Expanded Polystyrene, often referred to as EPS in short, is a rigid, closed cell foam plastic. EPS properties have a low thermal conductivity, high compressive strength, is light weight, inert, has no food value, and does not promote mold growth, making it an ideal substrate for tile and stone.
Expanded Polystyrene (EPS) is processed from its resin form (a small bead resembling sugar). The resin contains a pentane gas which is safely released during the expansion process. With the addition of steam, the EPS resin expands up to 40% of its original size.
The expanded pallets are then transferred into a block moulder. The more pellets per cubic meter, the denser the produdct will be. Then the pellets are steam fused together moulding them into a block roughly 5m long, 1m wide and 3/4m high. This block can weigh up to 300kg.