| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which a sheet cannot be folded excellently when the sheet is scored and folded from multiple directions.SOLUTION: A first scoring unit 4 includes: a first convex 40 disposed on a side of one surface S1 of a sheet; and a first concave 41 disposed on a side of the other surface S2 of the sheet. Making the first convex 40 and the first concave 41 approach each other forms a first fold where one surface S1 of the sheet is recessed and the other surface S2 of the sheet protrudes. A second scoring unit 5 includes: a second concave 51 disposed on the side of one surface S1 of the sheet; and a second convex 50 disposed on the side of the other surface S2 of the sheet. Making the second concave 51 and the second convex 50 approach each other forms a second fold where one surface S1 of the sheet protrudes and the other surface S2 of the sheet is recessed. Folds in different directions can be formed, thus enabling the folding in the same direction as the fold and the folding in a direction opposite to the fold, and allowing cardboard and thin paper to be folded excellently.SELECTED DRAWING: Figure 1 |
