Glass shaping ring having a thermal insulating member and method

Details Glass shaping ring having a thermal insulating member and method Glass shaping ring having a thermal insulating member and method

1989-09-13

1991-01-08

Woodard, Joye L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65104, 65107, 65288, 65291, C03B 23027

Patent

active

049832000

ABSTRACT:
A method of reducing localized tensile stresses in shaped glass sheets formed by sag bending. An unperforated thermal insulating member is mounted throughout the area within a shaping rail and spaced below a heat softened glass sheet shaped on the shaping rail to thermally insulate the glass from heat reradiated from the shaping rail and reduce air circulation beneath the sheet so as to support structure during the cooling of the shaped glass sheet and provide more uniform cooling of the entire glass sheet.

REFERENCES:
patent: 3264082 (1966-08-01), Golightly
patent: 3265488 (1966-08-01), Ross et al.
patent: 3278287 (1966-10-01), Leflet et al.
patent: 3976462 (1976-08-01), Sutara
patent: 4375978 (1983-03-01), Reese et al.
patent: 4687501 (1987-08-01), Reese

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