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AssigneeSaint-Gobain Vitrage
InventorsJean-Louis Bravet, Bernard Bureau, Claude Morin, Christian Padoy, Boris Vidal
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The invention relates to a composite glazing material of the type including two sheets of glass and an interlayer of transparent plastic of greater thickness than the thickness of the sheets of glass, characterized in that the plastic is capable of adhering to the glass. The glazing material has a total thickness smaller than 5 mm, a ratio of the thickness of the interlayer to the thickness of the sheets of glass of between 1 and 10, a mass per unit area lower than 6 kg/m2 and a Young's modulus higher than 30 GPa at a total thickness of glazing material of 3 mm.
A composite glazing material comprising two sheets of glass and a transparent plastic interlayer disposed between said two sheets of glass wherein said plastic of said plastic interlayer adheres to said glass sheets whereby a composite glazing material is formed, said glazing material having a total thickness of less than 5 mm with the proviso that said plastic interlayer has thickness greater than the thickness of said sheets of glass, the ratio of said thickness of said plastic interlayer to said thickness of said glass sheets being between 1 and 10 and said composite glazing material having a mass per unit area of less than 6 kg/m2 and a Young's modulus greater than 30 MPa at a total thickness of 3 mm.
A glazing material comprising a laminate of two sheets of glass disposed between a plastic interlayer, said plastic of said plastic interlayer having a Young's modulus of at least 20 MPa, wherein said glazing material has a thickness ratio of said plastic interlayer to said sheets of glass in the range of 1 to 10.
Dependencies are inferred from the claim text.