Extrusion International 1-2023-USA

33 Extrusion International 1/2023 ensures both a longer residence time of the material and more sur- face area exchange under vacuum. The longer Multi Rotation Section, coupled with a powerful vacuum system operating at 1 mbar, can be used to boost the viscosity of R-PET and to hold it at a stable level in spite of variations in the input material. Therefore, there is no need for any liquid phase (LSP) or solid state po- lymerization (SSP). With the stabili - zation and/or increase of the intrin- sic viscosity in the extrusion process, theMRSjump is especially well suited to recycling e.g. PET film waste or fi - ber reclaim – applications for which direct recycling with one single ex- trusion step was previously impos- sible due to low intrinsic viscosity or variable input viscosities. In combi - nation with Gneuss’ Rotary Filtra- tion Technology, a high melt purity is guaranteed. Quality assurance can be provided with an online viscom- eter VIS for measuring melt viscosity. As demand for PET bottle flakes outpaces supply and processors are looking for alternative feedstock (e.g. to fullfil recycled content man - dates) the MRSjump offers an excel- lent solution for PET thermoform, film or fiber recycling, while the newly developed MRS cutter com- pactor makes it possible to use low bulk density materials. OMNIboost Recycling Machine including polyreactor JUMP The OMNIboost Recycling Ma- chine with an polyreactor JUMP processes PET waste, whether form from industry or postconsumer, di- rectly into high-quality products. The integrated JUMP can lift the IV value of a PET melt up to 0.95 dl/g. In the JUMP the polymer passes over several slow turning elements which create a polymer film, the surface of which is constantly re- newed. The reactor vessel is kept under vacuum, through which volatile substances are reliably removed. By regulating the resi - dence time in the reactor, the vacuum, the fill level and the speed of rotation of the agitating devices, the polycondensation reaction can be altered to achieve the required product properties. The JUMP is a robust and reliable liquid state polycondensation system (LSP) and a compact, quick and efficient alter - native to conventional solid state systems (SSP). It enables direct re - introduction of the polymer into the production process without the need to remelt the PET. Filtration Technology Tailor-made retrofits of pressure- and process-constant Rotary Filtration Systems The continuous Rotary Filtration Systems are characterized by a filter disk on which the screen cavities are located in a ring pattern. Screens can be changed on the part of the filter disk that is not active in the melt channel, while the production process continues to run without any interruptions or disturbances. Gneuss’ top model, the RSFge- nius, operates with an integrated back-flushing system offering self-cleaning for very demanding applications and highest quality requirements. Screens can be auto - matically re-used up to 400 times and filtration f i n e n e s s e s below 10 mi- crons/1200 mesh are available. Retrofitting a fully- automatic RSFgenius to an existing extrusion line, whether in a pelletiz- ing, sheet, fiber or pipe application, permits the use of more contami- nated (and often cheaper) material and/or the use of finer screens. Ev - ery retrofit is tailor-made and usu - ally without the need to move any existing equipment. Measurement Technology Measuring Technology for Extrusion – Flexible, Fast, Safe, Digital Gneuss provides flexible sensor so - lutions for pressure and temperature measurements, individually tailored to your application. Abrasion, corro - sion, temperature, Gneuss offers the right solution for every challenge. Gneuss delivers fast. Whether standard sensor or application-spe- cific customized solution. The flex - ible manufacturing structure allows shortest delivery times. Gneuss creates safety. In addi - tion to standard-compliant pressure monitoring, Gneuss offers the nec- essary quality assurance of the mea- suring equipment. Gneuss is digital. The latest gen - eration of Gneuss sensors and pres- sure monitors communicates com- pletely digitally. Integrated RFID chips for digital gauge monitoring are available for all sensor models. Gneuss Kunststofftechnik GmbH Moenichhusen 42, 32549 Bad Oeynhausen, Germany www.gneuss.com Gneuss at Chinaplas 2023: Stand 10H31 Picture 3: Patented Rotary Filtration System RSFgenius Picture 4: Gneuss sensors with digital gauge monitoring