| 摘要 |
To provide a packaging material having an opening mechanism capable of easily opening an upper face of a packaging sheet for packaging food or other items by only a one-touch operation of the upper face being pulled to counter directions, the packaging material has a packaging sheet opening mechanism 2 comprising a perforated line 3 formed at a packaging sheet 1 and a belt-shaped cover sheet 4 provided at the inside of the perforated line 3 of the packing sheet 1 so as to position the perforated line 3 approximately at a center in the longitudinal direction an one side end edge in the longitudinal direction of the belt-shaped cover sheet 4 being adhered so as not to contact it with the perforated line 3.
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