FIELD: machine building.
SUBSTANCE: device for plastic film perforation prevents wastes 15 catching by a cylindrical punch pin 2. The device contains the punch pin 2 with the saw-like blade comprising located alternatively shoulders and depressions. Inside the punch pin a projecting part 5 is located, it is locked in it and projects through vertical beyond the level H1 of the bottom parts 7 of depressions in the direction of the level H2 of the tips 6 of the shoulders. Between the punch pin 2 and the projecting part 5 a ring gap 8 is made. Wherein the drive is made with the possibility of pushing in the plastic film of the projecting part 5 for its insertion in the ring gap 8, and breaks it at the bottom parts of the depressions of the punch pin 2.
EFFECT: prevention of wastes catching by the punch pin.
6 cl, 12 dwg
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