Extrusion International 3-2024

37 Extrusion International 3/2024 In terms of design, Bausano worked scientifically within very tight parameters in relation to both com- pression values and polymer dwell times. To achieve this, the collected information was initially processed using a Brabender plastograph. In detail, the starting materials were fed into the chamber, where they were heated and shear stresses were applied between two counter-rotating rotors. During this machining, the De - sign Team measured the torque applied to the rotating screws, thanks to which measurement it obtained infor - mation on the viscosity of the molten material and thus on any changes produced by machining on the system (gelation, branching, degradation). The Team involved in the project then conducted an in-depth analysis of the rheological curves with the help of a capillary rheometer and fluid-dynamic simu - lation software in order to optimise the design of the new extrusion head and screws, accurately predicting the material’s behaviour during the entire machining process. Technological excellence, the result of the com - pany’s consolidated expertise in the design of custom extrusion systems: Bausano’s novel solution features a multi-diameter head in C45 carbon steel, which is com - pact, modular, and chrome-plated in the surface where the material flows, and for the barrel and the nitrided screws. The latter, to be found in the S16 model, have been specially engineered to ensure high performance with different dry blend formulations. The line was also equipped with three volumetric dosing units, one for PVC, one stabiliser to prevent burns and one for the master, two reverse milling areas before degassing that increase and anticipate the feeding and gelling capac- ity, and end-of-line with tank, ink-jet marker, haul-off unit, cutting unit and belling machine. “The great challenge in terms of production efficien - cy, in the face of an increasingly diversified demand and tight delivery times, lies in being able to combine high variety and low production volumes, without compro - mising on quality,” says Massimiliano Fenili, Bausano’s Technical Manager, who concludes: “Bausano is com - mitted to building plants with an OEE value close to 80%, so that Customers can be increasingly flexible, en - ergy efficient, and with zero-waste production.” Bausano & Figli Spa C.so Indipendenza 111, 10086 Rivarolo Canavese (TO), Italy www.bausano.com Efficient Cable Recycling Loacker Recycling based in Wonfurt, Germany, is part of the Loacker Recycling GmbH family business headquartered in Götzis, Austria, and specialises in waste cable recycling. Thanks to the recycling concept developed in-house, the company can achieve the highest possible copper recovery at low processing costs. The company trusts in Lindner’s recycling expertise and uses a Polaris 2800 with rotor cooling. T he Loacker Group, based in Götzis, Vorarlberg (Aus - tria), has been dedicated to collecting, sorting and processing valuable materials for over 100 years and is motivated by one thought: The best for the world of to- morrow. Family-owned for five generations, the group consists of a total of 25 companies and operates 47 sites in eight countries. The recycling plant in Wonfurt has been recovering end-of-life cables for decades. These mostly come from the DACH region and are largely Shredding copper wire is a challenge in itself – but not with Lindner’s Polaris. The electric universal shredder has a countershaft belt drive with flywheel energy storage and therefore sufficient power reserves for a consistent throughput