With the improvement of people's living standard, the family car market is more and more big, because of the special performance, PVB film for laminated glass not only excellent optical performance, and penetration resistance, sound insulation, insulation, ultraviolet ray, high and low temperature resistant special properties such as climate, security, good performance, so the front windshield, side windshield of the car are using laminated glass, the dosage of PVB film is growing rapidly. At present, the integration of front baffle glass and skylight in the market has become a trend, which requires the width of ribbon to reach more than 600mm. The width of ribbon produced by our company can reach more than 600mm.