Process for bending glass sheets

Details Process for bending glass sheets Process for bending glass sheets

1994-11-04

1998-02-03

Griffin, Steven P.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65107, 65273, 65287, C03B 23025, C03B 23035

Patent

active

057139768

ABSTRACT:
Process for bending glass sheets, particularly in pairs, in which the glass sheets undergo a pre-bending under the effect of gravity in a horizontal position on a concave annular bending ring (3) whose profile corresponds to the desired final profile of the glass sheets, until the edges of the glass plates are applied entirely to the bending block (3). A monolithic convex bending block (31) is then applied over the whole surface and acts from above on the glass sheets (21). The inner part of the sheets then undergoes supplementary bending which gives it the desired final shape, the glass sheets being pressed by suction, against the monolithic convex bending block, at the edge of the monolithic convex bending block (11).

REFERENCES:
patent: 3778244 (1973-12-01), Nedelec et al.
patent: 4579577 (1986-04-01), Claassen
patent: 4609391 (1986-09-01), McMaster
patent: 4775402 (1988-10-01), Letemps et al.
patent: 4778507 (1988-10-01), Aruga et al.
patent: 4806140 (1989-02-01), Krug et al.
patent: 4813993 (1989-03-01), Letemps et al.
patent: 5017210 (1991-05-01), Petitcollin et al.
patent: 5071461 (1991-12-01), Hirotsu et al.
patent: 5135558 (1992-08-01), Petitcollin et al.
patent: 5296014 (1994-03-01), Lesage et al.

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