Patent ID: 6240746
Filing Date: 2001-06-05
Classification: C03B

Abstract:
A method for bending glass sheets, comprising:providing a plurality of molds which are configured to carry the glass sheets;conveying the molds which carries the glass sheets into a heating furnace to bend the glass sheets so as to follow the molds, the heating furnace including a plurality of heating zones and an annealing zone which is provided downstream of the plurality of heating zones;heating the glass sheets to a forming temperature in the plurality of heating zones while the molds are conveyed in the plurality of heating zones, the molds staying for a certain period (T.sub.0) in each of the plurality of heating zones except for a most downstream heating zone just before the annealing zone, a variable period (T.sub.1) during which the molds stay in the most downstream heating zone being at most the certain period (T.sub.0) and variable according to a target curvature of the glass sheets; andannealing the glass sheets in the annealing zone.