All used plastic materials are collected by the local councils and delivered to the sorting facilities which are located around the entire country.
All of these plants were tasked with sorting all the packaging into different product categories removing all the waste materials. films, polyolefine and mixed plastic bags were captured through an aspiration system.
Liquid containers and other materials instead go through a series of optical readers which are programmed to recognize materials and sort the packaging into pet dashing them with a high pressured jet of air.
The same scan system or some exceed possible to divide PET into three different color categories like blue, mixed and transparent.
The containers in HDPE which are not hit with jet of air fall instead on to the dedicated conveyor belt.After a series of accurate automated and manual controls the different categories of selected packaging exit the machinery so that corupler deliver them to the recycling companies through remote options.
The recycling process for the different polymers includes some similar phases but they are carried out by different dedicated machines.
The PET for example needs to be prewashed first,the packaging is placed in a dedicated drum and washed with hot water and steam to remove all the surface imperfections.
Afterwards a mill equipped with blades will juices the bottles into very small pieces which is also called “Flakes”. The flakes are washed once again with special detergents in a series of tanks from where they emerged totally clean.
Finally they are centrifuged and dried, thanks to powerful aspiration system which removes the residual dust and moisture. The recycling PET process is now over.
Well in the case of HDPE and mixed polyolefine , it needs a further step before the final transformation into granules. These materials are end up looking like small , firstly they will be wormed up to their fusion point and simultaneously pushed in to a mound which create a longer strips similar to spaghetti cut preciously by a blade.
Flakes and granules are accurately controlled to test their quality and ensure their incompliance with required standards. And afterwards they are collected in large bags and delivered to the companies which were use them to produce brand new objects may be very different from the one they came from, because the plastic resources are in fact never ending.