METHOD FOR PRODUCING GLASS PLATE

摘要

This method for producing a glass substrate involves a fining step of fining a molten glass while making the molten glass flow through a pipe of which the outer peripheral wall made of platinum or a platinum alloy is heated. The fining step involves a bubble removal step of releasing bubbles contained in the molten glass from the liquid surface of the molten glass toward the gas phase inside the pipe. In the bubble removal step, the temperature distribution of the molten glass along the radial direction of the pipe is made uniform by stirring the molten glass.