GLASS-MELTING DEVICE FOR PRODUCING GLASS FIBER AND METHOD FOR PRODUCING GLASS FIBER USING SAME

Title:

GLASS-MELTING DEVICE FOR PRODUCING GLASS FIBER AND METHOD FOR PRODUCING GLASS FIBER USING SAME

Document Type and Number:

WIPO Patent Application WO/2010/104036

Kind Code:

A1

Abstract:

Provided are a device and method that can effectively reduce the gas bubble inclusions in spun glass fibers. A glass-melting device (10) for producing a glass fiber comprises a first glass-melting tank (12) that is exposed to a vacuum atmosphere, a second glass-melting tank (14) and a third glass-melting tank (16) disposed below the first glass-melting tank (12), an ascending conducting pipe (18) whereby molten glass that has been melted in the second glass-melting tank is fed upwards (14) to the first glass-melting tank (12), a descending conducting pipe (20) whereby the molten glass from the first glass-melting tank (12) is fed downwards to the third glass-melting tank (16), a vacuum housing (22), and a bushing (24), wherein independent heating means are provided to heat the first glass-melting tank (12), the second glass-melting tank (14), the third glass-melting tank (16), the ascending conducting pipe (18), the descending conducting pipe (20) and the bushing (24).

Inventors:

HIRAYAMA NORIO (JP)
TAKAHASHI MASAHIKO (JP)
MIYANAGA NAOHIRO (JP)
OGAWA KENTAROU (JP)

Application Number:

PCT/JP2010/053796

Publication Date:

September 16, 2010

Filing Date:

March 08, 2010

Export Citation:

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Assignee:

NITTO BOSEKI CO LTD (JP)
HIRAYAMA NORIO (JP)
TAKAHASHI MASAHIKO (JP)
MIYANAGA NAOHIRO (JP)
OGAWA KENTAROU (JP)

International Classes:

C03B37/085; C03B37/02

Domestic Patent References:

WO2006095523A1

2006-09-14

Foreign References:

JPS57149839A	1982-09-16
JPH0333020A	1991-02-13
JP2000128549A	2000-05-09
JPH11236237A	1999-08-31
JPH11171554A	1999-06-29
JP2003192373A	2003-07-09
JPH0242777A	1990-02-13
JPH02221129A	1990-09-04
JP2000302456A	2000-10-31

Other References: