Extrusion International 5-2023

30 Extrusion International 5/2023 FAKUMA 2023 Super Clean Recycling Technologies – High Performance OMNI Recycling Systems for Today's and Tomorrow's Increasing Recycling Requirements With its innovative OMNI recy- cling systems, Gneuss offers highly efficient solutions for today's and tomorrow's recycling requirements. Thanks to the company's many years of experience in recycling, the technological components of the OMNI recycling systems have been matched to each other in such a way as to achieve a level of performance previously unattained on the mar- ket and to achieve super-clean re- cycling qualities in just one process step. The OMNI recycling systems con- sist basically of an MRS extrusion system, a fully automatic RSF genius melt filtration system, an online vis - cometer and optionally a 3C Rotary Feeder. Polymer reclaim such as fi - ber waste, thin film or other low bulk density waste is fed into the Gneuss 3C Rotary Feeder. PET post- consumer and industrial waste does not require thermal pre-treatment. A conveyor belt feeds the material into the 3C Rotary Feeder, which cuts, compacts and conditions the material and feeds it directly into the MRS extruder. The MRS extrusion technology in the OMNI recycling line is based on conventional single-screw technol- ogy, but is equipped with a multi- screw degassing section. The degas- sing section of the patented process unit consists of an enlarged single screw drum with a series of satel- lite screws that rotate in the oppo- site direction of the extruder barrel, creating a very large melt surface area and ensuring very rapid sur- face exchange. This provides un- precedented melt phase degassing performance with minimal material stress. Multiple Letters of Non-Ob- jection (LNOs) from the FDA, EFSA compliance and local approvals in Latin America confirm the high de - contamination performance of the technology. After passing through theMRS ex- truder, the polymer melt is filtered by the highly efficient, self-cleaning Gneuss RSF genius melt filtration system. This system ensures that fine filtration is possible without pressure or flow disturbances and with minimal polymer losses, even at high contamination levels. The RSF genius works with an integrated backflush system for self-cleaning of the screens for very demanding applications and highest quality re- quirements. If the recycled material to be pro- cessed requires a particularly high decontamination and degassing performance, the OMNI max recy- cling system is used with a longer, modified version of the Multi Ro - tation Section in the MRS extruder, which ensures both a longer resi- dence time of the material and a dis- proportionately high surface area exchange under vacuum. The OMNIboost recycling system is specifically designed to recycle PET waste. The integrated Gneuss JUMP polyreactor raises the IV value to the desired level within minutes. After leaving the MRS extruder, the poly - mer flows directly into the reactor in the melt phase, while the viscosity of the melt is tightly controlled. By con- trolling the vacuum, residence time and surface exchange rate in the re- actor vessel, the viscosity is adjust to the desired level. With a consistent set viscosity, themelt can then be fed directly into the production process. By ensuring that the polymer re- mains in the melt phase from the ex- truder to the final processing stage, the OMNIboost recycling process is the fastest and most efficient way to recycle PET when viscosity increase is required. Gneuß Kunststofftechnik GmbH www.gneuss.de Fakuma: Stand A6-6501 OMNImax Recycling System including 3C Rotary Feeder, MRS Extruder, deep vacuum system, Rotary Melt Filter RSFgenius and Online Viscometer VIS