A method of treating cuboidal packs having an outer wrapper made of sealable shrink-wrapping film, whose folding flaps (18, 19) are connected to one another by thermal sealing and whose walls are subjected to the action of in particular surface-area heat-discharging mechanisms for shrink-wrapping treatment, wherein the packs are transported individually, one after the other in a row and at a distance apart from one another, characterized by the following features: a) during a first phase of transportation, the packs are transported in cyclic fashion, with the distance between the packs being maintained in the process, b) in an assembly station, a plurality of successive packs are combined to form a unit, wherein all packs of a unit are arranged in the same horizontal plane, wherein successive units are arranged in successive horizontal planes, and wherein the distances between the packs of a single unit and the distances between successive units are maintained in respect of transportation and treatment, c) in the assembly station, the units made up of a plurality of packs are transported further transversely to the supply direction in a joint conveying cycle in each case, that is to say in the vertical direction and at a distance apart from one another, d) during the upwardly directed, cyclic transportation of the units, when the packs of a single unit are at a standstill, a plurality of processing stations (46, 49, 51) arranged one above the other provide for processing operations to be carried out on respectively all the packs of a single unit, that is to say sealing with the application of heat and pressure, and/or shrink-wrapping treatment with the application of heat in the region of transversely directed side walls (14, 15) of the packs, e) once the processing operations have been carried out in the region of the assembly station, the packs are transported away, and fed to further processing stations, with the unit being maintained in the process. a) during a first phase of transportation, the packs are transported in cyclic fashion, with the distance between the packs being maintained in the process, b) in an assembly station, a plurality of successive packs are combined to form a unit, wherein all packs of a unit are arranged in the same horizontal plane, wherein successive units are arranged in successive horizontal planes, and wherein the distances between the packs of a single unit and the distances between successive units are maintained in respect of transportation and treatment, c) in the assembly station, the units made up of a plurality of packs are transported further transversely to the supply direction in a joint conveying cycle in each case, that is to say in the vertical direction and at a distance apart from one another, d) during the upwardly directed, cyclic transportation of the units, when the packs of a single unit are at a standstill, a plurality of processing stations (46, 49, 51) arranged one above the other provide for processing operations to be carried out on respectively all the packs of a single unit, that is to say sealing with the application of heat and pressure, and/or shrink-wrapping treatment with the application of heat in the region of transversely directed side walls (14, 15) of the packs, e) once the processing operations have been carried out in the region of the assembly station, the packs are transported away, and fed to further processing stations, with the unit being maintained in the process.