MRS Extruder fully established with extended field of applications and high throughput ratesSince the last K Show, the Multi Rotation System extruder has established itself as one of the key technologies for processing PET reclaim without pre-drying. About 40 of these special extruders have been sold for sheet, fiber and repelletizing applications in Europe, Asia, North and South America. The extremely high devolatilizing and decontamination performance of this technology has convinced more and more processors. Thanks to the patented combination of single screw extruder with a multiple screw section, the extruder is particularly rugged, as well as easy to operate and maintain.
All model sizes, from the MRS 35 for 35 kg/h to the MRS 200 for 2000 kg/h, have now been built and are in successful operation in various applications world-wide. These are not only PET processing applications, but there are also some references in polyamide and polyolefin processing.
At this year’s K Show, one complete extrusion line and one Multi Rotation System Extruder MRS 160 with a throughput of 1.4 t/h will be on display.
The extrusion line consists of a Multi Rotation System Extruder MRS 130, a Fully-Automatic Filtration System RSFgenius 200 and a Fully-Automatic Filtration System RSFgenius 250. This line has a tandem filtration system because it will process up to 1000 kg/h of PET bottle flake directly into continuous filament which requires 25 micron filtration.
One major advantage of the MRS Extruder is that it permits the processing of PET without pre-drying but by using a simple water ring vacuum system to process the PET to a high quality product. This is achieved by means of its unique and patented processing section. Based on a conventional single screw extruder, the Multi Rotation Section (MRS) is a drum containing eight satellite single screws, driven by a ring gear and pinion transmission. The “barrels” cut into the drum are approximately 30% open and provide optimum exposure of the melt.
