| 摘要 |
A bag closing machine has a pair of endless belts mounted in a housing and having adjacent runs extending along a passage in the housing. The belts are driven to cause bags to be conveyed successively between the runs along the passage. A heating station adjacent the passage is operable to heat sealing areas of the bags to activate heat sealable material in a bag closing manner. The heating station has at least one pair of nozzles, one nozzle of each pair being on one side of the passage and the other nozzle of each pair being on the opposite side of the passage, the nozzles being directed towards the sealing area of a bag passing the heating station. Hot air is supplied to the nozzles to cause hot air to be emitted from the nozzles and impinge on the sealing area of a bag to activate the heat sealable material in a bag closing manner. When no bag is passing the heating station, hot air from the nozzles is removed to a location remote from the drive belts. The belts and associated parts may be mounted in respective separable portions of the machine to facilitate maintenance. |
