NOISE ATTENUATING PANEL Russian patent published in 2008 - IPC E01F8/00 

FIELD: construction, ground based structures.

SUBSTANCE: invention relates to construction, in particular to devices designed for protection from sound waves (noise), as well as waves from other radiations and their attenuation, and can be used in noise screens. The sound attenuation panel consists of perforated panel, blank panel, sound absorbing element, covers for joining the perforated and blank panels, located between the perforated and blank panels. The perforated panel is made with openings in the form of slit-type traps, whose reflectors are at different angles to the plane of the perforated panel. The ratio of the area of the perforations to the area of the walls of the perforated panel is in the range 0.2 to 0.4 and the sound absorbing elements have thickness in the range 30 mm to 100 mm, and are in a polyethylene sheath of thickness from 0.1 mm to 3 mm. The technical outcome lies in the increase of the absorption capacity of the panel.

EFFECT: increased absorption capacity of the panel.

3 dwg