Vacuum platen for sharp bends

Details Vacuum platen for sharp bends Vacuum platen for sharp bends

1988-04-29

1989-10-31

Woodward, Joye

Glass manufacturing

Preform reshaping means

Sheet bending mold

65273, C03B 2303

Patent

active

048774375

ABSTRACT:
Apparatus (10) for bending glass sheets (12) disclosed provides press bending between a shaping surface (16), and a press ring (26) of a complementary shape. The apparatus (10) utilizes vacuum drawn through vacuum chambers (22, 30) and thereby on the shaping surface (16), to control the bending and avoid negative curvature associated with press bending sharp bends into glass sheets (12).

REFERENCES:
patent: 3846104 (1974-11-01), Seymour
patent: 4470837 (1984-09-01), Seymour
patent: 4720296 (1988-01-01), Bartusel et al.

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