Method of bending and tempering glass sheets

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

1997-02-28

1998-04-07

Czaja, Donald E.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65106, C03B 23035

Patent

active

057359229

ABSTRACT:
Glass sheets are press bent and tempered, especially for use as glazings in vehicles. Such glazings are required to be accurately bent to a complex shape while meeting high standards of optical quality and fracture safety at an acceptable cost. A method of bending and tempering a glass sheet is provided comprising heating the sheet in a furnace, including heating at least one portion of the sheet to a higher temperature than another portion, conveying the sheet out of the furnace and into a press bending station, shaping the sheet by pressing it between opposed complementary upper and lower press members, at least one of the members being internally heated, transferring the bent glass sheet onto a shuttle carrier ring conforming to the periphery of the sheet, and tempering the sheet while supported on the carrier ring. A corresponding apparatus is also described.

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