| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bubbling device defoaming fine bubbles and forming bubbles having the small change of the diameter of the bubbles for a long period, a method for manufacturing a glass article using the bubbling device and a glass melting apparatus. <P>SOLUTION: The bubbling device 10 is structured by providing a gas introducing pipe 20 for introducing a gas into a gas retention part 31 having the periphery surrounded by a heat resistant outer shell part 30 having at least one or more gas jetting ports 40 and an opening port 33a arranged apart from the gas jetting port 40 to assist the jetting of the gas. The manufacturing method has a melting step, a homogenization step and a molding step, wherein the homogenization step forms bubbles by at least one bubbling device 10. The glass melting apparatus comprises a glass raw material charge port and a glass melting tank having a molten glass flow out port. The opening end position of the glass jetting port 40 of the bubbling device 10 is arranged in a range of≥20% and≤80% of the straight-line distance from the raw material charge port toward the flow out port. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
