RECYCLING | TECHNOLOGY
Development work in granulation technology is focusing on optimisation for feed material, ensuring quality
regrind and reductions in energy, noise and dust generation. By Peter Mapleston
Granulators get smarter and quieter
Manufacturers of beside-the-press granulators are taking measures to make equipment perform better and more energy-efficiently while being easier on the ear. They are improving insulation, for example, and they are also equipping machines with smarter controls so that they cut in a way that is gentler and also more appropriate for the type of material they are treating. In several examples on new models, this means running more slowly. Smart controls are also enabling granulators to be incorporated into factory-wide networks for improved supervision. K2019 saw Rapid Granulator unveil what it said was the biggest innovation in slow speed granula- tion in almost two decades. “Rapid OneCut Pro means less dust, less noise, less energy consump- tion and significant operational benefits,” the company said. OneCut Pro allows injection moulders to adjust
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the RPM range when granulating at a slow speed from the standard 25 RPM to a bandwidth of 15-35 RPM (+/-40% rotor speed), for optimal quality regrind. Rapid says: “The new machine, which uses the
new Rapid FlexiSpeed system, means less dust, less noise and significantly less energy consumption. For processors facing capacity limitations, operat- ing at a higher speed level will allow them to overcome capacity constraints, boosting opera- tional output. The torque level of the machine is maintained, regardless of the speed at which it is running.” The new machine features Rapid’s operator- friendly Open Hearted design, a patent pending QRR (Quick Rotor Release) system and the use of an innovative energy saving technology. Rapid says that while knife granulators are conventionally used for granulating softer materials and run at a speed
Main image: At K2019, Rapid Granulator launched the OneCut Pro system with adjustable speed for recycling injection moulding production waste
March 2020 | INJECTION WORLD 23
IMAGE: RAPID GRANULATOR
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