Asahi Glass Company, Limited

Agc Inc.

Shiro Tanii

Takashi Kijima

Toru Kudo

Mizuki Sasage

Takenori Miura

Setsuko Mita

Daisuke Kobayashi

Kunio Watanabe

Koji Nakagawa

Yasuo Hayashi

Naoki Okahata

Makoto Fukawa

Kazuhiko Yamanaka

Nobuaki Ikawa

Satoshi Miyasaka

Masanobu Shirai

Ryosuke Kato

Junichi Miyashita

Hideko Nakada

Toshifumi Nihei

The present invention provides a tin alloy bath for a float bath, an apparatus for manufacturing a float glass, a method for manufacturing a float glass that can provide a high quality float glass in which defects due to coagulation and falling of a volatile tin component have been suppressed, and a float glass manufactured using those. The above-mentioned tin alloy bath for a float bath is a molten metal bath to be placed in the float bath for supplying molten glass to a liquid surface of the molten metal bath, thereby forming into a glass ribbon, and includes 1 mass % or more of copper with the remainder being unavoidable impurities and tin.

Method for manufacturing float glass, and float glass

A glass sheet has one surface and the other surface facing the one surface in a thickness direction, wherein a fluorine concentration (average fluorine concentration by SIMS at a depth of 1 to 24 &#x3bc;m) in the one surface is higher than that in the other surface. The following expression is satisfied: 0.07&#x2266;&#x394;F/&#x394;HO. &#x394;F (mol %) is a value obtained by subtracting an average fluorine concentration in the surface having the lower fluorine concentration from that in the surface having the higher fluorine concentration, and &#x394;HO (mol %) is an absolute value of a value obtained by subtracting an average HO concentration in the surface having the higher fluorine concentration from that in the surface having the lower fluorine concentration.

Glass sheet capable of being inhibited from warping through chemical strengthening

Dark green colored glass

Ultraviolet ray absorbing colored glass, which comprises 100 parts by weight of a base component consisting of soda lime silicate glass and coloring components consisting essentially of from 0.08 to 0.4 part by weight of total iron as calculated as Fe.sub.2 O.sub.3, from 0.05 to 0.4 part by weight of vanadium as calculated as V.sub.2 O.sub.5, from 0.0005 to 0.03 part by weight of Se, from 0 to 0.005 part by weight of CoO, from 0 to 2.0 parts by weight of TiO.sub.2 and from 0 to 0.8 part by weight of CeO.sub.2.

Ultraviolet ray absorbing colored glass

Ultraviolet ray absorbing colored glass, which comprises 100 parts by weight of soda lime silicate glass as a base component and coloring components consisting essentially of from 0.12 to 0.7 part by weight of total iron as calculated as Fe.sub.2 O.sub.3, from 0.2 to 2.0 parts by weight of total cerium as calculated as CeO.sub.2, from 1.0 to 2.5 parts by weight of total titanium as calculated as TiO.sub.2, from 0 to 0.01 part by weight of CoO and from 0.0001 to 0.02 part by weight of Se, and which has an ultraviolet ray transmittance of at most 10%, as stipulated in ISO-9050 and as calculated as of a thickness of 5 mm, whereby the dominant wavelength measured by illuminant C is within a range of from 565 to 600 nm.

Growing community of inventors

Tokyo, Japan

Shiro Tanii