GRANULATORS | TECHNOLOGY


Matsui develops new deduster technology


Ensuring stable material conditions is crucial to keeping your granulator running. A big part of this relates to viscosity. To ensure lower variance of viscosity,Matsui has formulated two solutions: the ARV Aero Remover, and the Magic Catch. The new ARV Aero-Remover aims to eliminate powder and fines


contamination. Traditionally, dedust- ing occurs during the vacuum-trans- port delivery or relied on shaking dust off the pellets. But thanks to its unique cyclone filtering design, the ARV can efficiently remove contamination on the material itself and not only in the vacuum line. Matsui’s in-line metal removing unit


maximum torque for the granulation of hard and brittle materials, as well as those filled with glass fibre. Low granulator speed also means less wear on cutting tools for reduced maintenance, low sound levels, and low energy consumption. The low speed also decreases flyback during operation and provides more consistent and better quality regrind. The optional feeding shaft is independent- ly driven and has elongated hooks to pre-cut the plastic parts/runners and push them into the cutting chamber for subsequent feeding, reducing the dimensions of the parts. This promotes the use of a smaller granulator, saving capital expenditure.


Improved cutting


Austrian injection moulding and thermoforming specialist Lechner recently linked up with consult- ants from Büchler, which represents granulator manufacturer Getecha in Austria and Hungary. Project Manager Bernhard Lechner explainsed: “To optimise internal material processing in the two halls at our main factory in Bad Vöslau, we needed multiple state-of-the-art standard granulators for efficient granulation of various scrap material from component manu- facture and film processing. After extensive requirement analysis, we selected two granulators of the RotoSchneider generation; a type RS 45090 hopper granulator and a type RS 30090-E infeed granulator.” The RS 45090 is used by


Lechner as a central granula- tion station. It has a cutting width of 900 mm and processes round, square, and heavily ribbed production scrap with an hourly throughput of up to 900 kg. “As the ideal addition to its RS 45090, Getecha also provides a side bypass hopper to feed through long parts. This saves us having to


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comes in two variations: 7,000 Gauss (Magnet Stick) or 13,000 Gauss (Magic Catch). It is available in several configurations and specifications and can be adapted to suit different customer´s needs with the aim of preventing metal particles entering the final product or problematic production areas.


purchase another granulator,” said Lechner. The grinding chamber features a triple-blade


rotor with oscillating weight and additional third stator blade. This robust configuration improves the processing of heavily ribbed components and prevents remnants from dropping too deep, signifi- cantly increasing overall efficiency of the granula- tion process. The inside of the hopper and the granulator housing are both equipped with hardened wear protection plates, which can be replaced when worn. Another important aspect is the integration of a new hopper granulator into the existing disposal/cycle processes at the customer’s factory. To facilitate the use of an independent and self-cleaning vacuum conveyor station, Getecha engineers modified the suction tub of the RS 45090 and equipped it with a fill level sensor. Lechner is using vacuum moulds to process PET and compound films with thicknesses up to 2.5 mm for large-scale production parts. To dispose of scrap web and faulty parts, the company opted for an infeed granulator designed and sized to process scrap material and hybrid films together with cardboard packaging. The hourly throughput rate is up to 670 kg. Many of the latest granulators to hit the market feature improved cutting technologies, allowing for greater durability and precision in the size and shape of granules produced. High-performance materials and advanced geometries contribute to prolonged operational life,


reduced maintenance, and enhanced performance. Additionally, customisable


settings enable operators to adjust parameters such as speed, cutting chamber size, and screen configurations to achieve optimal


results with different materials.


Left: Wittmann S-Max Dual 6 granulator


� September 2024 | PLASTICS RECYCLING WORLD 39


IMAGE: WITTMANN


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