Abstract：This paper describes the danger of plastics, and details the current widely-used recycling technology research of PET drink bottle and the recovery process of expanded polystyrene plastic EPS (the world's large number of the buffer liner materials), from various processes , we choose he most suitable program of recovery process among the present situations .
In this paper, we choose a further study to the solvent recovery process in EPS . Solvent recovery process effectively uses of recoverying waste EPS plastic, simple process without secondary pollution, the whole process simple heating, energy saving. In the dissolution process, I think methylene chloride and toluene make into a mixture of solvents, it can dissolve EPS at definite temperature, and then dissolved fluid use of precipitation and melting way isolate two types of technology getting polystyrene products, and it can obtain the optimal process parameters through experiments of the step-by-step process.
Keywords: packaging waste; EPS; PET；EPS solvent recovery
