| 摘要 |
PROBLEM TO BE SOLVED: To provide a notch forming cutter (or notch forming cutter set) that can form a notch to be formed at a marginal part of a packaging bag into a shape excellent in such a function as easy detectability or catch prevention performance.SOLUTION: A notch forming cutter to form a notch N for tear starting in a marginal part Ba of a packaging bag B has a plurality of sewing machine blades 11 the whole of which is made of a sheet of lamella with a plurality of blade parts 13 formed with right and left gaps integrated in a state of being overlapped via spacers 16 of predetermined thickness. As a result, a plurality of perforation-like notch mark lines are formed as the notch N, notches are formed into a shape excellent in such a function as easy detectability or catch prevention performance, and a notch forming cutter 1 can be manufactured inexpensively and easily. |
