| 摘要 |
Apparatus for forming transverse seam welds or separated seam welds in plastic film webs, preferably for making bags, with a transverse welding device having jaws cyclically opened and closed and between which the film web is intermittently advanced when the jaws are open and is held in position during the welding times, and a rocker lever, which by a cam slot and a slide block imparts to the transverse welding device or to the film web a movement in the same or opposite direction to each other, which movement is derived from a rotating eccentric cam wheel. |
