ABSTRACT
Several polymers are employed as interlayer for laminated glass: these are amorphous polymers characterized by a transition from hard solid (glassy) state to highly viscous liquid, passing through the rubbery temperature region where the material becomes viscoelastic (Ferry 1980). The rubbery temperature of these materials is generally close to the room temperature so that, in case of glass breakage, the interlayer is able to produce a bridge ligament among glass fragments avoiding the fall of them; in the serviceability domain, the interlayer is able to produce coupling between the glass panes.
