| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for molding quartz glass which can suppress inclusion of bubbles in a glass molded body and deterioration in the flatness of the molded body and can improve the recyclability of a mold. <P>SOLUTION: The method for molding quartz glass includes putting quartz glass 8 in a mold 1 surrounded by a bottom plate 6, sidewalls 3 and a top plate 5, melting the quartz glass 8 by heating to its softening point or above, and molding the molten glass, wherein the bottom plate 6 comprises at least two carbon plates, the plates are laid so that mutually adjacent end faces can be bonded, and the distance from the bonded surface of the plates to the internal surface 31 of the closest sidewall 3 of the mold 1 is ≤15% of the distance to an internal surface 31 opposite to the above internal surface 31. <P>COPYRIGHT: (C)2013,JPO&INPIT |
