Due to the stability, waste EPS material easily caused serious "white pollution", and resulting in deteriorating ecological environment. Polystyrene recycling attracted universal attention, many companies and research institutions developed a variety of EPS recycling methods:

1) Recycling and granulation: the waste styrofoam can be compacted and melted, Intco Greenmax machine uses EPS cold crushing compression technology to reduce the volume of EPS waste and re-granulated. Then you can directly use prepared PS pellets or EPS polymer pellets are mixed with other raw materials (such as linear SBS) processed into plastic alloy manufacturing plastic products, such as racks, flower pots, videos, furniture, building materials or insulation materials.

2) The waste EPS can directly shred as low density additive material with other materials (such as concrete, plaster or natural fibers) manufacturing new materials lightweight hybrid: (1) lightweight roof insulation material; (2) concrete foam insulation board; (3) fiber-reinforced sound insulation board; (4) plant fiber-reinforced thermal insulation material; (5) noise insulation bricks.

3) Waste EPS can be dissolved in a solvent directly as a coating, adhesive or sealant: (1) the waste polystyrene foam are specially treated to produce a new type of water as a medium of water and milk paint as corrugated boxes ideal moisture finishing agent; (2) Styrofoam was dissolved in aromatic hydrocarbons, chlorinated hydrocarbons, aliphatic ketones or cool, and until a certain concentration was added additives, stir, to produce waterproof coating, and then adding pigment becomes different color paint can be sprayed on the exterior wall or concrete floor, boxes or crates outer buildings, played the role of preventing water.

4) Using chemical means to generate cleavage of the polymer solvent recovered monomer or oil. Waste polystyrene pyrolysis and catalytic cracking of hydrocarbons and waste polystyrene foam oil is at 360 ℃, 150min after pyrolysis fractionation boiling range of 144 ~ 146 ℃ fraction of styrene, 70% yield , such as waste polystyrene foam polystyrene waste in the amount of catalyst to 1/20 and under at 260 ℃ pyrolysis reaction 60min, styrene yield of 83% as a colorless oily liquid. Other fractions are benzene, toluene, α- methyl styrene, cumene, propylbenzene, polystyrene, and second and third polymers.