Laminated Safety Glass usually consists of two or more layers of Glass Joined Together by an Interlayer.
The interlayer is bonded to two layers of glass by heat and pressure thus acting as an adhesive. This is an intricate process and thus requires a high level of precision and control.
Annealed or Tempered Glass can be used depending on the design specifications. The Interlayer is most often made of PVB (Polyvinyl Butyral ) but can be made of either EVA (Ethylene-Vinyl Acetate) or SPG (SentryGlass Plus)
Inadequate Quality Control
Quality control is essential and if attention is not paid to the following during the manufacturing process it my result in Delamination.
If The Correct PH, Conductivity and Temperature of water is not used to clean glass before lamination it could result in chemical reactions or changes in the glass which could contribute to Delamination
If Toughened glass panes are not aligned properly before Lamination small voids may form which over time can cause Delamination.
If the interlayer is not stored according to the manufacturer’s specifications, its level of adhesion my change which in turn could lead to Delamination