双层夹胶玻璃是在两层玻璃中间夹上一层胶片材料，而这胶片就跟真空玻璃的支撑是同一种材料，真空玻璃的支撑很小所以可以忽略不计，而夹胶玻璃的胶片是和玻璃一样大的，也就是全部是支撑点了，噪声肯定会通过支撑传导，当然如果有良好的窗户型材，做好窗缝密封，双层夹胶玻璃也能达到一部分的隔音效果。其实夹胶玻璃主要是为安全而设计的，一些车站，公共场所都用夹胶玻璃的。
Double layer laminated glass is sandwiched with a layer of film material between two layers of glass, and the film is the same material as the support of vacuum glass. The support of vacuum glass is very small, so it can be ignored. The film of laminated glass is the same size as the glass, that is, all the support points. The noise will definitely be transmitted through the support. Of course, if there is a good window profile, do a good job The window seam is sealed, and the double-layer laminated glass can also achieve part of the sound insulation effect. In fact, laminated glass is mainly designed for safety. Some stations and public places use laminated glass.