Impact resistant laminated windows and manufacture thereof

A laminated window having improved impact strength, the laminated window comprising a glass sheet as the outer sheet and a connecting sheet combined with the outer sheet by way of an organic bonding interlayer, one of the sheets being a pre-product glass sheet, the pre-product glass sheet having been produced by the steps of:

• etching at least one face of a tempered or non-tempered glass sheet substrate to produce a virgin surface which comprises silanol groups;
• cleaning the virgin etched surface by washing;
• removing mobile water from the cleaned virgin surface by a drying treatment, the silanol groups being retained;
• and applying a protective layer to the dried surface which adheres firmly to the surface and wherein the protective layer of the pre-product glass sheet is adhered to the outer sheet by the bonding interlayer, the materials of the protective layer and of the bonding interlayer being compatibly adherable together.