| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a glass molded body which enables to stably produce a high quality glass material, using low stability (high crystallizability) glass species, high specific gravity, high refractive index glass or the like, by continuously pouring molten glass into a mold. <P>SOLUTION: In the method for producing a glass molded body in which molten glass accumulated in a vessel 1 is allowed to flow down through a glass outflow pipe 2 connected to the vessel 1, continuously poured into a mold disposed below the pipe, and molded, a pipe provided with an outflow section with a glass outlet port at one end and a narrowed section 4 which leads molten glass to the outflow section and has an inside diameter smaller than that of the outflow section is used as the glass outflow pipe 2. Molten glass is allowed to flow out after increasing the diameter of a molten glass flow flowing in the pipe in an inverse tapered pipe section 5, and the molten glass is poured into the mold while keeping the level of molten glass in the mold lower than the outlet port of the pipe. <P>COPYRIGHT: (C)2013,JPO&INPIT |
