Wanted: Info about Inline Perforating

Progression metal stamping dies have been around for a long time and would do the job. Now there are dies that operate with electric solenoids that operate at very high speeds. I know an individual that invented ones used in electric connector forming and they can run at speeds of greater than 1200 strokes per minute. You can run multiple strands through them if you design them for it. The size of the springs and solenoids are determined by the force needed. The electrical controls to operate the solenoids are not that complicated.

Thanks Mrgreentoo, it sounds interesting but my only concern is that a stamping die may cause problems because the web never stops moving to allow the die to stamp. The web is moving at speeds of 200 to 400 feet per minute and these perforations need to happen during the continuous operation.

I'm not ruling it out and wouldn't mind researching the high speed electric solenoid system that you mentioned. Would you mind sending me some contact info or website to look into this?

It sounds as though an air eject or vacuum rotary die would work for you. Usually the holes are larger, about .125" or so, because they are used for pinfeed applications. Rotometrics, Wilson Machine or Lederle Machine all can make air eject dies. Rotometrics makes the vacuum dies.

Are you still looking for a rotary perforator?