Brief description of embodiments of a panel of acoustic protection is intended to be mounted in front of a sound source and the hot 2004

摘要

A method for producing a vehicle acoustic protection panel, comprising producing a screen comprising two parts in a first mould by thermocompression, the parts having a first configuration enabling them to be released from the mould, the parts each comprising a fibrous and porous thermal insulation layer and a heat-reflecting metal sheet made of aluminium, placing in juxtaposition the parts side by side in a second mould, of which a moulding cavity corresponds to the geometry of the panel to be obtained, the parts can be pressed firmly against the wall of the moulding cavity, adopting a second configuration corresponding to the panel geometry, the fibrous layer facing towards the inside of the moulding cavity, injecting in the moulding cavity a mixture that is a precursor of foam, forming a core overmoulding the fibrous layer, after the foam has expanded, releasing the panel obtained from the mould.