Heretofore, waste disposal by combustion or reclamation treatment has been prevalent. Since plastic is a very convenient material, the amount of waste plastic has been increasing without establishment of a particular recycling method for it.Recycling not only decreases wastes, but protects our environment, too. PVC (polyvinyl chloride) especially generates terrible toxic gases such as dioxin, chlorine and hydrochloride during the combustion process. As both PVC and PET (polyethylene terephthalate) have similar chemical and physical properties(hydrophobicity, specific gravity, etc), it is very difficult to separate them
