Patent ID: 9193135
Filing Date: 2015-11-24
Classification: B32B,G02F

Abstract:
1. A laminated switchable glazing comprising a suspended particle device, the laminated glazing comprising, an SPD ply comprising the suspended particle device having a low light transmission off-state and a high light transmission on-state, at least one interlayer ply comprising an interlayer material, and at least one glazing ply, wherein the interlayer material has a predetermined moisture content of 0.23 weight % or lower prior to lamination to increase the time over which the suspended particle device is switchable between the low light transmission off-state and the high light transmission on-state state when compared to the time over which the suspended particle device is switchable between the low light transmission off-state and the high light transmission on-state when the suspended particle device is in an equivalent laminated glazing where the interlayer material has not been dried to moisture content of 0.23 weight % or lower.