Is a sandwich made of one thin layer of plastic Poly Vinyl Butyral between two or more sheets of glass. The PVB sticks with the glass, forms chemical as well as mechanical bonds. When laminated with annealed glass, the layer maintains the geometric integrity of the pane in case of breakage. Also, it gives acoustic insulation to acoustic popular windows as well as providing protection against damage caused due to UV radiation because it cuts almost 99% of UV radiation present in the sunlight.