News for the plastics and rubber industry. Macplas
Technology Tuesday, 8 March 2022

Gneuss at Greenplast with new extruder and rotary filtration systems

At the Greenplast show, scheduled in Milan from May 3 to 6, Gneuss is presenting its brand new MRSjump extruder. As with the proven MRS extruder, the extrusion process does not require any pre-treatment of the input material, such as crystallisation or pre-drying of the material. Short residence times, low thermal and mechanical stress on the melt and highly efficient degassing have characterised MRS technology for decades.

 

With the new MRSjump extruder, the unique MRS screw section has been modified and extended so that, in combination with a 1mbar vacuum unit developed for this purpose, the viscosity of the polyester can be raised or stabilised to the desired level directly in the extrusion step. A downstream IV build-up in a solid state polycondensation (SSP) is not necessary. For the first time, the processing of materials with low or highly fluctuating input viscosities is possible in a single extrusion step. The extremely compact design of the MRSjump extrusion line requires little space, energy and maintenance compared to other solutions on the market.

 

Gneuss Filtration Technology is also introducing an additional size across its line of rotary filtration systems. The models RSFgenius, SFXmagnus, SFneos and CSFprimus are now available in a size 110, which offers almost 20% more active screen area than the size 90 for each model, depending on the specific model. In the past the next size-up was the size 150, with a jump of more than 50% in active filtration aera. The new intermediate size will ensure an optimized and cost-efficient filtration solution for every application.

 

Rotary Filtration Systems operate continuous, automatic, process and pressure constant. They 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 Melt Filtration Systems can be easily integrated into an existing process and are perfectly suited as a retrofit solution.e.g. for demanding recycling applications. The various models differ in terms of e.g. drive design, encapsulation and whether they offer integrated back-flushing.