| 摘要 |
A method of producing glass fiber comprising: driving a bottomed hollow cylindrical rotor (4) to rotate at high speed around a vertical rotary shaft (7), said rotor (4) comprising a bottom (11), a peripheral wall (8) and an annular flange (25), said peripheral wall (8) being extended upwardly from an outer peripheral edge of the bottom (11) and provided with a large number of fine holes (9), said annular flange (25) extending inwardly from an upper edge of the peripheral wall (8); falling molten glass (10) to the bottom (11) of the rotor (4); and ejecting molten glass (10) through said fine holes (9) by centrifugal force generated by the high speed rotation of the rotor (4), to form the molten glass into filaments, and to produce glass fiber; characterized in that molten glass is made to fall at a position (26) on the bottom (11), said position (26) being apart from an inner edge (31) of said annular flange (25) by at least 10mm or more, and apart from an inner surface (8A) of said peripheral wall (8) by not more than 75mm, the bottom (11) having a large thickness at the position (26). |
