PANEL CONSTRUCTION FOR MAKING SOUND-ABSORBING AND -INSULATING COATINGS FOR CEILINGS AND WALLS
A panel construction, for making sound-absorbing and -insulating coatings for ceilings and walls, comprises a plate element including a plurality of blind holes each of which has a labyrinth cross-section for restraining and disperse sound waves. The construction advantageously comprises a first plate element and a second plate element, so coupled to one another as to be substantially parallel, through an interposition of a corrugated coupling element; said construction comprising more- over an insulating material arranged in a space between the two plate elements and the corrugated element bends. The plate elements and the corrugated coupling element are advantageously constituted by corrugated cardboard elements. The insulating material comprises metal filaments, or other materials having insulating characteristics, such as rock wool and glass wool.