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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING GLASS PLATE
Document Type and Number:
WIPO Patent Application WO/2013/054531
Kind Code:
A1
Abstract:
This method for manufacturing a glass plate includes a melting step, a fining step, and a forming step. In the melting step, molten glass is produced by using at least electrical heating to melt a glass feedstock containing SnO2 as a fining agent. The fining step includes the following: a bubble-removal process, after the melting step, in which the temperature of the molten glass is raised to at least 1,630°C at a rate of at least 2°C/min so as to generate bubbles therein in order to perform bubble removal; and an absorption process, after the bubble-removal process, in which the temperature of the molten glass is reduced so as to make the molten glass absorb the bubbles therein. In the forming step, the post-fining-step molten glass is formed into plate glass.

Inventors:
KIMIJIMA TETSUO (JP)
GEKKO HITOSHI (JP)
Application Number:
PCT/JP2012/006537
Publication Date:
April 18, 2013
Filing Date:
October 11, 2012
Export Citation:
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Assignee:
AVANSTRATE INC (JP)
International Classes:
C03B5/225; C03B5/235; C03B17/06; C03C3/091; F27D11/02; G02F1/1333
Domestic Patent References:
WO2012133467A12012-10-04
WO2010093571A22010-08-19
WO2008007676A12008-01-17
Foreign References:
JP2010111533A2010-05-20
JP2010523457A2010-07-15
JP2007039324A2007-02-15
Attorney, Agent or Firm:
GLOBAL IP TOKYO (JP)
Global IP Tokyo patent business corporation (JP)
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