PLASTIC SHEET HAVING FOLDABLE RULED LINE AND RULED LINE BLADE FOR PLASTIC SHEET

摘要

PROBLEM TO BE SOLVED: To provide a plastic sheet having a foldable ruled line, which can substantially simultaneously satisfy requirements for folding properties and folding strength of a plastic sheet and to provide a ruled line blade for the plastic sheet.

SOLUTION: In the foldable ruled line 2 annexed to a plastic sheet 1 in its folding part, a plurality of shallow groove parts 3 are provided over the whole length of a bottom face part 2b of the foldable ruled line 2 and are arranged in a substantially rope pattern while inclining at a predetermined angle in the direction g of the provision of the ruled line. In the ruled line blade 6 for the plastic sheet for providing the foldable ruled line 2, a plurality of blade parts 7 in a concave form are provided over the whole length of a top face part 6b of the ruled line blade 6 and are arranged in a substantially rope pattern while inclining at a predetermined angle in the direction g of the provision of the ruled line.

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