WINDOW GLASS FOR VEHICLE AND PROCESS FOR PRODUCING THE SAME

摘要

There is provided a vehicle window glass that can be manufactured at low cost and can efficiently cut off infrared rays impinging on passengers sitting on window seats most susceptible to sunlight exposure, and a manufacturing method for the same. With a glass substrate 1 held by a glass substrate holding member 4 in the vertical direction, a nozzle 2 is used to eject an infrared cutoff liquid 3 onto the upper portion 1b of the glass substrate 1. The infrared cutoff liquid 3 ejected onto the upper portion 1b of the glass substrate 1 flows vertically downward such as to be applied onto the glass substrate 1. The film thickness of the lower portion of an infrared cutoff film is greater than that of the upper portion of the same. The glass substrate 1 is dried for approximately five minutes at room temperature. Then, the glass substrate 1 onto which the infrared cutoff liquid 3 has been applied is placed in an oven preheated to 200°C, heated for ten minutes, and then cooled so as to manufacture the glass substrate 1 having the infrared cutoff film thereon. The manufactured glass substrate 1 having the infrared cutoff film thereon is installed in a railroad vehicle 5 in such a way that the lower portion 1c of the glass substrate 1 is located on the lower side with respect to the railroad vehicle 5 and the upper portion 1b of the glass substrate 1 is located on the upper side with respect to the railroad vehicle 5.