PVB interlayer film is made form PVB MACROMOLECULE MATERIAL WHICH IS EXTRUDED WITH PLASTICIZER DHA, THE THICKNESS OF THE PVB FILM USUALLY ARE 0.38MM, 0.76MM AND 1.5MM. iT HAS A GOOD VISCOSITY FOR INORGANIC GLSS, BESIDES THE FEATURES OF TRANSPARENCY, HEAT-RESISTANCE, COLD RESISTANCE, ANTI-DAMP AND HIGH IMPACT STRENGTH