| 摘要 |
A sheet package body P has a first package body 1 and a second package body 2. The first package body 1 is disposed on the second package body 2 by overlapping in part, said overlapped portion L is set in a double chain stitch sewing machine and is sewn. A stitching D of chain stitch is formed said portion L. By pulling the sewing end portion 4 a of the looper thread 4 forming the stitching D of chain stitch, the stitching D of chain stitch gradually unravels from the sewing end portion, and the both package bodies 1, 2 are separated from each other.
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