| 摘要 |
<p>The present invention can reduce the energy required for manufacturing glass substrates compared to the prior art and prevents foam quality degradation for glass substrates. In a stirring step, the viscosity of molten glass is set at 500 - 2000 poise, and also the partial pressure of water vapor in the atmosphere around a platinum or platinum alloy container is set at 0.6 - 12 kPa.</p> |
