Verfahren zur Herstellung von Glasrohlingen

摘要

A method of producing a glass blank (17), comprising the steps of: supplying a desired weight of molten glass material (24) to a bearer (14) heated to a temperature of not more than a softening point of the glass material (24); performing and cancelling, at a temperature of not less than the softening point, pressing of the glass material (24) supplied to the bearer (14) so as to adjust a thickness of the glass material (24); and cooling the glass material (24) to a temperature of not more than the softening point.