US 12,139,432 B2
Method for manufacturing glass plate and apparatus for manufacturing same
Taisei Matsubushi, Shiga (JP); Masao Nakajima, Shiga (JP); and Hiroshi Takimoto, Shiga (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Appl. No. 17/802,762
Filed by Nippon Electric Glass Co., Ltd., Shiga (JP)
PCT Filed Feb. 22, 2021, PCT No. PCT/JP2021/006686
§ 371(c)(1), (2) Date Aug. 26, 2022,
PCT Pub. No. WO2021/182095, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-042990 (JP), filed on Mar. 12, 2020.
Prior Publication US 2023/0084567 A1, Mar. 16, 2023
Int. Cl. C03B 33/033 (2006.01); B28D 5/00 (2006.01)
CPC C03B 33/033 (2013.01) [B28D 5/0011 (2013.01); B28D 5/0052 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A manufacturing method for a glass sheet, comprising:
a preparation step of preparing a glass sheet having a scribe line formed thereon;
a positioning step of placing the prepared glass sheet on a placement table and positioning the glass sheet so that the scribe line is positioned in a bending stress applying portion of the placement table; and
a splitting step of splitting the glass sheet along the scribe line by applying, after the positioning step, a bending stress to a formation region of the scribe line by the bending stress applying portion,
wherein the positioning step comprises:
laying a resin sheet under the glass sheet on the placement table; and
aligning one side of the glass sheet extending in a direction along the scribe line with a mark projected onto the placement table by a laser marker.