Glass manufacturing – Processes – Utilizing parting or lubricating layer
Patent
1990-08-24
1992-01-07
Woodard, Joye L.
Glass manufacturing
Processes
Utilizing parting or lubricating layer
65106, 65107, C03B 23035
Patent
active
050787705
ABSTRACT:
The invention relates to a method for bending difficult bending shapes such as an S-shape in a glass sheet. The downward bending of an outline-mould supported, heated glass sheet is assisted by a non-engaging lower partial surface mould used for blowing to a bending line (BL) or its vicinity a gas having a temperature at least equal to that of glass, the gas serving simultaneously as a glass carrier preventing its falling or excessive downward sagging. Blasting orifices in the shaping surface are adapted to concentrate heating on the most problematic areas of a bending line.
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patent: 3223443 (1965-12-01), Misson
patent: 3468645 (1969-09-01), McMaster et al.
patent: 3756797 (1973-09-01), Akeyoshi et al.
patent: 4508556 (1985-04-01), Bennett et al.
patent: 4828598 (1989-05-01), Imamura et al.
patent: 4979977 (1990-12-01), Frank et al.
Lehto Esko O.
Vehmas Jukka H.
Tamglass Oy
Woodard Joye L.
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