| 摘要 |
The method involves producing holes in a film or foil (2) by a needle-like tool (16) while crimping the edges of the resultant holes in the film or foil with clamping elements preferably a lower tool (6) and a tool guide plate (9). The film or foil is guided and clamped between two clamping elements. An independent claim is included for the device for perforation of films or foils. |
