Glazing with improved vibro-acoustic damping property, manufacturing process for such glazing and acoustic protection procedure in a vehicle interior

摘要

Glazing (1) with improved vibro-acoustic damping property comprising at least one sheet of glass (10) and at least one vibro-acoustic damping profile (2) that is integral with at least one of the faces (12) of the glass sheet and comprising at least one element of damping material (20) of loss factor at least equal to 0.4, characterized in that the profile is not associated with any other device in a position opposite to the glass sheet and because the profile (2) also comprises at least one heavy element (3) having a linear mass greater than 0.05 kg / m and which is integral with the element of damping material 820), the linear mass corresponding to a proportion between the mass of the heavy element and the length of said heavy element according to the largest extension in contact with the damping element, the element of damping material (20) being sandwiched between the glass sheet (10) and the heavy element (3) and presenting a Young's module of less than 200 MPa at 20 ° C and for frequencies below 5000 Hz, the heavy element (3) being associated only to the face of the element of the damping material opposite to that in contact with the face of the sheet of glass.