Title:
METHOD FOR PRODUCING GLASS FILM
Document Type and Number:
WIPO Patent Application WO/2022/153859
Kind Code:
A1
Abstract:
Provided is a method for producing a glass film, the method making it possible to prevent any decline in workability and to accurately cut a mother glass film along a planned cutting line without damaging the upper surface of the glass film. A method for producing a glass film G in which an initial crack D is formed in part of a planned cutting line L1 of a mother glass film MG in a state in which bending stress is applied to the planned cutting line L1, whereby the initial crack D is advanced along the planned cutting line L1 and the mother glass film MG is cut, the mother glass film being placed on a surface plate 2 that generates negative suction force on the upper-surface 2a side so that a protruding portion B, which is a portion where an end portion A of the mother glass film MG protrudes, is formed, and the planned cutting line L1 being provided in the protruding portion B.
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Inventors:
YAMASHIRO RIKU (JP)
TSUJIMURA FUMIHITO (JP)
MORI HIROKI (JP)
TSUJIMURA FUMIHITO (JP)
MORI HIROKI (JP)
Application Number:
PCT/JP2021/048548
Publication Date:
July 21, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
B26F3/00; C03B33/033; B28D5/00; B28D7/04
Domestic Patent References:
| WO2009157440A1 | 2009-12-30 | |||
| WO2018066508A1 | 2018-04-12 | |||
| WO2015029888A1 | 2015-03-05 | |||
| WO2020003947A1 | 2020-01-02 |
Foreign References:
| JP2012201573A | 2012-10-22 | |||
| JP2008308368A | 2008-12-25 | |||
| JP2006317484A | 2006-11-24 | |||
| JP2019182685A | 2019-10-24 | |||
| JPH09202635A | 1997-08-05 | |||
| JP2017177452A | 2017-10-05 |
Attorney, Agent or Firm:
YANO INTERNATIONAL PATENT ATTORNEYS OFFICE, P.C. (JP)
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