MATERIALS | MATERIALS HANDLING
Each drying container receives warm air from the CHP at 75°C instead of the usual 40°C and it is then heated up to the desired drying temperature of 80-90°C. The dryer’s heater is used much less frequently, which provides a significant reduction in energy costs. CHPs are not often employed, but when they are, the use of the available heat is a good solution. Koch says that it has also achieved large energy savings with its KEM direct colouring units. Through the introduction of a touch panel with a stepper motor on the KEM, the speed-controlled motor saves around 70% of the energy compared to the previously used gear motor and masterbatch metering is even more precise. Maguire Products has purchased a minority
Right:
Movacolor has launched a new version of its micro dosing system MCNexusr
share of OA Newton, a provider of bulk material handling systems to the wood-plastic composite, flexible and rigid PVC, and carbon black markets. Based in Delaware, USA, OA Newton engineers, fabricates, and installs complete systems for the unloading, storage, conveying, and blending of process ingredients, including controls and ancillary equipment. The company will continue to operate separately from Maguire Products, but the investment has the potential to expand the capabilities of Maguire in the material handling phase of the process industries. In addition, Maguire Products has introduced the Bridge Breaker for its three largest blender series, those with maximum throughput capacities of 5,000 kg/h (11,000 lb/h), and capability of blending up to 12 ingredients. The Bridge Breaker consists of a hopper insert that directs material straight down onto the dispensing valve. It also has a rotary device that operates automatically while the dispense valve is open. The device rapidly pulses between clockwise and counter- clockwise movement, enhancing material flow through the dispense valve. The hopper insert, which provides a vertical alternative to the sloping wall of the hopper, can be retrofitted in any blender currently in operation. To make up for the space occupied by the insert, the complete hopper assembly includes an extension to accommodate the desired quantity of material. “The new bridge breaker
addresses the growing demand for recycled content in plastic products and the increasing use of regrind as a means of reducing production costs,” says Frank Kavanagh, Vice-
48 INJECTION WORLD | September 2021
President of Sales and Marketing. “More and more processors have been finding it a challenge to keep such materials flowing consistently. In fact, we developed the bridge breaker to help one of our customers solve a problem with trim scrap.” The three large-capacity Maguire blender
families, the 1200, 2400, and 3000 Series, blend up to 12 ingredients, using a wide range of removable hopper and feeder configurations and numerous dispensing devices. The blenders handle raw materials in a variety of forms, includ- ing regular pellets and regrind, bulk powders, flake, and ingredients that are especially bridge- prone, such as wood flour. Like other Maguire weigh scale blenders, once all ingredients are dosed into the weigh chamber, the batch falls into a mixing chamber. A microprocessor makes corrections from batch-to-batch, including adjustments to compensate for variations in extrusion rate or bulk density, maintaining overall batch accuracy to within ±0.1%. Movacolor has developed a new version of its
software for dosing plastic additives. The new software includes extra features such as sensor neck integration, fast calibration options and a single shot test button for taking verification samples. It is also now possible to contact the support staff from Movacolor directly via remote control. The company adds that the development has allowed it to serve its customers remotely during the Covid pandemic, with the software able to temporarily take control of a machine. The new software is available in 20 different languages and is also provided free of charge. The company adds that the MCTC 8-in touch
screen controller plays an important role in the reliability and stability of the dosing process. The robust, easy to start-up (and operate) controller works under all circumstances in injection moulding and extrusion applica- tions. Features include quick calibration, recipe storage, manageable user levels, EBM synchronisation and sensor neck control. The MCTC touch screen controller is equipped with MCConnect, which connects the controller directly with Movacolor Expertise Centre via remote control plugin. Movacolor has also launched
a new version of its micro dosing system MCNexus. The modifications in the design of the optometric dosing
www.injectionworld.com
IMAGE: MOVACOLOR
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