Title:
MANUFACTURING METHOD FOR GLASS PLATE, GLASS PLATE, AND GLASS PLATE PACKAGING BODY
Document Type and Number:
WIPO Patent Application WO/2023/218961
Kind Code:
A1
Abstract:
This manufacturing method for a glass plate comprises a cutting step S3 for removing an edge section Ga in the width direction of a glass plate G1 in a state where the glass plate G1 is supported in a vertical orientation. The cutting step S3 includes a scribing step and a break-off step. In the scribe step, a scribe line SL2 is formed such that the maximum depth of a median crack MC in a lower section BP1 of the scribe line SL2 is less than the maximum depth of the median crack MC in an intermediate section MP1 or an upper section UP1 of the scribe line SL2.
Inventors:
OKU HAYATO (JP)
ITO SHIGEYOSHI (JP)
SAWASATO HIROSHI (JP)
ITO SHIGEYOSHI (JP)
SAWASATO HIROSHI (JP)
Application Number:
PCT/JP2023/016459
Publication Date:
November 16, 2023
Filing Date:
April 26, 2023
Export Citation:
Assignee:
NIPPON ELECTRIC GLASS CO (JP)
International Classes:
C03B33/02; B26F3/00; B28D5/00
Domestic Patent References:
| WO2017199681A1 | 2017-11-23 |
Foreign References:
| JP2014159359A | 2014-09-04 | |||
| JP2000061676A | 2000-02-29 | |||
| JP2019194006A | 2019-11-07 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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