Packaging system comprising a supporting and containing structure adapted to contain therein and to support: - a film bending assembly comprising a bending area in which a product to be packaged is inserted in a plastic film and advanced through first transporting means to arrive in a following welding bars assembly; - the welding bars assembly comprising bars for welding and cutting the films adapted to perform the welding and cutting of the plastic film to make a case around the product to be packaged; - a shrinkage assembly in which heat-shrinkage and sealing of the case around the product are performed, ending the packaging of the product, said shrinkage assembly being supplied directly by the first transporting means at the end of the welding and cutting operation performed in the welding bars assembly; characterised in that it further comprises second transporting means transverse to the advancement direction of the product in the system and adapted to receive the packaged parcel exiting from the shrinkage assembly and from said supporting and containing structure and to advance it towards third transporting means transverse to the advancement direction of the product in the second transporting means, said third transporting means being adapted to receive the packaged parcel exiting from the second transporting means and to take it adjacent to an inlet area of the product to be packaged in the film bending assembly, wherein the supporting and containing structure comprises a fairing comprising side walls and entry or exit walls in which inlet openings and outlet openings are obtained for the product in/from the packaging system, inside the fairing the following being contained: the film bending assembly, the welding bars assembly, the shrinkage assembly and the first transporting means adapted to advance the product from the inlet opening, through which the product to be packaged is inserted in the packaging system, to the outlet opening of the packaged product, through the film bending assembly, the welding bars assembly and the shrinkage assembly; wherein the second transporting means are parallel to the entry or exit walls of the fairing and are adapted to receive the packaged parcel exiting from the outlet opening of the product from the packaging system, and the third transporting means are parallel to the side walls of the fairing and are adapted to receive the packaged parcel exiting from the second transporting means and to take it adjacent to the inlet opening of the product in the packaging system; and whereby, during an exit movement of the packaged product from the packaging system, another product to be packaged is able to be inserted in the packaging system and advanced therein by means of the first transporting means, making the system continuously operating. - a film bending assembly comprising a bending area in which a product to be packaged is inserted in a plastic film and advanced through first transporting means to arrive in a following welding bars assembly; - the welding bars assembly comprising bars for welding and cutting the films adapted to perform the welding and cutting of the plastic film to make a case around the product to be packaged; - a shrinkage assembly in which heat-shrinkage and sealing of the case around the product are performed, ending the packaging of the product, said shrinkage assembly being supplied directly by the first transporting means at the end of the welding and cutting operation performed in the welding bars assembly; characterised in that it further comprises second transporting means transverse to the advancement direction of the product in the system and adapted to receive the packaged parcel exiting from the shrinkage assembly and from said supporting and containing structure and to advance it towards third transporting means transverse to the advancement direction of the product in the second transporting means, said third transporting means being adapted to receive the packaged parcel exiting from the second transporting means and to take it adjacent to an inlet area of the product to be packaged in the film bending assembly, wherein the supporting and containing structure comprises a fairing comprising side walls and entry or exit walls in which inlet openings and outlet openings are obtained for the product in/from the packaging system, inside the fairing the following being contained: the film bending assembly, the welding bars assembly, the shrinkage assembly and the first transporting means adapted to advance the product from the inlet opening, through which the product to be packaged is inserted in the packaging system, to the outlet opening of the packaged product, through the film bending assembly, the welding bars assembly and the shrinkage assembly; wherein the second transporting means are parallel to the entry or exit walls of the fairing and are adapted to receive the packaged parcel exiting from the outlet opening of the product from the packaging system, and the third transporting means are parallel to the side walls of the fairing and are adapted to receive the packaged parcel exiting from the second transporting means and to take it adjacent to the inlet opening of the product in the packaging system; and whereby, during an exit movement of the packaged product from the packaging system, another product to be packaged is able to be inserted in the packaging system and advanced therein by means of the first transporting means, making the system continuously operating.