MOLTEN GLASS SUPPLY DEVICE, GLASS PRODUCT AND METHOD FOR MANUFACTURING GLASS PRODUCT, THEREBY PREVENTING EXCESS HEAT RADIATION FROM A MELTING FURNACE AND SOLVING PROBLEMS OF REDUCTION IN THE QUALITY OF PRODUCTS

摘要

PURPOSE: A molten glass supply device is provided to prevent excess heat radiation from a melting furnace and to solve the problems of reduction in the quality of products caused by an excess amount of erosion foreign materials and reduction in product yield. Also, provided are glass product and method for manufacturing glass product. CONSTITUTION: The molten glass supply device(1) includes a melting furnace(2) that serves as a supply source of molten glass; and a supply path comprising a distribution portion(3) in communication with a flow outlet(2a) of the melting furnace(2) and a plurality of branch paths(4) branching from the distribution portion(3) and extending toward a plurality of the forming devices(5). The molten glass with characteristics exhibiting a viscosity of 1000 poise at a temperature of 1350 deg. C or higher is supplied to the forming device(5) for a glass product from the melting furnace(2) through the distribution portion(3) and a plurality of branch paths(4).