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EPS(Expandable Poly Styrene) is a lightweight, rigid, plastic foam insulation material produced
from solid particles of polystyrene. Expansion is achieved by virtue of small amounts of pentane gas
dissolved into the polystyrene base material duringproduction. The gas expands under the action of
heat, applied as steam, to form perfectly closed cells of EPS. These cells occupy approximately 40
times the volume of the original polystyrene bead. The EPS beads are then molded into appropriate
forms suited to their application. Products made from foamed polystyrene are nearlyubiquitous, for
example packing materials, insulation, and foam drink cups.
