GLASS PLATE MANUFACTURING METHOD AND MANUFACTURING DEVICE

Title:

GLASS PLATE MANUFACTURING METHOD AND MANUFACTURING DEVICE

Document Type and Number:

WIPO Patent Application WO/2022/130817

Kind Code:

A1

Abstract:

A glass plate manufacturing method, according to the present invention, executes: a scribe step P1 for forming a scribe line S on one surface Ga of a planned cutting part Gp of a glass ribbon G, in cutting a glass plate Gs by cutting the flexible glass ribbon G in the width direction while transporting said ribbon downward in a vertical orientation; and a folding/splitting step P2 in which the planned cutting part Gp is curved so that the one surface Ga side protrudes, and the glass ribbon G is cut by folding and splitting along a scribe line S in a state in which the glass ribbon G is supported by a support member 7 from the other surface Gb side, wherein in the folding/splitting step P2, a portion (to-be-cut part Gx) of the glass ribbon G below the planned cutting part Gp is pulled in the width direction, and a portion of the glass ribbon G supported by the support member 7 is extended in the width direction, after which the planned cutting part Gp is curved so that the one surface Ga side protrudes.

Inventors:

TSUKADA MASAO (JP)
LEE HO SEOK (KR)
HASHI YOSHIHIKO (JP)

Application Number:

PCT/JP2021/040620

Publication Date:

June 23, 2022

Filing Date:

November 04, 2021

Export Citation:

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Assignee:

NIPPON ELECTRIC GLASS CO (JP)
ELECTRIC GLASS KOREA CO LTD (KR)

International Classes:

C03B33/033; B26F3/00; B28D5/00; C03B33/027

Domestic Patent References:

WO2018100981A1	2018-06-07
WO2020129907A1	2020-06-25
WO2017110349A1	2017-06-29
WO2015029888A1	2015-03-05

Foreign References:

JP2016525056A	2016-08-22
JP2013043828A	2013-03-04
JP2015063450A	2015-04-09
JP2013056813A	2013-03-28