MOLDING METHOD OF GLASS PRODUCT

摘要

PURPOSE:To make the temp. difference of both the front and rear faces of the molded glass small by molding the glass while following a molding face of a metallic mold and injecting a fluid for the cooling between the surface of glass and the molding face of the metallic mold when the molded glass is made to the prescribed viscocity. CONSTITUTION:A preheated glass plate G or a cove is mounted on a metallic mold 11 and introduced into a heating furnace 2. The glass plate G is heated with a heater 3 and vacuumed to stick closely the glass plate G on the molding faces 13, 14 of a molding part 12. The metallic mold 11 is drawn out to the outside of the heating furnace 2 while incorporating the molded glass plate G therein. In a point of time when the viscocity of the glass plate G is made to about >=10<8.3> poise, a fluid for the cooling is injected between the faces wherein the molding faces 13, 14 are touched to the molded face of the glass plate G. Thereby both the obverse and reverse faces of the molded glass product are cooled in the nearly equal cooling velocity and thereafter it is taken out of the metallic mold 11 and slowly cooled.