Method for manufacturing glass plates, glass plates, and glass plate packaging.
The method addresses the issue of scribe mark-induced cracking in glass plates by forming scribe lines with varying median crack depths, preventing damage during stacking and transport, and minimizing glass powder generation.
JP7869967B2Active Publication Date: 2026-06-04NIPPON ELECTRIC GLASS CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NIPPON ELECTRIC GLASS CO LTD
- Filing Date
- 2022-05-10
- Publication Date
- 2026-06-04
Smart Images
Figure 0007869967000001 
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Abstract
To prevent a damage of a glass plate loaded on a pallet in an upright orientation.SOLUTION: A method of manufacturing a glass plate includes a cutting step S3 of removing an end part Ga of a glass plate G1 in a width direction with the glass plate G1 supported in an upright orientation. The cutting step S3 includes a scribing step, and a bending and dividing step. In the scribing step, a scribe line SL2 is formed so that a maximum depth of a median crack MC in a bottom part BP1 of the scribe line SL2 is shallower than that in an intermediate part MP1 or upper part UP1 of the scribe line SL2.SELECTED DRAWING: Figure 2
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