The packaging machinery and the manner which produce the sealing package of the flow food product

摘要

There is described a packaging machine (1) for producing sealed aseptic packages (2) of a pourable food product from a tube (3) of packaging material fed along a vertical path (A) and filled continuously with the food product. The machine (1) has gripping means (13 and 14) for gripping the tube (3) at equally spaced cross sections (15); and sealing means (23 and 24; 34 and 35) for sealing the packaging material of the tube (3) along the cross sections (15), and in turn having a first and a second sealing device (23 and 24; 34 and 35) forming part of respective distinct and successive units (10 and 20) of the machine (1). The first sealing device (23 and 24) interacts with the cross sections (15) of the tube (3) for a time (T1) shorter than the time (T) required to achieve complete sealing of the cross sections (15), but sufficient to form respective temporary aseptic transverse sealing bands (25); and the second sealing device (34 and 35) interacts with said temporary sealing bands (25) to seal them completely. IMAGE IMAGE