Annealing apparatus and method for float glass
AssigneeLG Chem, Ltd.
InventorsWoo-Hyun KIM, Sang-Oeb Na, Yang-Han Kim, Kil-Ho Kim, Heui-Joon Park, Jin Han, Dong-Shin Shin
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Abstract
An annealing apparatus for a float glass continuously anneals a glass ribbon molded in a float bath. The annealing apparatus includes a lehr housing having an inlet and an outlet for the glass ribbon, a plurality of lehr rolls rotatably installed to the lehr housing in a width direction of the lehr housing, and labyrinth seals installed between the lehr rolls and sidewalls of the lehr housing, respectively, to prevent sulfurous acid gas supplied into the lehr housing from discharging out.
Claims6
An annealing apparatus for a float glass, which continuously anneals a glass ribbon molded in a float bath, the annealing apparatus comprising:
- a lehr housing which comprises an inlet and an outlet for the glass ribbon;
- a plurality of lehr rolls rotatably installed to the lehr housing in a width direction of the lehr housing;
- and
- labyrinth seals installed between the lehr rolls and sidewalls of the lehr housing, respectively, to prevent sulfurous acid gas supplied into the lehr housing from discharging out.
An annealing method for a float glass, which continuously anneals a glass ribbon, molded in a float bath, in a lehr housing to which lehr rolls are installed, the annealing method comprising:
- supplying sulfurous acid gas into the lehr housing to reduce a friction between a bottom of the glass ribbon and lehr rollers and to reduce a defect occurring at a surface of the glass ribbon;
- and
- sealing gaps between the lehr housing and the lehr rolls by labyrinth seals installed at outer peripheries of the lehr rolls so that the sulfurous acid gas supplied into the lehr housing is not discharged through the gaps.
Dependencies are inferred from the claim text.