XPS (EXTRUDED POLYSTYRENE) thermal insulation product

XPS sheets are produced by extrusion process, during which the solid compounds are melted and mixed with blowing agents (gases) under high pressure. When the mix leaves the extruder, the mix expands and creates a solid foam with closed-cell structure. The foam is further processed by grinders creating sheets with different surface and edge types. However, thanks to the extrusion process, the end result is a closed-cell sheet that is resistant to moisture and many environmental influences. During their production, polystyrene crystals are expanded into the desired board shape. To distinguish them, they are produced in coloured designs.