| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for joining films which can bore sprocket holes surely and accurately when the end parts to be joined of the films are joined to each other by an adhesive tape and improve the boring life. SOLUTION: In the blade tip part of a punch member for boring, the rectangular tip part is formed in a shape having tip parts toward four corners cut in a V-shape in the direction crossing at right angles to each other, the punch members of a pair are contacted/arranged with/in both end parts in the width direction of a punch holder member manufactured to have a prescribed width, spacer members having a prescribed thickness of a pair are contacted/arranged with/on the outside of the punch members, adhesive tape cutting blade members are contacted/arranged on the outside of the spacer members, and the punch members, the spacer members, and the adhesive tape cutting blade members are bonded/fixed integrally and freely attachably/detachably to both end parts in the width direction of the punch holder member by bonding members. |
