WASHING | INNOVATION


arrangement enhances accessibility to the knives and sieves, allowing user-friendly operation. A gearless belt-driven propulsion system in combination with a mechanical clutch, offers additional protection against damage caused by foreign bodies. The rotor can be equipped with variable knife configurations, with easy-to-change armour- plating as an option. In order to obtain high quality of the final product, a hydrocyclone is used instead of a conventional separation tank. This achieves higher separation levels and exerts more friction on the material, which produces purer flakes. These improved outcomes were confirmed prior to the purchase through tests carried out in the Herbold test centre.


Herbold has also installed a new hot washing system in its test centre to meet growing demand for high quality recycled plastics that offer similar properties to virgin materials. For several years,


IMAGE: HERBOLD MECKESHEIM


Herbold has operated a washing test centre on an industrial scale in which customers, potential buyers, planners and researchers can test and simulate recycling processes beyond laboratory level. This plant is going to be expand- ed with a suitable hot washing step.


According to Achim Ebel,


division manager for washing plants, the new hot washing system replaces the previous pilot plant that has been used for developing hot washing technology for polyolefins. The new system is more than a simple hot washing reactor and represents the latest technology that is also installed in large scale plants. The plant allows customers to test the treatment


of rigid plastics and films with an output of up to 1,000 kg/h in the hot washing system. It has been designed for continuous operation and operates in line with the existing hydrocyclone washing plant. The facility can verify whether and how an improve-


Left: Herbold Meckesheim has installed a new hot washing


system in its test centre


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