How is EPS Manufactured?

When raw EPS particles containing a blowing or expanding agent are softened by heating with steam, the hollowed closed cells are formed within the particles which expand up to 50 times their original volume.

Blocks of EPS are made by resoftening the expanded particles in a block mould under steam pressure until they fuse together. The block is then cut into sheets or boards.

Shaped EPS Products are produced either by cutting blocks with a hot wire or by direct moulding of expanded particles in specially shaped moulds.

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