Saint-gobain Glass France

Sylvain Payot

David Fournier

Marc Rehfeld

A glazing unit having improved vibroacoustic damping properties, including: at least one glass sheet; at least one vibroacoustic damping strip, the strip including at least one element made of damping material and the strip being fastened to one of the faces of the glass sheet. The face of the strip facing the glass sheet has a surface area in contact with the glass sheet which is strictly inferior to the surface area of the face of the strip facing the glass sheet. The glazing unit makes it possible to damp noise and vibrations while taking up little space.

Glazing unit with improved vibroacoustic damping properties, method for making such a glazing unit and method for acoustic protection in a vehicle passenger compartment

A glazing unit with improved vibro-acoustic damping properties, including at least one glass sheet and at least one vibro-acoustic damping strip fastened onto at least one of faces of the glass sheet and that includes at least one element made of damping material having a loss factor of at least 0.4 and a Young's modulus of less than 200 MPa at 20&#xb0; C. for frequencies below 5000 Hz. The strip also includes at least one weighting element that has a linear mass of greater than 0.05 kg/m and is fastened onto the element made of damping material, the element made of damping material being inserted between the glass sheet and the weighting element, and no device other than the glazing unit being joined to the strip.

Glazing unit with improved vibro-acoustic damping properties, method for making such glazing unit and method for acoustic protection in a vehicle passenger compartment

A glazing unit with an improved vibroacoustic damping property including at least one sheet of glass and at least one vibroacoustic damping strip that is attached to at least one of the faces of the glass sheet and that includes at least one component made of damping material having a loss factor greater than 0.2. The strip is not joined to any other device on the opposite side from the glass sheet and the component made of damping material has a Young's modulus greater than 800 MPa, at 20&#xb0; C., for a particular frequency corresponding to the critical frequency of the glazing unit to within plus or minus 30%.

Glazing unit having an improved vibroacoustic damping property, process for manufacturing such a glazing unit and process for acoustic protection in a vehicle passenger compartment

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Compiegne, France

Sylvain Payot