METHOD AND APPARATUS FOR MANUFACTURING FLOAT GLASS, AND FLOAT GLASS

• Main Authors: KOBAYASHI GENKI, SHIRAISHI YOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 25.08.2016
• Subjects: BLASTING; CHEMISTRY; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GLASS; HEATING; KILNS; LIGHTING; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; MECHANICAL ENGINEERING; METALLURGY; MINERAL OR SLAG WOOL; OPEN SINTERING OR LIKE APPARATUS; OVENS; RETORTS; WEAPONS

PROBLEM TO BE SOLVED: To provide a method for manufacturing float glass, capable of reducing the plate thickness deviation of the float glass.SOLUTION: A method for manufacturing float glass includes adjusting a flow rate of a molten glass 2 flowing on a spout lip 14 by a tuyere 18 to continuously supply the molten glass on a molten metal 4 in a bathtub 10 and fluidizing the molten glass 2 on the molten metal 4 to form a glass ribbon having a predetermined plate thickness. A space above the bathtub 10 is partitioned into a spout space on the upstream side and a main space on the downstream side by a partition 26. A heat source 27 arranged in a molten glass inflow space formed by the tuyere 18, the partition 26 and the molten glass 2 out of the spout space heats the molten glass 2.SELECTED DRAWING: Figure 2 【課題】フロートガラスの板厚偏差を低減したフロートガラス製造方法を提供する。【解決手段】スパウトリップ１４上を流れる溶融ガラス２をツイール１８で流量調整して浴槽１０内の溶融金属４上に連続的に供給し、前記溶融ガラス２を前記溶融金属４上で流動させて所定の板厚のガラスリボンに成形するフロートガラス製造方法であって、前記浴槽１０の上方空間は、仕切り壁２６により上流側のスパウト空間と下流側のメイン空間とに仕切られ、前記スパウト空間のうち前記ツイール１８と前記仕切り壁２６と前記溶融ガラス２とで形成される溶融ガラス流入空間に配設される加熱源２７が前記溶融ガラス２を加熱する、フロートガラス製造方法。【選択図】図２