Method of and apparatus for bending and tempering glass sheets

Details Method of and apparatus for bending and tempering glass sheets Method of and apparatus for bending and tempering glass sheets

C - Chemistry, Metallurgy

03

B

49/7

C03B 23/023 (2006.01) C03B 23/025 (2006.01) C03B 23/035 (2006.01) C03B 27/044 (2006.01) C03B 35/16 (2006.01)

Patent

CA 1308257

(57) Abstract The invention relates to a method of bending a glass sheet to be tempered as well as to a glass sheets bend- ing and tempering apparatus. An array of conveyor rollers in a glass sheets bending and tempering sect- ion is adapted to be curved around an axis of curva- ture transverse to the traveling direction in a manner that, beginning from a horizontal plane, the plane of a roller line curves with a continuously diminishing radius of curvature until the final radius of curva- ture is reached. During the curving process, the tan- gent of the mid-portion of a curved conveyor section is maintained substantially in a horizontal plane. Thus, each point in a glass sheet curves substantial- ly at the same rate over the entire glass sheet area and, hence, local rapid deformations do not occur. During the curving process, a glass sheet is maintain- ed in motion by means of the rollers of a curved roll- er conveyor.

545979

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