Patent ID: 6357263
Filing Date: 2002-03-19
Classification: C03B

Abstract:
A method for bending a glass sheet, which comprises putting an unformed glass sheet on a ring mold to support peripheral portions of the unformed glass sheet thereon, and carrying the ring mold into a heating furnace to bend the glass sheet; and which further comprises a first forming process to heat the unformed glass to a bending temperature to bend the unformed glass sheet so as to form the unformed glass sheet into an intermediate glass sheet, and a second forming process to support the peripheral portions of the intermediate glass on a forming surface conformed with a final shape of the glass sheet to be formed and to form the intermediate glass sheet into a glass sheet having a certain bent shape along the forming surfaces; wherein the intermediate glass sheet is formed by bending portions of the unformed glass sheet in a short side direction in the first forming process, and the portions of the intermediate glass sheet in the short direction are further bent so as to provide a certain bent surface and portions of the intermediate glass sheet in a long side direction is bent.