- Overflow downdraw method
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The overflow downdraw method or fusion method is a technique for producing flat glass. The key advantage of this technique as compared to the float glass process is the pristine surfaces, not touched by molten tin. The technique is used for the production of flat panel display glass by the companies Corning, Samsung Corning Precision Glass, Nippon Electric Glass Co. Ltd. (NEG) and various other companies operating in the field of display glass and other types of thin glass.
The fusion method was originally conceived by Corning in the 60's as a method for manufacturing automotive windshields. Shelved for years, the technology was reintroduced to supply the flat screen display market.
References
- US Patent 851627, June 15, 2004
- US Patent 6990834, January 31, 2006
- Huey-Jiuan Lin, Wei-Kuo Chang: Design of a sheet forming apparatus for overflow fusion process by numerical simulation; Journal of Non-Crystalline Solids, Volume 353, Issues 30-31, 1 October 2007, Pages 2817-2825 Full text article
- description of the fusion overflow process at the Corning website
Glass forming techniques Commercial techniques - Float glass process
- Blowing and pressing (containers)
- Extrusion / Drawing (fibers, glasswool)
- Drawing (optical fibers)
- Precision glass moulding
- Overflow downdraw method
- Pressing
- Casting
- Cutting
- Flame polishing
- Chemical polishing
- Diamond turning
- Rolling
Artistic and historic techniques - Beadmaking
- Blowing
- Blown plate
- Broad sheet
- Caneworking
- Crown glass
- Cylinder blown sheet
- Engraving
- Etching
- Fourcault process
- Fusing
- Lampworking
- Machine drawn cylinder sheet
- Millefiori
- Polished plate
- Slumping
- Stained glass fusing
- Stained glass production
See also Categories:- Glass forming
- Glass stubs
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