During the Open House at BG Plast in Marnate, Italy, from 25th to 27th March, will be shown the whole process chain from the dosing of PET bottle flakes, via the extrusion and filtration of plastic melted as well as the subsequent sheet production, through to the thermoforming of food-grade packaging.

Gneuss Kunststofftechnik (Germany) will present the simple and high-performance integration of their MRS Extrusion Technology in a complete sheet production line in cooperation with the machine manufactu­rers BG Plast (Italy) and WM Wrapping Machinery SA (Switzerland).

On the line installed in BG Plast’s production hall, the washed PET bottle flakes are fed without pre-drying and crystallization directly via a gravimetric 3-component dosing system (Woywod) and a metal separator to the Gneuss Multi Extrusion System. The untreated polyester will be intensively decontamina­ted, vented and processed with a throughput rate of max. 500 kg/h with the special rotation extruder MRS 110, which makes use of a simple water-ring vacuum system, and will be filtered with the fully-automatic Gneuss Filtration System Type RSFgenius 90 without any pressure and/or process disturban­ces.

The melt will then be led to BG Plast’s downstream sheet line with polishing stack, coating system, sheet accumulator and winder. The semi-finished sheet product will then be led to WM Wrapping MachineryFC 780 E Speedmaster Plus thermoforming machine and thermofor­med to packaging trays.

The FC 780 E Speedmaster Plus is a Form+Cut+Stack vacuum pressure forming machine with steel rule cutting tool.

The forming area is of 780×570 mm and the clamping force of the cutting press is of 60.000 daN.

The visitors to this Open House can check the high transparency and good surface properties of the food-grade packaging directly on site.