| abstract |
A foam board, with a thickness of at least 70 mm, is composed of two foam boards using alternative materials of a polystyrene foam free of partially halogenated fluorocarbons. The boards are produced so that, at their contact surfaces, there is no extrusion skin. The foam board, with a thickness of at least 70 mm, is composed of two foam boards using alternative materials of a polystyrene foam free of partially halogenated fluorocarbons. The boards are produced so that, at their contact surfaces, there is no extrusion skin. The boards are bonded together by a hot-melt and reaction adhesive with open diffusion, together with mechanical fasteners. The reaction adhesive component is a polyurethane adhesive. |