METHOD AND APPARATUS FOR REMOVING BUBBLE FROM MOLTEN GLASS AND PROCESS FOR PRODUCING GLASS

WIPO Patent Application WO/2007/132590

A1

A method of efficiently removing bubbles remaining on the surface of a molten glass, which eliminates the problem that, in producing glass substrates, bubbles remaining on the surface of a molten glass come into inner parts during formation to become internal bubbles, can provide a glass substrate of satisfactory quality, and can improve the productivity of the glass substrate. Also provided are: an apparatus for removing bubbles; and a process for producing a glass which employs the bubble removal method. The method, which is for removing bubbles floating on the surface of a molten glass, comprises irradiating floating bubbles present on the molten glass surface with at least one laser light beam at a given angle.

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WATANABE MITSURU (JP)
KUROIWA YUTAKA (JP)
IGA MOTOICHI (JP)
ITO SETSURO (JP)
FUKASAWA YASUJI (JP)

PCT/JP2007/055144

November 22, 2007

March 14, 2007

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ASAHI GLASS CO LTD (JP)
WATANABE MITSURU (JP)
KUROIWA YUTAKA (JP)
IGA MOTOICHI (JP)
ITO SETSURO (JP)
FUKASAWA YASUJI (JP)

C03B5/225

JPH11349335A	1999-12-21
JP2004284949A	2004-10-14
JP2002523205A	2002-07-30
JPS63252509A	1988-10-19
JPS63104620A	1988-05-10
JPS6031306U	1985-03-02

SENMYO, Kenji et al. (SIA Kanda Square17, Kanda-konyacho,Chiyoda-k, Tokyo 35, JP)

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