MATERIALS | MATERIALS HANDLING


The expansion to upstream machines, such as vacuum conveyors, is also now available in the feeder control and the OP16 control unit. This provides customers with a control for both machines from a single source, allowing them to optimise refill processes.


Above: Coperion K-Tron’s SWB-300 weigh belt feeder promises high accuracy and efficient process control


receivers are made of stainless steel, and their features include steep cone angles – to ensure efficient discharge – and band clamps for quick disassembly.


Also on display was the company’s SWB-300 weigh belt feeder, a reliable gravimetric feeder for high accuracy and efficient process control that is quite simply constructed,. Weigh belt feeders of this type can feed large volumes of bulk materials with various flow properties and are well suited for, among other things, processing recyclates, said the company.


Another materials handling solution is


Fluidlift Ecoblue, a pneumatic conveying process for plastic pellets that increases efficiency and minimises degradation. In contrast to conventional designs, it reduces


abrasion – which cuts the generation of dust or strands to maintain product quality and reduce waste accumulation. It also enables plastics manufacturers to lower costs and increase throughputs, thanks to low energy consumption.


Feeding time


Above: Moretto’s DGM Gravix batch gravimetric dosers promise high accuracy and precision


Right: Brabender has redesigned two of its feeders,


including the DSR28


Brabender Technologie has redesigned two of its feeders – the DSR28 and DDSR20. As well as having a new type of gearbox, the machines use a number of new components that allow easy cleaning. Both were displayed at K2019, along with


different possible motor types – such as the new motor with extended adjustment range (1:100). The company has also developed a new OPC-UA interface, which it says is a key step towards Industry 4.0. The new interface transmits process and control data in a service-oriented architecture, opening up new possibilities for customers, says the company.


22 FILM & SHEET EXTRUSION | May 2020


Conveying and dosing Moretto of Italy showed a range of its materials handling technologies – including dosing and conveying – at K2019. To manage and supervise the conveying


process – of small or large quantities of plastic – its One Wire 3 system ensures high transport efficien- cy, thanks to its FIFO logic. One Wire 3 also controls the devices, which contribute to optimis- ing the granule conveying and feeding process. In particular, the Dolphin manifold unit automatically supplies and distributes all the materials to all the machines, avoiding the risk of contamination and human error. Kruise Kontrol (KK), patented by Moretto, can manage material speed during the conveying phases. This eliminates the formation of angel hair and wear of the pipes. It acts differently to typical inverter systems that simply act on air speed, but do not account for numerous other variables that characterize each material, Moretto – pointing out that KK controls more than 15 parameters. Its DGM Gravix batch gravimetric dosers promise high accuracy and precision – up to 0.01% – thanks to its Vibration Immunity System and double eyelid system. They cover dosing requirements for granule, powder and flakes, with dedicated applications, up to 12 materials and 12,000 kg/h. The company also offers its DPK weight-in-loss dosing system, for dosing small amounts of masterbatch or additives. The technology of the load cells – and the control algorithm – give it a dosing accuracy of ±0.03%. The masterbatch or additive to be dosed is contained in a hopper built in a specific transparent resistant acrylic material, free from electrostatic charges, which makes immediately visible the content material and the level of load and avoids the stop of material on the hopper walls. The hopper is easily removable without the use of tools and, together with the intelligent storage and


recognition system of the masterbatches alongside the machine, the


recipe change is even more immediate, says Moretto.


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