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    • 2. 发明专利
    • APPARATUS FOR MANUFACTURING GLASS FIBER
    • JP2003192373A
    • 2003-07-09
    • JP2001396146
    • 2001-12-27
    • ASAHI FIBREGLASS CO
    • HASEGAWA EISUKESEKINE KEIJI
    • C03B37/07
    • PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a glass fiber, where molten glass with a constant heat is supplied to a spinning furnace, an inclusion of air does not occur, and a problem caused by an air bubble present in the glass fiber is controlled. SOLUTION: The temperature of a melting furnace 20 and the temperature and viscosity of the molten glass 3 feed from the melting furnace 20 to a spinning furnace 7 are maintained at a constant level without fluctuation of the quantity of the molten glass in the spinning furnace 7 by controlling a feed of the molten glass 3 to the spinning furnace 7 by opening and shutting or controlling the opening of a flow outlet 24 set at the bottom of the melting furnace 20 using a valve 25 installed at the flow outlet 24. The molten glass 3 is supplied to the spinning furnace 7 by flowing down along a rod-like guide 28 connected to the lower end of the body 26 of the valve 25. The molten glass 3 in flowing down does not swirl and is supplied into the spinning furnace 7 in a state maintaining a homogeneous temperature, where air is not involved in the molten glass 3. COPYRIGHT: (C)2003,JPO