METHOD FOR PRODUCING GLASS PLATE

The present invention addresses the technical problem of providing a method for producing a glass plate, whereby it becomes possible to reduce the variations in a thermal shrinkage coefficient stablywhile keeping the thermal shrinkage coefficient at 15 ppm or less. The method for producing a glass plate according to the present invention includes: a melting step of melting a glass batch preparedso as to be formed into a glass having a B2O3 content of 3% by mass or less in an electric melting furnace 1; a molding step of molding the molten glass Gm into a plate-like glass; a slow cooling stepof slowly cooling the plate-like glass in an annealing furnace 12; and a cutting step of cutting the slowly cooled plate-like glass Gr into a predetermined size to produce a glass plate Gs having a beta-OH value of less than 0.2 /mm and a thermal shrinkage coefficient of 15 ppm or less. The method is characterized in that the thermal shrinkage coefficient of the glass plate Gs is measured and therate of the cooling of the