Overflow downdraw method

From Wikipedia, the free encyclopedia

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 Asahi Glass Co., Corning, Nippon Electric Glass,^[1] Samsung Corning Precision Glass, 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 '60s as a method for manufacturing automotive windshields. Shelved for years, the technology was reintroduced to supply the flat screen display market. A sheet of glass is formed when molten glass flows down both sides of a tapered trough and rejoins, or fuses, at the bottom.

References

↑ "Create a New Era, Open up the Future". Nippon Electric Glass Co.,Ltd. 2013. Retrieved 2013-05-20.

External links

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

v t e 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

Natural processes	Radiative processes Opal formation Sea glass Shock metamorphic glasses/Impactite Vitrified sand Volcanic glasses

See also	Glossary of glass art terms Glass recycling

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.