| 摘要 |
<p>Packing method and packing machine (18) for producing a sealed package (3); is envisaged to: wrap a sheet (7) of packing material longitudinally into a tube shape about a product to form a tubular package; heat seal the tubular package longitudinally, by means of a longitudinal heat seal device (48), to stabilize the shape of the tubular package; heat seal the tubular package transversely, by means of a transverse heat-seal device (49), to form two transverse heat seals (10) closing opposite ends of the tubular package at lateral walls of the product; interrupt the formation of at least one transverse heat seal (10), the transverse heat seal (10) itself over a limited portion of the tubular package, to leave a vent channel (67) extending astride the transverse heat seal (10) that connects the inside of the sealed package (3) to the outside; and close the vent channel (67) after the transverse heat seals (10) are formed.</p> |
