| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure in which a base sheet becoming an inner box in folded to cause a film arranged on the base sheet to be tensioned and a packaged item inserted between the film and the base sheet is package on the base sheet. SOLUTION: A base sheet constituting an inner box is comprised of a holding region formed inside when the box is developed; bent pieces extending and bendable outside a folding part formed along a circumferential edge of the holding region; and a film overlapped on the base sheet to enable an end part to extend up to a bent piece, having a part adhered to the bent piece, the other part to be engaged by an engagement piece or enabled to be engaged only with the engagement piece. This invention is characterized in that the packaged item is inserted from a released edge of the film onto the holding region, the film is engaged with the engagement piece to bend the bent piece, the film is tensioned to cause the packaged item to be pushed against the holding region and held there.
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