| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing phase-separated glass difficult in glass molding with high standard size accuracy, a porous glass tube with the high standard size accuracy, and a porous glass molding, in porous glass.SOLUTION: A desired phase-separated base glass tube is molded by a redraw method from a so-called mother glass tube, which is a mother body thereof. In a method for producing the mother glass tube, a long bottle is molded in a mold by a blowing molding method, and the bottle is cut at a bottle neck part and a bottle bottom part to form a bottle body part as a mother glass tube. |
