... 0.2mm-1.52mm, the best material for the interlayer of safety glass as its wonderful product property such as anti-penetration ... by permanently bonding two or more pieces of glass with layers of Polyvinyl Butyral. (PVB) interlayer, under heat and pressure, to create a ... world, such as Europe, Russia, Middle East, Turkey, Thailand, etc. PVB film, PVB interlayer film, PVB film for laminated glass