Nippon Sheet Glass Company, Limited

Toru Futagami

Hideo Yoshizawa

Tetsuo Minaai

Masao Misonou

Norihiro Fujioka

Koichi Sakaguchi

Shigeki Nakagaki

Shinjiro Domi

Takeshi Yabuno

Kazushi Shinozaki

Mamoru Takimura

A glass panel (P) comprising a pair of glass plates (A,B) opposed to each other, spacers () disposed between the pair of glass plates for maintaining a gap therebetween, and a sealing member () having a lower melting point than the glass plates () for sealing the pair of glass plates (A,B) at outer peripheries () thereof to form a decompression void (V) between the pair of glass plates (A,B), wherein a compressive force Fc is allowed to remain at outer surfaces of the outer peripheries () of the glass plates (), with the decompression void (V) being in atmospheric pressure condition.

Glass panel

To maintain high bonding performance between two glass sheets by metal material, thereby to obtain high gas tightness and bonding strength. A glass panel includes a pair of glass sheets ( A, B) disposed in opposition to each other with forming a gap (V) therebetween, the peripheral edges of the opposed glass sheets ( A, B) being directly bonded to each other by metal material ( ); wherein bonding faces ( Aa) in the opposed surfaces of the glass sheets ( A, B) to be bonded to the metal material ( ) are worked so as to obtain an average surface roughness below 30 nm.

A gas is supplied to the surface of the glass sheet transferred between a heating furnace and a cooling apparatus for tempering the glass sheet. The gas is supplied from the upstream side with respect to the direction of transfer of the glass sheet by an air curtain device. This gas runs along the glass sheet surface (upper surface) downstream with respect to the direction of transfer to obstruct the flow of cooling gas from the cooling apparatus in the upstream direction. The gas prevents cooling air from the cooling apparatus from invading the heating furnace so that the difference of the curvature of the glass sheet on the front and rear part can be eliminated.

Method for manufacturing tempered glass sheet and apparatus for manufacturing the same

In a quenching apparatus for quenching a glass sheet that has been heated and bent in a heating furnace, a cooling gas blows onto the glass sheet to provide a distribution of a temperature and/or a distribution of a static pressure in at least one section in the quenching apparatus. The distribution of a temperature provides different temperatures between the both surfaces of the glass sheet, while the distribution of a static pressure is nonuniform in a part of at least one surface of the glass sheet. The distributions can modify a shape of the glass sheet given in the heating furnace so that a degree of freedom in shape for manufacturing a bent and tempered glass sheet by utilizing its self-weight can be improved.

Method for manufacturing bent and tempered glass sheet and apparatus for

Method for manufacturing tempered glass sheet and apparatus for

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Osaka, Japan

Toru Futagami