- DIGITAL SOLUTIONS
The perfect complement for existing extrusion plants.
This crystallisation dryer makes the difference. The patented Multi Purpose Reactor, MPR for short,® is the highly effective complement for existing extrusion plants. The washed PET input material – bottle flakes, ground PET flat sheet waste and virgin material plus mixtures of them – is turned into clean, dry, dust-free, crystallised and food-contact-compliant flakes even before extrusion. You also have the option of using the MPR® as a stand-alone solution (without subsequent extrusion).
Economical and technically better.
Increased temperature and vacuum for effective decontamination, drying and crystallisation of PET
Easy to retrofit on existing extrusion plant
Better flake colour results thanks to vacuum processing
PET flakes that are clean, dry, dust-free, crystallised and food contact compliant even before extrusion
Materials with a low melting point can be processed without bridge formation (e.g. PET/PE, PLA, PET-G)
Maximum flexibility: a large range of PET input mixtures and materials with varying residual moisture and bulk density can be processed
Predrying to below 50 ppm moisture
Comes with energy-efficient ecoSAVE® technology
Dust-free flakes to avoid gelling problems
More output thanks to up to 80% increase of the bulk density of PET flakes and flat sheet waste
Slight increase of IV value possible
Extremely energy-saving: only 0.1 kWh/kg total energy consumption
How it works
Feeding (1) is automatic and continuous via a vacuum lock above the reactor. Inside the reactor (2) the material is heated by friction alone. In the case of high temperatures and high vacuum the drying process is accelerated. These conditions also ensure effective decontamination and crystallisation. A short discharge screw then conveys the hot material out of the reactor. The material now goes to the melt extruder.