Method for manufacturing glass sheet, and glass sheet and glass sheet assembly
Number of patents in Portfolio can not be more than 2000
United States of America
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Dec 31, 2024
Grant Date -
Jun 30, 2022
app pub date -
Apr 3, 2020
filing date -
Apr 3, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a method of manufacturing a glass sheet having a through hole, including: a first step of preparing a glass sheet (1); and a second step of forming a through hole (2) in the glass sheet (1), wherein the first step includes, under conditions of: θ representing an inclination angle of an inner wall surface (2a) of the through hole (2) with respect to a sheet thickness direction; D representing a minimum hole width of the through hole (2); and an allowable variation range of the minimum hole width D being represented by A % of the minimum hole width D, preparing the glass sheet (1) for which a sheet thickness variation range ΔT satisfies the following relationship when the through hole (2) is gradually widened toward only one side of the sheet thickness direction: ΔT≤(D×A/tan θ)/200.
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