| 摘要 |
<p>A packaging machine has a former (10) with a guiding member and a tube for forming an elongated bag-making material (F) into a tubular form, a longitudinal sealer (20) disposed on the front side of the tube for sealing mutually overlapping side edge portions of the tubularly formed bag-making material in a longitudinal direction and a transverse sealer (40) for sealing the longitudinally sealed bag-making material in a transverse direction transverse to the longitudinal direction to thereby package articles dropped down. The tube (12) has a conical portion (60) at the top and a cylindrical portion (61) extending downward from the conical portion. The cylindrical portion (61) has an opening (70a) on the back side such that articles dropped through the interior of the tube can directly contact the bag-making material and will be prevented from becoming clogged. An unopened portion (72) may be provided to the cylindrical portion (61) of the tube below the opening (70a) in order to maintain a circular cross-sectional shape of the bag-making material.</p> |
