| 摘要 |
<p>In the present invention, a glass substrate fabrication method has a molding step in which molten glass is molded into sheet glass by means of the down draw method using a molded body disposed in a molding furnace chamber, and a cooling step in which when the sheet glass is passed through a slow cooling furnace chamber located next to the molding furnace chamber, the sheet glass is gradually cooled while the temperature distribution in the width direction of the sheet glass is controlled. The slow cooling furnace chamber is divided into at least two spaces. A heat insulation plate with prescribed insulating properties is used for at least either the partition wall between the molding furnace chamber and the slow cooling furnace chamber or for the partition wall between the spaces within the slow cooling furnace chamber.</p> |
