| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily-unsealable means capable of easily obtaining a large opening part in one operation. SOLUTION: In a packaging having an unsealing cut tape on a back side of a sheet constituting the packaging, the strength of the sheet of the packaging at a part with a sheet piece laminated thereon is increased by interposing the sheet piece 3 of the shape in which the width is increased toward the unseal- advancing direction between the sheet and the cut tape 2 on the surface of the sheet 1, and the tear is guided along an outer edge of the laminated sheet piece.
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