METHOD FOR MANUFACTURING GLASS FILM

• US 20110197633A1
• Filed: 01/20/2011
• Published: 08/18/2011
• Est. Priority Date: 02/12/2010
• Status: Abandoned Application

• Current Assignee: Nippon Electric Glass Company Limited
• Original Assignee: Nippon Electric Glass Company Limited
• Inventors: Takaya, Tatsuya, TOMAMOTO, Masahiro, Ishibashi, Shinichi, Oda, Hidetaka, Fujiwara, Katsutoshi
• Application Number:
  US13/010,099
• Publication Number:
  US 20110197633A1
• Time in Patent Office: Days
• US Class Current: 65/94
• CPC Class Codes: C03B 17/06 Forming glass sheets
• CPC Class Codes: C03B 17/064 by the overflow downdraw fusion process; Isopipes therefor
• CPC Class Codes: Y02P 40/57 Improving the yield, e-g- reduction of reject rates

Abstract

Provided is a method, including: a melting step of melting glass in a melting furnace 2; a distribution step of supplying the molten glass in the melting furnace 2 to a plurality of branched channels 4; and a forming step of supplying the molten glass flowing out from each of the plurality of branched channels 4 to one of a plurality of forming apparatuses 51 to 53 communicating with the plurality of branched channels 4, respectively, and forming the molten glass into a plate-shaped glass by a down-draw method, in which one or more of the plurality of forming apparatuses 51 to 53 are used to form a glass film having a thickness of 1 to 200 μm.

Claims

1. A method for manufacturing a glass film, comprising:

a melting step of melting glass in a melting furnace;

a distribution step of supplying the molten glass in the melting furnace to a plurality of branched channels; and

a forming step of supplying the molten glass flowing out from each of the plurality of branched channels to each of a plurality of forming apparatuses communicating with the plurality of branched channels respectively, and forming the molten glass into a plate-shaped glass by a down-draw method,

wherein one or more of the plurality of forming apparatuses are used to form a glass film having a thickness of 1 to 200 μ

m.

2. The method for manufacturing a glass film according to claim 1, wherein a forming apparatus other than a forming apparatus for forming a glass film is used to form a plate glass having a thickness of more than 200 μ

m.

3. The method for manufacturing a glass film according to claim 1, wherein the molten glass flowing in each of the plurality of branched channels is imparted with flow resistance.

4. The method for manufacturing a glass film according to claim 1, wherein the glass film is wound in a roll shape.

5. The method for manufacturing a glass film according to claim 1, wherein the down-draw method comprises an overflow down-draw method or a slot down-draw method.

6. The method for manufacturing a glass film according to claim 2, wherein the molten glass flowing in each of the plurality of branched channels is imparted with flow resistance.

7. The method for manufacturing a glass film according to claim 2, wherein the glass film is wound in a roll shape.

8. The method for manufacturing a glass film according to claim 2, wherein the down-draw method comprises an overflow down-draw method or a slot down-draw method.