Title:
PROCESS FOR PRODUCING GLASS SUBSTRATE FOR FLAT PANEL GLASS
Document Type and Number:
WIPO Patent Application WO/2008/004481
Kind Code:
A1
Abstract:
A process for producing a glass substrate for flat panel glasses which retains
satisfactory marring resistance and can be prevented from suffering colloidal-silver
coloring; and a glass substrate for flat panel glasses which is obtained by the
process. The process produces a glass substrate for flat panel glasses by the
float method. It comprises a forming step in which a molten glass is formed on molten
tin into a glass substrate and an annealing step in which the glass substrate formed
in the forming step is annealed. The process further comprises a first supply
step in which an inorganic substance containing an alkali metal is blown against
that surface of the glass substrate which was in contact with the molten tin and
a second supply step in which after the first supply step, SO2 gas is
blown against that surface of the glass substrate which was in contact with the
molten tin.
Inventors:
TAKEDA, Satoshi (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
竹田 諭司 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 1008405, JP)
TANII, Shirou (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
谷井 史朗 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 1008405, JP)
竹田 諭司 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 1008405, JP)
TANII, Shirou (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
谷井 史朗 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 1008405, JP)
Application Number:
JP2007/062914
Publication Date:
January 10, 2008
Filing Date:
June 27, 2007
Export Citation:
Assignee:
ASAHI GLASS CO., LTD. (12-1, Yurakucho 1-chome Chiyoda-k, Tokyo 05, 1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 1008405, JP)
TAKEDA, Satoshi (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
竹田 諭司 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 1008405, JP)
TANII, Shirou (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 1008405, JP)
TAKEDA, Satoshi (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
竹田 諭司 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 1008405, JP)
TANII, Shirou (12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
International Classes:
C03C17/22; C03B18/14; C03C3/078; C03C3/083; C03C3/085; C03C3/087; H01J9/24; H01J17/16
Attorney, Agent or Firm:
OGURI, Shohei et al. (Eikoh Patent Office, 7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo 03, 1050003, JP)
Previous Patent: PROCESS FOR PRODUCING ALKALI-FREE GLASS SUBSTRATE
Next Patent: PROCESS FOR PRODUCTION OF OXYALKYLENE POLYMER AND CURABLE COMPOSITION
Next Patent: PROCESS FOR PRODUCTION OF OXYALKYLENE POLYMER AND CURABLE COMPOSITION