How is EPS made?
Upon contact with steam the pre-foaming agent found within the polystyrene beads starts to boil and the beads are expanded to between 40 to 50 times their original volume.
After expansion the beads undergo a maturing period in order to reach an equilibrium temperature and pressure.
The beads are placed within a mould and again reheated with steam. The pre-foamed beads expand further, completely fill the mould cavity and fuse together.
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