| 摘要 |
<p>A heat-shrinking film packaging machine is provided with a system for the supply and discharge of hot air in which a packaging chamber 11 is sealed at the top by a bell which comprises a moving half-shell 13 and a fixed half- shell 17. Heating means 9 mounted within an open intermediate layer 8 between a rear wall 7 of chamber 11 and an opposing panel 6 are provided in chamber 11. An extraction system for either hot air originating from said packaging chamber 11 or cold external air is also provided in fixed half-shell 17. <IMAGE></p> |
