Asahi Glass Company, Limited

Hiroshi Tsuji

Takashi Hirotsu

Tatsuo Sugiyama

Yukiyasu Mori

Kenji Maeda

Yoshihiro Watanabe

Takaharu Imamura

Chikao Aruga

Tohru Kawatsura

In a curved laminated glass comprising a plurality of glass plates which are bent in a substantially convex form, laminated and bonded together, an outer glass plate is softened faster than an inner glass plate when they are located in an atmosphere of high temperature which is higher than a temperature capable of bending glass.

Method for bending and laminating a pair of glass plates

Glass plates for a laminated glass are bent and strengthened by provisionally shaping by heating two overlapping glass plates placed on a deadweight bending mold having a shaping surface by elevating the temperature to a temperature capable of bending glass and by locally heating side portions of the two overlapping glass plates to be deeply bent at a higher temperature in a heating/pressing stage so that the two overlapping glass plates are provisionally shaped by their own deadweight into a shape substantially corresponding to the shape of the shaping surface of the bending mold, pressing a portion of the two overlapping glass plates to be deeply bent from the top by a pressing member after the provisional shaping step in a heating/pressing stage, separating the two overlapping glass plates from the bending mold by pushing up the portion of the glass plates other than the deeply bent peripheral portion of the two overlapping glass plates thereby cooling the peripheral portion of the glass plates in a peripheral portion strengthening stage, and cooling the overlapping glass plates to atmospheric temperature.

Method and apparatus for bending overlapping glass plates to form a

Two glass plates on a bending mold are heated in a heating/bending furnace so that they are subjected to provisionally deep-bending operations by their own deadweight, and the provisionally shaped deep-bent portion is pressed by an auxiliary pressing member to thereby form a laminated glass for, for instance, an automobile.

Method of and an apparatus for bending glass plates for a laminated

Two glass plates on a bending mold are heated in a heating/bending furnace so that they are subjected to provisional deep-bending operations by their own deadweight, and the provisionally shaped deep-bent portion is pressed by an auxiliary pressing member to thereby form a laminated glass for, for instance, an automobile.

Method of and an apparatus for bending glass plates for a laminated glass

A method for bending a glass plate for a laminated glass comprises a step of heating at least two glass plates separately at a temperature suitable to conduct bending operation and bending them; a step of gradually cooling each of them; a step of transferring the at least two glass plates onto a bending ring mold in an overlapping state; and a step of heat-shaping the overlapping glass plates on the bending ring mold so that the surfaces of the glass plates are fitted to and are in coincidence with each other.

Growing community of inventors

Yokohama, Japan

Hiroshi Tsuji