process for ausstanzen and will not rectangular form of stickers

摘要

A strip of tape is cut into precise lengths of cut tape. The cut lengths of tape are transferred by a drum to a pair of drums rotating side by side. One of the rotating drums carries a die and the other a punch movable into and out of the die. The cut lengths of tape are held on the periphery of the die drum with two groups of vacuum pressure holes respectively provided inside and outside the perimeter of the die for selective release of a punched label and surrounding waste material.