To provide a method for producing a glass sheet excellent in surface quality, capable of maintaining production of a high-quality glass sheet even if a production facility is changed with the lapse of time by long-time continuous production of the glass sheet.
When producing a glass sheet, a glass raw material is melted to create molten glass, the molten glass is molded using the downdraw method, a glass ribbon is formed, and the glass ribbon is drawn downwards and annealed while being sandwiched between a plurality of roller pairs 18, 19 disposed along the conveyance direction for the glass ribbon. During molding, both ends of the glass ribbon are cooled while the glass ribbon continues to be sandwiched between the roller pairs 18, 19 and drawn downwards. Each roller in a first roller pair, which is one of the roller pairs used either in molding or annealing, is rotatably driven on the basis of a roller rotation speed determined so as to compensate for roller diameter change.
NAKAJIMA KIMIHIKO
YAMAZAKI SHINJI
AVANSTRATE KOREA INC
| JP5288386B2 | 2013-09-11 | |||
| JPH0753230A | 1995-02-28 | |||
| JP2009502706A | 2009-01-29 |
| WO2010070963A1 | 2010-06-24 | |||
| WO2011007656A1 | 2011-01-20 |
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