Sintering (moulding)

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sinteringDuring the “sintering” (moulding) process the expanded polystyrene beads are welded and compressed. The expanded and dried beads are injected into a mould and are again subjected to vapour that causes a further swelling. This process completely closes the interstices between the beads that, welded together, create a homogeneous block of foam. After cooling, these blocks are left to cure before final cutting into slabs.