CUTTING LINE FORMING EDGE AND CUTTING LINE

摘要

PROBLEM TO BE SOLVED: To provide a cutting line forming edge for forming a straight cutting line of depth within a range of thickness of a laminated film on the laminated film. SOLUTION: This cutting line forming edge is an edge for forming the straight cutting line of depth within the range of thickness of laminated film on the laminated film. The shape of the edge is an isosceles triangular pyramid having an isosceles triangle as a base. An angle between a ridgeline extending from an apex of the isosceles triangle of the base and the base is 20 to 40 degrees, and an angle striding across the ridgeline is 100 to 140 degrees. This cutting line forming edge is installed to put the apex of the isosceles triangle of the base in rear side of a traveling direction of the laminated film.