Once collected, the plastic is pressed to facilitate its transport to the plants involved in sorting and recycling plastics for reuse as a “secondary raw material”, i. e. as a non-virgin raw material. From the collection of plastic, it is sent either to sorting and recycling centres or to compaction centres.
Once the plastic has reached the recycling plant, it is placed in a special facility that provides for the laceration of any collection bags. The first selection of mechanical plastic is carried out in a rotating screen that separates the various plastic families according to their size.
As a result of this first mechanical separation, which is carried out by the rotating screen (a sort of enormous centrifugal screen), further separation takes place by optical readers that separate the plastic according to the polymers of composition and possible colourations, in this case the separation does not happen with a rotary movement (centrifuge) but with air blowers. At this point a second compression with storage takes place, where homogeneous packaging is formed from the same types of plastics.