| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for bending a glass sheet which can appropriately prevent its surface roughening due to suctioning. SOLUTION: Provided is a method for bending a glass sheet comprising a heating step of heating a glass sheet to soften the glass sheet and a bending step of bending the heated and softened glass sheet to give a predetermined shape thereto, wherein the bending step comprises a step of pressing the heated and softened glass sheet G whose edges are supported by a supporting frame 60 against the forming surface 73 of a bending mold 70 opposed to the supporting frame, and a vacuum forming step of providing negative pressure through a plurality of suction holes 74 formed on the forming surface so that the shape of the pressed glass sheet is bent along the forming surface of the mold, and wherein in the vacuum forming step, the plurality of suction holes are grouped into at least two groups, and the raised negative pressure for the respective groups are lowered at different timings. COPYRIGHT: (C)2007,JPO&INPIT
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