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MACHINERY | FEEDERS


Right: A Motan Colortronic Spectroplus system


installed on a mezzanine over an extrusion line


remains dimensionally stable up to 90°C, it will be available for all models and sizes by 2021.


Compounding options Germany-based Motan-Colortronic says it has developed its Spectroplus dosing and mixing unit specifically to meet the requirements of the extrusion and compounding sector. The unit, which the company describes as “one of the most flexible overall systems in the Motan product world”, can handle virgin granulate, regrind, powder, liquids and flakes. It says it can be adapted to take on the most diverse dosing requirements. The synchronous dosing and mixing unit can be supplied in either gravimetric or volumetric versions, or a combination of both, and can be configured for both starve-fed and flood-fed applications. Up to eight dosing modules can be mounted on the frame, each of which can be easily removed and installed without tools. Exchangeable dosing modules and an easy-to-clean dosing hopper keep downtimes for material changeovers to a minimum, the company says. The Spectroplus design is highly compact. Simple individual adapters allow the unit to be mounted directly on the machine feeder of the extruder or on a customer-specific mezzanine. Compared with earlier products, the overall height is much lower although throughputs are the same. The unit also uses a new load cell arrangement.


Right: Motan Colortronic’s modular Spectroplus dosing and mixing unit configured with four dosing


modules and an additional liquid doser


40


“This consists of a combination of high-quality strain gauge load cells and a digital electronic transducer of the latest generation,” says the company. Benefits of the new system are said to include ease-of-assembly and calibration, long-lasting and low-maintenance operation, trouble- free signal transmission, and minimal susceptibility to external interference. Spectroplus dosing and mixing models also come with a completely new control system — Spectronet — which can control not only Motan dosing modules but also units from third parties. It is also said to support a broader scope of application.


Precision dosing Italy’s Piovan Group describes its Quantum gravimetric blender series as one of its top innovations in terms of materials handling, dosing, and mixing. “The ability of precisely dosing multiple ingredients, such


COMPOUNDING WORLD | November 2020


as virgin and recycled resins, along with master- batch and additives in a one-shot homogeneously pre-blended component is an important step ahead,” the equipment maker says. “The same applies to the continuous premix of the powders, such as fillers and pigments.” Piovan’s Penta subsidiary — which designs, manufactures, and installs automation systems for processing raw materials in powder form — recently introduced its Codomix technology. This simulta- neously doses, mixes, and conveys powders to feed compounders and other continuously-run- ning processing machinery in a loss-in-weight operation mode. It can also feed batch process- ing machines a premixed recipe. Penta says its localised, dedicated control of the dosing and premixing phases allows a much more efficient and stable compounding process to be maintained. The Codomix mixing technology is also claimed to provide a deeper and intensive


premix of ingredients, which results in improved dispersion into the molten resin.


Continuous solutions Azodos is a family of continuous dosing units for powdered products from German systems maker Azo that can be expanded and adapted to meet a wide range of


IMAGE: MOTAN COLORTRONIC


www.compoundingworld.com


IMAGE: MOTAN COLORTRONIC


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