| 摘要 |
PURPOSE:To provide a refractory laminated glass excellent in safety by preventing the foaming, cracking and wrinkling when a film is formed and improving the adhesion to a sheet glass and other functions. CONSTITUTION:At least two sheet glasses are laminated through an intermediate layer to obtain the laminated glass. The intermediate layer is a solid layer formed from a soln. consisting essentially of sodium silicate and the molar ratio of SiO2 to Na2O is controlled to >=4.1 and the molar ratio of H2O to Na2O to 22+ or -7. The intermediate layer consists of a central layer and an outer layer on the sheet glass side, the water contents of the layers are different from each other, and the intermediate layer contains an additive of a water-soluble metal salt. The sheet glass on the fire side is made thinner than another sheet glass, and a resin layer is formed outside the intermediate layer. |
