Sound proofing screen for motor vehicle, has housing in its reverse side to form spacing zone between side and wall, where side has geometry corresponding to geometry of wall to take on wall`s shape

摘要

The screen (1) has a housing (4) in its reverse side (3) to form a spacing zone between the side and a wall (2). The side has a geometry corresponding to geometry of the wall to take on wall`s shape, where the screen is formed with base of porous material. A body (6) is made with base of glass fiber mat or cotton felt. The glass fiber mat or cotton felt has a surface volume between 400 and 1800 grams per meter cube and an air passage resistance between 200 and 3000 Newton second per meter cube.