GLASS MELTER, GLASS FIBER PRODUCTION APPARATUS, AND GLASS FIBER PRODUCTION METHOD

WIPO Patent Application WO/2012/086467

A1

A glass melting furnace is heated to the melting point of silica or hotter and the melting time of glass material is reduced, and the amount of insufficiently melted glass material is reduced. A glass fiber production apparatus (1) is provided with: a glass melting furnace (11) provided with a floor (12) and a side wall (13), and having a molten glass outlet (15) formed in the floor (12); an injection opening (19) that injects glass material into the glass melting furnace (11) and covers the glass melting furnace (11); a casing (18) in which a discharge opening (23), for discharging molten glass emitted from the outlet (15) of the glass melting furnace (11), is formed; and heating electrodes (14) for heating the molten glass in the glass melting furnace (11) using an electric current, and positioned so as to stick into the glass melting furnace from the roof (18a) of the casing (18). Therein, the inner surface of the side wall (13) and the floor (12) of the glass melting furnace (11) is coated with boron nitride. Additionally, the electric current of the heating electrodes (14) causes the glass material injected into the glass melting furnace (11) to be directly heated and melted.

OGAWA KENTAROU (JP)
NAKAMURA KOICHI (JP)
HIRAYAMA NORIO (JP)

PCT/JP2011/078792

June 28, 2012

December 13, 2011

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NITTO BOSEKI CO LTD (JP)
OGAWA KENTAROU (JP)
NAKAMURA KOICHI (JP)
HIRAYAMA NORIO (JP)

C03B5/027; C03B37/01

JP2003183031A	2003-07-03
JP2010052971A	2010-03-11
JP2005271058A	2005-10-06

HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)

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