A bag-making machine including a longitudinally slotted roller and feed means for feeding plastic film onto the roller. A synchronised cutter sealing member is displaceable cyclically to cause it to enter a slot of the roller to cut and seal the film. Mating formations on the cutter sealing member and...http://www.google.es/patents/US3947198?utm_source=gb-gplus-sharePatente US3947198 - Apparatus for making bags from synthetic plastic film
Apparatus for making bags from synthetic plastic film
