Extrusion International 5-2025-USA

30 Extrusion International 5/2025 К 2025 Revolutionising Extrusion Efficiency – Unlocking New Potential in Existing Processes with Melt Filtration and Extrusion Technology I n an era of global uncertainty, ex- trusion processors face mounting pressure to reduce costs while main- taining quality and output. Gneuss offers a powerful solution in the form of advanced melt ltration and ex - trusion equipment that can be inte- grated into existing lines to achieve signi cant ef ciency improvements. These gains translate into measurable cost savings and a stronger competi- tive position. With reliable, exible systems designed for minimal down- time, Gneuss helps processors unlock hidden potential within their current operations. Gneuss Filtration Technology Gneuss’ agship model, the RSFge - nius ensures a rock-steady melt pres- sure even when processing recycled material, thanks to its highly-ef cient, automatic, integrated self-cleaning system. This makes it predestined for a wide range of demanding ap- plications. The lter elements can be automatically cleaned in situ up to 400 times and lter elements as ne as 10 µm (1.200 mesh) can be applied. The RSFgenius 330L which will be displayed at the K show is one of the best-selling (and at the same time one of the largest) RSFgenius models. The unit on display has an active ltration area of 2.150 cm² and is for LDPE/ LL- DPE lm recycling with a ltration neness of 75 µm. Retrofitting a fully-automatic RSF genius to an existing extrusion line, whether in a pelletizing, sheet, ber or pipe application, permits the use of more contaminated material and/or the use of ner screens with - out disrupting the process or reduc- ing production yield. Every retro t is tailor-made and usually without the need tomove any existing equipment. Three further Gneuss screen chang- er ranges will be represented at the K show, the SFX magnus , SF neos andKSF screen changers. The SFX magnus is a process-constant screen changer for a wide range of applications, the SFneos is a specialised screen changer which offers an extremely high level of process and pressure- stability, equivalent to that of- fered by the RSF genius . This way, Gneuss can cover a huge range of applications, where self-cleaning is not necessarily required. Wheth- er bre extrusion, cast lm, blown lm with its high pressures, sheet extrusion of all kinds and even PVC recycling. Last but not least, the KSF range of screen changers is process-constant and designed with extremely sensitive poly- mers in mind. It is mostly used in compounding where its uniquely cus- tomisable design for unbeatably fast material and grade changes is a major advantage. All three ranges of Gne- uss screen changers have in common that they operate pressure and time- controlled, process-constant and that screen changes are made without dis- turbing the process. Multiple screw extruder MRS The MRS extruder is based on con- ventional single screw technology but is equipped with a multiple screw section for devolatilization. It enables very ef cient and gentle decontami - nation of the polymer melt. The MRS extruder permits the processing of R-PET directly into high quality end products such as packaging sheet, strapping tape or laments without pre-drying by using a simple and rug- ged vacuumsystem. All this is achieved by means of its unique and patented processing section. The Multi Rotation Section is a drum containing multiple satellite single screws, driven by a ring gear and pinion transmission. The satellite screws rotate in the opposite direction to the main screw. This disproportionately increases the surface exchange of the polymer melt. A large opening for venting, exposing the full length of the satel- lite screws, is under vacuum. This pro- vides excellent and unrestricted ac- cess to the polymer melt, the surface of which is constantly replaced at a very high rate by the counter-rotation of the satellite screws in the multiple screw section. The surface area – and the surface area exchange rate – avail- able for devolatilization are far great- er than in other extrusion systems. As the thermal and mechanical stress on the polymer melt is minimized, re- claim processed on the MRS extruder Patented Rotary Filtration System RSFgenius 330