Extrusion Asia Edition 2-2020

Especially in recycling applications, low material losses and in- frequent filter element changes are important in order to en- sure a high efficiency of the overall process. Therefore, the RSFgenius not only operates pressure- and process-constantly, but also carries out the cleaning of the filter elements fully au- tomatically by means of an integrated back-flushing system. For this purpose, a small amount of filtered melt is regularly shot through the dirty screen by a high-pressure impulse over a narrow gap. The quantity required for this is freely adjustable and in practice corresponds to about 0.01 to 1 % (with very high contamination) of the throughput. This means that the fil- ter elements can be reused up to 400 times, depending on the filter fineness, which means fully automatic filtration without the need for personnel for several weeks in some applications. Even the two major fiber producers in Belarus and China are convinced by the machine component “filtration system”, which is also available as a separate unit and can be integrated into any existing line. They use an RSFgenius 90 resp. an RSF- genius 175 according to their throughput capacity and thus en- sure a clean melt. This is especially essential for fiber produc- tion, as foreign particles could clog the spinneret and cause fiber breakage, which in turn would greatly reduce production efficiency. Further key components available With its enormous know-how in PET processing, Gneuss not only advises its customers – which is very important especially for retrofit solutions – the machine manufacturer is always working on the further development of its machine compo- nents. In addition to the online viscometer, which records and controls the melt viscosity during production and, via a control system, readjusts the entire process in case of fluctuating visco- sity, the polycondensation reactor Jump is one of the latest new developments. It is flanged directly to the extrusion unit and, with its sophisticated processing-technical concept, ensures a targeted viscosity build-up of the PET melt. The Jump thus re- presents a compact, economical and fast alternative to conven- tional SSP systems and enables the direct return of the residual materials into the production process. It can also be retrofitted to an existing line at any time. 41 Extrusion Asia Edition 2/2020 ➠ Gneuss Kunststofftechnik GmbH Moenichhusen 42, 32549 Bad Oeynhausen, Germany www.gneuss.com Our Mediakit 2021 is now available for download on our website www.smart-extrusion.com