| 摘要 |
PROBLEM TO BE SOLVED: To manufacture high quality wide plate glass excellent in uniformity of thickness and surface smoothness. SOLUTION: Both the end parts 12A, 12A of the supporting base 12 of the forming device 10 is made folded down shape making a step downward. By that, the vicinity part of both the ends 13A, 13A of the glass ribbon 13 are folded down by gravity to the double end part 12A, 12A of the supporting base 12, and the weight of the vicinity of folding parts of both the ends 13A, 13A are applied to the glass ribbon 13, thereby the glass ribbon doesn't shrink in cross direction.
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