NOVELTY - Waste material is heated with ethylene glycol, and volume of foam and film is reduced. Layer having polyolefin, polystyrene and acrylonitrile-butadiene-styrene, and layer having polyvinyl chloride, polyethylene terephthalate and aluminum film are separated in gravity separation tank (4). Sedimentation of aluminum film or chloride is performed in gravity separation tank (7). Waste material is separated by specific gravity difference.    USE - For abstraction of mixture of plastic and aluminum composite film used for recovering plastic, aluminum and metal used for polyethylene terephthalate bottles and agricultural film.    ADVANTAGE - The mixture is economically processed, and plastic and aluminum are efficiently recovered.    DETAILED DESCRIPTION - A waste material consisting of film, foam and mixture of molded product is separated to polyolefin-type resin (PO), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) copolymer, polyvinyl chloride (PVC) and aluminum metal by wet-specific gravity difference classification. The waste material is heated with ethylene glycol does not having solubility with respect to the resin, at melting point vicinity (120-170degreesC) of resin. A non-compatible state exists between each resin, even in contacting state. The foamed product is defoamed, volume of foam is reduced, and volume of film is reduced simultaneously. An upper layer containing PO resin, PS resin and ABS resin, and lower layer containing PVC resin, polyethylene terephthalate resin and aluminum composite film are separated in gravity separation tank (4). Sedimentation of aluminum composite film or vinylidene chloride is carried out in gravity separation tank (7) having liquid mixture of water and ethylene glycol. Ethylene glycol is replenished by polyethylene terephthalate depolymerization, recovered using heating vacuum evaporation tank (17) and recycled. Deterioration of ethylene glycol is prevented by providing a filter (9) in oil-water evaporation tank (2) and gravity separation tank (4).    DESCRIPTION OF DRAWING(S) - The figure shows the process drawing illustrating the abstraction of mixture of plastic and aluminum composite film. (Drawing includes non-English language text).    crusher (1)    oil-and-water evaporation tank (2)    oil-and-water cooler (3)    gravity separation tanks (4,7)    ethylene glycol separation tank (6)    heaters (8,19)    filter (9)    heating vacuum evaporation tank (17)