WINDOW OF A MOTOR VEHICLE COMPRISING TWO SKINS WITH EXCREENESS AND TAKING IN SANDWICH A SOUL

摘要

The invention relates to a motor vehicle wall comprising a first skin (10) and a second skin (20) sandwiching a core (50). The core (50) is made of a material whose rigidity is less than the rigidity of each of the skins, and in that at least the first skin (10) has on its inner face (15) first protuberances (30). ) which penetrate into the web (50) and which are disjoint from the second skin (20), the first protuberances (30) being arranged irregularly on the inner face (15) and / or having variable geometries of a first protrusion (30) to another first protrusion (30), such that acoustic wave transmission through the wall is minimized.