| 摘要 |
The invention relates to a packaging machine capable of packaging, in a film 8 delivered continuously on a conveyor 5, products 7 which have dimensions which may vary from one product to the next product, particularly in the longitudinal direction. …<??>The machine includes an assembly 20 for guiding and longitudinal welding of the edges of the film, in order to form a casing (tube) 8' containing the products. The edges of the film are cut and removed by a suction member 59. The casing (tube) and the products then pass into an assembly 21 for transverse welding equipped with optical detectors 115, 116 indicating the position and the length of each gap between the products 7. A cam mechanism 84 actuates both welding jaws 67, 73 and the to-and-fro movement of a carriage 64 carrying these jaws. Transverse welding is preferably performed at a location which has a predefined relative position with respect to the length of the gap. …<??>This machine can be used for individually packaging food products or other products, in shrinkable or non-shrinkable films. …<IMAGE>… |
