PACKING UNIT FOR CONTINUOUSLY PRODUCING WELDING SEALED PACKAGES, CONTAINING POURABLE FOOD PRODUCTS, FROM A TUBE OF PACKING MATERIAL

摘要

A packaging unit (1) for continuously producing aseptic sealed packages (2), containing a pourable food product, from a tube (14) of packaging material filled with the food product; the unit (1) has a first and second chain conveyor (10, 11) respectively having a number of jaws (12) and a number of counter-jaws (13), which interact with and grip the tube (14) to heat-seal the tube at successive cross sections by means of induction heating elements (29) on the jaws (12); and the jaws (12) and counter-jaws (13) are guided along respective work paths by pairs of cams (50, 51) having different profiles for controlling interaction of the jaws (12) and counter-jaws (13) with the tube (14) of packaging material.