Gneuss @ Index20: Extrusion, filtration and m...
Gneuss @ Index20

Extrusion, filtration and measurement technology

Gneuss MRSjump Extruder (Source: Gneuss)
Gneuss MRSjump Extruder (Source: Gneuss)

PET fiber to fiber recycling
The new MRSjump extruder will be highlighted by Gneuss Kunststofftechnik GmbH, Bad Oeynhausen/Germany, at the Index trade fair in Geneva/Switzerland from October 19-22, 2021. As with the proven MRS extruder, the extrusion process does not require any pre-treatment of the input material, such as crystallization or pre-drying of the material. Short residence times, low thermal and mechanical stress on the melt and highly efficient degassing have characterized MRS technology for decades.

With the new MRSjump extruder, the MRS screw section has been modified and extended so that, in combination with a 1 mbar vacuum unit developed for this purpose, the viscosity of the polyester can be raised or stabilized 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 very compact design of the MRSjump extrusion line (Fig.) requires little space, energy and maintenance compared to other solutions on the market.

Rotary filtration retrofit solutions for demanding applications
An additional size across the line of Rotary Filtration Systems will be introduced: 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.

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. The 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 models differ in terms of e.g. drive design, encapsulation and whether they offer integrated back-flushing.

Digital sensor communication and customized sensor solutions
As a machinery manufacturer, Gneuss has the manufacturing capabilities to realize even unusual sensor requirements. Gneuss sensors are available to match regional or application-specific requirements such as Atex, Hart Communication or EAC and are also available with digital IO-Link communication. For special process conditions or difficult places of installation, individual sensor solutions are offered; new to the equipmentare the rotatable sensor shaft and a flange mounting solution.

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