increases as well. These are often not large, structured organisations, but rather small start-ups with limited investment capacity. All of those need small to medium capacity recycling-grade equip- ment, that are difficult to procure as suppliers of recycling equipment focus on large scale installations, says Santella. CMG Granulators says that it has

been particularly active in the past three years with new developments: “In the field of plastics recycling, CMG Granula- tors has always been a supplier of large capacity heavy duty recycling grade granulators and we have recently introduced two new machine series. The Evolution line provides highly energy-efficient solutions that deliver the highest industry input/output ratio. In addition, we have a new medium capacity series that offers all the features a recycling grade machine must have, but for intermediate capacity applications – a ‘starter-kit’ for small companies.” In the Evolution series CMG has introduced the EV916 and

Above: CMG Granulators has introduced the EV916 to the Evolution series

Right: The G17 series from CMG Granula- tors offer a high degree of regrind

dimensional homogeneity, small regrind dimensions and no powder

EV616 models, which offer solutions suitable for the most critical operating conditions. This includes wet or dry granulation, which require high perfor- mance characteristics such as a granulation capacity from 2,000 kg/h to over 5,000 kg/h, versatility, efficiency and sustainability. The com- pany adds that the series provides operational consistency and wear resistance of a high degree, with construction involving the use of harmonic steel, Hardox and assembled modular structures. The new cutting chamber is precision manufac- tured to hundredths of a millime- tre, which allows a much longer blade lifetime when compared to conventional models. All the models are equipped with ad- vanced controls – Industry 4.0 compliant – to make the machine functions 100% monitorable and manageable. All functional parameters including operating temperature, blade wear, productivity, operational efficiency and energy use are managed on the machine or remotely, with connectivity based on the


OPC-UA protocol. All CMG units for recycling applications, with capacities of 800 kg/h to over 5,000 kg/h, feature the Adaptive Motor Power (AMP) function. This allows the granulator to establish autonomously which power level to adopt to carry out the work, according to quantity of material to be ground, shape, weight, thickness, type of plastic, and temperature of the piece. The AMP optimises the quality of the regrind material in terms of dimen- sional and physical homogeneity of the regrind particle and absence of dust, as well as minimising the use of electricity. The CMG granulator uses 20-25 Wh/kg compared to over 40 Wh/kg for a conventional unit. Return on investment for the AMP is less than 12 months, says the company. A further company development is the Bio-Gran

line. The Bio-Gran is designed for use in the production of biodegradable flexible packaging and allows the immediate recycling and reintro- duction of both production scrap and rejects. Biodegradable plastics have physical characteris- tics that do not match those of conventional polymers. In addition, the processing of biode- gradable plastics is also unique, as they are susceptible to heat and mechanical stress. The availability of technologies to handle post-industri- al scrap or rejects is minimal, says the company. Conventional granulation equipment cannot handle biodegradable production rejects ad- equately. Consequently, they are not reintroduced in the production process. The new Bio-Gran technology is designed to accomplish the objec- tive of allowing recycling and reintroduction of the production rejects at the production site, by performing adequate size reduction and consequential storage/ handling/processing so as not to compromise the integrity of the

polymer. The reject rate, predominantly deriving from the

post-production finishing phases of the product, can be of a few percentage points up to tens of percent- age points. The technology is designed to handle small to large quantities of biodegrad- able polymer effectively and dependably, preserving all physical and mechanical characteristics of the polymer itself. The first Bio-Gran units are now in operation at

industrial sites producing biode-



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