Treves Products, Services & Innovation

Centre D'etude Et De Recherche Pour L'automobile (Cera)

Jean-Christophe Stein

Guillaume Crignon

Dominique Lemaire

Christophe Capron

Andre-Xavier Bayle

André-Xavier Bayle

The invention relates to a sound protection panel for cladding a wall of an automotive vehicle, the panel includes a mass-spring system. The panel has a lower spring layer based on a resiliently compressible material, an upper mass layer based on resiliently compressible foam flakes, the flakes being bound together by a two-component fibre-based bonding agent comprising a core. The core is fusible at a high temperature or infusible, and a sheath fusible at a lower temperature, the flakes being fused with the sheath to form an upper agglomerated layer.

Sound protection panel for cladding a wall of an automotive vehicle

An acoustic protective panel for the fitting of a wall of a vehicle, has an upper porous layer, in particular with a felt or remelted flexible foam base, at least one zone of the porous layer being arranged on one sealing layer, the sealing layer being arranged on one backing layer () with a flexible polyurethane base forming a spring, said sealing layer being formed by impregnation on a portion of the thickness of the porous layer by the polyurethane of the backing layer overmolding the porous layer. Architectures for mounting such a panel are described.

Acoustic protective panel for vehicle comprising an impregnated sealing layer

Growing community of inventors

Bouy, France

Jean-Christophe Stein