| 摘要 |
PROBLEM TO BE SOLVED: To prevent occurrence of a sharp part at a corner of a cut corner. SOLUTION: A cutter for a bag making machine comprises a bar-like member 12 provided at a position between a slit cutter 10 and cutting blades 5, 6 on a feeding route of a plastic film 1 to laterally enlarge the film 1 after slitting the film 1 to form a gap at its longitudinal slit part for feeding a product size + margin set by synchronized first feeding roll 3 and second feeding roll 4, one set of first cutters 5 provided between the roll 3 and the roll 4, one set of second cutters 6 provided forward of the roll 4 so that the first and second cutters 5 and 6 are movably provided to enable setting of an interval of the cutters 5 and 6 to a set product size. |
