Bend-shaping press mold, method of bend-shaping a glass plate an

Details Bend-shaping press mold, method of bend-shaping a glass plate an Bend-shaping press mold, method of bend-shaping a glass plate an

1990-10-12

1992-04-28

Woodard, Joye L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65107, 65273, 65287, C03B 2303

Patent

active

051084805

ABSTRACT:
A bend-shaping press mold comprising a pair of pressing dies for bending a glass plate into a shape having a convex surface and a concave surface in a plane by pressing the glass plate with the pair of pressing dies, wherein each of the pressing dies has a convex surface portion to shape the glass plate by pressing it from each side which is finally shaped to have a concave surface portion, and the convex surface portion of one of the pressing dies is not substantially in contact with the glass plate in pressing operations when the convex surface portion of the other die is in contact with the glass plate.

REFERENCES:
patent: 4272275 (1981-06-01), Reese
patent: 4746348 (1988-05-01), Frank
patent: 4778507 (1988-10-01), Aruga et al.
patent: 4828598 (1989-05-01), Imamura et al.
patent: 4909820 (1990-03-01), Hirotsu et al.

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