Easy-to-open sheet package body

Sewing – Products – Sewn web or sheet

Reexamination Certificate

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Details

C112S130000

Reexamination Certificate

active

11117551

ABSTRACT:
A sheet package body P has a first package body1and a second package body2.The first package body1is disposed on the second package body2by 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 portion4aof the looper thread4forming the stitching D of chain stitch, the stitching D of chain stitch gradually unravels from the sewing end portion, and the both package bodies1, 2are separated from each other.

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patent: 6167825 (2001-01-01), Marchetti
patent: 6332418 (2001-12-01), Hayashi
patent: 6371307 (2002-04-01), Eskes
patent: 9-175564 (1997-07-01), None

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