초록 ▼

The invention relates to a lightweight sound insulating lining (1) for a body component of a motor vehicle, in particular in the form of a lightweight front wall lining, comprising a sound absorbing layer, a sound insulating layer which is directly connected to the sound absorbing layer and substant

The invention relates to a lightweight sound insulating lining (1) for a body component of a motor vehicle, in particular in the form of a lightweight front wall lining, comprising a sound absorbing layer, a sound insulating layer which is directly connected to the sound absorbing layer and substantially air tight, as well as an adjoining foam layer (1.3), wherein the sound absorbing layer (1.1) is made of a porous absorber, preferably a fiber fleece or a foam, which has an air permeability in the range of 150 to 2000 liters/m2s at a test pressure of 100 Pa. The sound insulating layer (1.2) is formed by an integral skin layer of the foam layer (1.3) with a thickness of at least 0.5 mm, and is integrally joined to the porous absorber by back-foaming the porous absorber substantially without foam penetration therethrough. Furthermore, a method for manufacturing such a lining is disclosed.

대표청구항 ▼

The invention claimed is: 1. A lightweight sound insulating front wall lining for a body component of a motor vehicle, comprising a sound absorbing layer, a sound insulating layer which is directly connected to the sound absorbing layer and substantially air tight, as well as an adjoining foam layer

The invention claimed is: 1. A lightweight sound insulating front wall lining for a body component of a motor vehicle, comprising a sound absorbing layer, a sound insulating layer which is directly connected to the sound absorbing layer and substantially air tight, as well as an adjoining foam layer, wherein the sound absorbing layer is made of a porous absorber, wherein the porous absorber has an air permeability in the range of 150 to 2000 liters/m2s at a test pressure of 100 Pa, wherein the sound insulating layer is formed by an integral skin layer of the foam layer with a thickness of at least 0.5 mm and integrally joined to the porous absorber by back-foaming the porous absorber substantially without penetration of foam, wherein the lining has on its edge a flexible sealing lip.