Title:
HEAT-RESISTANT TEMPERED GLASS AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/020509
Kind Code:
A1
Abstract:
A heat-resistant tempered glass that is for windows and doors of building and
housing unit, having a strength satisfying flame shielding performance, and
that realizes high image quality. The tempered glass is one resulting from physical
strengthening processing of a glass plate cut into given size, characterized
in that there is provided an edge portion polished plane inclined against the
surface of glass plate and an end face thereof, and that the edge portion polished
plane has an angle of 135° to 170° against the glass plate surface,
and that a break in a corner portion made by the edge portion polished plane and
the glass plate surface has a length of 200 μm or less in the direction of
edge line and has a maximum width of 100 μm or less in the direction perpendicular
to the edge line.
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Inventors:
YAMAMOTO, Masafumi (Limited 12-1, Yurakucho1-chome, Chiyoda-k, Tokyo 05, 1008405, JP)
Application Number:
JP2007/063172
Publication Date:
February 21, 2008
Filing Date:
June 29, 2007
Export Citation:
Assignee:
ASAHI GLASS COMPANY, LIMITED (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)
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)
International Classes:
C03B27/04; C03B33/02
Attorney, Agent or Firm:
SENMYO, Kenji et al. (4th Floor, SIA Kanda Square 17, Kanda-konyacho, Chiyoda-k, Tokyo 35, 1010035, JP)
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