| 摘要 |
<p>The process comprises introducing a frame (3) carrying glass sheets (1, 2) in a furnace that brings the sheets to softening temperature, and subjecting the partially bended sheets to a pressure unit that applies a rotation movement on a significant part of a sheet surface (greater than 30%). The pressure is gradually exerted from periphery or near the periphery of the frame towards the central part of the sheet. The progressive pressure unit comprises two elements arranged on both sides of glass axis, where the two components act simultaneously and symmetrically. The process comprises introducing a frame (3) carrying glass sheets (1, 2) in a furnace that brings the sheets to softening temperature, and subjecting the partially bended sheets to a pressure unit that applies a rotation movement on a significant part of a sheet surface (greater than 30%). The pressure is gradually exerted from periphery or near the periphery of the frame towards the central part of the sheet. The progressive pressure unit comprises two elements arranged on both sides of glass axis, where the two components act simultaneously and symmetrically. The pressure is exerted so that the glass sheet undergoes a modification such as deepening of bending greater than 5 mm at any point on the surface. The gradual application of the pressure is conducted when the temperature of the glass sheet surface is at most equal to the temperature inside the sheet, where the overall temperature of the sheet does not increase. An independent claim is included for a bended glass sheets.</p> |
