RSFgenius rotary filter
Gneuss’ top model, the RSFgenius rotary filter, is also used in the OMNIboost. This model operates with an integrated backflush system for self-cleaning for very demanding applications and highest quality requirements. The screens can be automatically reused up to 400 times and filter finenesses below 10 µm are possible.
The OMNIboost PET recycling system features a JUMP polyreactor that can raise the IV value of a PET melt up to 0.95 dl/g. In the JUMP, the polymer passes over several slowly rotating elements that create a polymer film whose surface is constantly renewed. The reactor vessel is under vacuum, reliably removing volatiles. By controlling the residence time in the reactor, the vacuum, the filling level and the rotation speed of the agitators, the polycondensation reaction can be influenced to achieve the desired product properties. The JUMP is a robust and reliable liquid phase polycondensation (LSP) system and a compact, fast and efficient alternative to conventional solid state systems (SSP). It allows the polymer to be reintroduced directly into the production process without the need to remelt the PET.
In order to be able to extract volatile impurities, Gneuss has developed specialized vacuum systems, some of which have patented separation systems. Due to the large melt surface in the extruder, the suction capacity is much higher than with conventional systems, so that large quantities of volatile impurities can be extracted from the polymer melt and separated from the vacuum stream by separation systems. In addition to a water ring pump vacuum system, Gneuss also offers deep vacuum systems with corresponding separation devices.
Online Viscometer VIS
If required, the OMNIboost PET recycling machine includes an online viscosity measurement system that enables precise measurement of the melt viscosity. Using a high-precision, high-conveying gear pump, a small partial flow of the polymer melt is diverted from the main melt channel and then forced through a precisely manufactured slotted capillary. The viscosity measured there is directly related to the molecular chain length, on which in turn the mechanical properties such as tensile strength and stiffness depend. Quality assurance can be improved by recording and storing this data through the viscometer.