SOUND ABSORBING PANEL Russian patent published in 2008 - IPC E04B1/74 

FIELD: construction, superstructures.

SUBSTANCE: principle applies to construction, partly to facilities meant for protection from sound waves (noise), and other wave emission and its absorption and can be used in noise protection screens. A noise absorbing panel consists of a perforated panel, hollow panel, sound absorbing element between the above mentioned panels. The perforated panel is made with openings in the form of fissure traps with reflectors turned in the direction of the sound absorbing element. The perforated panel contains, at least, two fissure traps, whose reflectors are inclined at different angles to the panel plane. The noise absorbing element has a thickness from 30 mm to 100 mm and placed in a polyethylene sheath of thickness 0.1 mm to 3 mm. The technical result consists of increasing the absorption capability of the panel.

EFFECT: increasing the absorption capability of a panel.

3 dwg