| 摘要 |
In bag-making apparatus, superposed plastics film layers of a travelling web are welded transversely along a processing path by pairs of welding jaws carried by chains to form bags which are severed from the web. At the end of or beyond the processing path, holding bars carried by the chains or by further chains parallel thereto engage the bags upstream of the weld seams and transfer them to take-off devices for stacking purposes. |
