Title:
GLASS PLATE MANUFACTURING METHOD, GLASS PLATE, AND GLASS PLATE PACKAGING BODY
Document Type and Number:
WIPO Patent Application WO/2023/218966
Kind Code:
A1
Abstract:
A glass plate manufacturing method according to the present invention includes a cutting step S3 for removing an end section Ga in the width direction of a glass plate G1 in a state in which the glass plate G1 is supported in a vertical position. The cutting step S3 includes a scribing step and a splitting step. In the scribing step, a scribe line SL2 is formed such that the maximum depth of a median crack MC at an intermediate portion MP1 of the scribe line SL2 is less than the maximum depth of a median crack MC at a lower portion BP1 of the scribe line SL2.
Inventors:
OKU HAYATO (JP)
ITO SHIGEYOSHI (JP)
SAWASATO HIROSHI (JP)
ITO SHIGEYOSHI (JP)
SAWASATO HIROSHI (JP)
Application Number:
PCT/JP2023/016482
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)
Download PDF: