METHOD FOR MANUFACTURING GLASS GOB, METHOD FOR MANUFACTURING GLASS MOLDING, APPARATUS FOR MANUFACTURING GLASS GOB, AND APPRATUS FOR MANUFACTURING GLASS MOLDING

摘要

In case a glass gob or a glass molding is manufactured by dripping molten glass droplets into a female mold, there are provided a manufacturing method, which can suppress the deterioration of the female mold due to oxidization, sufficiently without enlarging an apparatus therefor, and a manufacturing apparatus for the method. The female mold is housed in a chamber having such an opening in the dripping passage of the molten glass droplets as can change an opening area. This opening area is enlarged to time the dripping of the molten glass droplets so that the molten glass droplets may pass through the opening after the chamber is fed with a non-oxidizing gas.