| 摘要 |
A film-packaging apparatus and method for obtaining a rectilinear trajectory of at least one thermowelding member (68), operating on a product flow, movable with a substantially constant speed along a feeding direction, and apt to package each product (1) in a respective casing (8) of thermosensitive film (27), comprising a winding station, wherein said film (27) is positioned with respect to the flow, a longitudinal welding station, to weld the film (27) parallely to the feeding direction, and a cross welding station (9), to weld the film (27) transversely to the feeding direction, having the above thermowelding member (68) comprising: first operating means (66), to move the thermowelding member (68) according to the feeding direction, comprising a first stator (66a), fixed with respect to the packaging apparatus, and a first support member (14), movable according to the feeding direction with respect to said first stator (66a); second operating means (61), distinct from the first operating means (66) and comprising a second stator, connected to the first support member (14), and a second support member (62), associated to the second stator, whereto the thermowelding member (68) is connected and that is movable orthogonally to said product flow; and a control unit (40), to control the first (66) and second (61) operating means independently the ones from the others (Fig. 4). <IMAGE> |
