Method for bending and tempering a glass sheet

Details Method for bending and tempering a glass sheet Method for bending and tempering a glass sheet

1992-02-26

1993-08-03

Woodard, Joye L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65106, 65107, C03B 23023, C03B 27044

Patent

active

052324826

ABSTRACT:
The invention relates to a method for bending and tempering a glass sheet. A glass sheet is supported on a ring mould during the course of heating, bending and tempering and the glass is heated for gravitational bending thereof. After a bending operation, the glass temperature is allowed to decrease to the range of 500.degree.-550.degree. C. throughout, followed by increasing the overall glass temperature to a tempering temperature by heating as quickly and uniformly as possible.

REFERENCES:
patent: 3914119 (1975-10-01), Jack et al.
patent: 3951634 (1976-04-01), Hall et al.
patent: 4804397 (1989-02-01), Stas et al.
patent: 5147440 (1992-09-01), Leponen et al.

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