fitted with a 132 kW motor, suitable for handling large parts. The cutting element of this hopper granulator has a 1,500 mm-wide five-blade rotor (diameter 600 mm) and three stator blades to provide a scissor cut. The RS 6015 handles both sticky flashes from blow moulding machines and scrap web rolls as well as solid panels or entire fuel tanks. In Tilburg, the 6015 unit handles polypropylene


Photo from the setup phase at CVB Ecologistics in Tilburg, Netherlands, shows the Getecha RS 6015 large granulator (green) with the conveying periphery (grey). A cyclone separator (also green) is also pictured


46 PLASTICS RECYCLING WORLD | September 2022


processing scrap, as well as worn plant markers from flower and herbs cultivation, boxes, cups and smaller lumps of PP as carton residues. Various adjustments were made to adapt the RS 6015 optimally to its tasks. “To prevent bridge formation in the funnel and to optimise throughput, the hopper was equipped with a press-down


www.plasticsrecyclingworld.com


IMAGE: CMG


IMAGE: GETECHA


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