LINZ, AUSTRIA (Sept. 19, 4 p.m. EDT) — K 2001 visitors can see a machine that turns post-consumer PET bottle flake into food-contact thermoforming sheet — but they will have to take a shuttle flight to Erema GmbH's technical center in Linz during the show.
Erema also will announce a 30 percent increase in throughput for its reprocessing extruder.
Erema and downstream equipment supplier SML Maschinengesellschaft worked together on the PET sheet line, dubbed Recysheet. The thermoforming sheet meets Food and Drug Administration standards for food contact. Washed bottle flakes get processed directly, without the need for external predrying and precrystallization, into a flat sheet using the Vacurema extrusion process. There is no need for a separate step to pelletize the PET.
The technology also can be used to combine recycled plastic with virgin resin to make food-contact-grade film.
Erema said the 30 percent increase in extruder output comes by increasing the diameter of the densifier. At the same time, the processing melt temperature has been reduced.
The greater volume of the densifier leads to longer dwell times, considerably improving the homogeneity of the temperature of the material, before it is directed to the extruder, according to Erema. Those features, combined with the liquid-cooled extruder, reduces temperature peaks inside the extruder.
Erema also will debut a Coax series of single-shaft shredders that handle large volumes of uncut material such as tangled piles of polypropylene tape, fiber bales, start-up lumps, film rolls and thick-walled injection molded parts.