| 摘要 |
PROBLEM TO BE SOLVED: To enable a once closed lid to be opened and unpacked simply and positively, and close the lid again by sheathing the division part of pair sets of cutting lines being at both sides of an opening flap part, and not sheathing the division part of other pair sets of cutting lines being at both sides of a finger hole flap. SOLUTION: Adhesive application AD is effected by inward folding short lid panels 22, 24 being opposed to each other at the opening part, and opposed long lid panels 21, 23 are folded thereon. Then, each contact part of the lid panels 21, 23 is sheathed by an adhesive tape TP having a width sufficient to cover an open flap part OF. At this time, the adhesive tape is put to cover pair sets of cutting lines spaced with a distance (d') at both sides of the opening flap part OF; however, not to cover pair sets of cutting lines spaced with a distance (d) near both ends of a finger flap part FF. Consequently, a finger is put into the center of the cutting lines 50 of the lid panel 23 to fold down the finger flap FF, thus opening the opening flap OF.
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