| 摘要 |
<p>The device (1) has a cutting edge (3) and a stationary blade (5). The stationary blade has pattern which cooperates with the cutting edge along a line of action so that a film (2) in the areas of contact with the cutting edge and the stationary blade is perforated. An interlocking is provided to run vertical to direction of conveyance (2a) of the film. A mechanical, pneumatic or hydraulic suspension is provided for an elastic bearing of the stationary blade. An independent claim is included for method for perforating sheets.</p> |
