| 摘要 |
A zipper unit for a packaging bag is provided comprising a sealing zipper to seal the packaging bag in a ally sealed state. The sealing zipper is configured to be opened with the opening operation of the packaging bag . The zipper unit also comprises a locking zipper having a fit-engagement strength stronger than the fit-engagement strength of the sealing zipper . A releasing cutout portion is provided in a part of a fit-engagement body of the locking zipper . The locking zipper is configured to be opened from the releasing cutout portion. The locking zipper may be situated as the first zipper at the opening of the packaging bag to prevent the packaging bag from being opened, for example, by a child. The sealing zipper may be provided as the second zipper closest to the inside of the packaging bag and accessible by release or opening of the locking zipper. |
