SHEET AND BLADE FOR SHAPING SHEET BENT PORTION

摘要

The present invention provides a sheet with a folding portion that has a sheet body such as a plastic sheet, on which a folding portion (12) is formed perpendicular with respect to the folding direction (X). The folding portion (12) of the sheet includes a large number of recesses (14) and remnants (16) defined between the recesses (14) formed on the sheet body (10). Boundary lines (18) between the recesses (14) and the remnants (16) each are tilted at acute angle with respect to the folding portion-forming direction (Y) and towards the same side as that of an opposite one of the boundary lines (18) with a corresponding remnant (16) therebetween. The present invention also provides a shaping blade for shaping the folding portion on the sheet.