| 摘要 |
PROBLEM TO BE SOLVED: To prevent the decrease of holding power of a zipper part due to insertion and ejection of a mold detection axis. SOLUTION: A zipper opening is made like a trumpet so that a mold detection axis is easy to be inserted and securely held, and a ring is inserted around a slitting part so that the zipper slitting part is not opened more than the necessity. COPYRIGHT: (C)2006,JPO&NCIPI
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