| 摘要 |
PROBLEM TO BE SOLVED: To provide a roll storage carton wherein cutting of a film (sheet) can be lightly started and the carton includes a cutter blade which can continue to cut smoothly to the end. SOLUTION: A virtual line 10 connecting edge tips of the cutter blade 2 is linear at the center 11 and exhibits a swelling arcuate form at both side ends 12. In addition, the linear line and the arcs are smoothly continuous.
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