Sandwich Glass is Laminated Glass, for short ESG VSG in some countries.

It is manufactured by permanently bonding two or more glass panes with layers of polyvinyl butyral (PVB) interlayer, EVA interlayer，or SGP interlayer under heat and pressure to produce a single product. Hence Sandwich Glass is a vivid metaphor description for laminated glass.

It is a kind of multifunctional glazing material that can be used in a variety of applications. Generally, it is used to ensure and provide safety, security, sound control, and energy control. One of the most outstanding characteristics of laminated glass is that when it shatters, the broken glass sticks to the plastic rather than scatter it into bits and pieces.