MACHINERY | PELLETISERS
Right: Maag’s Duration blades are said to offer cost optimised performance for the most demanding pelletising applications
Last year, Swiss company Maag expanded its
portfolio of strand pelletising systems and brought in a number of new developments designed to provide its customers with an opportunity to improve their productivity. The first of these new innovations is an improved HE (High Efficiency) Air-Knife, which reduces residual moisture values of the polymer in water bath strand pelletising applications. While maintaining the same performance of the suction fan, the residual moisture of the pellets can be improved up to 40% compared to standard designs. The improved design only affects the suction box, optimising the air flow and dwell time of the polymer strands in the drying zone. This brings the advantages of the new HE-Dryer sharply into focus for potential retrofits on existing Air- Knifes, the company says. The improved design also results in better handling and extended lifetime of the suction grid. Another element that impacts on the efficiency
of strand pelletising systems is the cutting blade. Maag says it has developed a new blade option that maximises longevity and durability. It says its customers rely on the quality of its carbide and diamond blades, with carbide representing the industry standard with four cutting edges to dial. Switching to long-life solid diamond cutting blades may ultimately prove more efficient, but it says the initial investment can be prohibitive. Maag’s Duration solution represents a compro- mise between both blade types. Compared to the carbide cutting blade, the Duration design offers a much improved service life and good corrosion resistance in a more economical framework. The company says it can be considered as a strong alternative for polymer pellet producers that require better performance or durability than the carbide industry standard, but for whom switching to diamond cutting tools has previously not been an option.
Maag has also developed a new type of cutting
Right: Nordson’s solenoid
locking system for its UWG underwater pelletiser simplifies operation and improves safety
IMAGE: NORDSON CORPORATION 42 PLASTICS RECYCLING WORLD | January/February 2024
rotor — named Tiger — to act as a counterpart to the new cutting blade. There are currently three types on the market; solid rotors, tipped rotors, and carbide rotors, with the latter topping the list in terms of service life. The new cutting rotor is a solid type that has been designed to offer the durability required for production of abrasive polymer compounds.
Italian company Filtec, which produces a range
of highly customisable products for pelletising plastics, celebrated its 30th anniversary this year. The most recent addition to its product line-up is the UW LAB, which is said to pack all the primary features and benefits of its larger UWG models — including high energy efficiency — in a more compact arrangement. The UW LAB provides a maximum production capacity of 40kg/h and has been specially designed for tasks such as labora- tory test runs, researching new materials, and producing small quantity demonstrative batches.
Safer operation One of the most valued customer requirements of pelletising equipment is simple and safe operation and handling, according to Nordson. So, it has designed a new locking system for its compact UWGs that offers smoother coupling to the water box. The company says that its previous locking system included a clamping flange that required the operator to reach over the machine in order to connect the component parts of the lock. Its BKG A, AH, and compact pelletisers are now equipped with a safety solenoid interlock. This makes connection of the pelletiser to the water box a simple one-step task that it claims is easy as closing a fridge door. Once the connection is made the safety lock activates and releases the start signal. After start-up, the safety lock remains active until the pelletiser motor has completely stopped. The company says the new design is safer and easier to use, while supporting shorter start-up and shut-down proce- dures, and enabling automatic production start-up.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.pelletizing.de �
https://bayplasticsmachinery.com �
https://maag.com �
www.filtecsrl.eu �
www.nordson.com
www.plasticsrecyclingworld.com
IMAGE: MAAG GROUP
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