Among them, some are well known because of the large used quantities such as polyethylene or PVC, and others because of the common nature of parts and goods such as films, foams and so on.
The processing wastes and post-consumer wastes represent a phenomenal source of polymers difficult to exploit because of practical, technical and economic barriers. However it is also a phenomenal pollution that must be carefully treated.
From an environmental point of view, reprocessing of plastic wastes is the best solution that can be considered according to two ways:
* Re-use in the same production or primary recycling
* Re-use in another production less performing, less demanding and of course less lucrative.
Recycling is difficult for several reasons the main ones being shown on figure 2:
* Plastic wastes are scattered: bags are light and dispersed into municipal wastes (or flying in the wind), bumpers are included in 1 or 2 tons of other materials of a car, bottles, PVC wallpapers are shredded and recoverable in small quantities…