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    • 4. 发明申请
    • Methods of fabricating flat glass with low levels of warp
    • 制造低翘曲平板玻璃的方法
    • US20070062219A1
    • 2007-03-22
    • US11233565
    • 2005-09-22
    • John BlevinsRobert NovakGeorge Shay
    • John BlevinsRobert NovakGeorge Shay
    • C03B13/00C03B25/00
    • C03B17/067C03B18/22Y02P40/57
    • A method of fabricating glass sheets (13) is provided in which the sheets are cut from a glass ribbon (15) composed of a glass having a glass transition temperature range (GTTR). The ribbon (15) is formed by a drawing process in which edge rollers (27a,27b) contact the glass ribbon (15) at a location along the length of the ribbon where the temperature along the center line (17) of the ribbon (15) is above the GTTR. The edge rollers (27a,27b) locally cool the ribbon (15), and the cooling produces a sine wave type buckling (S-warp) along the edges of the glass sheets (13). The S-warp is reduced or eliminated by heating the bead portions (21a, 21b) of the ribbon (15) and/or portions of the ribbon (the S-warp portions 25a and 25b) which are located next to the bead portions (21a, 21b) and/or by cooling the center portion of the ribbon (15) at least one location along the length of the ribbon (15) where the temperature at the ribbon's center line (17) is within the GTTR.
    • 提供了一种制造玻璃板(13)的方法,其中从由玻璃化转变温度范围(GTTR)的玻璃构成的玻璃带(15)切割片材。 带状物(15)通过拉丝工艺形成,其中边缘辊(27a,27b)沿着沿着带的长度的位置接触玻璃带(15),其中沿着沿着中心线(17)的温度 丝带(15)位于GTTR之上。 边缘辊(27a,27b)局部地冷却色带(15),并且冷却沿着玻璃板(13)的边缘产生正弦波型弯曲(S形翘曲)。 通过加热带状物(15)的胎圈部分(21a,21b)和/或位于毗邻的带状物(S形经线部分25a和25b)的部分,S形经纱被减少或消除 胎圈部分(21a,21b)和/或通过沿色带(15)的长度的至少一个位置冷却色带(15)的中心部分,其中色带中心线(17)处的温度在其内 GTTR。