Delamination

In the case of composite and laminated safety glass, it may be necessary to detach the glasses from the intermediate layer even years after production or installation. This is called delamination. Among others, the hygroscopic (hydrophilic) property of PVB (polyvinyl butyral)  under high thermal stress and high humidity are called into question. Likewise, material incompatibilities in the contact of PVB with certain silicones may be the trigger.