EP 4363275 A1 20240508 - ACOUSTIC AND THERMAL SHIELD FOR A MOTOR VEHICLE
Title (en)
ACOUSTIC AND THERMAL SHIELD FOR A MOTOR VEHICLE
Title (de)
SCHALL- UND WÄRMESCHUTZSCHILD FÜR EIN KRAFTFAHRZEUG
Title (fr)
ECRAN DE PROTECTION ACOUSTIQUE ET THERMIQUE POUR VÉHICULE AUTOMOBILE
Publication
Application
Priority
- FR 2107000 A 20210629
- EP 2022067775 W 20220628
Abstract (en)
[origin: WO2023275077A1] The invention relates to an acoustic and thermal shield (1) for a motor vehicle, the shield comprising a porous shell (2) based on fibres bound together by a binding agent and a spring layer (3) based on elastically compressible polyurethane foam, the porosity of the shell being such that the foam is able to create a sealed skin (5) on the underside of the shell, which fibres consist of two types: thick reinforcing fibres in an amount of 25 to 40% by weight of the shell and fine fibres in an amount of 15 to 35% by weight of the shell, the bonding agent being formed by fusible bonding fibres in an amount of 35 to 50% by weight of the shell, so that substantially no foam penetrates the thickness of the shell.
IPC 8 full level
B60R 13/08 (2006.01)
CPC (source: EP)
B60R 13/0815 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
FR 3124449 A1 20221230; CN 117836178 A 20240405; EP 4363275 A1 20240508; WO 2023275077 A1 20230105
DOCDB simple family (application)
FR 2107000 A 20210629; CN 202280051862 A 20220628; EP 2022067775 W 20220628; EP 22735453 A 20220628