JPWO2021113132A5

JPWO2021113132A5 -

Info

Publication number: JPWO2021113132A5
Application number: JP2022533151A
Authority: JP
Publication date: 2023-09-27

Claims

A method of manufacturing a glass ribbon, the method comprising:
moving the ribbon of glass-forming material along a travel path in a travel direction;
sensing the thickness of the ribbon of glass-forming material at a plurality of locations on the ribbon of glass-forming material;
identifying a location among the plurality of locations where a corresponding thickness exceeds a target thickness;
correlating a rate of thickness change and a thickness difference between the corresponding thickness and the target thickness with laser power;
directing a laser beam at the laser power toward the ribbon of glass-forming material to reduce viscosity at the location to achieve the target thickness at the location;
A method characterized by comprising:

5. The step of identifying comprises identifying a second location of the plurality of locations where a second corresponding thickness at the second location is less than the target thickness. The method described in 1.

Claim further comprising directing a cooling liquid toward the ribbon of glass-forming material to increase viscosity at the second location to achieve the target thickness at the second location. The method described in Section 2.

flowing a first stream of glass-forming material over a first weir of the forming wedge;
flowing a second stream of glass-forming material over a second weir of the forming wedge;
melting the first stream of glass-forming material and the second stream of glass-forming material to form a molten ribbon;
4. The method according to any one of claims 1 to 3, further comprising:

5. The step of sensing the thickness of the ribbon of glass-forming material is performed at the plurality of locations spaced apart along a first axis substantially perpendicular to the direction of travel. The method described in 1.

The sensing the thickness of the ribbon of glass-forming material includes separating the first ribbon portion of the ribbon of glass-forming material from a second ribbon portion of the ribbon of glass-forming material at a first ribbon portion of the ribbon of glass-forming material. 6. A method according to any one of claims 1 to 5, characterized in that it is carried out after.

A method of manufacturing a glass ribbon, the method comprising:
moving the ribbon of glass-forming material along a travel path in a travel direction;
sensing the thickness of the ribbon of glass-forming material at a plurality of locations on the ribbon of glass-forming material;
a first corresponding thickness at a first location of the plurality of locations that exceeds a target thickness; and a second corresponding thickness at a second location of the plurality of locations. is less than the target thickness;
directing a laser beam toward the ribbon of glass-forming material to reduce viscosity at the first location to achieve the target thickness at the first location;
directing a cooling liquid toward the ribbon of glass-forming material to increase viscosity at the second location to achieve the target thickness at the second location;
A method characterized by comprising:

flowing a first stream of glass-forming material over a first weir of the forming wedge;
flowing a second stream of glass-forming material over a second weir of the forming wedge;
melting the first stream of glass-forming material and the second stream of glass-forming material to form a molten ribbon;
8. The method of claim 7, further comprising:

The step of directing the laser beam includes directing the laser beam into the first stream of glass-forming material flowing over the first weir, the second stream of glass-forming material flowing over the second weir. 9. The method of claim 8, comprising directing one or more of the streams or melt ribbons.

The step of directing the cooling liquid includes directing the cooling liquid into the first stream of glass-forming material flowing over the first weir, the second stream of glass-forming material flowing over the second weir. 10. A method according to any one of claims 8 to 9, comprising the step of directing one or more of the streams or melt ribbons.

The sensing the thickness of the ribbon of glass-forming material includes separating the first ribbon portion of the ribbon of glass-forming material from a second ribbon portion of the ribbon of glass-forming material at a first ribbon portion of the ribbon of glass-forming material. 11. A method according to any one of claims 7 to 10, characterized in that it is carried out after.

calculating a time delay between the separation of the first ribbon portion and the sensing of the thickness;
directing the laser beam and the cooling liquid toward the second ribbon portion based on the time delay;
12. The method of claim 11, further comprising: