ROTARY BORING DEVICE FOR BORING HOLE IN CONTINUOUS STRIP FED CONTINUOUSLY, METHOD FOR USING THE SAME, AND ROTARY BAG FORMING DEVICE PROVIDED THEREWITH

摘要

PROBLEM TO BE SOLVED: To provide a device for continuously conveying a continuous strip such as a bag material strip of synthetic resin film in one direction and for boring circular holes at certain preset intervals in the continuous strip being conveyed on a path of travel; a boring method using the device; and a bag forming device having the device on a portion thereof. ;SOLUTION: A transfer roller for continuously conveying a continuous strip W in one direction is provided. A cutter drum 21 and a receiving drum 41 which sandwich the continuous strip W are provided on a path of travel for the continuous strip W. A pair of cylindrical cutters 26 project radially from the cutter drum 21 in such a manner as to be 180 degrees out of phase with respect to each other. The cutters 26 are connected to a drive source so as to rotate about their respective axes. The other receiving drum 41 is provided with a cutter receiver 42 in a position where it abuts a cutter edge 28. The cutter drum 21 and the receiving drum 41 are rotated to bore holes at predetermined intervals in the continuous strip W being conveyed.;COPYRIGHT: (C)2000,JPO