| 摘要 |
PROBLEM TO BE SOLVED: To provide a folding sheet, which can be easily unfolded from a folded state.SOLUTION: The folding sheet is formed by folding a sheet member 10. The sheet member 10 includes a first fold line 1, a second fold line 2 and a fourth fold line 4 which are formed along the length direction; a third fold line 3 formed along the width direction; and a slit 5 provided on the third fold line 3 with a length shorter than the lateral length of the sheet member 10. The first fold line 1, second fold line 2 and fourth fold line 4 are disposed in this order in the width direction from one end of the sheet member 10, and the third fold line 3 is disposed so as to divide the sheet member 10 into two in the length direction. The sheet member 10 is folded, in one surface (surface A), by mountain fold along the first fold line 1, valley fold along the second fold line 2, valley fold along the third fold line 3, and mountain fold or valley fold along the fourth line 4, in this order. |
