Asahi Glass Company, Limited

Masaaki Yoshikawa

Yasuo Sato

Tsunehiro Saito

Kazuhiko Ishimura

Misao Okada

Hiroshi Mase

Fumiaki Saito

Toshihito Kamioka

Shinsuke Nakajima

Katsuhiro Haruyama

Yukio Yoskikawa

A vacuum degassing method wherein a molten substance at an elevated temperature in a storage tank is sucked to a vacuum degassing vessel through an uprising pipe connecting the storage tank and the vacuum degassing vessel by maintaining the vacuum degassing vessel at a negative pressure, the molten substance is degassed and the degassed molten substance falls to a guiding duct through a downfalling pipe connecting the vacuum degassing vessel and the guiding duct characterized by that a first flow quantity of the molten substance rising in the uprising pipe is restrained and a second flow quantity thereof falling in the downfalling pipe is controlled thereby maintaining a quantity of the molten substance in the vacuum degassing vessel at a pertinent level.

Vacuum degassing method and its apparatus

A direct current magnetic field is applied to a molten metal bath to control the movement of molten metal. A glass ribbon is formed on the molten metal bath to have a predetermined thickness and is moved on the surface of the molten metal bath controlled by the magnetic field, during which the glass ribbon is cooled.

Method for manufacturing float glass

Difference in height is provided between a first surface of a molten metal bath at the upstream side in a vessel and a second surface thereof by means of a linear induction motor. A glass ribbon supplied to the first surface is formed to have a predetermined thickness while it is moved from the first surface to the second surface.

Method of and apparatus for manufacturing float glass

Growing community of inventors

Yokohama, Japan

Masaaki Yoshikawa