Manufactured from the extrusion of a single resin, they have significant structural performance in thermoforming and/or doubling processes, thermoacoustic insulation and water protection. They are produced with thicknesses ranging from 1 to 4mm (without colamination), densities and varied characteristics that make it possible to meet the needs and specifications of customers. To increase mechanical strength and weldability, it is possible for this material to be film-coated. They perform well in mechanical absorption, sealing, resilience and thermoacoustic insulation.