The overflow downdraw method or fusion method is a technique for producing flat glass. A sheet of glass is formed when molten glass overflows from a supply trough, flows down both sides, and rejoins (fuses) at the tapered bottom, where it is drawn away in sheet form.
The overflow downdraw method or fusion method is a technique for producing flat glass. A sheet of glass is formed when molten glass overflows from a supply trough, flows down both sides, and rejoins (fuses) at the tapered bottom, where it is drawn away in sheet form.
Source: Wikipedia "Overflow downdraw method" · CC BY-SA 4.0
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