Patent ID: 7892629
Filing Date: 2011-02-22
Classification: B32B,Y10T

Abstract:
1. A method for manufacturing a monolayer interlayer to be inserted in a laminated glazing with acoustic insulation and mechanical strength properties, said glazing comprising two glass sheets and the monolayer interlayer in the form of a polymeric film, the method comprising: selecting a material for the monolayer interlayer for its acoustic insulation properties, such that said monolayer interlayer material satisfies acoustic insulation properties when a critical frequency of a reference bar 9 cm long and 3 cm wide, consisting of a laminated glass comprising two glass sheets 4 mm thick joined by the interlayer with a reference thickness of 2 mm, is compared to a critical frequency of a glass bar having a same length and same width as the reference bar and a 4 mm thickness, and the critical frequency of the reference bar differs by at most 35% from that of the glass bar; measuring a J manufacturing the monolayer interlayer with a thickness such that it satisfies mechanical strength criteria when its thickness is equal to at least d