Patent ID: 7412801
Filing Date: 2008-08-19
Classification: E04B

Abstract:
1. Sound absorbing panel comprising a generally rectangular mat of sound absorbing material being provided with a plastic non woven covering of the frontal surface thereof facing towards the sound insulated space, a sheet metal plate covering of the rear surface of said mat of sound absorbing material, said sheet metal plate covering extending outwardly perimetrically around said mat of sound absorbing material and forming a uniformly sized flange extension, said flange extension being bent inwardly by 180° to form a lip portion extending in a direction parallel to said sheet metal plate covering and said flange extension thereof, a recession being formed between said lip portion and said flange extension and four Z section edge members, one Z section edge member being provided for each one of the four lateral sides of the generally rectangular mat of sound absorbing material, each one of said Z section edge members comprising a base portion dimensioned to span the distance between the frontal and rear panel surfaces, abutting and securing a lateral side of the mat of sound absorbing material and two spaced apart flange portions projecting in opposite directions from the base portion and being oriented at right angles to the base portion, wherein one of said flange portions extends inwardly to overlap said plastic non woven covering of the frontal surface of the mat facing towards the sound insulated space, whereas the other one of said flange portions extends outwardly of the mat of sound absorbing material and enters within the recession being formed in between the parallel flange extension and lip portion of said sheet metal plate covering and is pressed therein to form a compact structure perimetrically around said sound absorbing panel.