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There are two broad types of recycling operations: internal and external. Internal recycling is the reuse in a manufacturing process of materials that are a waste product of that process.
External recycling is the reclaiming of materials from a product that has been worn out or rendered obsolete. Plastics subject to recycling may concern post-industrial scraps or post-consumer scraps.
Plastic that comes directly from the factory is called post-industrial. Post-industrial plastic waste comes in all colors, shapes and sizes and is often in the form of films, purges, pieces and fibers. In fact, any type of plastic used in the manufacturing process is considered post-industrial. Scraps of items such as wire liners, seat belts, car bumpers, and other automobile parts are typical examples.
The sources of post-industrial plastic come from a variety of resins. Polystyrene (PS) Low-density Polyethylene (LDPE), Polypropylene (PP), Nylons, Acrylonitrile Butadiene Styrene (ABS) are just a few of the plastic polymers that can be recycled and reused.
Instead, post-consumer plastics such as bottles, packaging and other household items are certainly the best known.
Post-consumer waste is available in large quantities nowadays and their collection and sorting are very complex. However, it is important to manage post-consumer waste to prevent tons of plastic from polluting the environment.
Above all, it is important considering that post-consumer waste can turn into new feedstock and therefore in a valuable resource for players in the recycled plastic extrusion industry.
Post-consumer plastic transforms from waste into wealth when used as a raw material. In plastic manufacturing processes, post-consumer waste recycling can be extremely cost-effective because it is readily available and affordable.
However, traditional extrusion systems require post-consumer plastic waste to undergo specific and additional treatments (washing, sorting, etc.) before being used, especially when making high quality finished products. To overcome this gap, the Bausano screen changers intended for plastic extrusion have been upgraded and equipped with powerful state-of-the-art filter solutions.
Moreover, it is important to consider the high level of humidity during the process. To overcome this problem, the presence of a degassing system inside the extruder is essential.